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2012年第43卷增刊共收錄72篇
1. Accession number:20124915763415
  Title:Simulation on corn plants in harvesting process based on ADAMS
  Authors:Du, Yuefeng1 ; Mao, Enrong1 ; Song, Zhenghe1 ; Zhu, Zhongxiang1 ; Gao, Jianmin1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Mao, E. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:106-111
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The models of stripper rollers of a certain type of corn harvester and corn plants were established in Pro/E. And then, these models were led to the ADAMS environment with the interface of MECHANISM/Pro to create the virtual prototyping models including constrains and motions. The harvesting process was simulated based on the ADAMS techniques of sensor and manuscript control. The simulation data analysis was mainly focused on the case that the corn plants at the angle of 79°. Finally, the best inclination angle of plant, 89°, was derived based on the analysis of harvest time and grain hurt rate.
  Number of references:8
  Main heading:Harvesting
  Controlled terms:Plants (botany)
  Uncontrolled terms:ADAMS  -  Corn harvesters  -  Corn plant  -  Harvest time  -  Inclination angles  -  Simulation data  -  Vertical roller  -  Virtual prototyping
  Classification code:461.9 Biology  -  821.3 Agricultural Methods
  DOI:10.6041/j.issn.1000-1298.2012.S0.021
  Database:Compendex

4. Accession number:20124915763412
  Title:Modal analysis of header for type 4LZ-2.0 combine harvester
  Authors:Chen, Shuren1 ; Han, Hongyang1 ; Lu, Qiang1 
  Author affiliation:1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Chen, S. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:90-94
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to establish an accurate finite element model of header and get complete structural dynamic characteristics for combine harvester, the experimental modal analysis of type 4LZ-2.0 header was carried out. The modal parameters in each order were recognized by using ModalVIEW. Finite element model was analyzed by using UG software, and MAC value of experimental mode was calculated. The finite element model of header was validated.
  Number of references:10
  Main heading:Harvesters
  Controlled terms:Finite element method  -  Modal analysis  -  Soil structure interactions  -  Structural dynamics
  Uncontrolled terms:Combine harvesters  -  Dynamic characteristics  -  Experimental modal analysis  -  Experimental modes  -  Finite element models  -  Header  -  Modal parameters  -  Model validation
  Classification code:408 Structural Design  -  483.2 Foundations  -  821.1 Agricultural Machinery and Equipment  -  921 Mathematics  -  921.6 Numerical Methods
  DOI:10.6041/j.issn.1000-1298.2012.S0.018
  Database:Compendex

5. Accession number:20124915763466
  Title:Simulation algorithm of lunar rover based on Vortex
  Authors:Jiang, Lei1 ; Guo, Jianjuan1 
  Author affiliation:1  China North Vehicle Research Institute, Beijing 100072, China
  Corresponding author:Jiang, L. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:352-356
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to achieve the performance of lunar rover simulation assessment in a variety of state of motion, based on programming in the Pro/E modeling environment, 3-D terrain profile and vehicle models were changed to SQlite database directly. Lunar rover dynamic model was set up with Vortex's API functions. And then, visualized objects can be rendered by using OSG graphic engine. The typical terrain mechanical models in Vortex were evaluated and fixed based on wheel soil bench tests. Finally, 3-D visualized software was developed with Microsoft MFC framework, which had function of interrupt, call-back and simulation's datum recurring.
  Number of references:6
  Main heading:Computer simulation
  Controlled terms:Application programming interfaces (API)  -  Computer software  -  Geologic models  -  Three dimensional computer graphics  -  Vortex flow
  Uncontrolled terms:Lunar rovers  -  Mechanical model  -  Physics engine  -  Simulation  -  Virtual realized
  Classification code:481.1 Geology  -  631.1 Fluid Flow, General  -  723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications
  DOI:10.6041/j.issn.1000-1298.2012.S0.072
  Database:Compendex

7. Accession number:20124915763409
  Title:Design and experiment of combine harvester with function of stalk-discharging to ditch
  Authors:Chen, Yulun1 ; Ding, Weimin1 ; Yang, Hongtu1 ; Ding, Qishuo1 ; Wang, Xiaochan1 
  Author affiliation:1  Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Ding, W. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:73-78
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A multifunctional machine with functions of ditching and stalk-disposing while harvesting was developed. Field tests results showed that the mean working velocity and efficiency of the machine were about 0.8 m/s and 0.27 hm2/h. The ratio of stalk discharged to ditch was up to 95%. The field operation of harvesting, ditching and stalk-disposing was complete in one time.
  Number of references:18
  Main heading:Harvesters
  Controlled terms:Agricultural engineering  -  Mechanical engineering
  Uncontrolled terms:Combine harvesters  -  Ditch  -  Field operation  -  Field test  -  Multifunctional machines  -  Stalk-discharging to ditch
  Classification code:608 Mechanical Engineering, General  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.1 Agricultural Machinery and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.S0.015
  Database:Compendex

8. Accession number:20124915763441
  Title:Optimization on harvesting technology and drying experiment of alfalfa
  Authors:Qian, Wang1 ; Yang, Shikun1 ; Liu, Guilin1 ; Wang, Quanxi1 ; Wu, Yamei1 
  Author affiliation:1  Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
  Corresponding author:Qian, W. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:231-234 288
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The dry and wet harvesting technology of the hay and green grass was analyzed though experiments. Alfalfa drying rate of air drying was analyzed. Law of nutrition variation and dry matter loss was studied. The out-of-sync problem was resolved and nutrition retention rate was improved. The nutrition was up to 90% and dry matter loss was below 2%.
  Number of references:9
  Main heading:Experiments
  Controlled terms:Harvesting  -  Nutrition  -  Optimization
  Uncontrolled terms:Air drying  -  Alfalfa  -  Dry  -  Dry and wet  -  Dry matter loss  -  Drying rates  -  Retention rate
  Classification code:461.7 Health Care  -  821.3 Agricultural Methods  -  901.3 Engineering Research  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.S0.047
  Database:Compendex

9. Accession number:20124915763458
  Title:Dynamic estimation measurement error of mass flow rate
  Authors:Ding, Yongqian1 ; Ding, Weimin1  
  Author affiliation:1  Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Ding, W. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:314-317
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A impact-based method, which can be used to measure the real-time velocity and the mass flow rate of the granules flow, was presented. And a way to dynamically estimate the measurement error of the velocity and mass flow rate was also provided. Using the self-designed experimental equipment, experiments with the soy bean as the experimental object to estimate the measurement error had been done. It was shown during the experiments that the maximal estimated error of the mass flow rate was 4.00% and the average value was 1.44%, the maximal estimated error of the velocity was 9.69% and had an average value of 5.03%. A positive correlation between the dynamic measurement accuracy and the measurement accuracy of gross mass was also found.
  Number of references:9
  Main heading:Pipe flow
  Controlled terms:Experiments  -  Granulation
  Uncontrolled terms:Average values  -  Dynamic estimation  -  Dynamic measurement  -  Dynamic measurement accuracy  -  Estimated error  -  Experimental equipments  -  Impact-based method  -  Mass flow rate  -  Measurement accuracy  -  Positive correlations
  Classification code:619.1 Pipe, Piping and Pipelines  -  802.3 Chemical Operations  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.S0.064
  Database:Compendex

11.Accession number:20124915763449
  Title:Walking goal line detection for grain combine harvester based on machine vision
  Authors:Wu, Gang1 ; Tan, Yu1 ; Zheng, Yongjun1 ; Wang, Shumao1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Tan, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:266-270
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Aimed at visual navigation of grain combine harvester, an algorithm was proposed for walking goal line detection on improved Hough transform (HT) on grain combine harvester. Through the improvement for image threshold segmentation of the 1-D maximum entropy, the computing speed was increased. After scanning the rows and columns of binary images, the end position of the walk goal line and the candidate points on the direction of the walk goal line were determined. Then the candidate points were used as points set, least squares methods and the end position of the goal line were combined to determine the point from the test line. The improved HT has finished the test line detection. Compared with the traditional HT, the improved HT transfers binary mapping into 1-D mapping, the computing speed was accelerated, and the space occupied was reduced. Meanwhile, the anti-interference ability was improved effectively. After testing thousands of pictures, the algorithm was well proved with effectively detecting the linear parameters, and the processing time was about 100 ms.
  Number of references:9
  Main heading:Computer vision
  Controlled terms:Algorithms  -  Harvesters  -  Hough transforms  -  Image segmentation
  Uncontrolled terms:Anti-interference  -  Binary mapping  -  Combine harvesters  -  Computing speed  -  Image threshold  -  Least squares methods  -  Line detection  -  Linear parameters  -  Maximum entropy  -  Processing time   -  Test-lines  -  Visual Navigation
  Classification code:723 Computer Software, Data Handling and Applications  -  821.1 Agricultural Machinery and Equipment  -  921 Mathematics  -  921.3 Mathematical Transformations
  DOI:10.6041/j.issn.1000-1298.2012.S0.055
  Database:Compendex

14. Accession number:20124915763429
  Title:Process optimization of anaerobic fermentation with mixed material of food garbage and cow dung
  Authors:Li, Yi1 ; Li, Lei2 ; Zhang, Dalei3 ; Gu, Shiyan1 ; Kou, Wei3 ; Yi, Weiming4  
  Author affiliation:1  College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
                 2  Shijiazhuang Hongyi Energy Saving and Environmental Protection Technology Co. Ltd., Shijiazhuang 050081, China
                 3  Liaoning Institute of Energy Resource, Yingkou 115003, China
                 4  School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
  Corresponding author:Yi, W. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:180-185
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Based on the early single factor test, quadratic regression orthogonal rotating combination design was applied. The whole gas production was taken as response value. Effects of four factors on anaerobic fermentation were studied. These four factors are the ratio of food garbage and cow dung, temperature, pH value and the ratio of inoculum and quality of fermentation. The mathematical mode about mixed fermentation of food garbage and cow dung was established, regression equation was optimized and analyzed, in addition, the optimal condition and interactive effects were exposed. The optimum technological conditions for the mixed-fermentation was as the followings: the ratio of food garbage and cow dung was 2.5, temperature was 37.5°C, the pH value was 7.0 and the ratio of inoculum volume and quality of fermentation was 4.The order of the influence of four factors on mixed-fermentation of food garbage and cow dung was as follows: the ratio of inoculum and quality of fermentation, temperature, the ratio of food garbage and cow dung, and pH value. The gas production of the optimum technological condition and the random experiment also showed no significant difference with the predictive value. The model fitted well.
  Number of references:15
  Main heading:Fermentation
  Controlled terms:Optimization  -  pH  -  Process control
  Uncontrolled terms:Anaerobic fermentation  -  Combination design  -  Cow dung  -  Gas productions  -  Interactive effect  -  Mixed materials  -  Optimal conditions  -  Optimum technological conditions  -  pH value  -  Predictive values   -  Quadratic regression  -  Regression equation
  Classification code:731 Automatic Control Principles and Applications  -  801.1 Chemistry, General  -  801.2 Biochemistry  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.S0.035
  Database:Compendex

15. Accession number:20124915763398
  Title:Design and simulation of side rollover resistant capability of tracked vehicle for mountain orchard
  Authors:Zhu, Yuqing1 ; Hong, Tiansheng1 ; Wu, Weibin1 ; Song, Shuran1 ; Li, Zhen1 ; Mo, Weibiao1 
  Author affiliation:1  Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
  Corresponding author:Hong, T. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:19-23
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:To adapt to the environment of mountain orchard road transport characteristics, according to the tracked vehicle running characteristics, its general layout requirements were put forward based on the improvement of side rollover resistant capability of the tracked vehicle for mountain orchard. After the completion of all assembly designs, in order to improve side rollover resistant capability of the tracked vehicle for mountain orchards, the general layout of the system design was completed. The vehicle's 3-D model was established and carried on the simulation. The simulation results showed that the design met the design requirements, and shortened the period of design.
  Number of references:17
  Main heading:Tracked vehicles
  Controlled terms:Computer simulation  -  Design  -  Landforms  -  Orchards  -  Three dimensional computer graphics
  Uncontrolled terms:3D models  -  Assembly designs  -  Design and simulation  -  Design requirements  -  Layout designs  -  Road transports  -  Running characteristic  -  Side rollover resistant  -  Simulation
  Classification code:408 Structural Design  -  481.1 Geology  -  663 Buses, Tractors and Trucks  -  723.5 Computer Applications  -  821.3 Agricultural Methods
  DOI:10.6041/j.issn.1000-1298.2012.S0.004
  Database:Compendex

17. Accession number:20124915763430
  Title:Design and experiment of dry anaerobic digestion pilot plant for biogas producing
  Authors:Jing, Quanrong1 ; Huang, Xiguo1 ; Wu, Lili1 ; Liu, Tianshu1 ; Yan, Xiaohui1 ; Li, Daoyi1 
  Author affiliation:1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Huang, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:186-189
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A pilot plant of dry anaerobic digestion was constructed in the dairy farm of Chinese Academy of Agricultural Mechanization Sciences. The plant included pretreatment system, solid feed-in system, horizontal anaerobic reactor, biogas storage and purification system, insulation warming system, and digestate discharging system. Specially designed low-speed horizontal rod-gear agitators used in the horizontal anaerobic reactor enhanced mass and heat transfer efficiency and overcame high solid feedstock feeding and discharging difficulties. Pilot-scale experiment of continuous dry thermophilic anaerobic digestion of dairy manure was conducted in the pilot plan. The experiment results showed that the pilot plant could efficiently dispose high solid dairy manure, and average volume biogas production was 3.0 m3/(m3·d).
  Number of references:7
  Main heading:Experiments
  Controlled terms:Anaerobic digestion  -  Biogas  -  Machinery  -  Manures  -  Pilot plants  -  Process design
  Uncontrolled terms:Agricultural mechanization  -  Anaerobic reactor  -  Average volume  -  Biogas production  -  Dairy farms  -  Dairy manures  -  Digestate  -  Heat transfer efficiency  -  High-solids  -  Pilot-scale experiments   -  Pretreatment systems  -  Purification systems  -  Thermophilic anaerobic digestion
  Classification code:913.1 Production Engineering  -  901.3 Engineering Research  -  601 Mechanical Design  -  522 Gas Fuels  -  452.4 Industrial Wastes Treatment and Disposal  -  452.3 Industrial Wastes  -  402.1 Industrial and Agricultural Buildings
  DOI:10.6041/j.issn.1000-1298.2012.S0.036
  Database:Compendex

18. Accession number:20124915763411
  Title:Development of measuring system for mechanical properties test of wheat stalk
  Authors:Lü, Zongying1 ; Hou, Jialin1 ; Lang, Xuqiang1 ; Wang, Fengjie1 ; Jiang, Tao1 
  Author affiliation:1  College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
  Corresponding author:Hou, J. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:84-89
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:With the aim to study the mechanical properties of wheat stalks fracture, a kind of control system for the mechanics testing of wheat stalks was developed. The test equipment mainly included control section, executive body, information collection and display module, among which the quite accurate data acquisition system was very simple to operate. The experiment results show that the system is stable and reliable, with the deviation of collection data lower than 0.1%, which can fulfill the system requirements and test the wheat stalks feature in mechanics and physics. It provides an effective and reliable method and tool for material mechanics.
  Number of references:18
  Main heading:Degrees of freedom (mechanics)
  Controlled terms:Equipment testing  -  Fracture testing  -  Mechanical properties  -  Mechanics
  Uncontrolled terms:Control sections  -  Data acquisition system  -  Experimental devices  -  Information collections  -  Material mechanics  -  Measuring systems  -  Mechanical properties test  -  System requirements  -  Test equipments  -  Wheat stalk
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  931.1 Mechanics  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
  DOI:10.6041/j.issn.1000-1298.2012.S0.017
  Database:Compendex

21. Accession number:20124915763442
  Title:Numerical simulation of airflow fields in solar drying chamber by CFD
  Authors:Ren, Haiwei1 ; Li, Jinping2 ; Liu, Zengguang2 ; Yue, Daling2 ; Zhang, Fei1 ; Li, Zhizhong1 
  Author affiliation:1  College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
                  2  College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  Corresponding author:Li, J. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:235-238
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to study the distribution of airflow and construct the movement model of airflow velocity in traditional solar drying chamber, the numerical simulation of three-dimensional steady-state model was carried out to analyze the effect of wind speeds on the airflow distribution in drying chamber by using CFD software Fluent and the k-Ε model. The results showed that compared with the airflow speed of 2 m/s and 10 m/s, the internal wind speed and airflow distribution were better when airflow velocity was 6 m/s.
  Number of references:13
  Main heading:Air
  Controlled terms:Computational fluid dynamics  -  Computer simulation  -  Solar dryers  -  Three dimensional  -  Wind effects
  Uncontrolled terms:Air flow fields  -  Air flow velocity  -  Airflow distribution  -  Airflow speed  -  CFD softwares  -  Drying chambers  -  Movement model  -  Solar drying  -  Steady-state models  -  Wind speed
  Classification code:443.1 Atmospheric Properties  -  723.5 Computer Applications  -  802.1 Chemical Plants and Equipment  -  804 Chemical Products Generally
  DOI:10.6041/j.issn.1000-1298.2012.S0.048
  Database:Compendex

23. Accession number:20124915763404
  Title:Air-suction corn precision metering device with mechanical supporting plate to assist carrying seed
  Authors:Yang, Li1 ; Shi, Song1 ; Cui, Tao1 ; Zhang, Dongxing1 ; Gao, Nana1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Zhang, D. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:48-53
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Focusing on the problem of high missing-seeding rate of commonly used air-suction seed metering device when sowing corn seeds, especially at the edge of fields, a kind of air-suction precision metering device which used a mechanical supporting plate to assist carrying seeds was designed. There were many cells around the edge of the mechanical supporting plate which help to support and grip seeds, so the performance of attaching seeds of the air-suction seeding disc increased remarkably. The parameter of metering-device working area and main structural parameters of the supporting plate were analyzed and determined. Experiment results showed that the seeding quality of the newly designed metering device was satisfactory and the qualified index of seed spacing exceeded 91.40%, the missing-seeding rate and the reseeding rate were less than 3.82% and 4.78% respectively, and the coefficient of variation of seed spacing was less than 18.37%. All of which were obviously better than the corresponding indexes of commonly used air-suction seed metering device under the same working speed and air pressure.
  Number of references:16
  Main heading:Plates (structural components)
  Controlled terms:Atmospheric pressure
  Uncontrolled terms:Air pressures  -  Air-suction  -  Coefficient of variation  -  Corn  -  Corn seeds  -  Mechanical supporting plate  -  Metering devices  -  Precision metering  -  Seed metering devices  -  Seed spacing   -  Structural parameter  -  Working areas  -  Working speed
  Classification code:408.2 Structural Members and Shapes  -  443.1 Atmospheric Properties
  DOI:10.6041/j.issn.1000-1298.2012.S0.010
  Database:Compendex

25. Accession number:20124915763424
  Title:Design and experiment of straw cutting and rubbing process device
  Authors:Yuan, Hongfang1 ; Wang, Decheng1 ; Wang, Guanghui1 ; Fu, Zuoli1 ; Cai, Sangni1 ; Liang, Fang1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Wang, D. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:153-157
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A test-bed was designed for cutting and rubbing straw, an experiment was carried out by cutting and rubbing corn straws with 75% moisture content. By means of orthogonal experimental analysis, the best parameters of this device were as follows: the spindle speed of 1000 r/min, multiple saw cutting blade, three hammers and feeding speed of 0.88 m/s. The result shows that when cutting and rubbing corn straw with 75% moisture content, the breaking rate is higher than 96%.
  Number of references:9
  Main heading:Cutting equipment
  Controlled terms:Cutting  -  Experiments  -  Moisture determination  -  Straw
  Uncontrolled terms:Corn straws  -  Experimental analysis  -  Feeding speed  -  Optimal design  -  Orthogonal experiment  -  Rubbing process  -  Saw cutting  -  Spindle speed
  Classification code:604.1 Metal Cutting  -  821.5 Agricultural Wastes  -  901.3 Engineering Research  -  944.2 Moisture Measurements
  DOI:10.6041/j.issn.1000-1298.2012.S0.030
  Database:Compendex

28. Accession number:20124915763437
  Title:Simulation and experiment of airflow field in cartons of pressure-difference pre-cooling for litchi
  Authors:Yang, Zhou1 ; Chen, Chaohai1 ; Duan, Jieli1 ; Lü, Enli1 ; Liu, Cancheng1 ; Wang, Liang1 
  Author affiliation:1  College of Engineering, South China Agricultural University, Guangzhou 510642, China
  Corresponding author:Yang, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:215-217 201
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The airflow field in cartons of the pressure-difference pre-cooling litchi was simulated by using Fluent software based on standard model and SIMPLE algorithm. The fitting equation of the relationship about length of cartoon and static pressure in cartoon was gotten with the fitting accuracy 0.817, which was verified by experiment. The experiment and simulation shows that the law between the internal pressure and length of the cartoon is positive correlation, and the pressure of air entrance is high, the pressure of air outlet is low.
  Number of references:13
  Main heading:Computer simulation
  Controlled terms:Experiments
  Uncontrolled terms:Air flow fields  -  Fitting accuracy  -  Fitting equations  -  FLUENT software  -  Litchi  -  Positive correlations  -  Pre-cooling  -  SIMPLE algorithm  -  Simulation  -  Standard model   -  Static pressure
  Classification code:723.5 Computer Applications  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.S0.043
  Database:Compendex

29. Accession number:20124915763460
  Title:Expert system design of chassis rapid design for high-speed transplanter
  Authors:Li, Changlin1, 2 ; Wang, Xueliang1 ; Jin, Xiaoping1 ; Mao, Enrong1 ; Song, Zhenghe1  
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China
  Corresponding author:Song, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:323-328
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to solve the problems of excessive dependence on importation, independent design and over-prolonged traditional design cycle and so on, the expression methods and reasoning mechanism of high-speed transplanters were applied. Finally, a designing inference engine and parametric parts models were built. Taking Visual Studio 2008, Oracle, Pro/E as major development platforms, the technologies of secondary development and database programming were adopted in developing the interface of the design system software. By combining the design knowledge, inference engine and parametric model of high-speed transplanter chassis, the knowledge-based rapid design of high-speed transplanter chassis was achieved.
  Number of references:10
  Main heading:Design
  Controlled terms:Chassis  -  Expert systems
  Uncontrolled terms:Design cycle  -  Design knowledge  -  Design systems  -  Development platform  -  High-speed transplanter  -  Independent design  -  Parametric models  -  Rapid design  -  Reasoning mechanism  -  Secondary development   -  Visual studios
  Classification code:408 Structural Design  -  663.2 Heavy Duty Motor Vehicle Components  -  723.4.1 Expert Systems
  DOI:10.6041/j.issn.1000-1298.2012.S0.066
  Database:Compendex

30. Accession number:20124915763420
  Title:Optimized design and experiment on semi-feeding peanut picking device
  Authors:Hu, Zhichao1 ; Wang, Haiou1 ; Peng, Baoliang1 ; Chen, Youqing1 ; Wu, Feng1 ; Zhang, Yanhua1 
  Author affiliation:1  Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
  Corresponding author:Hu, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:131-136
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A semi-feeding peanut picking test-bed was developed to carry out the studies on optimized design and experiment on the structural and motion parameters of semi-feeding peanut picking device. Based on the motion analysis of picking process, ideal position state and parameter relationship of pods cluster during the picking section were determined to ensure that all the pods cluster could pass through the best picking areas by bottom-up and gradual-orderly mode. Influencing factors of picking frequency and strength as well as the influence on the picking performance were analyzed. On the basis of picking mechanism analysis and the experimental verification, the picking roller employed six backward-curved blades. After the multi-criteria response surface experiments, the optimized combination of structural and operational parameters were obtained as follows: the roller length was 1200 mm, the included angle between chain and roller was 7.2°, the roller diameter was 152.5 mm, roller overlap distance was 5 mm, roller rotate speed was 371 r/min, chain conveying speed was 1.025 m/s.
  Number of references:12
  Main heading:Rollers (machine components)
  Controlled terms:Chain conveyors  -  Design  -  Experiments  -  Feeding  -  Oilseeds  -  Optimization
  Uncontrolled terms:Experimental verification  -  Mechanism analysis  -  Motion analysis  -  Motion parameters  -  Multi-criteria  -  Operational parameters  -  Optimization design  -  Optimized designs  -  Overlap distance  -  Peanut   -  Picking device  -  Response surface  -  Roller diameter  -  Rotate speed  -  Semi-feeding
  Classification code:921.5 Optimization Techniques  -  901.3 Engineering Research  -  821.4 Agricultural Products  -  692.1 Conveyors  -  691.2 Materials Handling Methods  -  601.2 Machine Components  -  408 Structural Design
  DOI:10.6041/j.issn.1000-1298.2012.S0.026
  Database:Compendex

34. Accession number:20124915763434
  Title:Device for rapid nondestructive detection of pork freshness based on multispectral imaging technology
  Authors:Li, Cuiling1 ; Peng, Yankun1 ; Tang, Xiuying1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Peng, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:202-206
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A rapid and nondestructive detection device for pork freshness with associated composite quality parameters based on multispectral imaging technology was designed. The system included hardware system and software system. Hardware system consisted of a single-chip microcomputer control unit, light source unit, image acquisition system, data processing unit and LCM display unit. Software system was designed in the ICCAVR development environment programmed by C language. The software was built to control image acquisition module, filter switching module, LCM display module and communication module with a PC. After debugging and experiment of the software and hardware systems, this device could meet the speed requirement of detecting a sample in less than 10 s, having the function of nondestructive and rapid detection.
  Number of references:14
  Main heading:Program debugging
  Controlled terms:C (programming language)  -  Computer debugging  -  Computer software  -  Hardware  -  Image acquisition  -  Imaging techniques  -  Light sources  -  Meats  -  Switching circuits
  Uncontrolled terms:Acquisition modules  -  C language  -  Communication modules  -  Data processing units  -  Development environment  -  Freshness  -  Hardware system  -  Image acquisition systems  -  Multispectral imaging  -  Non destructive   -  Nondestructive detection  -  Pork meat  -  Quality parameters  -  Rapid detection  -  Single chip microcomputers  -  Software systems  -  Speed requirement  -  Switching modules
  Classification code:822.3 Food Products  -  746 Imaging Techniques  -  744 Lasers  -  741 Light, Optics and Optical Devices  -  723 Computer Software, Data Handling and Applications  -  721.3 Computer Circuits  -  605 Small Tools and Hardware
  DOI:10.6041/j.issn.1000-1298.2012.S0.040
  Database:Compendex

36. Accession number:20124915763431
  Title:Methane and ammonia emissions patterns during digested slurry storage
  Authors:Huang, Dandan1 ; Luo, Haojie2 ; Ying, Hongcang2 ; Wang, Kaiying1  
  Author affiliation:1  School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
                 2  Zhejiang Environmental Monitoring Center, Hangzhou 310012, China
  Corresponding author:Wang, K. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:190-193
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Measurements of gas emissions (CH4 and NH3) during pig digested slurry storage were carried out by using a dynamic chamber system. Gas emission patterns were obtained. Methane was continuously sampled with gas sampling system (GSS) and analyzed with gas analyzer TEI55i. Ammonia was collected with atmospheric sampling instrument and analyzed with chemical analysis at intervals. The result showed methane and ammonia concentration were both higher at the early days of the storage period. The methane concentration increased in the first 12 d, then began to reduce to only 1.44 mg/m3 on the 32th day. The ammonia concentration increased sharply in the first 12 d, but was not evident in the last two weeks, and reduced to less than 3 mg/m3 after the 40th day. Abatement of methane and ammonia emissions should be effective if mitigation options were implemented in the first 30 days and 40 days of digested slurry storage.
  Number of references:16
  Main heading:Methane
  Controlled terms:Ammonia  -  Gas emissions  -  Methanation
  Uncontrolled terms:Ammonia concentrations  -  Ammonia emissions  -  Dynamic chamber  -  Emission pattern  -  Gas analyzers  -  Gas-sampling systems  -  Methane concentrations  -  Mitigation options  -  Slurry storages  -  Storage periods
  Classification code:451.1 Air Pollution Sources  -  522 Gas Fuels  -  802.2 Chemical Reactions  -  804.2 Inorganic Compounds
  DOI:10.6041/j.issn.1000-1298.2012.S0.037
  Database:Compendex

38. Accession number:20124915763457
  Title:Simulation analysis of effect of compaction on soil stress distribution
  Authors:Zhao, Zhenjia1 ; Zou, Meng1 ; Xue, Long2 ; Wei, Can'gang1 ; Li, Jianqiao1 
  Author affiliation:1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
                 2  School of Mechatronics Engineering, East China Jiaotong University, Nanchang 330013, China
  Corresponding author:Zou, M. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:311-313 338
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The process of wheel compacted soil was simulated by using DEM. The results showed that after the compaction, soil hardness of different depths increased and changed obviously with depth. With the frequency increased, soil particle's contact force increased and longitudinal influence domain deepened. When wheel passed in the first three times, the increasing trend of soil's hardness was obvious. When wheel passed more than three times, the soil's hardness also increased. But the increasing was not obvious. When the layer deep was 15 cm, the hardness of compacted soil would increase by 155.2% when compared with the soil without compaction, the soil compacted six times would only increase by 22.9% when compared with the one compacted three times.
Number of references:11
  Main heading:Soils
  Controlled terms:Compaction  -  Hardness  -  Soil mechanics  -  Stress concentration  -  Wheels
  Uncontrolled terms:Compacted soil  -  Contact forces  -  Influence domains  -  Simulation  -  Simulation analysis  -  Soil compaction  -  Soil particles
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  483.1 Soils and Soil Mechanics  -  536.1 Powder Metallurgy Operations  -  601.2 Machine Components  -  951 Materials Science
  DOI:10.6041/j.issn.1000-1298.2012.S0.063
  Database:Compendex

39. Accession number:20124915763446
  Title:Design of visual position system for litchi picking manipulator
  Authors:Xiong, Juntao1 ; Zou, Xiangjun2 ; Peng, Hongxing2 ; Wu, Dingzhong2 ; Zhu, Mengsi2 
  Author affiliation:1  School of Information, South China Agricultural University, Guangzhou 510642, China
                 2  Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
  Corresponding author:Zou, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:250-255
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A visual positioning system of litchi picking manipulator was established based on the binocular stereo vision. By analyzing the color features of mature litchi, the YCbCr color model was selected. The Otsu algorithm was combined with fuzzy C-means clustering (FCM) to segment litchi fruit and peduncle. The experimental results showed that the effective recognition accuracy of litchi fruit and peduncle reached to 94.2%. The maximum distance between the fruit centroid and peduncle was calculated to determine litchi picking point. The color image matching method based on hue component of color image and the limiting binding method were used to achieve the stereo match of picking point, which realized the spatial position of picking point. Through the analysis of position error, the linear interpolation method was used to realize the positioning error compensation. The positioning experimental results showed that the depth value error was less than 10 mm, which could satisfy the visual accurate position requirements of litchi manipulator.
  Number of references:17
  Main heading:Manipulators
  Controlled terms:Computer vision  -  Image matching  -  Image recognition
  Uncontrolled terms:Binding methods  -  Binocular stereo vision  -  Color features  -  Color images  -  Color models  -  Depth value  -  Fuzzy C means clustering  -  Linear Interpolation  -  Litchi  -  Litchi fruit   -  Matching methods  -  Maximum distance  -  Otsu algorithm  -  Position errors  -  Recognition accuracy  -  Spatial positioning  -  Spatial positions  -  Visual position  -  Visual positioning
  Classification code:716 Telecommunication; Radar, Radio and Television  -  731.5 Robotics  -  741 Light, Optics and Optical Devices  -  741.2 Vision
  DOI:10.6041/j.issn.1000-1298.2012.S0.052
  Database:Compendex

40. Accession number:20124915763421
  Title:Design and analysis of split garlic harvester
  Authors:Xing, Liran1 ; Li, Ruxin1 ; Wang, Tiexin1 ; Zhang, Ji1 
  Author affiliation:1  Mechanical and Electronic Engineering College, Shandong Agricultural University, Taian 271018, China
  Corresponding author:Li, R. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:137-140 111
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Based on agronomic requirements of the garlic harvest, one kind of garlic harvester for split was designed. It included garlic seedling shear and garlic mining which configured in the front and rear of the tractor. It can complete garlic stems shear, garlic mining, garlic soil separation once a time. The garlic vine and garlic stack respectively to facilitate the collection and transport. Garlic was collected with a string bag directly after drying, to avoid leakage and save time and venue. Eccentric linkage vibrated the mining shovel, reduced the traction resistance and reduced energy consumption. Eccentric institutions as well as digging shovel motion simulated and analyzed by Pro/E, so that the whole structure and motion parameters were optimized and laid the foundation for the prototype trial.
  Number of references:10
  Main heading:Harvesters
  Controlled terms:Energy utilization  -  Shovels
  Uncontrolled terms:Design and analysis  -  Digging shovels  -  Garlic seedling shear  -  Mining shovels  -  Motion parameters  -  Traction resistance
  Classification code:405.1 Construction Equipment  -  525.3 Energy Utilization  -  821.1 Agricultural Machinery and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.S0.027
  Database:Compendex

41. Accession number:20124915763445
  Title:Size detection for cherry fruit based on machine vision
  Authors:Wang, Hui1 ; Lei, Yuchun1 ; Kang, Feng2, 3 ; Wang, Qi3 ; Zhao, Bo1 ; Zhang, Qin3  
  Author affiliation:1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
                  2  School of Technology, Beijing Forestry University, Beijing 100083, China
                  3  Center for Precision and Automated Agricultural Systems, Washington State University, WA 99350, United States
 
  Corresponding author:Zhang, Q. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:246-249
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The size of sweet cherries is an important indicator of ripeness and quality. However, as a manual process heavily relying on individual judgment, the operation is labor intensive and subjective. A machine vision system was developed. Three methods were used to measure cheery size. Tests showed that standard deviation was 0.48 mm by using ellipse fitting method. This method was better than others, such as circle fitting method and rotation searching method.
  Number of references:15
  Main heading:Computer vision
  Controlled terms:Fruits
  Uncontrolled terms:Cherry  -  Circle fitting  -  Ellipse fitting  -  Ellipse fitting method  -  Fruit size  -  Labor intensive  -  Machine vision systems  -  Manual process  -  Searching methods  -  Size detection   -  Standard deviation  -  Sweet cherries
  Classification code:723.5 Computer Applications  -  821.4 Agricultural Products
  DOI:10.6041/j.issn.1000-1298.2012.S0.051
  Database:Compendex

43. Accession number:20124915763461
  Title:Dynamic response characteristic simulation of double-action variable displacement plunger pump for sugarcane harvester
  Authors:He, Zhi1 ; Liu, Qingting1 ; Ou, Yinggang1 
  Author affiliation:1  Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
  Corresponding author:Liu, Q. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:329-334 328
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A mathematics model of double-action variable displacement plunger pump was built for sugarcane harvester based on power bond graph. Some nonlinear influence factors were linearized or neglected for the model. The response characteristic of flow, pressure and reversing were analyzed in Matlab/Simulink by changing swash plate angle of Eaton series 1 model No. 64 displacement plunger pump. The results showed that the proposed double-action variable displacement plunger pump had good dynamic response characteristics. It could meet the requirements of the hydraulic drive system on sugarcane harvester.
  Number of references:13
  Main heading:Pumps
  Controlled terms:Dynamic response  -  Graph theory  -  Harvesters
  Uncontrolled terms:Bond graph  -  Hydraulic drive system  -  Mathematics model  -  MATLAB /simulink  -  Response characteristic  -  Simulation  -  Sugarcane harvesters  -  Swash plate  -  Variable displacement
  Classification code:408.1 Structural Design, General  -  618.2 Pumps  -  821.1 Agricultural Machinery and Equipment  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
  DOI:10.6041/j.issn.1000-1298.2012.S0.067
  Database:Compendex

45. Accession number:20124915763400
  Title:Motion analysis and parameter optimization for pot seedling planting mechanism based on up-film transplanting
  Authors:Jin, Xin1 ; Li, Shujun2 ; Yang, Xuejun3 ; Yan, Hua3 ; Wu, Jianmin3 ; Mao, Zhihuai1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
                  3  The Modern Agricultural Equipment Co. Ltd., Beijing 100083, China
  Corresponding author:Li, S. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:29-34
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:During the up-film transplanting for dibble-type transplanters, the mulch film could be easily dilaceraded and scraped. Aiming at this problem, a pot seedling transplanter in duck-beak style was designed while the working principle of it was expounded. The motion mathematical model of its planting mechanism was established. And then, parametric modeling for the planting mechanism based on the model was completed in ADAMS. The influences over the mechanism motion characteristic by some important parameters were analyzed by using the parametric model. In addition, the cave value which formed by the distance between two intersections points of the duck-beak trajectory and ridge line as possible as small was taken as the optimization objective, while the higher upright degree of seedling was ensured. Meanwhile, the optimal parameter combination of planting mechanism was obtained. With it, the cave value was 1.8 mm and the verticality of duck-beak trajectory after transplanting seedlings was higher, and then the demands of up-film transplanting could be met, namely higher upright degree of seedling and without dilacerating films.
  Number of references:10
  Main heading:Optimization
  Controlled terms:Caves  -  Mathematical models
  Uncontrolled terms:Motion analysis  -  Motion characteristics  -  Mulch films  -  Optimal parameter combinations  -  Parameter optimization  -  Parametric modeling  -  Parametric models  -  Pot seedling transplanter  -  Ridge lines  -  Up-film transplanting   -  Working principles
  Classification code:481.1 Geology  -  921 Mathematics  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.S0.006
  Database:Compendex

47. Accession number:20124915763439
  Title:Design and experiment of heat pump assisted solar energy heat-storage drying equipment for herbage seed
  Authors:Wang, Quanxi1, 2 ; Wang, Decheng1 ; Du, Jianqiang2 ; Zhai, Gaixia2 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  Huhhot Branch, China Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
  Corresponding author:Wang, D. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:222-226 265
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Aiming at herbage seed drying equipment problems of power consumption, air discharge and solar energy application, a drying mode was proposed. Basis heating was supplied by thermal-stored solar energy, and air charge was dehumidified and reused by heat pump. Main working parts, such as thermal collector, thermal storage and heat pump, and whole drying machine were designed. Using movable design idea, thermal collector was controllable and whole machine was placed safely. Performance test results showed that handling capacity reached to 161 kg/h, power handling capacity achieved to 8.4 kg/(kW·h), the drying capacity reached to 3367 kg·%/h, and dry strength achieved to 6.7 kg/(m3·h). The power consumption ration of solar PCM heat-storage drying, solar energy and heat pump teamwork drying, heat-pump drying and electricity power drying was 0.9:1.0:1.2:1.5.
  Number of references:10
  Main heading:Drying
  Controlled terms:Heat pump systems  -  Heat storage  -  Humidity control  -  Solar energy
  Uncontrolled terms:Air charge  -  Air discharge  -  Design ideas  -  Drying capacity  -  Drying equipment  -  Drying machines  -  Handling capacity  -  Heat pumps  -  Performance tests  -  Power handling capacity   -  Solar energy applications  -  Thermal collectors  -  Thermal storage  -  Whole machine  -  Working parts
  Classification code:402 Buildings and Towers  -  615.2 Solar Power  -  641.2 Heat Transfer  -  642.1 Process Heating
  DOI:10.6041/j.issn.1000-1298.2012.S0.045
  Database:Compendex

50. Accession number:20124915763397
  Title:Optimal matching of transmission system for multi-purpose self-propelled pasture plot
operation machine
  Authors:Gao, Yang1 ; Wang, Decheng1 ; Fang, Xianfa2 ; Zhao, Jianzhu1 ; Wang, Guanghui1 ; Wang, Zongwen1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Wang, D. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:11-18 23
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Based on the engine experiment, the transmission system of multi-purpose (rotary tilling, seeding, mowing and transporting) self-propelled pasture plot operation machine was optimally matched by using optimum design software which was developed in Matlab. The best matching scheme was obtained after simulation of power performance and fuel economy of transmission system and matching calculation between engine and transmission system. The selected matching scheme of engine and transmission system was optimized further, and then the transmission parameters were obtained after optimization. The results of transmission parameters were as follows: transmission ratio of first speed was 2.0039, second speed was 1.4595, third speed was 0.9775, fourth speed was 0.6751, reverse gear was 1.9840, transmission ratio of high-gear and low-gear were 1.0478 and 3.1102, respectively, and transmission ratio of central drive was 5.3711. Power performance and fuel economy of machine were improved to some extent, and matching degree between engine and transmission system was increased by 6.29% after optimization.
  Number of references:14
  Main heading:Transmissions
  Controlled terms:Agriculture  -  Fuel economy  -  MATLAB  -  Optimization
  Uncontrolled terms:Matching degree  -  Matching scheme  -  Multi-purpose  -  Operation machine  -  Optimal matching  -  Optimum design software  -  Pasture plot  -  Power performance  -  Reverse gears  -  Transmission parameters   -  Transmission ratios  -  Transmission systems
  Classification code:521 Fuel Combustion and Flame Research  -  602.2 Mechanical Transmissions  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  921 Mathematics  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.S0.003
  Database:Compendex

51. Accession number:20124915763450
  Title:Visual navigation system path recognition algorithm based on DaVinci platform for combine harvester
  Authors:Zhang, Chengtao1, 2 ; Tan, Yu1 ; Wu, Gang1 ; Wang, Shumao1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  Automobile Engineering Department, Guangxi University of Technology, Liuzhou 545006, China
  Corresponding author:Tan, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:271-276
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:According to combine visual navigation of real-time and robustness requirement, based on the DaVinci platform, a path recognition algorithm was designed. After analyzing the texture measure in the image of wheat harvest, the path recognition algorithm of visual navigation, on account of an improved smoothness texture feature, was put forward. The original brightness image was converted into horizontal smoothness image, by the image texture feature of the horizontal smoothness. The harvest boundary was extracted from the smoothness image by using adaptive threshold segmentation, and finally visual navigation path could be determined by Hough transform. In order to validate the algorithm in the operation of the DaVinci platform, the navigation experiments of wheat harvest by combine harvester were conducted. The experimental results showed that the algorithm had the high real-time and good robustness. Its average rate of recognizing navigation line was up to 28.6 frame per second. Path recognition effect was good in a variety of environments. Algorithm operation was stable and reliable, and to continue operating time was unlimited.
  Number of references:11
  Main heading:Image texture
 
  Controlled terms:Algorithms  -  Feature extraction  -  Harvesters  -  Harvesting  -  Hough transforms  -  Image segmentation  -  Navigation systems  -  Textures
  Uncontrolled terms:Adaptive threshold segmentation  -  Algorithm operation  -  Average rate  -  Combine harvesters  -  Davinci  -  Operating time  -  Path recognition  -  Texture features  -  Visual Navigation  -  Wheat harvest
  Classification code:933 Solid State Physics  -  921.3 Mathematical Transformations  -  921 Mathematics  -  821.3 Agricultural Methods  -  821.1 Agricultural Machinery and Equipment  -  723.2 Data Processing and Image Processing  -  723 Computer Software, Data Handling and Applications  -  716 Telecommunication; Radar, Radio and Television  -  434.4 Waterway Navigation
  DOI:10.6041/j.issn.1000-1298.2012.S0.056
  Database:Compendex

52. Accession number:20124915763423
  Title:Design and experiment of walnut-cracking device
  Authors:Li, Zhongxin1 ; Liu, Kui1 ; Yang, Liling1 ; Abulizi, Basiti1 ; Ma, Wenqiang1 ; Yan, Shengkun1 
  Author affiliation:1  Agricultural Mechanization Institute, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
  Corresponding author:Li, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:146-152
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to study the walnut-cracking broken mechanism and performance of walnut-cracking device, the cracking experimental research for certain physical characteristics was done by using a walnut-cracking device based on extrusion friction mechanism. On this basic, walnut varieties, size (length of edge), the moisture content of walnut shell, which were investigated by single-factor experiments, were tested to specify the effects of walnut cracking. The result is that the optimal scope of walnut and machine was as follows: 6° as cone basket angle of device, edge length above 28 mm, thickness of the shell below 2 mm and 8%-10% as moisture content of walnut.
  Number of references:22
  Main heading:Experiments
  Controlled terms:Moisture determination
  Uncontrolled terms:Analysis of force  -  Edge length  -  Experimental research  -  Friction mechanism  -  Performance tests  -  Physical characteristics  -  Walnut  -  Walnut shells
  Classification code:901.3 Engineering Research  -  944.2 Moisture Measurements
  DOI:10.6041/j.issn.1000-1298.2012.S0.029
  Database:Compendex

53. Accession number:20124915763399
  Title:Effective clearance calculation of three-point hitch linkage for rototilling-planting machine
  Authors:Qi, Jiangtao1 ; Jia, Honglei1 ; Zhuang, Jian1 ; Fan, Xuhui2, 3 ; Liu, Chunxi3 ; Liu, Dandan2 
  Author affiliation:1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
                 2  School of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
                 3  Jilin Provincial Academy of Agricultural Machinery, Changchun 130022, China
  Corresponding author:Jia, H. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:24-28
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Taking separated multeity machine as the research object, the three-point hitch linkage for the rototilling-planting combined machine was designed. The design was started with the principle of three-point hitch linkage. The effective clearance of single combined mechanism was analyzed. The capsize resistance was analyzed by the unit's longitudinal stability coefficient and climbing stability coefficient. The maximum effective distance was 41 cm. From analyzing the moving states of rotary blades, the place of clods and the muzzle velocity, the minimum effective distance was 19 cm after several times of calculation and experiment.
  Number of references:11
  Main heading:Mechanical engineering
  Controlled terms:Agricultural engineering
  Uncontrolled terms:Combined mechanisms  -  Effective clearance  -  Effective distance  -  Hitch linkage  -  Longitudinal stability  -  Muzzle velocity  -  Research object  -  Rotary blades  -  Rototilling-planting combine machine  -  Stability coefficient
  Classification code:608 Mechanical Engineering, General  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.S0.005
  Database:Compendex

55. Accession number:20124915763433
  Title:Power consumption experiment of corn straw adjusting material device based on horizontal roller
  Authors:Dong, Xin1 ; Liu, Liyi1 ; Li, Wenzhe1 ; Li, Zihui1 ; Zhang, Yingwei1 ; Zhang, Hongqiong1 
  Author affiliation:1  College of Engineering, Northeast Agricultural University, Harbin 150030, China
  Corresponding author:Dong, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:198-201
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to research operation parameters of corn straw adjusting material device based on horizontal roller on the influence law of power consumption, a self-developed straw adjusting material test device and power measurement and control system were used to implement continuous adjusting material orthogonal test of corn straw. The influence of the adjusting material roller's working clearance, the adjusting material roller's speed of rotation and the feeding speed of straw on power consumption of the straw adjusting material was analyzed. Research showed that the adjusting material roller's working clearance significantly influenced on the power consumption. The parameters combination were the adjusting material roller's working clearance of 2.5 mm, the adjusting material roller's speed of rotation of 88-95 r/min, the feeding speed of 3.3-4.0 km/h, which met the requirements of adjusting material performance and reducing power consumption.
  Number of references:10
  Main heading:Materials
  Controlled terms:Electric power utilization  -  Experiments  -  Rollers (machine components)
  Uncontrolled terms:Adjusting material device  -  Corn straws  -  Feeding speed  -  Material performance  -  Material tests  -  Measurement and control  -  Orthogonal experiment  -  Orthogonal test  -  Research operations  -  Speed of rotation
  Classification code:601.2 Machine Components  -  706.1 Electric Power Systems  -  901.3 Engineering Research  -  951 Materials Science
  DOI:10.6041/j.issn.1000-1298.2012.S0.039
  Database:Compendex

56. Accession number:20124915763425
  Title:End-of-line quality inspection system for combine harvester based on virtual instrument
  Authors:Wang, Ling1 ; Wang, Shumao1 ; Sun, Chao1 ; Zhang, Junchao1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Wang, S. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:158-161
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:An automated inspection system based on virtual instrument technology was proposed for machine quality improvement. To meet national quality standard of the combine harvester, a group of testing items were chosen and built in the developed system. To obtain better efficiency and accuracy, rapid measurement technique for different measurement parameters were evaluated. Taking brake performance test for example, a reaction type tester was constructed for brake force measurement. Customized software programmed based on LabWindows/CVI and multi-channel data acquisition device were also integrated into the inspection system for better system performance. The developed inspection system was improved for combine harvester quality inspection with high accuracy and efficiency.
  Number of references:10
  Main heading:Inspection equipment
  Controlled terms:Brakes  -  Digital instruments  -  Harvesters  -  Inspection
  Uncontrolled terms:Automated inspection systems  -  Brake performance  -  Combine harvesters  -  Customized software  -  End-of-line  -  Inspection system  -  LabWindows/CVI  -  Measurement parameters  -  Multichannel data  -  Quality improvement   -  Quality inspection  -  Quality inspection systems  -  Quality standard  -  Rapid measurement  -  Virtual instrument  -  Virtual instrument technology  -  Visual instruments
  Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  913.3.1 Inspection  -  821.1 Agricultural Machinery and Equipment  -  602 Mechanical Drives and Transmissions
  DOI:10.6041/j.issn.1000-1298.2012.S0.031
  Database:Compendex

57. Accession number:20124915763465
  Title:Performance analysis of bionic jute fiber friction materials
  Authors:Chai, Xingwang1 ; Yan, Zhifeng1 ; Lin, Fudong1 ; Sun, Junjie1 ; Chen, Donghui1 ; Ma, Yunhai1  
  Author affiliation:1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
  Corresponding author:Ma, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:348-351
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Taking hair and wool fibers as the prototype, the structure bionics of jute fibers was conducted in two modified ways: room temperature alkali treatment and heat treatment. The impact of bionic spiral jute fibers on the frictional properties of the friction materials was investigated. The results showed that when the content of spiral jute fiber was 3% and the helix angle was 66°, friction factor met the brake requirements and its abrasion resistance achieved the most excellent. Spiral jute fiber increased the friction factor of friction material at 100°C and 150°C. The friction factor of the spiral jute fiber reinforced friction materials decreased with the increase of fiber at 200°C and 250°C. The friction factor of straight jute fiber got the highest. Spiral jute fiber friction materials showed good wear resistance at 300°C and 350°C. The friction factor of the friction material decreased with the decrease of helix angle of spiral jute fiber.
  Number of references:10
  Main heading:Fibers
  Controlled terms:Bionics  -  Friction materials  -  Jute fibers  -  Wear resistance  -  Wool fibers
  Uncontrolled terms:Alkali treatment  -  Fiber reinforced  -  Friction factors  -  Frictional properties  -  Helix angles  -  Performance analysis  -  Room temperature
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  601.1 Mechanical Devices  -  731.1 Control Systems  -  812 Ceramics, Refractories and Glass  -  817 Plastics and Other Polymers: Products and Applications  -  819.1 Natural Fibers
  DOI:10.6041/j.issn.1000-1298.2012.S0.071
  Database:Compendex

59. Accession number:20124915763410
  Title:Calibration experiment of grain loss monitoring sensor in combine harvester
  Authors:Li, Yaoming1 ; Liang, Zhenwei1 ; Zhao, Zhan1 ; Xu, Lizhang1 ; Chen, Yi1 ; Tang, Zhong1 
  Author affiliation:1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Li, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:79-83
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to test the performance of grain loss monitoring sensor and search for the best installed location, a calibration test-bench which composed of lifting platform, lifting driving mechanism, feeding device and the sensor installation platform was designed. Full wheat grain, blighted wheat grain and stalks with different lengths were selected as calibration materials to test the performance of grain loss monitoring sensors in different installation heights and installation angles. The laboratory tests showed that for different moisture wheat samples, the measurement error of grain loss monitoring sensor could be limited to less than 4.8%. The installed location of the grain loss monitoring sensor was determined when monitoring the separate loss according to laboratory calibration results. The field tests showed that the average separate loss monitoring error was 3.40%.
  Number of references:10
  Main heading:Grain (agricultural product)
  Controlled terms:Calibration  -  Experiments  -  Harvesters  -  Separation  -  Testing
  Uncontrolled terms:Calibration materials  -  Combine harvesters  -  Driving mechanism  -  Field test  -  Grain loss  -  Installation angle  -  Laboratory test  -  Monitoring sensors  -  Sensor installation  -  Test-bench   -  Wheat grains
  Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  901.3 Engineering Research  -  821.4 Agricultural Products  -  821.1 Agricultural Machinery and Equipment  -  802.3 Chemical Operations  -  423.2 Non Mechanical Properties of Building Materials: Test Methods
  DOI:10.6041/j.issn.1000-1298.2012.S0.016
  Database:Compendex

60. Accession number:20124915763413
  Title:Performance test of yield monitor system for grain combine harvester
  Authors:Wu, Jia1 ; Li, Minzan1 ; Zheng, Lihua1 ; An, Xiaofei1 ; Zhang, Yajing2 
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Li, M. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:95-99 105
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Ag Leader grainyield monitor system was introduced. The yield monitor system experiment was carried out on the domestic medium and small combine harvester. The grain yield system was mainly composed of multi-channel sensors including grain flow sensor, terminal display processor and GPS system. First, the calibration experiment of system was executed. And then, the harvesting experiment of winter wheat in the field was performed and the acquired data were processed. With the analysis of spatial autocorrelation method, yield data presented high dependence within 20 m. Semi-variance analysis showed that the variation of the yield data was obvious which presented the property of aggregated distribution. The yield map based on Kriging interpolation showed the trend of patch distribution and the properties of aggregated distribution. The experimental results could provide necessary theoretical evidence for the application of precision agriculture.
  Number of references:13
  Main heading:Grain (agricultural product)
  Controlled terms:Aggregates  -  Agriculture  -  Experiments  -  Harvesters  -  Interpolation  -  Sensors
  Uncontrolled terms:Combine harvesters  -  Grain flow  -  Grain yield  -  Kriging interpolation  -  Monitor system  -  Multi channel sensors  -  Performance tests  -  Precision Agriculture  -  Semi-variance analysis  -  Spatial autocorrelation methods   -  Winter wheat  -  Yield monitor systems
  Classification code:406 Highway Engineering  -  801 Chemistry  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  901.3 Engineering Research  -  921.6 Numerical Methods
  DOI:10.6041/j.issn.1000-1298.2012.S0.019
  Database:Compendex

63. Accession number:20124915763447
  Title:Design for automatic sequencing and supplying device for grafting clips
  Authors:Jiang, Kai1 ; Zhang, Qian2 ; Wang, Xiu1 ; Feng, Qingchun1 ; Guo, Rui1 
  Author affiliation:1  Beijing Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China
                 2  Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Wang, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:256-261
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Based on studies of automatic sequencing and supplying of grafting clips, the mechanical model of clips in disc-shaped vibratory feeder was established. The conditions of clip bouncing and sliding in delivering were determined. When disc acceleration a2 was larger than 2.37 g, clips began to bounce. When a1l was 0.47g, a2l was 0.41g, perfect state continuous sliding of clips could be achieved. The device included disc-shaped vibratory feeder and automatic clip-delivering mechanism. The disc was controlled by the adoption of anticlockwise clip-delivering and frequency adjustment. The automatic clip-delivering mechanism was driven by cylinder. Experiments showed that when vibration frequency was 48 Hz, the angle of slideway was 45°, clip-pushing pressure was 0.4 MPa, delivering speed was 60 clips per minute, and success average of clipping was 96%, which could meet the need of the type TJ-800 grafting machine.
  Number of references:18
  Main heading:Grafting (chemical)
  Controlled terms:Agricultural engineering  -  Mechanical engineering
  Uncontrolled terms:Clip  -  Frequency adjustment  -  Mechanical model  -  Vibration frequency  -  Vibratory feeders  -  Vibratory sequencing
  Classification code:608 Mechanical Engineering, General  -  815.1 Polymeric Materials  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.S0.053
  Database:Compendex

66. Accession number:20124915763402
  Title:Breadth control of scatter system for fertilizer spreader
  Authors:Zhang, Rui1 ; Wang, Xiu1 ; Zhou, Jianjun1 ; Ma, Wei1 ; Zou, Wei1 ; Feng, Qingchun1 
  Author affiliation:1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Wang, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:39-43
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A closed loop control system for adjusting fertilizer scatters breath was developed based on the PWM technology. The module circuit, sensor installation and close-loop feedback method were designed. The relation of disc rotation speed and scatters breath was built with experiment. The breadth value could be input to system directly according to the operation needs, so the rotating disk could work under specifying speed which improved operated performance and intelligence of the machine. Experiment showed that with the different operation speed and different width scatters, the maximum error and the minimum error between actual scatters breadth and target scatters breadth was 5.50% and 2.86%, respectively. The designed system can meet the practical production requirements.
  Number of references:15
  Main heading:Fertilizers
  Controlled terms:Experiments  -  Pulse width modulation  -  Rotating disks  -  Spreaders
  Uncontrolled terms:Close loop  -  Maximum error  -  Operation speed  -  Practical production  -  Rotation speed  -  Scatter system  -  Sensor installation
  Classification code:601.2 Machine Components  -  716 Telecommunication; Radar, Radio and Television  -  804 Chemical Products Generally  -  821.1 Agricultural Machinery and Equipment  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.S0.008
  Database:Compendex

68. Accession number:20124915763440
  Title:Improved design of air collector in solar energy forage drying equipment
  Authors:Du, Jianqiang1 ; Yang, Shikun1 ; Liu, Guilin1 ; Guo, Zhiping2 
  Author affiliation:1  Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
                  2  College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China
  Corresponding author:Yang, S. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:227-230
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In the improved process of solar energy forage drying equipment, the key component of solar energy forage drying equipment was air heat collector. In order to improve equipment productivity, the structure and working principle of air heater were analyzed. Air heat collecting efficiency was improved. Through the performance experiment, the honeycomb structure of the air collector was very important in the solar energy forage drying equipment. Productivity increased by 20%. The air collector efficiency increased by 50%.
  Number of references:16
  Main heading:Collector efficiency
  Controlled terms:Drying  -  Equipment  -  Productivity
  Uncontrolled terms:Dry  -  Forage  -  Heat collector  -  Solar  -  Thermal efficiency
  Classification code:642.1 Process Heating  -  702.3 Solar Cells  -  901 Engineering Profession  -  913.1 Production Engineering
  DOI:10.6041/j.issn.1000-1298.2012.S0.046
  Database:Compendex

70. Accession number:20124915763448
  Title:GPS/DR integrated navigation positioning method for agricultural machinery
  Authors:Zhou, Jianjun1 ; Wang, Xiu1 ; Zhang, Rui1 ; Liu, Gang2 ; Ma, Wei1 ; Feng, Qingchun1 
  Author affiliation:1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
                 2  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
  Corresponding author:Wang, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:262-265
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to improve positioning accuracy of GPS/DR integrated navigation, the fuzzy adaptive Kalman filter method was analyzed. Experiment was carried out on the modified agricultural machinery. Experiment results showed that the fuzzy adaptive Kalman filtering could inhibit the influence of unusual values on the localization precision of the system, and the system positioning accuracy of the proposed method was better than single GPS. The average positioning error of the x and y directions were 0.13 m and 0.20 m by using the fuzzy adaptive Kalman filter. Positioning curves was smoother after filer.
  Number of references:8
  Main heading:Global positioning system
  Controlled terms:Agricultural machinery  -  Experiments  -  Kalman filters
  Uncontrolled terms:Average positioning error  -  Dead reckoning  -  Fuzzy adaptive  -  Fuzzy adaptive kalman filters  -  Integrated navigation  -  Positioning  -  Positioning accuracy  -  Positioning methods
  Classification code:716.3 Radio Systems and Equipment  -  731.1 Control Systems  -  821.1 Agricultural Machinery and Equipment  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.S0.054
  Database:Compendex

71. Accession number:20124915763453
  Title:Development of biological impedance testing instrument for rapid detection of AIV
  Authors:Mo, Jiasi1 ; Chen, Zhao1 ; Liu, Hongshan1  
  Author affiliation:1  College of Engineering, South China Agricultural University, Guangzhou 510642, China
  Corresponding author:Liu, H. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:289-294
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The avian influenza virus (AIV) was diagnosed by measuring the impedance of the biological chip's electrodes, which was a development direction of the AIV rapid detection. The high precision impedance conversion chip (AD5933) and the ATmega16 MCU were used. Through the circuit design and commissioning, an impedance testing instrument with the energizing frequency range of 1-100 kHz was developed. The impedance measurement range was 1-1000 kΩ. This impedance testing instrument has capacity to measure one frequency point and sweep frequency testing. To ensure the accuracy of the instrument, a calibration network with 35 different combinations of impedance was used for providing real-time calibration. The BK866(accuracy of 0.2%) impedance testing instrument for adjusting the system can make sure that the testing accuracy of captance was above 3%.
  Number of references:10
  Main heading:Instrument testing
  Controlled terms:Biosensors  -  Calibration  -  Instruments  -  Viruses
  Uncontrolled terms:ATmega16  -  Avian influenza  -  Biological chip  -  Biological impedance  -  Calibration network  -  Circuit designs  -  Development directions  -  Frequency ranges  -  Frequency testing  -  High precision   -  Impedance conversion  -  Impedance measurement  -  Impedance testing  -  One frequency  -  Rapid detection  -  Real-time calibration  -  Testing accuracy
  Classification code:461.9 Biology  -  732 Control Devices  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
  DOI:10.6041/j.issn.1000-1298.2012.S0.059
  Database:Compendex

72. Accession number:20124915763419 
Title:Aerodynamic characteristics measurement of extraction components for rape combine harvester
  Authors:Chen, Li1 ; Liao, Qingxi1 ; Zong, Wangyuan1 ; Liao, Yitao1 ; Li, Haitong1 ; Huang, Peng1 
  Author affiliation:1  College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:Liao, Q. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:125-130
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Extraction components of threshing unit for rape combine harvester are complicated, including rapeseed, stems, pod shells and light debris. To study the aerodynamic characteristics of rape extraction components, test suspension velocities of these components were conducted in type PS-20 measuring test-bed respectively. The results showed that the linear relationship between suspension velocity of rapeseed and particle size was exposed. The quadratic polynomial relationship between the suspension velocity of stem and diameter was exposed. The stem length (<100 mm) revealed there was no significant effect on the suspension velocity. Suspension velocities of rapeseed and stems were observed to be closer (7-10 m/s), higher than suspension velocities of pod shells and light debris (1-3 m/s). Meanwhile, suspension velocities of rapeseed and pod shells both was exposed a linear increase relationship with the moisture content, while suspension velocities of stems and light debris both was exposed an exponential increase relationship with the moisture content. It's concluded that the difference of their suspension velocities could be applied for cleaning the extraction components. The suspension velocities of light debris and pod shells were small in extraction components. The air flow cleaning method was suggested to separated them and the airflow velocity was 4-6 m/s.
  Number of references:17
  Main heading:Well drilling
  Controlled terms:Aerodynamics  -  Air  -  Cleaning  -  Combines  -  Debris  -  Harvesters  -  Moisture determination  -  Oilseeds  -  Shells (structures)
  Uncontrolled terms:Aerodynamic characteristics  -  Air flow  -  Air flow velocity  -  Cleaning methods  -  Combine harvesters  -  Exponential increase  -  Linear relationships  -  Quadratic polynomial  -  Rape  -  Rape combine   -  Stem length  -  Suspension velocity  -  Threshing units
  Classification code:944.2 Moisture Measurements  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  651.1 Aerodynamics, General  -  446.1 Water Supply Systems  -  408.2 Structural Members and Shapes
  DOI:10.6041/j.issn.1000-1298.2012.S0.025
  Database:Compendex

73. Accession number:20124915763463
  Title:Tribological properties of Cyclina sinensis shell cuticle
  Authors:Yan, Zhifeng1 ; Chai, Xingwang1 ; Shen, Shenglong1 ; Chen, Donghui1 ; Wang, Zhiqin1 ; Ma, Yunhai1  
  Author affiliation:1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
  Corresponding author:Ma, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:339-343
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The surface roughness and tribological properties of Cyclina sinensis shell cuticle were studied by using confocal laser scanning microscopy (CSLM) and UMT-2 micro-friction and wear testing machine respectively. The results showed that the descending order of the roughness of different parts of Cyclina sinensis shell cuticle was as follows: dorsal Cyclina sinensis shell, posterior part of Cyclina sinensis shell, abdominal Cyclina sinensis shell and anterior part of Cyclina sinensis shell. The transverse friction coefficient (TFC) was greater than the longitudinal friction coefficient (LFC) of the cuticle surface in the front and abdomen of Cyclina sinensis shell. However, TFC was less than LFC of that of posterior and back of Cyclina sinensis shell. This suggested that the tribological properties of Cyclina sinensis shell cuticle transverse and longitudinal had heterosexual characteristics. Comparing to the anhydrous test conditions, under the water lubrication conditions, TFC and LFC of the cuticle surface of the front of Cyclina sinensis shell both increased, TFC and LFC of the cuticle surface of the back of Cyclina sinensis shell both decreased, and TFC of the surface of the cuticle of the abdomen of Cyclina sinensis shell decreased, but LFC increased.
  Number of references:9
  Main heading:Shells (structures)
  Controlled terms:Confocal microscopy  -  Friction  -  Surface roughness  -  Tribology
  Uncontrolled terms:Confocal laser scanning microscopy  -  Cuticle  -  Cyclina sinensis  -  Friction coefficients  -  Test condition  -  Tribological properties  -  Water lubrication  -  Wear-testing
  Classification code:408.2 Structural Members and Shapes  -  744.9 Laser Applications  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids
  DOI:10.6041/j.issn.1000-1298.2012.S0.069
  Database:Compendex

74. Accession number:20124915763462
  Title:3-D surveying and gaits analysis of Chinese mitten crab in smooth road
  Authors:Li, Jianqiao1 ; Zhang, Xiaodong1 ; Zou, Meng1 ; Li, Hao1 ; Wang, Yang1 ; Shi, Ruiyang1 
  Author affiliation:1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
  Corresponding author:Li, J. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:335-338
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to investigate the gait of Chinese mitten crab, a motion images recorded and analyzed systems was established with high speed camera and 3-D motion analysis software. The results showed that Chinese mitten crab performed alternating tetrapod gait when walking on smooth road. Adjacent ipsilateral and segmental pairs of legs alternated with each other; Subadjacent ipsilateral legs and diagonal pairs of legs moved together. Duty factor of each leg was (55.60±7.53)%, which indicated that Chinese mitten crab made its body more stable during walking through increasing support phase.
  Number of references:13
  Main heading:Shellfish
  Controlled terms:Biomechanics  -  Roads and streets
  Uncontrolled terms:3-D motion analysis  -  Chinese mitten crabs  -  Gait  -  Motion analysis  -  Motion images  -  Support phase  -  Walking through
  Classification code:406.2 Roads and Streets  -  461.3 Biomechanics, Bionics and Biomimetics  -  461.9 Biology
  DOI:10.6041/j.issn.1000-1298.2012.S0.068
  Database:Compendex

75. Accession number:20124915763454
  Title:Simulation of temperature control algorithm in micro flow-through PCR system
  Authors:Li, Li1 ; Zhu, Ling2 ; Jiang, Qin1 ; Zhang, Miao1  
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
                 2  Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  Corresponding author:Zhang, M. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:295-299
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Micro flow-through PCR could make not only qualitative analysis, but also quantitative analysis of the water sample. The special heater arrangement allows the implementation of up to 40 cycles on the footprint of a sample. The key factor of PCR instrument is precise temperature control, so the temperature control algorithm occupies an important position in whole system. PID and fuzzy-PID algorithms were designed. The simulation model was constructed and experimented with Simulink of Matlab software. The simulation results showed that overshoot of PID algorithm was 8.5%, adjustment time was 3.4 s, the control accuracy was 0.044°C. Overshoot of fuzzy-PID algorithm was 1.45%, adjustment time was only 1.94 s, the control accuracy was 0.015°C. Obviously, fuzzy-PID algorithm would overcome the defect of large overshoot of traditional PID, and the adjustment time was shorter.
  Number of references:13
  Main heading:Algorithms
  Controlled terms:Computer simulation  -  MATLAB  -  Temperature control
  Uncontrolled terms:Control accuracy  -  Flowthrough  -  Fuzzy-PID  -  Key factors  -  Matlab- software  -  PID  -  PID Algorithm  -  Qualitative analysis  -  Simulation model  -  Simulink   -  Water samples
  Classification code:723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications  -  731.3 Specific Variables Control  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.S0.060
  Database:Compendex

76. Accession number:20124915763456
  Title:Generating capacity prediction of automatic tracking power generation system on inflatable membrane greenhouse attached photovoltaic
  Authors:Xu, Xiaoli1 ; Liu, Qiushuang2 ; Minami, Mamoru3 
  Author affiliation:1  Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing 100192, China
                  2  IC Manufacturing Process Equipment R and D Center, Beijing Sevenstar Electronics Co. Ltd., Beijing 101312, China
                  3  Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
  Corresponding author:Xu, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:305-310 299
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A method which can forecast generating capacity of automatic tracking power system on inflatable membrane greenhouse attached photovoltaic was proposed based on the self-adaptive variation particle swarm neural network by adding with weather information. Firstly, through combining historical data of electricity production and meteorological data, the main factors of the impact on generating capacity of power generation system on inflatable membrane greenhouse attached photovoltaic was analyzed. Then, the neural network forecasting model was established by combining the weather forecast. The self-adaptive variation particle swarm algorithm was introduced to improve the training effect by tackling the problems of slowly converging, easily falling into local optimum, and difficultly converging existed in traditional neural network forecasting model based on gradient-descent BP algorithm. The neural network was optimized with adaptable mutation particle swarm optimization (AMPSO) algorithm. The mutation was put into particle swarm optimization (PSO) algorithm to find local optimal value. Experimental results showed that the entire convergence performance was significantly improved by adopting AMPSO and the premature convergence problem can be effectively avoided in PSO.
  Number of references:10
  Main heading:Neural networks
  Controlled terms:Algorithms  -  Greenhouses  -  Meteorology  -  Particle swarm optimization (PSO)  -  Servomechanisms  -  Solar energy  -  Weather forecasting
  Uncontrolled terms:Automatic tracking  -  BP algorithm  -  Convergence performance  -  Electricity production  -  Forecasting models  -  Generating capacity  -  Gradient-descent  -  Historical data  -  Inflatable membrane  -  Local optima   -  Local optimal  -  Meteorological data  -  Mutation particle swarm optimizations  -  Particle swarm  -  Particle swarm algorithm  -  Particle swarm optimization algorithm  -  Photovoltaic  -  Photovoltaic power generation systems  -  Power generation systems  -  Premature convergence   -  Self-adaptive  -  Training effects  -  Weather forecasts  -  Weather information
  Classification code:921 Mathematics  -  723.4 Artificial Intelligence  -  723 Computer Software, Data Handling and Applications  -  705 Electric Generators and Motors  -  615.2 Solar Power  -  443 Meteorology  -  402.1 Industrial and Agricultural Buildings
  DOI:10.6041/j.issn.1000-1298.2012.S0.062
  Database:Compendex

77. Accession number:20124915763418
  Title:Optimization of parameters for cotton cleaning unit of comb-type cotton picker
  Authors:Chen, Xuegeng1 ; Kang, Jianming1 
  Author affiliation:1  Mechanical Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China
  Corresponding author:Chen, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:120-124
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The method of quadratic regression general rotation was used to optimize the parameters of seed cotton cleaning apparatus. The results showed that the main factors of impacting impurity rate walking were the barbed nails drum speed, serrated roller speed and cotton brush roller speed. The three factors gradation importance was the serrated roller speed, cotton brush roller speed and barbed nails drum speed. Optimal group of parameters was the serrated roller speed of 291 r/min, the cotton brush roller speed of 695 r/min, the barbed nails drum speed of 367 r/min. In this case, the impurity was 15.10%.
  Number of references:18
  Main heading:Cotton
  Controlled terms:Brushes  -  Mathematical models  -  Optimization  -  Rollers (machine components)  -  Speed
  Uncontrolled terms:Comb-type cotton picker  -  Drum speed  -  Optimization of parameters  -  Parameter optimization  -  Quadratic regression  -  Roller speed  -  Seed cotton
  Classification code:601.2 Machine Components  -  605 Small Tools and Hardware  -  819.1 Natural Fibers  -  921 Mathematics  -  921.5 Optimization Techniques  -  931.1 Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.S0.024
  Database:Compendex

78. Accession number:20124915763407
  Title:Design and test of rice direct seeder
  Authors:Liang, Baozhong1 ; Zhao, Yongliang2 ; Zhao, Jinying2 ; Zhu, Kongxin2 
  Author affiliation:1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
                  2  Menoble Co. Ltd., Beijing 100083, China
  Corresponding author:Liang, B. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:63-66
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The designed rice seeder could perform tilling, seeding, fertilizing and covering activities simultaneously. Equal distribution of the seed was completed by the structure of roller feed and hydraulic driving system. The bothway augers could prepare for the field. It was showed that the coefficient of variation for the equal distribution was 24.5%. The coefficient of variation for the even seed consumption for every ridges was 3.2%. The seed broken ratio was 0.2%.
  Number of references:10
  Main heading:Mechanical engineering
  Controlled terms:Agricultural engineering
  Uncontrolled terms:Coefficient of variation  -  Covering  -  Design and tests  -  Direct-seeding  -  Hydraulic driving system  -  Side deep fertilizing  -  Test
  Classification code:608 Mechanical Engineering, General  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.S0.013
  Database:Compendex

80. Accession number:20124915763406
  Title:Operation parameters experiment of kettle for alfalfa seed pelleting
  Authors:Wang, Quanxi1, 2 ; Wang, Decheng1 ; Zhai, Gaixia2 ; Wang, Zhenhua2 ; Liu, Zhigang2 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
  Corresponding author:Wang, D. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:59-62 78
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to determine the optimal operation parameters, experimental study was carried out on rotate velocity and inclination angle of alfalfa seed pelleting kettle. The results showed as follows: in order to make the kettle bottom paved with alfalfa seeds, rotate speed must be increased while the inclination angle increased. When the inclination angle took a certain value, the rotate speed must be in little range to make alfalfa seed pave the kettle thoroughly. The optimal inclination angle was 36°-42°, and optimal rotate speed was 28-39 r/min.
  Number of references:10
  Main heading:Pelletizing
  Controlled terms:Optimization
  Uncontrolled terms:Alfalfa seeds  -  Experimental studies  -  Inclination angles  -  Kettle  -  Operation parameters  -  Optimal operation  -  Rotate speed
  Classification code:802.3 Chemical Operations  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.S0.012
  Database:Compendex

82. Accession number:20124915763426
  Title:International competitiveness evaluation of china agricultural equipment manufacturing industry
  Authors:Zhang, Yongsheng1 ; Ren, Hongbin2 ; Fang, Xianfa3 ; Wang, Decheng1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  China National Machinery Industry Corporation, Beijing 100080, China
                 3  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Ren, H. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:162-168
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:According to the national diamond theory of Michael Porter, choosing 5 species 15 indexes for evaluating the agricultural equipment manufacturing industry, the two-grade fuzzy comprehensive evaluation method was introduced and the international competitiveness of China, USA, Japan and Germany in Chinese market, American market and African market were analyzed respectively. It can be concluded that the industrial international competitiveness from large to small are China, Janpan, USA and Germany in Chinese market, while in American market, that are USA, Germany, Japan, China, and in African market, that are China, USA, Japan, Germany.
  Number of references:15
  Main heading:Competition
  Controlled terms:Agriculture  -  Commerce  -  Equipment
  Uncontrolled terms:Agricultural equipment  -  Chinese markets  -  Comprehensive evaluation  -  Fuzzy comprehensive evaluation method  -  International competitiveness
  Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  901 Engineering Profession  -  911.2 Industrial Economics
  DOI:10.6041/j.issn.1000-1298.2012.S0.032
  Database:Compendex

83. Accession number:20124915763444
  Title:Extraction method of shape feature for vegetables based on depth image
  Authors:Li, Changyong1 ; Cao, Qixin1  
  Author affiliation:1  Research Institute of Robotics, Shanghai Jiaotong University, Shanghai 200240, China
  Corresponding author:Cao, Q. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:242-245
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The method of shape feature extraction based on depth image for the classification of tomatoes shape was proposed. Firstly, the shape of tomatoes was separated from the background through the segmentation of image in color space. Secondly, the point cloud of tomatoes was obtained by unitizing a 3-D machine vision measuring device. In order to implement the shape feature extraction of tomatoes in the same scale, the depth values of tomatoes were normalized. The depth map of tomatoes was formed according to the result of segment and the depth information of tomato. Further the depth map was sampled in polar coordinates and the sampling data was re-plotted in Cartesian coordinates. Finally, the depth image was re-plotted in the form of the Fourier transform in the Cartesian coordinates. The generic Fourier descriptor (GFD) was calculated based on depth map. The descriptor was characterized by the invariance of transformation of translation, rotation and scaling. The GFD based on depth image and the general GFD were successively used in the experiment of tomato grading. The result showed that the mean accuracy of the former classification was up to 92% and higher than the latter.
  Number of references:12
  Main heading:Fruits
  Controlled terms:Computer vision  -  Feature extraction  -  Fourier transforms  -  Image segmentation
  Uncontrolled terms:Cartesian coordinate  -  Color space  -  Depth image  -  Depth information  -  Depth Map  -  Depth value  -  Descriptors  -  Extraction method  -  Fourier descriptors  -  Point cloud   -  Polar coordinate  -  Sampling data  -  Shape  -  Shape features  -  Tomato  -  Vision measuring
  Classification code:716 Telecommunication; Radar, Radio and Television  -  723.5 Computer Applications  -  741.1 Light/Optics  -  821.4 Agricultural Products  -  921.3 Mathematical Transformations
  DOI:10.6041/j.issn.1000-1298.2012.S0.050
  Database:Compendex

84. Accession number:20124915763427
  Title:Analysis on paddy rice production efficiency based on malmquist index
  Authors:Xu, Lijun1 ; Yang, Minli1, 2  
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  China Research Center for Agricultural Mechanization Development, China Agricultural University, Beijing 100083, China
  Corresponding author:Yang, M. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:169-174
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:With the aim to improve the production efficiency of paddy rice in double cropping area in south China, the panel data of cost and profit from 1995 to 2010 was analyzed. Total factor productivity, technical progress rate and technical efficiency was calculated and their time series characteristics were analyzed. The result showed that the total factor productivity was observed with a constant decline from 2004 to 2010, which was mainly caused by technical progress decline. The result also showed that the total factor productivity in double cropping area was much lower than that in Heilongjiang and Jiangsu Province, and there was significant variation between provinces and autonomous regions. Strengthening adaptability and advancement of paddy rice production technologies, promoting the innovation of management and mechanism, and narrowing the gap between provinces are key countermeasures to improve the capability of paddy rice production efficiency.
  Number of references:15
  Main heading:Innovation
  Controlled terms:Efficiency  -  Profitability  -  Telecommunication industry
  Uncontrolled terms:Double cropping  -  Jiangsu province  -  Malmquist indices  -  Paddy rice  -  Panel data  -  Production efficiency  -  South China  -  Technical efficiency  -  Technical progress  -  Time series characteristic   -  Total factor productivity
  Classification code:716 Telecommunication; Radar, Radio and Television  -  717 Optical Communication  -  718 Telephone Systems and Related Technologies; Line Communications  -  911.2 Industrial Economics  -  912 Industrial Engineering and Management  -  913.1 Production Engineering
  DOI:10.6041/j.issn.1000-1298.2012.S0.033
  Database:Compendex

85. Accession number:20124915763395
  Title:Simulation analysis on proportional lowering valve for high-power tractor
  Authors:Li, Mingsheng1 ; Song, Zhenghe1 ; Chi, Ruijuan1 ; Xie, Bin1 ; Mao, Enrong1 ; Liu, Yu2 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                  2  Luoyang Tractor Institute Co. Ltd., Luoyang 471000, China
  Corresponding author:Mao, E. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:1-5
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A mathematical model of proportional lowering valve was built to meet the requirement of electro-hydraulic lifter on high-power tractors. To improve the response characteristic and control accuracy of the hydraulic system, the model of the valve was established based on state space method. Then the influence on the dynamic characteristics of the valve was analyzed with respect to the parameter varieties of the components with the simulation and 4 steps Runge-Kutta method was adopted with Matlab/Simulink edited so as to obtain the optimum combination of the valve parameters. At last, the diameter of damping hole on pilot valve was 1.0 mm, the diameter of damping hole on main valve was 1.2 mm, the diameter of mainvalve larger face was 20 mm, and the diameter of pilot valve was 8 mm.
  Number of references:7
  Main heading:Tractors (agricultural)
  Controlled terms:Damping  -  Hydraulic equipment  -  Mathematical models  -  Runge Kutta methods  -  State space methods  -  Tractors (truck)
  Uncontrolled terms:Control accuracy  -  Dynamic characteristics  -  Electro-hydraulics  -  Hydraulic system  -  Main valve  -  MATLAB /simulink  -  Optimum combination  -  Response characteristic  -  Simulation  -  Simulation analysis
  Classification code:632.2 Hydraulic Equipment and Machinery  -  663.1 Heavy Duty Motor Vehicles  -  921 Mathematics  -  921.6 Numerical Methods  -  931.1 Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.S0.001
  Database:Compendex

86. Accession number:20124915763428
  Title:Analysis of influencing factors on farmers' adoption of maize mechanized harvesting in Jilin province
  Authors:Gao, Wei1 ; Chen, Zhi2 ; Huang, Yuxiang3, 4 ; Yang, Minli1, 4  
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  China National Machinery Industry Corporation, Beijing 100080, China
                 3  College of Mechanical and Electronic Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
                 4  China Research Center for Agricultural Mechanization Development, China Agricultural University, Beijing 100083, China
  Corresponding author:Yang, M. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:175-179 168
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:By using survey data from 186 rural farmers in Jilin Province, the influencing factors on farmers' adoption of maize mechanized harvesting was analyzed by using Logistic model. The results show that gender, technological training, scale of planting, proportion of non-agricultural income, perceived effectiveness, cooperative association membership, the support from the government policies and demonstration projects are positively and significantly correlated with the adoption of maize mechanized harvesting, whereas serious natural disasters plays significant negative effect on it. The policy proposal recommended is enhancement of technological training, acceleration of land integration and circulation, promotion of rural labor transfer, strengthening against disaster ability, as well as governmental supportive policy contributing to acceleration of the spread of corn producing entire mechanization and adoption of maize mechanized harvesting.
  Number of references:15
  Main heading:Factor analysis
  Controlled terms:Agriculture  -  Machinery  -  Technical presentations
  Uncontrolled terms:Association memberships  -  Demonstration project  -  Farmer  -  Influencing factors  -  Jilin Province  -  Logistic models  -  Mechanized harvesting  -  Natural disasters  -  Rural labors  -  Survey data
  Classification code:601 Mechanical Design  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  903.2 Information Dissemination  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.S0.034
  Database:Compendex

89. Accession number:20124915763435
  Title:Development of conveyable beef-marbling detection system
  Authors:Guo, Hui1, 2 ; Peng, Yankun1 ; Jiang, Fachao1 ; Yang, Weilong1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  College of Mechanical and Traffic, Xinjiang Agricultural University, Urumqi 830052, China
  Corresponding author:Peng, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:207-210
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The beef-marbling detecting system combined with spectral and computer vision technology was created. Working principle, hardware structure, choice of hardware parameters and the software of the detecting system ware introduced. Center wavelength of the filter used in this detecting system was 530 nm, and the image of sample under this wavelength was taken by an industrial camera. Image processing software used to detect beef-marbling was developed. The results of experiment show that detect accuracy of the system can match the demand of beef-marbling detect.
  Number of references:12
  Main heading:Meats
  Controlled terms:Beef  -  Computer vision  -  Hardware  -  Image processing
  Uncontrolled terms:Center wavelength  -  Computer vision technology  -  Detecting systems  -  Detection device  -  Detection system  -  Hardware parameters  -  Hardware structures  -  Image-processing software  -  Marbling  -  Working principles
  Classification code:605 Small Tools and Hardware  -  741 Light, Optics and Optical Devices  -  741.2 Vision  -  822.3 Food Products
  DOI:10.6041/j.issn.1000-1298.2012.S0.041
  Database:Compendex

90. Accession number:20124915763464
  Title:Bionic helical fiber preparation and mechanical performance testing
  Authors:Shen, Shenglong1 ; Lin, Fudong1 ; Yan, Zhifeng1 ; Tang, Zuoben1 ; Sun, Junjie1 ; Ma, Yunhai1  
  Author affiliation:1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
  Corresponding author:Ma, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:344-347
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Bionic structure of jute fiber was designed. The mechanical properties of jute fiber with bionic structure were tested. First, jute fiber was divided into filaments. The surface treatment was used on jute fiber filaments: three shares of jute fiber were woven into a different helix angles bionic helical structure by using the spiral knitting machine and stereotypes. The size of the helix angle could be controlled by adjusting the speed of the spiral knitting machine. Its mechanical properties were tested. Results showed that, the breaking load of jute fiber which had bionic helical structure first increased and then decreased. Spiral fiber elongation was declined with the decrease of helix angle. Jute fiber with bionic helical structure had optimum comprehensive mechanical properties at the helix angle of 66°. When the helix angle was more than 66°, the stress of the fiber was unbalance, and then the fiber was fractured. When the helix angle is less than 66°, the fiber force increased with the decreasing of helix angle's.
  Number of references:6
  Main heading:Fibers
  Controlled terms:Bionics  -  Jute fibers  -  Knitting machinery  -  Mechanical properties  -  Structural optimization
  Uncontrolled terms:Breaking load  -  Fiber elongation  -  Fiber preparation  -  Helical structures  -  Helix angles  -  Knitting machines  -  Mechanical performance  -  Preparation
  Classification code:951 Materials Science  -  921.5 Optimization Techniques  -  819.6 Textile Mills, Machinery and Equipment  -  819.1 Natural Fibers  -  817 Plastics and Other Polymers: Products and Applications  -  812 Ceramics, Refractories and Glass  -  731.1 Control Systems
  DOI:10.6041/j.issn.1000-1298.2012.S0.070
  Database:Compendex

91. Accession number:20124915763452
  Title:Performance of portable soil TN detector based on NIR spectroscopy
  Authors:An, Xiaofei1 ; Li, Minzan1 ; Zheng, Lihua1 ; Liu, Yumeng1 ; Zhang, Yajing2 
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Li, M. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:283-288
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to detect soil total nitrogen (TN) content, a portable soil TN detector was developed. The stability, accuracy and precision of the detector were tested with the sixty soil samples collected from Shangzhuang Experiment Station of China Agricultural University. The models were evaluated by the correlation coefficient of calibration (RC), the correlation coefficient of validation (RV), root mean square error of calibration (RMSEC), root mean square error of prediction (RMSEP) and residual prediction deviation (RPD). The results showed that the repeatability error of 940 nm, 1050 nm, 1100 nm, 1200 nm, 1300 nm, 1450 nm and 1550 nm were 1.57%, 1.80%, 1.59%, 0.94%, 0.61%, 0.64% and 3.13%, respectively. The correlation coefficients between the absorbance of soil TN detector and that of MATRIX_I Fourier spectral analyzer were 0.971, 0.948, 0.928, 0.873, 0.920, 0.901 and 0.913, respectively. The RC, RV, RMSEC, RMSEP and RPD of the model established by BP neural network was 0.81, 0.80, 0.029, 0.019 and 3.44, respectively. The experiment indicated that the portable soil TN detector performed well.
  Number of references:22
  Main heading:Soils
  Controlled terms:C (programming language)  -  Calibration  -  Detectors  -  Experiments  -  Mean square error  -  Near infrared spectroscopy  -  Neural networks  -  Spectrum analyzers
  Uncontrolled terms:1550 nm  -  Absorbances  -  Accuracy and precision  -  BP neural networks  -  Correlation coefficient  -  Fourier  -  Near infrared reflectance spectroscopy  -  NIR spectroscopy  -  Root mean square error of calibrations  -  Root-mean-square error of predictions   -  Soil sample  -  Soil sensors  -  Soil total nitrogen  -  Total nitrogen
  Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  914 Safety Engineering  -  901.3 Engineering Research  -  801 Chemistry  -  731.1 Control Systems  -  723.4 Artificial Intelligence  -  723.1.1 Computer Programming Languages  -  483.1 Soils and Soil Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.S0.058
  Database:Compendex

92. Accession number:20124915763455
  Title:Rapid determination model of apple leaf nitrogen content
  Authors:Zhang, Yao1 ; Zheng, Lihua1 ; Li, Minzan1 ; Deng, Xiaolei1 
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
  Corresponding author:Zheng, L. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:300-304
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The visible and near infrared spectral reflectance was measured for the leaves by using Shimadzu UV-2450 spectrograph. At the same time, the nitrogen content of apple tree leaves were measured in Kjeldahl nitrogen method. The rapid determination model of apple leaf nitrogen content suitable for portable detector was built. The spectral properties were explored and the analysis of correlation was conducted among the nitrogen content of apple tree leaves and their spectral reflectance. Then two sensitive wavebands (652 nm, 772 nm) were obtained. At the same time, by adopting the method of segment reduced precise sampling, the detailed NDVI within the range of 350-730 nm and 740-880 nm were constructed, and then the wavebands (859 nm, 364 nm) of the highest correlation with nitrogen content were selected to construct NDVI for apple tree. Finally the nitrogen partial least square regression model of apple tree leaves was established based on apple tree NDVI (859 nm, 364 nm) and reflectance at 652 nm and 772 nm. The R2 of the calibration model reached to 0.904 8, RMSEC was 0.1597, and the R2 of predicted model reached to 0.917, RMSEP was 0.2833. The model reaches practical level and can be used as the nitrogen content rapid determination model to develop a portable apple tree nutrition detector.
  Number of references:15
  Main heading:Fruits
  Controlled terms:Forestry  -  Nitrogen  -  Reflection
  Uncontrolled terms:Apple leaf  -  Apple trees  -  Calibration model  -  HyperSpectral  -  Kjeldahl  -  Leaf nitrogen content  -  Nitrogen content  -  Partial least square regression  -  Rapid determination  -  Shimadzu   -  Spectral properties  -  Spectral reflectances  -  Vegetation index  -  Visible and near infrared  -  Wavebands
  Classification code:711 Electromagnetic Waves  -  804 Chemical Products Generally  -  821.0 Woodlands and Forestry  -  821.4 Agricultural Products
  DOI:10.6041/j.issn.1000-1298.2012.S0.061
  Database:Compendex

93. Accession number:20124915763408
  Title:Effect of air-assisted spraying condition parameters on boom spray drift characteristics
  Authors:Liu, Xuemei1, 2 ; Yuan, Jin1, 2 ; Zhang, Xiaohui1, 2 ; Zuo, Wenlong1 
  Author affiliation:1  Mechanical and ElectronicEngineering College, Shandong Agricultural University, Taian 271018, China
                 2  Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271018, China
  Corresponding author:Zhang, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:67-72
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A 3-D multiphase computational fluid dynamics model was used to study the coupling interaction of the natural wind, the air curtain and discrete droplets in the boom sprayer application and analyze the characteristics of air-assisted spray condition parameters on the boom spraying drift. The analytic results showed that increased outlet velocity of the air-assisted flow stressed droplet movement to target and then decreased the droplet deposition rate. Small nozzle flow rate implicated obvious loss trend of droplet drift. However, when the nozzle flow was excessive, the anti-drift loss of capacity of droplets decreased significantly. Air-assisted blowing angle had no significant impact on the drift reduction.
  Number of references:19
  Main heading:Spray nozzles
  Controlled terms:Agricultural machinery  -  Air  -  Computational fluid dynamics  -  Drops  -  Three dimensional computer graphics
  Uncontrolled terms:Air-assisted spraying  -  Blowing angle  -  Boom sprayer  -  Computational fluid dynamics models  -  Condition parameters  -  Coupling interaction  -  Discrete droplets  -  Drift reducing  -  Drift reduction  -  Droplet deposition   -  Droplet movement  -  Loss-of-capacity  -  Natural wind  -  Nozzle flow  -  Outlet velocities  -  Significant impacts  -  Spray conditions  -  Spray drift
  Classification code:443.1 Atmospheric Properties  -  631 Fluid Flow  -  723.5 Computer Applications  -  804 Chemical Products Generally  -  821.1 Agricultural Machinery and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.S0.014
  Database:Compendex

94. Accession number:20124915763416
  Title:Flexible body simulation for corn stem based on ANSYS and ADAMS
  Authors:Cui, Tao1 ; Liu, Jia1 ; Zhang, Dongxing1 ; Shi, Song1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Zhang, D. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:112-115
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The establishment of flexible corn model is a key process of the corn-harvest mechanism, which is a kind of rigid-flexible coupling multi-body system. A modal neutral file for ADAMS was created in ANSYS by meshing the stem model and defining the attach point. The model of harvest mechanism and the modal neutral file of corn stem were imported into ADAMS. The status of motion of stem was simulated by applying load, constraints, and drive. And from the simulation, the variation of location and velocity were obtained. The status of motion in the mechanism was studied.
  Number of references:11
  Main heading:Flexible couplings
  Controlled terms:Agricultural engineering  -  Mechanical engineering
  Uncontrolled terms:Corn stem  -  Flexible bodies  -  Key process  -  Multi Body Systems  -  Neutral files  -  Rigid flexible coupling  -  Simulation
  Classification code:602.2 Mechanical Transmissions  -  608 Mechanical Engineering, General  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.S0.022
  Database:Compendex

96. Accession number:20124915763417
  Title:Experiment on motion law of being cutted maize stalk
  Authors:Wei, Yuanzhen1 ; Li, Qiyun1 ; Cao, Shuhong1 ; Zhang, Daolin1 ; Zhang, Guohai1 ; Zhang, Liangliang2 
  Author affiliation:1  School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
                 2  Beijing Sany Heavy Machinery Co. Ltd., Beijing 102206, China
  Corresponding author:Li, Q. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:116-119 145
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Various influence factors on chopping yield of maize stalk were analyzed and the conditions of better levels of influence factors were discovered, which were as follows: feeding distance position near fixed blades side, forward speed of 0.6-0.8 m/s, rotational speed of cutter head of 1576 r/min. Under the conditions of better levels of each influencing factor of maize stalk chopping effect, by using high speed photography and vast experiments, three motion laws were reached, which were through the below stages, instant of contacting with cutter head, process of chopping and after chopping.
  Number of references:12
  Main heading:Experiments
  Controlled terms:High speed photography
  Uncontrolled terms:Chopping and returning  -  Corn stalk  -  Feeding distances  -  Forward speed  -  Maize stalk  -  Motion law  -  Rotational speed
  Classification code:742.1 Photography  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.S0.023
  Database:Compendex

97. Accession number:20124915763432
  Title:Performance experiments of miscible oil fueled with biomass tar and diesel for agricultural diesel engine
  Authors:Zhang, Huan1 ; Liu, Shengyong1 ; Hu, Jianjun1 ; Jiao, Youzhou1 ; Zhang, Quanguo1 ; Guo, Qianhui1 
  Author affiliation:1  Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China
  Corresponding author:Liu, S. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:194-197 189
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:New materials and equipment according to the combustible fraction of diesel miscible flammable characteristics of biomass tar was analyzed. Diesel engine fueled with different proportions of combustible biomass tar distillates and diesel miscible oil power performance was proposed. Experimental results showed that biomass tar combustible miscible distillate and diesel oil had good power and economy. When the power of agricultural diesel was low, the consumption of miscible oil sample was less than diesel. When the power of agricultural diesel was high, the consumption of miscible oil was less than diesel with the replacement ratio of 10% in diesel, but higher than diesel with replacement ratio of 20%. The maximum power of agricultural diesel engine with miscible oil was higher than the rated power of the agricultural diesel engines which met the power requirements of agricultural diesel engines.
  Number of references:8
  Main heading:Diesel engines
  Controlled terms:Agriculture  -  Biomass  -  Diesel fuels  -  Experiments  -  Flammable materials  -  Tar
  Uncontrolled terms:Biomass tar  -  Diesel  -  Diesel oil  -  Maximum power  -  Miscible oil  -  Performance experiment  -  Power performance  -  Power requirement  -  Replacement ratio
  Classification code:901.3 Engineering Research  -  821.5 Agricultural Wastes  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  804 Chemical Products Generally  -  612.2 Diesel Engines  -  524 Solid Fuels  -  521.4 Flame Research  -  513 Petroleum Refining  -  411 Bituminous Materials
  DOI:10.6041/j.issn.1000-1298.2012.S0.038
  Database:Compendex

98. Accession number:20124915763443
  Title:Effect of microwave radiation on life activity of agricultural products
  Authors:Kong, Xiaoling1 ; Zhou, Jie1 ; Yu, Peng1 ; Chen, Yan1 ; Wang, Liwei1 
  Author affiliation:1  School of Engineering, Anhui Agricultural University, Hefei 230036, China
  Corresponding author:Kong, X. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:239-241 261
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The ripening color and growth cultured germination of chestnuts after microwave processing was observed to analyze microwave radiation damage to materials. Short time and high-power processing will reduce the ripening degree of the chestnut, but whether chestnut life activity or rice life activity in the microwave would be affected. Rice germination rate is only 0-8% after microwave treatment if 10% of the rice water is removed, so special attention to the impact on the life activity is necessary in the processing of microwave materials like seeds.
  Number of references:11
  Main heading:Microwaves
  Controlled terms:Agricultural products  -  Cultivation  -  Fruits  -  Growth (materials)  -  Radiation damage  -  Seed
  Uncontrolled terms:Germination rates  -  Microwave materials  -  Microwave processing  -  Microwave treatment
  Classification code:622.2 Radiation Effects  -  711 Electromagnetic Waves  -  821.3 Agricultural Methods  -  821.4 Agricultural Products  -  951 Materials Science
  DOI:10.6041/j.issn.1000-1298.2012.S0.049
  Database:Compendex

99. Accession number:20124915763401
  Title:Kinematic analysis and experiment of dibble-type planting devices
  Authors:Cui, Wei1, 2 ; Zhao, Liang2 ; Song, Jiannong1 ; Lin, Jintian2 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  State Key Laboratory of Soil-Plant-Machine System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Song, J. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:35-38 34
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Based on the movement trajectory formula of dibble-type planting device, the zero-velocity planting and the least damage of mulch-film was analyzed. The main parameters for transplanter were discussed. The proposed machine was designed and the experiment was carried out. The analysis and experiment showed that it's better to plant seedlings during rising stage of the planting devices. Spacing can be changed by changing the transmission ratio or the number of planting devices.
  Number of references:11
  Main heading:Seed
  Controlled terms:Design  -  Experiments  -  Kinematics
  Uncontrolled terms:Dibble-type planting device  -  Kinematic Analysis  -  Main parameters  -  Movement trajectories  -  Transmission ratios
  Classification code:408 Structural Design  -  821.4 Agricultural Products  -  901.3 Engineering Research  -  931.1 Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.S0.007
  Database:Compendex

100. Accession number:20124915763405
  Title:Orthogonal experiment optimization on air-suction precision seed-metering device
  Authors:Wang, Yanyao1 ; Li, Jiandong2 ; Wang, Dongwei1 ; Sun, Qingwei1 ; Yang, Wei2 
  Author affiliation:1  School of Electrical and Mechanical Engineering, Qingdao Agricultural University, Qingdao 266109, China
                 2  Menoble Co. Ltd., Beijing 100083, China
  Corresponding author:Wang, Y. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:54-58 89
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The design of quadratic regression orthogonal rotating experiment was used to test the performance of air-suction precision seed-metering device on the type JPS-12 seed metering performance testing bench. The seeding qualified index was 72.31%-98.17%. The leaking index was 0.51%-18.7%. The regression equation was received by regression analysis of the test results. 3-D figures were drawn with Matlab. Various effects on the experimental indexes by each factor could be received. The experimental factors were optimized, and then the best combination was achieved. When the relative pressure was -2.86 kPa, the hole diameter was 5.2 mm and the speed of seed tray was 21 r/min, the seeding qualified index was 91.03% and the leaking seed index was 2.98%.
  Number of references:10
  Main heading:Pneumatic materials handling equipment
  Controlled terms:Experiments  -  Optimization  -  Regression analysis
  Uncontrolled terms:Experimental factors  -  Hole diameter  -  Orthogonal experiment  -  Performance testing  -  Quadratic regression  -  Regression equation  -  Seed metering  -  Seed trays  -  Seed-metering device
  Classification code:691.1 Materials Handling Equipment  -  901.3 Engineering Research  -  921.5 Optimization Techniques  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.S0.011
  Database:Compendex

102. Accession number:20124915763436
  Title:Selection of NIR efficient regions for total soluble solids of Bamfild navel orange
  Authors:Lü, Qiang1 ; He, Shaolan1 ; Liu, Bin2 ; Tian, Xi1 ; Yi, Shilai1 ; Deng, Lie1  
  Author affiliation:1  Citrus Research Institute, Chinese Academy of Agricultural Sciences, Chongqing 400712, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Deng, L. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:211-214
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to explore a nondestructive approach to predict total soluble solids (TSS) of Bamfild navel orange, multiplicative scatter correction (MSC) was used to preprocess the NIR spectra (1000-2500 nm) of navel orange. Partial least square (PLS), interval partial least square (iPLS) and synergy interval partial least square (siPLS) methods were employed to establish the calibration models of TSS. The results showed that siPLS model was obtained with 17 intervals and the optimal combinations of intervals selected were No. 4(1267-1355 nm), No. 5(1356-1443 nm), No. 9(1708-1795 nm) and No. 15(2236-2323 nm). The coefficient of determination r was 0.9109 and RMSECV was 0.3312 in calibration set, and r was 0.8789 and RMSEP was 0.4487 in prediction set. It was achieved with six factors. This work demonstrated that NIR spectroscopy with siPLS model could not only select the efficient regions for TSS of orange and simplify the model, but also improve precision.
  Number of references:13
  Main heading:Infrared devices
  Controlled terms:Calibration  -  Near infrared spectroscopy
  Uncontrolled terms:Interval partial least squares  -  Navel orange  -  NIR spectroscopy  -  Spectral region  -  Total soluble solids
  Classification code:741.3 Optical Devices and Systems  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
  DOI:10.6041/j.issn.1000-1298.2012.S0.042
  Database:Compendex

104. Accession number:20124915763396
  Title:Fuzzy control algorithm simulation of automatic control of tilling depth for tractor based on slip rate
  Authors:Bai, Xuefeng1 ; Lu, Zhixiong1 ; Chang, Jiangxue1 ; Li, He1 ; Zhou, Weiwei1 
  Author affiliation:1  Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Lu, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:6-10
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The automatic fuzzy algorithm for controlling tilling depth of tractor based on slip rate was simulated. Firstly, the mathematical of the system was built and simulated by using Matlab/Simulink. Secondly, the fuzzy controller was designed. Further simulated analysis of the proposed model was carried out. At the same time, PID controller and fuzzy-PID controller were also designed and simulated. And then, these three controllers performance was compared, including responsiveness, adaptability, and anti-interference performance. As a result, fuzzy-PID and fuzzy controller was more suitable for this system, but fuzzy-PID needed more variables and seemed more complex.
  Number of references:10
  Main heading:Computer simulation
  Controlled terms:Algorithms  -  Automation  -  Control  -  Fuzzy control  -  Fuzzy sets  -  Process control  -  Three term control systems  -  Tractors (agricultural)  -  Tractors (truck)
  Uncontrolled terms:Anti-interference  -  Fuzzy algorithms  -  Fuzzy controllers  -  Fuzzy PID controller  -  Fuzzy-PID  -  PID controllers  -  Simulated analysis  -  Simulation  -  Slip rates
  Classification code:663.1 Heavy Duty Motor Vehicles  -  723.5 Computer Applications  -  731 Automatic Control Principles and Applications  -  731.1 Control Systems  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.S0.002
  Database:Compendex

107. Accession number:20124915763459
  Title:Virtual assembly for mechanical gearbox of agricultural chassis
  Authors:Li, Shanshan1 ; Song, Zhenghe1 ; Chen, Yueyang1 ; Mao, Enrong1 ; Zhu, Zhongxiang1 ; Chen, Li1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Zhu, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:318-322
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The virtual assembly model of mechanical gearbox was researched and its virtual assembly process was realized. By analyzing the information of the virtual assembly object and the relationship between the assembly objects, the virtual assembly model was divided into the object model describing inherent information and dynamic information in the assembly parts, the assembly tree model describing assembly-level information of assembly members, and the relational model describing the parts assembly constraints between the assembly parts. The assembly model information was obtained by the conversion of model data between CAD system and virtual assembly system. Then the assembly model was developed in the virtual assembly system and the implementation of the motion constraints in the virtual assembly process was proposed. By analyzing the DOF based on the space position and geometric constraints, the motion constraints were determined. Using EON and its secondary development tool, the virtual assembly module was built, and then the virtual assembly process of mechanical gearbox was implemented.
  Number of references:7
  Main heading:Computer aided design
  Controlled terms:Agricultural machinery  -  Assembly  -  Data handling
  Uncontrolled terms:Assembly constraints  -  Assembly model  -  CAD system  -  Dynamic information  -  Gearbox  -  Geometric constraint  -  Model data  -  Motion constraints  -  Object model  -  Relational Model   -  Secondary development  -  Tree models  -  Virtual assembly  -  Virtual assembly model  -  Virtual assembly systems
  Classification code:723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  821.1 Agricultural Machinery and Equipment  -  913.1 Production Engineering
  DOI:10.6041/j.issn.1000-1298.2012.S0.065
  Database:Compendex

108. Accession number:20124915763422
  Title:Experiment of peeling and cutting characteristics for sugarcane
  Authors:Wan, Peng1 ; Zhao, Weisong1 ; Long, Chao1 ; Jian, Zaiqing1 
  Author affiliation:1  College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:Wan, P. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:141-145
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The green-skinned sugarcane from Xiantao city in Hubei province was used as the test material. The peeling and cutting characteristics in the internode and node of the green-skinned sugarcane on the computer control electronic universal testing machine was studied with the home-made blade of 15° angle and the fixture. The test results showed that, when peeling the internode part of the sugarcane stalk, the blade load first increased and then decreased. When peeling the node part of the sugarcane stalk, the blade load first increased and then decreased, but it soon increased again and decreased after. When cutting off the internode and node parts of the sugarcane stalk, blade load showed an increasing trend.
  Number of references:16
  Main heading:Mechanical engineering
  Controlled terms:Agricultural engineering  -  Cutting  -  Peeling  -  Sugar cane
  Uncontrolled terms:Control electronics  -  Cutting characteristics  -  Cutting-off  -  Hubei Province  -  Machine characteristics  -  Test materials  -  Universal testing machines
  Classification code:604.1 Metal Cutting  -  608 Mechanical Engineering, General  -  818.5 Rubber Products  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.4 Agricultural Products
  DOI:10.6041/j.issn.1000-1298.2012.S0.028
  Database:Compendex

109. Accession number:20124915763451
  Title:Development of soil available macronutrients detection system based on ion-selective electrodes array
  Authors:Zhang, Miao1 ; Sheng, Mingya1 ; Zhang, Linan1 ; Li, Li1 ; Zhang, Yajing2 
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Li, L. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:277-282
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to decrease the cost and improve the testing efficiency, a four channel detection system for soil macronutrients rapid determination was developed and evaluated. The system was mainly composed of an ion-selective electrodes (ISEs) array, a laptop computer, a microchip and the signal conditioning circuit. As a sensing unit, the ISEs array was integrated with a pH electrode, a nitrate ISE, potassium ISE and a phosphate ISE. According to the testing results, the input impedance of each channel was around 1012 Ω, and the input current was about 1 pA. The detection range was between -2000 - 2000 mV, which indicated the good compatibility with the majority of ion-selective electrodes. According to the validation results, the testing accuracy and detection range of soil pH value, nitrate-nitrogen and potassium could meet the needs of site-specific fertilization.
  Number of references:17
  Main heading:Soil testing
  Controlled terms:Chemical sensors  -  Ion selective electrodes  -  Laptop computers  -  Potassium  -  Signal conditioning circuits  -  Soils
  Uncontrolled terms:Detection range  -  Detection system  -  Four-channel  -  Good compatibility  -  Input current  -  Input impedance  -  Ion-selective electrodes array  -  Nitrate nitrogen  -  pH Electrode  -  Rapid determination   -  Sensing unit  -  Site-specific  -  Soil pH  -  Testing accuracy  -  Testing efficiency  -  Testing results  -  Validation results
  Classification code:483.1 Soils and Soil Mechanics  -  549.1 Alkali Metals  -  722.4 Digital Computers and Systems  -  801 Chemistry  -  801.4.1 Electrochemistry
  DOI:10.6041/j.issn.1000-1298.2012.S0.057
  Database:Compendex

110. Accession number:20124915763403
  Title:Development of working status monitoring device for automatic fertigation system
  Authors:Yao, Zhouhua1 ; Wei, Xinhua1 ; Zuo, Zhiyu1 ; Zou, Sheng1 ; Mao, Hanping1  
  Author affiliation:1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Mao, H. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:44-47
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:According to requirement of stability on working status for the automatic fertigation system, the monitoring devices and monitoring methods of water supply status, fertilizer suction status, nutrient mix status and irrigation/fertilization status were designed. Intelligent controller controlled automatic fertigation systems based on the monitoring results of working status of all aspects. At last the prototype was trial-manufactured. The performance of the prototype was tested. The test results showed that the working status of automatic fertigation system was stable, and the system could satisfy the requirements of irrigation and fertilizer proportion in greenhouse. The problem of monitoring working status of automatic fertigation system was solved.
  Number of references:10
  Main heading:Monitoring
  Controlled terms:Fertilizers  -  Irrigation  -  Water supply
  Uncontrolled terms:Fertigations  -  Fertilization  -  Intelligent controllers  -  Monitoring device  -  Monitoring methods
  Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  821.3 Agricultural Methods  -  804 Chemical Products Generally  -  446.1 Water Supply Systems
  DOI:10.6041/j.issn.1000-1298.2012.S0.009
  Database:Compendex

111. Accession number:20124915763414
  Title:Simulation of divider and snapping roll for small-scale corn harvester
  Authors:Du, Yuefeng1 ; Zhu, Zhongxiang1 ; Song, Zhenghe1 ; Mao, Enrong1 ; Li, Fuqiang1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Zhu, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:100-105
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The performance simulation of a small-scale corn harvester's divider and snapping roll for hilly area was analyzed by using ADAMS. A 3-D model of the corn harvester header was established with Pro/E. The preprocessed model was imported into the ADAMS environment to build the virtual prototype model. A performance simulation of divider and snapping roll was done. The results showed that the design of the divider shape had some defects, which lead to the result that the cornstalks cannot be normally fed. Meanwhile, it gave the best values of speed and inclination of the snapping rolls, the optimal parameters were: snapping roll speed of 800-1000 r/min, and snapping roll inclination of 30°.
  Number of references:7
  Main heading:Harvesters
  Controlled terms:Rolls (machine components)
  Uncontrolled terms:3D models  -  Best value  -  Corn harvesters  -  Divider  -  Hilly areas  -  Optimal parameter  -  Performance simulation  -  Roll speed  -  Small-scale corn harvesters  -  Snapping roll   -  Virtual prototype
  Classification code:601.2 Machine Components  -  821.1 Agricultural Machinery and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.S0.020
  Database:Compendex

113. Accession number:20124915763438
  Title:Design of double cross-flow drying test bed
  Authors:Du, Zhilong1 ; Zhao, Cunyang1 ; Ye, Jinpeng1 ; Wang, Jichun1 ; Sun, Shan1 
  Author affiliation:1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Du, Z. ([email protected]) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:SUPPL.1
  Issue date:October 2012
  Publication year:2012
  Pages:218-221 230
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:According to the principles and characteristics of drying and cross-flow belt drying machine, the double cross-flow drying test bed was designed. The test bed mainly consists of the upper circulatory system and the lower circulatory system, and every system can be operated independently with cross-flow wind speed of 0-10 m/s, temperature range of 30-150°C, humidity range of 0-100%, maximum thickness of 600 mm etc. The system can achieve automatic moisture exhaust, the show of energy consumption, all parameters display and record function etc. By the drying experiment of red peppers in the test bed, the effects of pre-drying temperature, post-drying temperature, thickness of red peppers on the impact of energy consumption were investigated. Furthermore the dry parameters of minimum consumption were obtained, at pre-drying temperature 70°C (20 min dried) 60°C (40 min dried), post-drying temperature 55°C, thickness of red peppers 14 cm.
  Number of references:12
  Main heading:Drying
  Controlled terms:Cardiovascular system  -  Design  -  Energy utilization  -  Equipment testing
  Uncontrolled terms:Circulatory systems  -  Cross flows  -  Drying machines  -  Drying tests  -  Pre-drying  -  Red peppers  -  Temperature range  -  Wind speed
  Classification code:943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  642.1 Process Heating  -  461.2 Biological Materials and Tissue Engineering  -  408 Structural Design  -  525.3 Energy Utilization
  DOI:10.6041/j.issn.1000-1298.2012.S0.044
  Database:Compendex