2012年第43卷第8期共收錄42篇
1. Accession number:20123815454292
Title:Product configuration and variant design's scope definition algorithm based on customers' performance satisfaction
Authors:Fan, Zhijun1 ; Jiang, Zhaoliang1 ; Li, Zhi1
Author affiliation:1 School of Mechanical Engineering, Shandong University, Ji'nan 250061, China
Corresponding author:Jiang, 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:8
Issue date:August 2012
Publication year:2012
Pages:198-204
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 concept of dividing point between configuration and variant design was proposed firstly. An optimization objective function was constructed by combining product performance and the customer satisfaction. A judging method was designed with a performance index for checking the dividing point and performance similarity for finding the parts of required variant design. Then, with the objectives of optimal product performance, a multi-objective optimization algorithm was designed based on genetic algorithm, and the process of checking the dividing point was also specified. In the end, the proposed genetic algorithm was verified by an example. The results showed that the proposed approach could solve this problem efficiency.
Number of references:15
Main heading:Product design
Controlled terms:Customer satisfaction - Genetic algorithms - Multiobjective optimization
Uncontrolled terms:Customers satisfaction - Judging methods - Multi objective optimizations (MOO) - Optimization objective function - Performance indices - Product configuration - Product performance - Variant design
Classification code:723 Computer Software, Data Handling and Applications - 912 Industrial Engineering and Management - 913.1 Production Engineering - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.08.036
Database:Compendex
2. Accession number:20123815454268
Title:Finite element analysis and experiment of soil resistance of multiplex-modality subsoiler
Authors:Zhang, Qiang1 ; Zhang, Lu1 ; Yu, Haiye1 ; Xiao, Yingkui1
Author affiliation:1 College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Corresponding author:Yu, 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:8
Issue date:August 2012
Publication year:2012
Pages:61-65
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 general explicit nonlinear finite element program ANSYS/LS-DYNA was used as a tool to research the influence of tillage depth and operating speed on operating resistance of the multiplex-modality subsoiler, as well as to study the significance of operating resistance reduction of the multiplex-modality subsoiler compared with the standard arc-shape subsoiler. In order to prove the reliability of the finite element analysis method, the operating resistance of the multiplex-modality subsoiler and the standard arc-shape subsoiler was tested in a soil bin. The result showed that there was a same varying trend between the operating resistance data obtained by the finite element method and soil bin test, and the finite element method was suitable to the research of the performance of subsoiling. With the fixing operating speed of 4-5km/h, average operating resistance of the multiplex-modality subsoiler reduced by 44.07%, 43.71% and 33.83% than of the standard arc-shape subsoiler, based on tillage depth of 300 mm, 350 mm and 400 mm, respectively. All these data proved that the multiplex-modality subsoiler had a significant effect on operating resistance reduction.
Number of references:12
Main heading:Multiplexing
Controlled terms:Agricultural machinery - Agriculture - Experiments - Finite element method - Soils
Uncontrolled terms:Finite Element - Finite element analysis method - Nonlinear finite element program - Operating speed - Resistance reduction - Subsoiler
Classification code:901.3 Engineering Research - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 921.6 Numerical Methods - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 483.1 Soils and Soil Mechanics - 717 Optical Communication
DOI:10.6041/j.issn.1000-1298.2012.08.012
Database:Compendex
3. Accession number:20123815454284
Title:Effect of amylolytic degree on characteristics of spray dried oat powder
Authors:Shi, Junling1 ; Li, Ju'nan1 ; Chen, Qiugui2 ; Li, Lu2 ; Hu, Xinzhong1
Author affiliation:1 College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
2 Seamild Enterprise Group, Guilin 541004, China
Corresponding author:Shi, 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:8
Issue date:August 2012
Publication year:2012
Pages:155-159
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:Oat was digested into different DE values by using amylase and spray-dried to powder. The powder was evaluated in properties of packing density, repose angle, caking rate and sensory evaluation. The results showed that the powder with DE values rates above 36.2 had good dissolubility and taste, but less viscosity. At last, DE values of 35-38 was supposed as the suitable amylolytic degree for obtaining the best overall quality of spray-dried oat powder.
Number of references:10
Main heading:Spray drying
Controlled terms:Amylases - Powders
Uncontrolled terms:DE value - Oat - Overall quality - Packing density - Sensory evaluation
Classification code:536 Powder Metallurgy - 804 Chemical Products Generally - 804.1 Organic Compounds - 822.2 Food Processing Operations
DOI:10.6041/j.issn.1000-1298.2012.08.028
Database:Compendex
4. Accession number:20123815454265
Title:Design and experiment of cultivator for high straw returning in paddy field
Authors:Zhou, Yong1 ; Yu, Shuisheng1 ; Xia, Junfang1
Author affiliation:1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Xia, 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:8
Issue date:August 2012
Publication year:2012
Pages:46-49 77
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 cultivator which can achieve the purpose of high straw returning by rotary tillage with double roller was designed. The overall structural design and working principle of the cultivator were introduced. The field tests were conducted in order to examine its operating performance. The results of field tests indicated that the cultivator could realize multiple functions at the same time, such as the high straw mulching and returning, soil crashing, and surface leveling. The working qualities of cultivator which met the agrotechnical requirement of rice sowing and transplanting were as follows: the tillage depth of 158.7 mm, the stability of tillage depth of 84.86%, the straw coverage rate of 94.19%, the surface roughness after rotary tillage of 25 mm, and the productivity of 0.87 hm2/h.
Number of references:14
Main heading:Agricultural machinery
Controlled terms:Cultivation - Design - Experiments - Structural design - Surface roughness
Uncontrolled terms:Coverage rate - Cultivator - Field test - Multiple function - Operating performance - Paddy fields - Straw mulching - Working principles - Working quality
Classification code:408 Structural Design - 408.1 Structural Design, General - 821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods - 901.3 Engineering Research - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.6041/j.issn.1000-1298.2012.08.009
Database:Compendex
5. Accession number:20123815454273
Title:Design and experiment of two sections spiral sugarcane lifter for sugarcane harvester
Authors:Song, Chunhua1 ; Ou, Yinggang2 ; Liu, Qingting2
Author affiliation:1 Maritime College, Guangdong Communication Polytechnic, Guangzhou 510800, China
2 Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Ou, 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:8
Issue date:August 2012
Publication year:2012
Pages:89-93
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 dynamic simulation, two sections spiral sugarcanes lifter was designed and a sample machine was made. The effect rules of the two sections spiral sugarcane lifter were got through experimental test associated with the application of high-frequency photograph technology. The experiment results showed that, the two sections spiral sugarcane lifter worked well with lodge-angle of 45°-165°. Furthermore, the lifter worked best when the parameter of movement was 0.59, and the picking angle of setting was 5°, and the transportation angle of setting was 60°.
Number of references:10
Main heading:Experiments
Controlled terms:Computer simulation - Design - Harvesters - Photography
Uncontrolled terms:Experimental test - High frequency HF - Simulation - Sugarcane harvesters - Two section
Classification code:408 Structural Design - 723.5 Computer Applications - 746 Imaging Techniques - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2012.08.017
Database:Compendex
6. Accession number:20123815454288
Title:Spectral detection on disease severity of soybean pod anthracnose
Authors:Feng, Lei1 ; Chen, Shuangshuang1 ; Feng, Bin2 ; He, Yong1 ; Lou, Binggan3
Author affiliation:1 School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
2 National Agriculture Exhibition Center, Beijing 100026, China
3 Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
Corresponding author:Lou, 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:8
Issue date:August 2012
Publication year:2012
Pages:175-179 192
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:Visible and near infrared reflectance (Vis/NIR) spectroscopy technique was applied to detect the disease severity of soybean pods anthracnose. Principal component analysis (PCA) combined with back propagation neural network (BPNN) and successive projections algorithm (SPA) combined with BPNN were used as two methods to analyze and prediction of the disease severity of soybean pods anthracnose. Data compression of SPA and learning ability of BPNN was used to achieve the detection of anthracnose severity on soybean pods. The accurate rate of identification was used to evaluate the model. The results of experiment showed that SPA-BPNN was the better calibration model and the accurate rate of detection was 90%. According to the results, SPA was a powerful way for the selection of effective wavelengths, and BPNN model could obtain the accurate detection.
Number of references:14
Main heading:Oilseeds
Controlled terms:Algorithms - Data compression - Neural networks - Principal component analysis
Uncontrolled terms:Back propagation neural networks - Partial least square (PLS) - Soybean - Successive projections algorithm - Vis/NIR spectroscopy
Classification code:723 Computer Software, Data Handling and Applications - 821.4 Agricultural Products - 921 Mathematics - 922.2 Mathematical Statistics
DOI:10.6041/j.issn.1000-1298.2012.08.032
Database:Compendex
7. Accession number:20123815454267
Title:Design and experiment of planetary geared anti-sliding ground wheel for no-tillage planter
Authors:Xia, Lianming1 ; Geng, Duanyang1 ; Wang, Xiangyou1 ; Zhao, Kuibing2
Author affiliation:1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
2 School of Mechanical Engineering, Dalian University of Technology, Dalian 116023, 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:8
Issue date:August 2012
Publication year:2012
Pages:56-60
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:Sliding of ground wheel will cause seed missing and quality decreasing. In order to solve the problem, a planetary geared ground wheel for no-tillage planter was developed. On the basis of analysis of structure and force of the wheel, the factors affecting performance of ground wheel were found. The experiments were conducted with different kinds of ground wheels in tillage and no-tillage soil. It was found from the comparative experiments that the anti-sliding ground wheel had minor sliding rate and steady performance.
Number of references:10
Main heading:Wheels
Controlled terms:Agriculture - Design - Experiments - Factor analysis
Uncontrolled terms:Comparative experiments - No tillage - No-tillage planter - Sliding rate - Steady performance
Classification code:408 Structural Design - 601.2 Machine Components - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901.3 Engineering Research - 922.2 Mathematical Statistics
DOI:10.6041/j.issn.1000-1298.2012.08.011
Database:Compendex
8. Accession number:20123815454270
Title:Analysis on features of air-velocity distribution and droplets deposition pattern for greenhouse air-assisted mist sprayer
Authors:Yuan, Xue1 ; Qi, Lijun1 ; Ji, Ronghua2 ; Zhang, Jianhua1 ; Wang, Hu1 ; Huang, Shikai1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Qi, 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:8
Issue date:August 2012
Publication year:2012
Pages:71-77
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:Simulating models of air-velocity distribution and droplets deposition were developed based on CFD technology. The simulation boundary conditions and model variables were defined according to the working parameters measured from the mist-sprayer. Based on these models, air-velocity distribution characteristic and droplets deposition pattern were obtained on various simulation condition such as different air-assisted velocities and nozzle installation angles. The relative errors of simulated results were confirmed through corresponding experiments on the same condition. The result showed that air-velocity distribution of the mist-sprayer was more advantageous to obtain better effect of droplet deposition when the nozzle installation angle was in the range of 5° to 10°.
Number of references:15
Main heading:Spray nozzles
Controlled terms:Computer simulation - Drops - Greenhouses - Velocity distribution
Uncontrolled terms:Air-assisted mist sprayer - Air-velocity distribution - Deposition patterns - Droplet deposition - Installation angle - Model variables - Relative errors - Simulated results - Working parameters
Classification code:402.1 Industrial and Agricultural Buildings - 443.1 Atmospheric Properties - 631.1 Fluid Flow, General - 723.5 Computer Applications - 943.2 Mechanical Variables Measurements
DOI:10.6041/j.issn.1000-1298.2012.08.014
Database:Compendex
9. Accession number:20123815454278
Title:Flash devolatilization characteristics of biomass particles heated by solid heat carriers
Authors:Li, Zhihe1 ; Yi, Weiming1 ; Gao, Qiaochun1 ; Wang, Jing1 ; Zhang, Deli1 ; Li, Yongjun1
Author affiliation:1 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:8
Issue date:August 2012
Publication year:2012
Pages:116-120
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 investigate biomass devolatilization characteristics heated by solid heat carriers at high heating rate, experiments on the velocity field of biomass particles were conducted with particle image velocimetry (PIV) during the flowing of ceramic balls and pulverized biomass powder in a vertical pipe. Based on the PIV experimental results, the calculation method of residence time of biomass particles was determined. Flash devolatilization experiments of corn stalk were performed with a down flow tube reactor heated by ceramic ball heat carriers at 400°C, 450°C, 500°C and the char was collected at the drop distance of 100 mm, 400 mm, 700 mm, 1 200 mm of the tube, respectively. The devolatilization percentages of the char were analyzed with ash tracer method. Results indicate that the experimental data have excellent repeatability, but the data are not agreement with the model well. The experimental data coincide with the model to great extent when the movement function of the biomass particles is involved in computation of the models.
Number of references:11
Main heading:Biomass
Controlled terms:Ceramic materials - Experiments - Tubes (components) - Velocity
Uncontrolled terms:Ash tracers - Biomass Particle - Ceramic balls - Corn stalk - Devolatilization - Down flows - Experimental data - Heat carriers - High heating rates - Particle image velocimetries - Pulverized biomass - Residence time - Velocity field - Vertical pipes
Classification code:525.1 Energy Resources and Renewable Energy Issues - 616.1 Heat Exchange Equipment and Components - 812.1 Ceramics - 901.3 Engineering Research - 931.1 Mechanics
DOI:10.6041/j.issn.1000-1298.2012.08.022
Database:Compendex
10. Accession number:20123815454280
Title:Design and application of aquatic enterprise governance traceability system based on USB key
Authors:Yang, Xinting1 ; Wu, Tao1, 2 ; Sun, Chuanheng1, 3 ; Liu, Yande2 ; Zhou, Chao1
Author affiliation:1 National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
2 School of Mechatronics Engineering, East China Jiaotong University, Nanchang 330013, China
3 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Sun, C. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:8
Issue date:August 2012
Publication year:2012
Pages:128-133 88
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 aquatic trace identity in the existing regulatory system, a certification and traceability regulatory system based on USB Key was designed. Firstly, several authentication technologies were analyzed focusing on the advantages and disadvantages. Secondly, the key part of USB Key hardware circuit, software system and the certification process of USB Key aquatic products enterprises were designed to solve the security issues of aquatic information transmission. Finally, the aquatic product enterprise certification and traceability monitoring platform was applied in Jiangsu province. The results showed that the regulatory system was convenient, safety, stable and reliable. It can realize the origin of quasi-out, market access, business certification and real-time monitoring of aquatic enterprise governance traceability system.
Number of references:24
Main heading:Industry
Controlled terms:Authentication
Uncontrolled terms:Aquatic products - Authentication technology - Certification process - Design and application - Enterprise governance - Hardware circuits - Identity authentication - Information transmission - Jiangsu province - Key parts - Market access - Monitoring platform - Real time monitoring - Regulatory back - Regulatory systems - Security issues - Software systems - Trace identities - Traceability systems - USB Key
Classification code:723 Computer Software, Data Handling and Applications - 911 Cost and Value Engineering; Industrial Economics - 912 Industrial Engineering and Management - 913 Production Planning and Control; Manufacturing
DOI:10.6041/j.issn.1000-1298.2012.08.024
Database:Compendex
11. Accession number:20123815454261
Title:Design theory and method for drive train of hybrid electric tractor
Authors:Deng, Xiaoting1 ; Zhu, Sihong1 ; Gao, Huisong1 ; Zhang, Ying1
Author affiliation:1 College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Zhu, 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:8
Issue date:August 2012
Publication year:2012
Pages:24-31 36
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 theory of hybrid electric drive train and requirements of working properties and transmission characteristics of tractors, a drive train for parallel hybrid electric tractor (PHET) was designed. Evaluation indicator and calculation model for dynamic and economic performance of hybrid electric tractor (HET) were suggested based on the theory analysis of traction characteristics of HET. The parameter design methods of each component of drive train were discussed. The theory of design and calculation method for drive train of HET was proposed. Taking a designed HET as study object, the changing relationship of driving force and climbing property with the speed changing of engine and motor under different gearshift when engine was working on 60% and 40% of load, and the changing relationship of equivalent energy consumption for 1 h steady operation on plowing with the speed changing of engine and motor under different gearshift were analyzed by calculating. The calculation result of plowing status was checked by simulation model. Results showed that driving force and climbing property were directly proportional with the load of engine, but speed matching range of engine and motor decreased with the increasing of working load of engine. Moreover, when plowing, the error rate was not over 4% in maximum between calculation result and simulation result, and when increasing the speed of engine and motor, equivalent energy consumption increased under a certain gearshift. Furthermore, the energy conservation of HET was higher by 24% in maximum compared to traditional tractor with the same power.
Number of references:14
Main heading:Electric properties
Controlled terms:Computer simulation - Design - Electric drives - Electric traction - Energy utilization - Engines - Tractors (agricultural) - Tractors (truck)
Uncontrolled terms:Calculation models - Design and calculation - Design theory - Drive train - Driving forces - Economic performance - Electric tractors - Error rate - Evaluating indicators - Evaluation indicators - Hybrid electric drives - Parameter design methods - Simulation model - Traction characteristics - Transmission characteristics - Working loads - Working properties
Classification code:723.5 Computer Applications - 705 Electric Generators and Motors - 701.1 Electricity: Basic Concepts and Phenomena - 663.1 Heavy Duty Motor Vehicles - 612 Engines - 525.3 Energy Utilization - 408 Structural Design
DOI:10.6041/j.issn.1000-1298.2012.08.005
Database:Compendex
12. Accession number:20123815454289
Title:Software design of detection system for stored-grain live insects based on computer vision
Authors:Zhang, Hongtao1 ; Hu, Yuxia2 ; Mao, Hanping3 ; Han, Lühua3 ; Wu, Huiling3
Author affiliation:1 Institute of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
2 School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
3 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:8
Issue date:August 2012
Publication year:2012
Pages:180-186
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 detection system for stored-grain live insects was introduced based on visible-near infrared computer vision, and the software realization of the main parts in the system was given. The near infrared images were sloped and distorted by the image registration based on projection transformation with markers. The region-growing method for identifying the live insects in the near infrared image was proposed based on the area ratio of two thresholds for connecting regions. The live insects in the visible image were located accurately by the information fusion of the multi-source images. The live insects in the visible image were located accurately by the information fusion of the multi-source images. Twenty-one global morphological features and seven local morphological features of the live insects were extracted, and the feature space was optimized to seven dimensions. The insects were classified by the classifier based on simulated annealing algorithm and support vector machine. The results showed that the recognition accuracy was 94.8% for the fifteen species of the live insects.
Number of references:11
Main heading:Computer vision
Controlled terms:Error detection - Feature extraction - Image recognition - Information fusion - Infrared devices - Infrared imaging
Uncontrolled terms:Area ratios - Detection system - Feature space - Morphological features - Multi-source images - Near Infrared - Projection transformation - Recognition accuracy - Region growing - Simulated annealing algorithms - Stored-grain live insects - Visible image
Classification code:716 Telecommunication; Radar, Radio and Television - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 741.2 Vision - 741.3 Optical Devices and Systems - 903.1 Information Sources and Analysis
DOI:10.6041/j.issn.1000-1298.2012.08.033
Database:Compendex
13. Accession number:20123815454266
Title:Design and optimization of backward rotary transplanting mechanism in wide-narrow row planting
Authors:Yu, Gaohong1 ; Ma, Chengwen1 ; Sun, Liang1 ; Qiu, Ligang1 ; Zhao, Yun1
Author affiliation:1 School of Mechanical Engineering and Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China
Corresponding author:Yu, G. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:8
Issue date:August 2012
Publication year:2012
Pages:50-55 65
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 working characteristics of walking type transplanting mechanism used in wide-narrow row planting was described. According to it's characteristics, the planetary gear train with two levels of crisscross shaft was used in walking type transplanting mechanism and a transplanting mechanism used in walking type transplanter was proposed. The structure features and working principle of the wide-narrow row transplanting mechanism was analyzed. The angular displacement and the influence of the gear spiral angle. The kinematic model of the transplanting mechanism was built in the space coordinates system, and the displacement equation of the seedlings tip point was got. The parameters were analyzed and optimized by programming. The virtual model of the proposed transplanting mechanism was built with the optimization parameters. The theory model was verified by simulation and experiment. This transplanting mechanism could realize wide-narrow row rice.
Number of references:11
Main heading:Optimization
Controlled terms:Computer simulation - Helical gears
Uncontrolled terms:Angular displacement - Design and optimization - Displacement equation - Kinematic model - Non-circular gears - Optimization parameter - Planetary gear train - Space coordinates - Spiral angle - Structure features - Theory model - Virtual models - Walk transplanter - Working principles
Classification code:601.2 Machine Components - 723.5 Computer Applications - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.08.010
Database:Compendex
14. Accession number:20123815454295
Title:Kinematic analysis of 3-SPR parallel mechanism
Authors:Mei, Jiangping1 ; Gao, Ben1 ; Tan, Yang1 ; Wang, Lan1
Author affiliation:1 School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
Corresponding author:Mei, 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:8
Issue date:August 2012
Publication year:2012
Pages:215-220
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 inverse and forward position model of a 3-SPR parallel platform mechanism was established. The velocity model of each chain was derived on basis of the position analysis. By comparing the calculation analysis of samples and the results derived by simulation software CosmosMotion, the position and velocity analyses were proved to be correct. The virtual mechanism was modeled by using SolidWorks. The geometric shape of workplace was obtained.
Number of references:16
Main heading:Mechanisms
Controlled terms:Computer software
Uncontrolled terms:3-SPR - Calculation analysis - Geometric shape - Kinematic Analysis - Parallel mechanisms - Parallel platforms - Position analysis - Position model - Simulation software - SolidWorks - Velocity analysis - Velocity model - Virtual mechanism - Workplace
Classification code:601.3 Mechanisms - 723 Computer Software, Data Handling and Applications
DOI:10.6041/j.issn.1000-1298.2012.08.039
Database:Compendex
15. Accession number:20123815454279
Title:Effect of calcium salt catalysis on ash and NOx/SO2 emission characteristic during co-combustion
Authors:Wang, Hairong1 ; Yang, Wenbing1 ; Wang, Yali1
Author affiliation:1 School of Engineering, Sun Yat-sen University, Guangzhou 510275, China
Corresponding author:Wang, 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:8
Issue date:August 2012
Publication year:2012
Pages:121-127
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:Choosing lignite mixing with sawdust as object, the effect of calcium salt catalysis on SO2 and NOx emission was analyzed by using circulating fluidized bed reactor. The ash elements groups and mineral composition of ash samples were measured through X-ray fluorescence spectrometer(XRF), X-ray diffraction(XRD) and inductively coupled plasma atomic emission spectrometer(ICP). The result showed CaCO3 had a certain effect on SO2 and NOx emission reduction. The addition of limestone had obvious effect on NOx emission reduction with α=1.0. NOx production reduced with the decreasing of sawdust content. The removal of SO2 was controlled by reaction temperature. Under the condition of temperature of 700-900°C and Ca/S of 2.0, desulfurization was the best. The ash melting phenomenon disappeared with the effect of CaCO3.
Number of references:12
Main heading:Sulfur dioxide
Controlled terms:Calcium carbonate - Catalysis - Chemical reactors - Combustion - Desulfurization - Emission control - Fluid catalytic cracking - Lignite - Neutron emission - Salts - Sawdust - Spectrometers - X ray diffraction
Uncontrolled terms:Ash melting - Ash samples - Calcium salts - Circulating fluidized bed reactor - Cocombustion - Emission characteristics - Emission reduction - Inductively Coupled Plasma Atomic Emission Spectrometers - Mineral composition - Reaction temperature - X-ray fluorescence spectrometer
Classification code:932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 811.2 Wood and Wood Products - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 802.2 Chemical Reactions - 802.1 Chemical Plants and Equipment - 801 Chemistry - 524 Solid Fuels - 521.1 Fuel Combustion - 451.2 Air Pollution Control
DOI:10.6041/j.issn.1000-1298.2012.08.023
Database:Compendex
16. Accession number:20123815454281
Title:Real time monitoring system for aquatic cold-chain logistics based on WSN
Authors:Qi, Lin1 ; Han, Yubing2 ; Zhang, Xiaoshuan2 ; Xing, Shaohua1 ; Fu, Zetian1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Fu, 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:8
Issue date:August 2012
Publication year:2012
Pages:134-140
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 reduce the losses during logistics of aquatic products and improve the informationization level in aquatic products cold-chain logistics, a wireless sensor network (WSN) based on real time monitor system was proposed for aquatic products cold-chain logistics with ZigBee protocol and CC2530 wireless sensor SoC. The system included a sensor node designed for temperature data collection, a coordinator used for data upload and ZigBee network organization, a remote management system developed for cold-chain real time monitor, data storage and ZigBee network control. The system test under cold-chain logistic environment proved that it could be equipped in the whole process of the aquatic products cold-chain and the monitoring node was reliable under -18°C. The communication performance test showed that the node with a -3 dBm RF power achieved a 8.4% or lower packet loss rate within a 30 m communication distance, the energy consumption of data communication was low.
Number of references:16
Main heading:Zigbee
Controlled terms:Communication - Energy utilization - Sensor nodes - Wireless sensor networks
Uncontrolled terms:Aquatic - Aquatic products - Communication distance - Communication performance - Data storage - Data-communication - Informationization - Moni-toring nodes - Packet loss rates - Real time monitoring system - Real time monitors - Remote management - Rf-power - System test - Temperature data - Whole process - Wireless sensor - ZigBee networks
Classification code:525.3 Energy Utilization - 716 Telecommunication; Radar, Radio and Television - 722 Computer Systems and Equipment - 722.3 Data Communication, Equipment and Techniques
DOI:10.6041/j.issn.1000-1298.2012.08.025
Database:Compendex
17. Accession number:20123815454283
Title:Optimization of drying process for multilayer belt dryer
Authors:Chang, Jian1 ; You, Changjing1 ; Yang, Deyong1 ; Liu, Xiangdong1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Liu, 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:8
Issue date:August 2012
Publication year:2012
Pages:148-154
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 drying process of a multilayer belt dryer was modeled and simulated considering both the heat and mass transfer by C language. The data of the moisture content and temperature distributions in material bed and the air humidity and temperature profiles in air channel above material bed were obtained from the results of the simulation. The drying experiment data of garlic slices in an industrial scale dryer was obtained to verify the validation of the model. Then, based on the drying kinetic data obtained from the further simulations, the proper parameters of dryer structure and operating conditions were discussed, including belt length, number of belt layer, height of air channel, belt flip time, thickness of material bed and air velocity.
Number of references:21
Main heading:Drying
Controlled terms:Air - C (programming language) - Dryers (equipment) - Heat transfer - Mass transfer - Multilayers
Uncontrolled terms:Air channels - Air humidity - Air velocities - Belt dryer - Belt layers - C language - Drying kinetic - Drying process - Experiment data - Garlic - Garlic slices - Heat and mass transfer - Industrial scale - Operating condition - Simulation - Temperature profiles
Classification code:933.1 Crystalline Solids - 804 Chemical Products Generally - 802.1 Chemical Plants and Equipment - 723.1.1 Computer Programming Languages - 642.1 Process Heating - 641.3 Mass Transfer - 641.2 Heat Transfer
DOI:10.6041/j.issn.1000-1298.2012.08.027
Database:Compendex
18. Accession number:20123815454271
Title:Measurement of charged droplets impacting plant target interface by using PDPA
Authors:Jia, Weidong1 ; Xue, Fei1 ; Li, Cheng1 ; Liu, Dong2 ; Tang, Aikun2
Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
2 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Jia, 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:8
Issue date:August 2012
Publication year:2012
Pages:78-82
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 process of charged droplets impacting the plant target interface, a test method by using PDPA was given. Both the morphological characteristics of charged droplets after impact and its causes were analyzed. The measurement results indicated that the special space movement form of charged droplets determined their unique morphological characteristics after impact. Charged droplets after impact would adhere to the interface or rebound but never splash. The existence of more fine droplets made coalescence phenomenon remarkable so as to increase the charged droplet size but decrease their number. The critical value of K for determing a single droplet's adhesion or rebound after impact was not suitable for the process of charged droplets impacting the plant target interface. However, 30, the critical value of normal Weber number, could be a reference for determing charged droplets' adhesion or rebound after impact. Larger tangential velocity may encourage charged droplets to rebound from the interface after impact. A part of normal kinetic energy of charged droplets would translate into tangential kinetic energy after impact.
Number of references:20
Main heading:Suspensions (fluids)
Controlled terms:Adhesion - Coalescence - Drops - Kinetic energy - Measurements
Uncontrolled terms:Charged droplet - Coalescence phenomenon - Critical value - Impact - Measurement results - Morphological characteristic - Single droplet - Tangential velocities - Target interface - Test method - Weber numbers
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 951 Materials Science - 941 Acoustical and Optical Measuring Instruments - 801.3 Colloid Chemistry - 801 Chemistry - 931.1 Mechanics
DOI:10.6041/j.issn.1000-1298.2012.08.015
Database:Compendex
19. Accession number:20123815454276
Title:Aerodynamic optimization design of centrifugal fan blades based on 3-D inverse design method
Authors:Yang, Wei1 ; Wang, Fujun1 ; Wang, Hong2
Author affiliation:1 College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
2 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
Corresponding author:Yang, 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:8
Issue date:August 2012
Publication year:2012
Pages:105-109
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 optimization design method based on 3-D inverse design method and CFD was developed by combining design of experiment method, response surface method and simulated annealing optimization calculation. The method was applied to a centrifugal fan blade design by setting the impeller efficiency and the circulation distribution parameters as the optimization object and the optimization design variables respectively. The efficiency was improved by 2.2% with the optimization method. The effects of the circulation parameters and their interaction effects on the impeller efficiency were analyzed according to the constructed response surface between the design parameters and the impeller efficiency. It is shown that the inlet circulation distribution on the hub plays an important role on the efficiency. Comparing with the hub, the circulation distribution shape on the shroud has more influences on the efficiency.
Number of references:10
Main heading:Design
Controlled terms:Centrifugation - Computational fluid dynamics - Efficiency - Impellers - Simulated annealing - Surface properties - Three dimensional
Uncontrolled terms:Aerodynamic optimization design - Centrifugal fans - Circulation distribution - Design parameters - Interaction effect - Inverse design methods - Inverse designs - Optimization design - Optimization method - Response surface - Response surface method - Simulated annealing optimization
Classification code:921.6 Numerical Methods - 921 Mathematics - 913.1 Production Engineering - 951 Materials Science - 902.1 Engineering Graphics - 601.2 Machine Components - 408 Structural Design - 802.3 Chemical Operations
DOI:10.6041/j.issn.1000-1298.2012.08.020
Database:Compendex
20. Accession number:20123815454297
Title:3-D tolerance model based on operation removal model
Authors:Zhao, Peng1 ; Sheng, Buyun1
Author affiliation:1 School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China
Corresponding author:Zhao, 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:8
Issue date:August 2012
Publication year:2012
Pages:226-230 225
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 of 3-D tolerance modeling and analysis for operation removal model was proposed based on operation feature recognition. The roughcast was considered as the assembly of part model and operation removal models. Small displacement torsor (SDT) theory was used to describe design and process tolerances while the changeable constrains of tolerance torsors were calculated. The tolerance network graph of the operation removal models was constructed and the tolerance propagation mechanism in the tolerance network was discussed. Then the process tolerance stack-up models were achieved, which was the basis of process tolerance allocation. Finally, a case was analyzed to verify the validity of the proposed theory. The process tolerance allocating method based on the proposed theory was mentioned briefly.
Number of references:13
Main heading:Three dimensional
Controlled terms:Agricultural engineering - Mechanical engineering - Models
Uncontrolled terms:Feature recognition - Network graph - Process tolerance - Propagation mechanism - Small displacement torsor - Tolerance modeling - Tolerance models
Classification code:608 Mechanical Engineering, General - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 902.1 Engineering Graphics
DOI:10.6041/j.issn.1000-1298.2012.08.041
Database:Compendex
21. Accession number:20123815454277
Title:Optimization of processing parameters for rapid liquefaction of corn stover under atmospheric pressure
Authors:Liu, Yuhuan1 ; Wang, Yingkuan2 ; Ruan, Roger1, 3 ; Li, Ziling1 ; Lin, Xiangyang3 ; Liu, Chengmei1
Author affiliation:1 Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
2 Chinese Academy of Agricultural Engineering, Beijing 100125, China
3 Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul MN 55108, United States
Corresponding author:Ruan, 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:8
Issue date:August 2012
Publication year:2012
Pages:110-115
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 four key parameters, including reaction time, reaction temperature, the amount of corn stover charged to definite liquefying reagent, and the dosage of catalyst affect the efficiency of corn stover liquefaction were investigated. With the help of SAS software, rotational quadratic regression design and response surface analysis, the relationships among unliquefied corn stover residue and reaction time, reaction temperature, the amount of corn stover charged to definite liquefying reagent, and the dosage of catalyst were studied. The mutual interaction of the four parameters was quantificationally described. The experimental results showed that with liquefying reagent of 100 g, the reaction temperature of 158°C, the reaction time of 63 min, the amount of corn stover meal charged of 17 g and the catalyst dosage of 2.7 g, the liquefied products could be optimized with only 0.2% unliquefied.
Number of references:15
Main heading:Chemical reactions
Controlled terms:Atmospheric pressure - Catalysts - Liquefaction - Optimization - Surface analysis
Uncontrolled terms:Corn stover - Interaction - Key parameters - Mutual interaction - Processing parameters - Quadratic regression - Rapid liquefaction - Reaction temperature - Response surface analysis
Classification code:921.5 Optimization Techniques - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 951 Materials Science - 802.3 Chemical Operations - 443.1 Atmospheric Properties - 423 Non Mechanical Properties and Tests of Building Materials - 802.2 Chemical Reactions
DOI:10.6041/j.issn.1000-1298.2012.08.021
Database:Compendex
22. Accession number:20123815454260
Title:Crashworthiness of flat truck cab based on power dissipation allocating
Authors:Wang, Shanpo1, 2 ; Wan, Xinming3 ; Luo, Jiayuan3 ; Li, Yang3
Author affiliation:1 School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
2 China National Heavy Duty Truck Group Co., Ltd., Ji'nan 250002, China
3 China Automotive Engineering Research Institute Co., Ltd., Chongqing 400039, 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:8
Issue date:August 2012
Publication year:2012
Pages:19-23 6
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 the lack of specific energy absorption area and components for flat truck cab, a method for improving the cab's crashworthiness was proposed, which was realized by reallocating the power dissipation of each component. Referring to rule ECE R29, finite element method was used to simulate the pendulum collision process of some real vehicle to distribute the power dissipation by changing the thickness of components of cab. Living space of the cab after collision was evaluated to analyze the relationship between it and power dissipation, and experiment was carried out based on the analysis result to give some reasonable instruction. The analysis result showed that an appropriate increasing or decreasing of power dissipation of each component could optimize the crashworthiness of cab effectively.
Number of references:11
Main heading:Trucks
Controlled terms:Crashworthiness - Energy dissipation - Finite element method
Uncontrolled terms:Collision process - Driving cab - Real vehicles - Specific energy absorption
Classification code:525.4 Energy Losses (industrial and residential) - 663.1 Heavy Duty Motor Vehicles - 914.1 Accidents and Accident Prevention - 921.6 Numerical Methods
DOI:10.6041/j.issn.1000-1298.2012.08.004
Database:Compendex
23. Accession number:20123815454290
Title:Path analysis and numerical simulation of MDS of tomato stem diameter
Authors:Wang, Xiaosen1 ; Liu, Zugui1 ; Liu, Hao1 ; Yang, Shenjiao1 ; Zhang, Xiaopei1 ; Meng, Zhaojiang1
Author affiliation:1 Key Laboratory for Crop Water Requirement and Regulation, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
Corresponding author:Meng, 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:8
Issue date:August 2012
Publication year:2012
Pages:187-192
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 tomato planted in plots in spring summer greenhouse as experiment material, the correlations between maximum daily shrinkage (MDS) in tomato stem diameter and meteorological factors such as water surface evaporation Ew, daily maximum temperature Tmax, daily average temperature Tm, daily average vapor pressure deficit DVPDm, midday vapor pressure deficit DVPDmd, daily total radiation Rs and daily maximum radiation Rmax were studied by using path analysis method. The results indicated that the direct path coefficients between Rmax, DVPDm, Ew and MDS were all positive. The Rmax's coefficient is the highest and the DVPDm's coefficient is the second. The correlations between MDS and Rmax, DVPDm were significant, but the correlation between MDS and Ew was not significant. Therefore, the Rmax and DVPDm were decision variables which controlled tomato stem diameter variation directly in greenhouse. In addition, the direct path coefficients between Tmax, Tm, DVPDmd, Rs and MDS were all negative, but their sum coefficients between direct and indirect path coefficients were all positive. Tmax, Tm, DVPDmd, Rs had indirect influence on tomato stem diameter variation through Rmax and DVPDm. Based on this conclusion, the simulating equation between MDS and Rmax, DVPDm was established which was significant through test, and the calculated values of MDS could reflect its observed values exactly.
Number of references:15
Main heading:Fruits
Controlled terms:Greenhouses - Regression analysis - Vapors
Uncontrolled terms:Calculated values - Decision variables - Direct paths - Indirect paths - Maximum temperature - MDS - Meteorological factors - Path analysis - Stem diameter - Tomato - Vapor pressure deficit - Water surface
Classification code:804 Chemical Products Generally - 821.4 Agricultural Products - 821.6 Farm Buildings and Other Structures - 922.2 Mathematical Statistics
DOI:10.6041/j.issn.1000-1298.2012.08.034
Database:Compendex
24. Accession number:20123815454274
Title:Orthogonal experiment optimization of parameters of rotary roller-type fruit-vine separation mechanism for processing tomato
Authors:Bi, Xinsheng1 ; Xiao, Binbin1 ; Zhang, Jin1 ; Huang, Guowei1
Author affiliation:1 College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Corresponding author:Bi, 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:8
Issue date:August 2012
Publication year:2012
Pages:94-98 120
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 optimize the operation parameters of the processing tomato fruit-vine separation mechanism, a rotary roller-type separation bedstand was designed. Mathematical models that described relationship between the performance indexes and influence factors of the separation mechanism were established by applying quadrate regression experiment with general rotary design method. The tendency and regularity of the separation performance influenced by the factors were analyzed. For the Ligeer 87-5 processing tomato, with a certain tomato separation rate, tomato damage rate and tomato impurity rate, the roller rotation speed was 21 r/min, cam plate rotation speed was 42 r/min, deflector rod oscillation amplitude was 110 mm by parameter optimization.
Number of references:14
Main heading:Fruits
Controlled terms:Experiments - Mathematical models - Optimization - Rollers (machine components) - Separation
Uncontrolled terms:Damage rate - Operation parameters - Optimization of parameters - Orthogonal experiment - Oscillation amplitude - Parameter optimization - Performance indices - Rotary design - Rotation speed - Separation mechanism - Separation parameters - Separation performance - Separation rate
Classification code:601.2 Machine Components - 802.3 Chemical Operations - 821.4 Agricultural Products - 901.3 Engineering Research - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.08.018
Database:Compendex
25. Accession number:20123815454259
Title:Lightweight design for heavy-duty truck cab
Authors:Wang, Xinyu1, 2 ; Wang, Dengfeng1 ; Chen, Jing1 ; Song, Xuewei1 ; Sun, Wanlai2 ; Liu, Peiwu2
Author affiliation:1 State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
2 R and D Center, China FAW Group Corporation, Changchun 130011, 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:8
Issue date:August 2012
Publication year:2012
Pages:13-18
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 heavy-duty truck cab was analyzed and lightweight designed by using topological optimization method. Performance of the initial cab and lightweight structure was compared. It indicated that the front pendulum impact property of the cab and roof static pressure performances of the high-roof cab were improved when structural strength, rigidity and low-frequency natural vibration characteristics of the cab were not lower than the initial cab. Meanwhile, structural mass of the cab was reduced by 46 kg without changing of cab materials. A good lightweight design effect is acquired.
Number of references:11
Main heading:Trucks
Controlled terms:Design - Roofs - Topology
Uncontrolled terms:Cab - Heavy duty trucks - Impact property - Lightweight design - Low frequency - Natural vibration characteristic - Static pressure - Structural mass - Structural strength - Topological optimization
Classification code:402 Buildings and Towers - 408 Structural Design - 663.1 Heavy Duty Motor Vehicles - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.6041/j.issn.1000-1298.2012.08.003
Database:Compendex
26. Accession number:20123815454286
Title:Quantitative detection of somatic cell count in milk based on electrical parameters and support vector regression
Authors:Wu, Haiyun1 ; Zuo, Yueming1 ; Cui, Chuanjin2 ; Ma, Haili3 ; Song, Haiyan1
Author affiliation:1 College of Engineering, Shanxi Agricultural University, Taigu 030801, China
2 College of Electrical Engineering, Hebei United University, Tangshan 063009, China
3 College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
Corresponding author:Zuo, 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:8
Issue date:August 2012
Publication year:2012
Pages:164-169
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 based on electrical parameters and support vector regression for quantitative detection of somatic cell count (SCC) was exploded. Firstly, the SCC of 100 raw milk samples was confirmed by the standard microscope counting with iodine staining. And then, an interdigitated microelectrode was used in impedance measurements of milk samples in the frequency range from 0.01 Hz to 100 kHz. An equivalent electrical circuit of the milk samples was deduced for the measured impedance data. By using of Zview software, the electrical parameters of the equivalent electrical circuit were extracted and the relationships between these electrical parameters and the degree of mastitis were analyzed. At last, based on these electrical parameters and support vector regression (SVR), a quantitative detection model of SCC was established and its feasibility was studied. It was showed that one of the electrical parameters of RS was decreased with increasing of SCC, while other electrical parameters such as Cdl-T and Cdl-P presented a nonlinear trend. The SVR model was good for prediction of SCC with high precision except the negative samples. The average relative error was 29.40%, and the bovine mastitis detection rate for 1 (sub-clinical), 2 (relative serious infection), and 3 (serious infection) level of samples were 100%.
Number of references:23
Main heading:Vectors
Controlled terms:Cells - Diseases - Electric network analysis - Iodine - Microelectrodes - Networks (circuits) - Regression analysis
Uncontrolled terms:Dairy cow - Electrical parameter - Mastitis - Quantitative detection - Somatic cell count - Support vector regression (SVR)
Classification code:922.2 Mathematical Statistics - 921.1 Algebra - 804 Chemical Products Generally - 801.2 Biochemistry - 703.1.1 Electric Network Analysis - 703.1 Electric Networks - 461 Bioengineering and Biology
DOI:10.6041/j.issn.1000-1298.2012.08.030
Database:Compendex
27. Accession number:20123815454263
Title:Numerical calculation and experiment of high-power variable speed hydrodynamic coupling
Authors:He, Yandong1 ; Liu, Gang2 ; Zhu, Xiangzhe1
Author affiliation:1 School of Mechanical Engineering, Liaoning Shihua University, Fushun 113001, China
2 Liaoning Provincial Institute of Agricultural Mechanization, Shenyang 110161, China
Corresponding author:He, 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:8
Issue date:August 2012
Publication year:2012
Pages:37-41 93
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 transient unsteady two phase flow of high-power variable speed hydrodynamic coupling was numerical simulated based on the 3-D multi-phase flow theory and computational fluid dynamics (CFD) by using the sliding mesh method and the characteristics was predicted. The pressure and velocity distribution were analyzed to reveal the flow rule and characteristics of flow field. The reduced efficiency reasons were revealed. The theoretical calculation was compared with the external characteristic experiment under different filling rates. The maximum error was less than 15% between computational result of original characteristics and experiment results, and the correctness of theory method was verified.
Number of references:10
Main heading:Experiments
Controlled terms:Computational fluid dynamics - Hydrodynamics - Numerical methods - Two phase flow
Uncontrolled terms:Computational results - External characteristic - Filling rate - Flow rules - High-power - Hydrodynamic coupling - Maximum error - Numerical calculation - Pressure and velocity distributions - Sliding mesh methods - Theoretical calculations - Variable speed
Classification code:631 Fluid Flow - 901.3 Engineering Research - 921.6 Numerical Methods
DOI:10.6041/j.issn.1000-1298.2012.08.007
Database:Compendex
28. Accession number:20123815454262
Title:Driving intention identification method for hybrid vehicles based on neural network
Authors:Wang, Qingnian1 ; Tang, Xianzhi1 ; Wang, Pengyu1 ; Tian, Liyuan1 ; Sun, Lei1
Author affiliation:1 State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
Corresponding author:Wang, 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:8
Issue date:August 2012
Publication year:2012
Pages:32-36
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 adaptive fuzzy neural network was built based on Takagi-Sugeno model. The inference rules were obtained by training the fuzzy neural network. The simulation result proved that the fuzzy inference rules based on Takagi-Sugeno model could infer driver intention excellently and hybrid vehicles' control strategy could be optimized based on driver intention inference, thus more hybrid vehicles' fuel consumption could be reduced.
Number of references:10
Main heading:Hybrid vehicles
Controlled terms:Fuzzy neural networks - Land vehicle propulsion - Modal analysis
Uncontrolled terms:Adaptive fuzzy neural network - Control strategies - Driver intention - Fuzzy inference rules - Identification method - Inference rules - Simulation - Takagi-Sugeno models
Classification code:432 Highway Transportation - 682.1.2 Locomotives - 723.4 Artificial Intelligence - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2012.08.006
Database:Compendex
29. Accession number:20123815454291
Title:Automatic processing system of massive data in laying hens raise
Authors:Lao, Fengdan1 ; Teng, Guanghui2 ; Yu, Ligen2 ; Li, Zhuo2
Author affiliation:1 Network Center, China Agricultural University, Beijing 100083, China
2 Key Laboratory of Ministry of Agriculture for Agricultural Engineering in Structure and Environment, China Agricultural University, Beijing 100083, China
Corresponding author:Teng, G. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:8
Issue date:August 2012
Publication year:2012
Pages:193-197
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:For providing traceable farm production, a data automatic processing system for egg production was designed and implemented, which altered frequency of acquisition based on time. Java media framework was used as the main model to acquire and process massive image and sound datasets. The system could not only acquire and save synchronized environmental, image and sound data, but also significantly reduce storage space and costs, and speed up query speeds. Tests show that image and sound data in one day is only 200-400 MB, and collected data in one year is about 70-140 GB, yet contains most of the scenes of the production process.
Number of references:11
Main heading:Search engines
Controlled terms:Acoustic waves - Data handling - Metadata - Ocean habitats
Uncontrolled terms:Automatic processing system - Data sets - Egg production - Farm production - Image - Laying hens - Massive data - Production process - Raise - Sound data - Storage spaces
Classification code:472 Ocean Engineering - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 751.1 Acoustic Waves
DOI:10.6041/j.issn.1000-1298.2012.08.035
Database:Compendex
30. Accession number:20123815454257
Title:Vehicle stability under extreme adhesion conditions based on unsteady constraint test system
Authors:Wang, Guoye1 ; Zhang, Yanru2 ; Zhang, Juanli1 ; Feng, Yanli1 ; Zhang, Lu3
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
3 Transportation Institute, Inner Mongolia University, Huhhot 010070, China
Corresponding author:Zhang, 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:8
Issue date:August 2012
Publication year:2012
Pages:1-6
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 test method of vehicle stability under extreme adhesion conditions based on the unsteady constraint test system was proposed. The unsteady constraint test system model was set up. Based on the Matlab/Simulink, the dynamic simulation system of unsteady constraint dynamics test system for the Chery A3 car was established. Using the simulation model, the stability control performances of the independent vehicle with or without ESP and test system under extreme adhesion conditions was simulated and analyzed. The study results indicate that the test method of vehicle stability under extreme adhesion conditions based on the unsteady constraint test system is feasible, safe and reliable, which could provide a reliable test platform and effective test verification method for researching and designing ESP control system.
Number of references:12
Main heading:Automobile testing
Controlled terms:Adhesion - Computer simulation - Dynamics - Software testing - System stability - Vehicles
Uncontrolled terms:Dynamic simulation systems - Electronic stability programs - MATLAB /simulink - Simulation model - Stability control - Test - Test method - Test platforms - Test systems - Test verification - Vehicle stability
Classification code:951 Materials Science - 931.1 Mechanics - 801 Chemistry - 961 Systems Science - 723.5 Computer Applications - 662 Automobiles and Smaller Vehicles - 432 Highway Transportation - 663 Buses, Tractors and Trucks
DOI:10.6041/j.issn.1000-1298.2012.08.001
Database:Compendex
31. Accession number:20123815454294
Title:Dynamics analysis of spatial compliant parallel mechanism
Authors:Jia, Xiaohui1 ; Liu, Jinyue1 ; Tian, Yanling2
Author affiliation:1 School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
2 School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
Corresponding author:Tian, 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:8
Issue date:August 2012
Publication year:2012
Pages:210-214
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:Due to the requirement of multi-dimensional nanometer level positioning of the compliant precision mechanism, a piezo-driven spatial compliant parallel mechanism was presented through the conventional Delta parallel mechanism. The inverse kinematics was developed on the basis of the Pseudo-Rigid-Body (PRB) model. After the simplifying of the mass of passive arm and calculating the strain energy of the flexure hinges, the dynamic equation was established through the Lagrangian approach, and the natural frequencies are evaluated by utilizing the geometric parameters. Three natural frequency errors, which were along with three primary translation directions, between the experiment results and the theoretical analysis were 12.71%, 12.14% and 14.90%. The error between the finite element simulation and the theoretical results were 6.20%, 5.66% and 10.28%. The results also showed that the simplified process during the theoretical analysis was reasonable and the derived mathematics model was creditable.
Number of references:14
Main heading:Compliant mechanisms
Controlled terms:Dynamics - Hinges - Inverse kinematics - Lagrange multipliers - Mechanisms - Natural frequencies
Uncontrolled terms:Dynamic equations - Dynamics analysis - Finite element simulations - Flexure hinge - Geometric parameter - Lagrangian approaches - Mathematics model - Nanometer level - Parallel mechanisms - Precision mechanisms - Pseudo-rigid-body - Theoretical result
Classification code:601.3 Mechanisms - 605 Small Tools and Hardware - 711.1 Electromagnetic Waves in Different Media - 921 Mathematics - 931.1 Mechanics
DOI:10.6041/j.issn.1000-1298.2012.08.038
Database:Compendex
32. Accession number:20123815454282
Title:Thermal stability of typical refrigerated trucks compartment under outdoor sol-air temperature conditions
Authors:Li, Jin1, 2 ; Xie, Ruhe3 ; Liu, Guanghai3 ; Lü, Ning3 ; Liu, Haorong3
Author affiliation:1 School of Traffic and Transportation Engineering, Central South University, Changsha 410083, China
2 School of Physics and Mechanical and Electrical Engineering, Shaoguan University, Shaoguan 512005, China
3 Logistics and Transport Research Institute, Guangzhou University, Guangzhou 510006, China
Corresponding author:Xie, 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:8
Issue date:August 2012
Publication year:2012
Pages:141-147 120
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:Considering the factors of direct solar radiation, sky diffuse radiation, ground reflected radiation, outdoor air temperature, and the vehicle speed, compartment outdoor wall surface temperature function with two-order harmonic Fourier series expression was used as a boundary conditions. The effect factors of time lag, decrement, and thermal stability upon four kinds typical refrigerated trucks insulation compartment were analyzed by using combined method of thermal theory analysis and experimental validation. The analysis results show that different compartments insulation materials will cause different of time lag and decrement coefficient which increases with the increasing of the thermal inertia index and heat resistance of compartment. Different driving directions and insulation materials will cause different compartment indoor wall surface temperatures accordance with the sinusoidal variation. The compartment indoor wall surface temperature change with time closes to the compartment inner air temperature. The thermal stability inside compartment is determined by thermal resistance and thermal inertia index of insulation material. The order from the best to the worst is VIP compartment, extruded polystyrene composite compartment, polyurethane thermal insulation compartment and polystyrene insulation composite compartment.
Number of references:17
Main heading:Atmospheric temperature
Controlled terms:Fourier series - Heat resistance - Insulating materials - Permafrost - Polystyrenes - Sols - Surface properties - Thermal insulation - Thermodynamic stability - Trucks
Uncontrolled terms:Air temperature - Combined method - Diffuse radiation - Direct solar radiation - Effect factors - Experimental validations - Extruded polystyrenes - Fourier - Insulation composite - Insulation materials - Outdoor-air temperature - Radiation intensity - Refrigerated trucks compartment - Series expression - Sinusoidal variations - Sol-air temperature - Thermal inertia - Thermal theory - Time lag - Vehicle speed - Wall surface temperature
Classification code:921.3 Mathematical Transformations - 815.1.1 Organic Polymers - 804 Chemical Products Generally - 663.1 Heavy Duty Motor Vehicles - 931.2 Physical Properties of Gases, Liquids and Solids - 641.1 Thermodynamics - 443.1 Atmospheric Properties - 413.2 Heat Insulating Materials - 413 Insulating Materials - 483.2 Foundations
DOI:10.6041/j.issn.1000-1298.2012.08.026
Database:Compendex
33. Accession number:20123815454285
Title:Moisture absorption and crystal transformation of inulin
Authors:Luo, Denglin1 ; Xu, Wei1 ; Xu, Baocheng1 ; Liu, Jianxue1 ; Chen, Hong1
Author affiliation:1 College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China
Corresponding author:Luo, 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:8
Issue date:August 2012
Publication year:2012
Pages:160-163 192
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 explore the storage environment and crystal structure transformation of inulin after water absorption, the hygroscopicity of inulin at 25°C, 30°C and 45°C were studied through static adsorption method. The crystal change was explored by using X-ray diffraction. The results showed that the moisture absorption ability of inulin was relative strong, which increased with increasing humidity and temperature. When the relative humidity of environment was 98%, the moisture absorption of inulin was 40.5% and 45.0% at 30°C and 45°C, respectively. The values of critical relative humidity were 75.73%, 87.54% and 87.78% at 25°C, 30°C and 45°C, respectively. The X-ray diffraction results illustrated that inulin power was an amorphous structure in dry state. The change from amorphous state to semi-crystalline state would happen during the sorption content ranged from 6.50% to 11.25% with a peak of 2θ of 9.1°. The crystal inulin increased with increasing humidity when the moisture absorption was higher than 11.25%.
Number of references:16
Main heading:Polysaccharides
Controlled terms:Adsorption - Amorphous materials - Crystal structure - Crystalline materials - X ray diffraction
Uncontrolled terms:Amorphous state - Amorphous structures - Critical relative humidity - Crystal structure transformation - Crystal transformation - Dry state - Inulin - Moisture absorption - Semicrystallines - Static adsorption
Classification code:802.3 Chemical Operations - 804.1 Organic Compounds - 933 Solid State Physics
DOI:10.6041/j.issn.1000-1298.2012.08.029
Database:Compendex
34. Accession number:20123815454287
Title:Diagnosis of rice nitrogen nutrition based on spectral and shape characteristics of scanning leaves
Authors:Gu, Qing1 ; Deng, Jinsong1 ; Lu, Chao1 ; Shi, Yuanyuan2 ; Wang, Ke1 ; Shen, Zhangquan1
Author affiliation:1 Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, Zhejiang University, Hangzhou 310058, China
2 Baise Tobacco Company, Baise 533000, 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:8
Issue date:August 2012
Publication year:2012
Pages:170-174 159
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 leaves of rice were captured by scanner. Integrated method combining digital image processing, parameter optimization and classification was used to explore leaves spectral and shape characteristics which were adopted to diagnose and recognize rice nitrogen nutrition. Proportion of etiolated area in the tip of leaf was extracted by method of object-oriented classification. The results of exponential regression analysis showed high correlation between tip etiolated area proportion and leaf nitrogen concentration (R2=0.863). The color indices of tip as well as whole leaves were extracted and exponential regression analysis with leaf nitrogen concentration was made, which illustrated the better performance of representation of rice nitrogen nutrition with tip information. Optimal selection of subset by means of CfsSubsetEval and Scatter search combined with support vector machine were used for pattern recognition. The result of accuracy assessment indicated that nitrogen deficiency and healthy leaves could be easily recognized and the accuracy descended with the improvement of nitrogen treatment. The accuracy of excessive nitrogen nutrition status was low. The leaf area could be a favorable assistant for recognition under deficient and healthy status.
Number of references:14
Main heading:Nitrogen
Controlled terms:Image processing - Nutrition - Optimization - Pattern recognition - Regression analysis - Statistics
Uncontrolled terms:Accuracy assessment - Color index - Exponential regression - Image - Integrated method - Leaf area - Leaf nitrogen - Nitrogen deficiency - Nitrogen nutrition - Nitrogen treatment - Object oriented classification - Optimal selection - Parameter optimization - Rice - Scatter search - Shape characteristics - Shape features - Spectral feature
Classification code:461.7 Health Care - 716 Telecommunication; Radar, Radio and Television - 741 Light, Optics and Optical Devices - 804 Chemical Products Generally - 921.5 Optimization Techniques - 922.2 Mathematical Statistics
DOI:10.6041/j.issn.1000-1298.2012.08.031
Database:Compendex
35. Accession number:20123815454293
Title:Dynamic modeling of planar macro-driven parallel robot
Authors:Gao, Mingwang1, 2 ; Zhang, Xianmin1
Author affiliation:1 Guangdong Province Key Laboratory of Precision Equipment and Manufacturing Technology, South China University of Technology, Guangzhou 510641, China
2 College of Mechanical Engineering, Shandong University of Technology, Zibo 255012, 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:8
Issue date:August 2012
Publication year:2012
Pages:205-209 214
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:The dynamic modeling and slide-mode control for a planar macro-micro parallel robot were investigated. Firstly, the inverse position and the forward position were analyzed by vector method. The velocities and accelerations of the mechanism were derived. Then, pivotal points were selected. The partial velocity and angular velocity about these ones were obtained. The inertial force and moment of the links were obtained by Newton-Euler formulation. Furthermore, based on the principle of virtual work, the dynamic formulation of the system with micro-driven table was formulated. Finally, a sliding-mode controller was designed. The result showed that proposed method was effective.
Number of references:10
Main heading:Robots
Controlled terms:Agricultural engineering - Dynamic models - Mechanical engineering
Uncontrolled terms:Dynamic formulation - Inertial forces - Newton Euler formulation - Parallel robots - Principle of virtual work - Sliding mode controller - Vector method
Classification code:608 Mechanical Engineering, General - 731.5 Robotics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2012.08.037
Database:Compendex
36. Accession number:20123815454258
Title:Vehicle stability control test system applied on low friction road based on CAN technology
Authors:Zhang, Xiaolong1, 2 ; Li, Liang2 ; Cao, Chengmao1 ; Song, Jian2
Author affiliation:1 School of Engineering, Anhui Agricultural University, Hefei 230036, China
2 State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Corresponding author:Cao, C. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:8
Issue date:August 2012
Publication year:2012
Pages:7-12
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 measure and debug control strategy for vehicle stability on the low friction road, the vehicle stability control test system was developed, which were composed of the vehicle body path and attitude model, the vehicle stability controller model and the double CAN nodes data acquisition model. The data synchronism among each model was resorted to the signal of pulse per second, which was output by the GPS receiver. The CAN bus was employed to transfer data between models. More than four technology methods were introduced in details. They were the test method of vehicle side slipangle, the installing and initial alignment of inertial measurement unit (IMU), the time delay compensation of signal transforming and data transmission for GPS receiver and IMU, and the quickly transmission realization from serial input to CAN output. The systematic road way tests verified the functional reliability of the proposed system. The test system developed CAN nodes or employed the vehicle CAN bus to achieved the information of standard sensors included in ESC and engine management system. The real data was provided for understanding the vehicle's state on the extreme operation conditions. So the developed test system provides an effective means to analyze vehicle stability control strategy.
Number of references:10
Main heading:Information management
Controlled terms:Data communication systems - Delay control systems - Friction - Global positioning system - Program debugging - Roads and streets - Signal receivers - Testing - Tribology - Units of measurement - Vehicle transmissions - Vehicles
Uncontrolled terms:Acquisition models - CAN - CAN bus - CAN technology - Control strategies - Controller models - Engine management systems - GPS receivers - Inertial measurement unit - Initial alignment - Low friction - Operation conditions - Road way test - Stability control - Test method - Test systems - Time delay compensation - Vehicle body - Vehicle stability - Vehicle stability control
Classification code:723 Computer Software, Data Handling and Applications - 723.1 Computer Programming - 731.1 Control Systems - 902.2 Codes and Standards - 903.2 Information Dissemination - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics - 718 Telephone Systems and Related Technologies; Line Communications - 406.2 Roads and Streets - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 432 Highway Transportation - 602.2 Mechanical Transmissions - 716 Telecommunication; Radar, Radio and Television - 716.3 Radio Systems and Equipment - 717 Optical Communication
DOI:10.6041/j.issn.1000-1298.2012.08.002
Database:Compendex
37. Accession number:20123815454275
Title:Self-wrapping net mechanism for round baler
Authors:Gao, Dongming1 ; Wang, Decheng1 ; Wang, Guanghui1 ; Sun, Jie1 ; Ma, Xiaogang1 ; Fu, Zuoli1
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:8
Issue date:August 2012
Publication year:2012
Pages:99-104
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 net self-wrapping mechanism for round baler was designed. The cam was used as transmission and control mechanism. The oscillating linkage was used as cam follower. The traction unit, wrapping unit and cutting unit were controlled for wrapping, recording and cutting. The wrapping performance experiment showed that this device could wrap dry bales of 80-120 cm width and silage round bales of 80-100 cm width. The most cost-effective operation was wrapping dry bale of 1.2 m width in three laps or wrapping silage round bale of 1.0 m width in four laps.
Number of references:23
Main heading:Cams
Controlled terms:Agricultural engineering - Mechanical engineering
Uncontrolled terms:Cam follower - Control mechanism - Cutting units - Linkage - Mechanism synthesis - Net - Performance experiment - Round baler
Classification code:601.3 Mechanisms - 608 Mechanical Engineering, General - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.6041/j.issn.1000-1298.2012.08.019
Database:Compendex
38. Accession number:20123815454296
Title:Dynamic load spectrum of tooth meshing process for gear transmission system
Authors:Li, Wei1 ; Liu, Ning1 ; Li, Ning1 ; Zheng, Luhan1
Author affiliation:1 School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Corresponding author:Li, 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:8
Issue date:August 2012
Publication year:2012
Pages:221-225
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 dynamic model of tooth meshing process for gear transmission system was proposed. The vibration differential equation by considering time-varying mesh stiffness, tooth face wear and errors was set up. The analysis method of dynamic load spectrum in gear transmission system was studied. The time domain, frequency domain and time-frequency domains of vibration characteristic were analyzed. These results were compared with numerical simulation and experimental results. It is shown that the proposed method consists with the numerical simulation and experimental method.
Number of references:13
Main heading:Power transmission
Controlled terms:Computer simulation - Differential equations - Dynamic loads - Dynamics - Time domain analysis - Transmissions
Uncontrolled terms:Analysis method - Experimental methods - Frequency domains - Gear transmission system - Load spectrum - Meshing process - Time domain - Time frequency domain - Time-varying mesh stiffness - Tooth meshing - Vibration characteristics - Vibration differential equations
Classification code:408.1 Structural Design, General - 602.2 Mechanical Transmissions - 723.5 Computer Applications - 921 Mathematics - 921.2 Calculus - 931.1 Mechanics
DOI:10.6041/j.issn.1000-1298.2012.08.040
Database:Compendex
39. Accession number:20123815454272
Title:Mechanized corn production systems based on combination of machinery and agronomy
Authors:Li, Jiyue1 ; Chen, Zhi2 ; Yang, Minli1 ; Huang, Yuxiang1
Author affiliation:1 China Research Center for Agricultural Mechanization Development, China Agricultural University, Beijing 100083, China
2 China National Machinery Industry Corporation, Beijing 100080, 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:8
Issue date:August 2012
Publication year:2012
Pages:83-88
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:From a perspective of agricultural machinery and agronomy combination, a method was proposed to analyze corn production mechanization system. Based on the analysis of background and conditions, an analysis framework of corn production mechanization system was put forward, which was focusing on technology integration, organizational integration and management integration. For technology integration, the available agricultural and agronomic technologies those can be combined in the process of production mechanization were analyzed. For organizational integration, the existing categories of service organizations of corn planting and agricultural machinery were summarized to analyze the integration idea and method of the combination of agricultural and agronomic technologies. For management integration, suggestions on resource management, task adjustment and process management were proposed to promote the corn production mechanization.
Number of references:21
Main heading:Agronomy
Controlled terms:Agricultural machinery - Mechanization - Technology
Uncontrolled terms:Corn - Corn planting - Corn production - Management integration - Process management - Resource management - Service organizations - System integration - Technology Integration
Classification code:601 Mechanical Design - 821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods - 901 Engineering Profession
DOI:10.6041/j.issn.1000-1298.2012.08.016
Database:Compendex
40. Accession number:20123815454298
Title:Grinding force of surface grinding hardening thin workpiece
Authors:Zhang, Ying1, 2 ; Ge, Peiqi1 ; Zhang, Lei1 ; Bi, Wenbo1 ; Jiang, Jingliang1
Author affiliation:1 School of Mechanical Engineering, Shandong University, Ji'nan 250061, China
2 Shandong Institute of Commerce and Technology, Ji'nan 250103, China
Corresponding author:Ge, 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:8
Issue date:August 2012
Publication year:2012
Pages:231-234 197
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 grinding force curve always varied as convex in the surface grinding hardening thin workpiece. The workpiece became concavity on the ground profile. Through coupled thermal-mechanical FEM analysis, the variation of grinding magnitude caused by the grinding deformation was the main reason for grinding force variation. The mode of workpiece clamping exerted tremendous influence on the deformation. The grinding force variation affected the heat flux into the workpiece and the grinding temperature. As a result, the grinding depth is non-uniform. Through the relationship among the grinding force, grinding temperature and the grinding thermal deformation, the grinding force can be divided into intervals and be iterated. The predictable grinding force curve has good agreement with the experiment result and is useful to analyze the grinding hardening depth distribution.
Number of references:10
Main heading:Grinding (machining)
Controlled terms:Deformation - Finite element method - Hardening - Heat flux
Uncontrolled terms:FEM analysis - Grinding force - Grinding temperatures - Hardening depth - Surface grinding - Thermal deformation - Work pieces
Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 537.1 Heat Treatment Processes - 606.2 Abrasive Devices and Processes - 641.2 Heat Transfer - 921.6 Numerical Methods
DOI:10.6041/j.issn.1000-1298.2012.08.042
Database:Compendex
41. Accession number:20123815454269
Title:Analysis and experiment on characteristic of piezoelectric vibration table for precision tray seeding device
Authors:Chen, Shufa1, 2 ; Zhang, Shiping1, 2 ; Li, Yaoming1
Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
2 College of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang 222005, 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:8
Issue date:August 2012
Publication year:2012
Pages:66-70
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 piezoelectricity vibration table was designed for seeding precisely the small size of seeds of some vegetables, trees, flowers, etc. The piezoelectric vibration driving system produced the mechanical micro-displacements with the applied electric field. The micro-displacements amplified by the amplification mechanism drove the seed dish vibrating and produced the boiling movement beneficial to suck seeds. The mathematical model of piezoelectric vibration was established. The static and dynamic state properties of the variation table were analyzed and experienced. The experimental results showed that the piezoelectric vibration system had a higher drive capacity with 90-110 V electric voltage. Vibration amplitude achieved 1.31 mm, vibration frequency was at 13-55 Hz and adjustable (resonant frequency of 25 Hz). The piezoelectric vibration table has better characteristics and higher seeding performances. It runs smoothly and meets the agronomic demands for precise tray seeding.
Number of references:12
Main heading:Vibrations (mechanical)
Controlled terms:Crystallography - Electric fields - Mathematical models - Natural frequencies - Piezoelectric ceramics - Piezoelectricity
Uncontrolled terms:Amplification mechanism - Converse piezoelectric effects - Drive capacity - Driving systems - Electric voltage - Piezoelectric variation - Piezoelectric vibration - Precise seeding - Static and dynamic - Vibration amplitude - Vibration frequency
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711.1 Electromagnetic Waves in Different Media - 812.1 Ceramics - 921 Mathematics - 931.1 Mechanics - 933.1 Crystalline Solids
DOI:10.6041/j.issn.1000-1298.2012.08.013
Database:Compendex
42. Accession number:20123815454264
Title:Experiment of mechanized planting mode and sowing rate for conservation tillage
Authors:Gao, Huanwen1 ; He, Ming2 ; Jiang, Jinlin3 ; Fang, Quanxiao4
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Qingdao Farm Machinery Bureau, Qingdao 266021, China
3 School of Electrical and Mechanical Engineering, Qingdao Agricultural University, Qingdao 266109, China
4 School of Agriculture and Plant Protection, Qingdao Agricultural University, Qingdao 266109, China
Corresponding author:Gao, 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:8
Issue date:August 2012
Publication year:2012
Pages:42-45 70
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:Mechanized planting mode and sowing rate was conducted in Qingdao from 2009 to 2011. The result showed that both of the two factors had significant influence on wheat yields. The wheat yields in small-wide-narrow mode (28 cm 12 cm) was the highest, which is 15%-30% higher than the large-wide-narrow mode and large-equal-row mode. When the sowing rate increased by 10%-20%, the yield increased by 2.2%-15%. The reason of yield increasing in small-wide-narrow mode and yield decreasing in large-wide-narrow mode was analyzed.
Number of references:11
Main heading:Soil conservation
Controlled terms:Experiments
Uncontrolled terms:Conservation tillage - Qingdao - Row spacing - Sow rate - Wheat yield
Classification code:821.3 Agricultural Methods - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2012.08.008
Database:Compendex
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