2009年第40卷第2期共收錄48篇
1.Accession number:20091211966158
Title:3D thermo-mechanical coupling temperature field simulation of drum brake
Authors:Zhao, Kaihui1 ; Wei, Lang1
Author affiliation:1 Department of Auto, Chang'an University, Xi'an 710064, China
Corresponding author:Zhao, K. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
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:By way of analyzing the frictional contact status of the drum brake and taking the temperature model of frictional coefficient into account, the thermo-mechanical coupling numerical simulation of the established 3D finite element model for the rear wheel's drum brake of commercial vehicle EQ1208 is carried out for the inertia brake operation. Then the simulation results of coupling transient temperature field of the drum brake are obtained. Though the A point temperature-rising results comparison between test and simulation, the variation trends of them are coordinate and the simulation results are accurate. It is indicated that the 3D thermo-mechanical finite element model are fit well. At last the main influence elements(vehicle velocity and road grade) of the brake temperature rising for the inertia brake operation are analyzed.
Number of references:9
Main heading:Brakes
Controlled terms:Finite element method - Friction - Heat exchangers - Heat transfer - Taxicabs - Thermomechanical treatment - Three dimensional - Trucks
Un Controlled terms:3-D finite element models - Commercial vehicles - Drum brake - Finite element models - Frictional coefficients - Frictional contacts - Numerical simulations - Point temperatures - Rear wheels - Road grades - Simulation - Simulation results - Temperature models - Temperature risings - Thermo mechanicals - Thermo-mechanical coupling - Transient heat transfer - Transient temperature fields - Vehicle velocities
Classification code:921.6 Numerical Methods - 902.1 Engineering Graphics - 723.5 Computer Applications - 663.1 Heavy Duty Motor Vehicles - 662.1 Automobiles - 931.1 Mechanics - 641.2 Heat Transfer - 602 Mechanical Drives and Transmissions - 537.1 Heat Treatment Processes - 535.2 Metal Forming - 432.2 Passenger Highway Transportation - 616.1 Heat Exchange Equipment and Components
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
2.Accession number:20091211966190
Title:3D synchronization imaging system for linear appraisal of dairy cow conformation
Authors:Yan, Zhen1 ; Qian, Dongping1 ; Wang, Dongping2 ; Wang, Wendi1
Author affiliation:1 Mechanical and Electronic Engineering College, Agricultural University of Hebei, Baoding 071001, China
2 Modern Science and Technology College, Agricultural University of Hebei,Baoding 071001, China
Corresponding author:Yan, Z.
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:175-179
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:3-D synchronization imaging system was developed to realize isochronous acquisition of 3-D images of dairy cow. Distributed control structure has been adopted to correspond orientation device and imaging equipment so that they could work according to schedule. Three CCD color video camera and one DH-QP300 4-channel color frame grabber were adopted to realize i sochronous grabbing of 3-D images of the dairy cow. LabVIEW software has been applied to transfer dynamic link libraries to control current frame grabber, single field grabbing mode was adopted to improve image quality. The experimental result showed that the time of images acquisition and linear appraisal is about 3 min, which is less than the standard time 5 min. And the images quality with clear edge and light noise could satisfy the requirements of continued feature extraction algorithm.
Number of references:6
Main heading:Three dimensional
Controlled terms:Charge coupled devices - Concurrency control - Distributed parameter control systems - Distributed parameter networks - Edge detection - Embedded systems - Feature extraction - Image quality - Imaging systems - Optoelectronic devices
Un Controlled terms:Dairy cow - Distributed control system - Linear appraisal of conformation traits - Sync hronization grabbing - Three-dimension image
Classification code:731.3 Specific Variables Control - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 731.1 Control Systems - 741.3 Optical Devices and Systems - 751.1 Acoustic Waves - 902.1 Engineering Graphics - 746 Imaging Techniques - 723.5 Computer Applications - 714.2 Semiconductor Devices and Integrated Circuits - 716 Telecommunication; Radar, Radio and Television - 717.2 Optical Communication Equipment - 703.1 Electric Networks - 722 Computer Systems and Equipment - 723.2 Data Processing and Image Processing - 723.3 Database Systems - 723 Computer Software, Data Handling and Applications
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
3.Accession number:20091211966157
Title:Engineering test method for motor vehicle yaw rate and sideslip angle based on GPS technology
Authors:Zhang, Xiaolong1, 2 ; Wu, Min2 ; Song, Jian1 ; Ma, Degui2
Author affiliation:1 State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
2 School of Engineering, Anhui Agricultural University, Hefei 230036, 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:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:27-31
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 engineering test system and its advanced precision verification system were designed for motor vehicle yaw rate and sideslip angle measurement based on the GPS technology, which were primarily utilized to the systematic winter and summer condition tests for the industrial research of the vehicle dynamic stability control system, i.e. DSC. Additionally, the main data processing methods were also put forth. The structures of the two systems and the test method were firstly introduced in detail, and then the test error of the vehicle azimuth angle, the yaw angle velocity and the sideslip angle were comparatively analyzed according to the same group of test data. The results showed that the positioning error of the test system is greater than the verification system's, but its test precision of the yaw rate and sideslip are in good agreement with the ones of the verification system, so the test system could be employed for the motor vehicle road way test.
Number of references:10
Main heading:Testing
Controlled terms:Angle measurement - Data processing - Engineering research - Global positioning system - Industrial research - Motors - Precision engineering - Roads and streets - Vehicles
Un Controlled terms:Azimuth angles - Data processing methods - Engineering tests - GPS - Gps technologies - Motor vehicles - Positioning errors - Road way test system - Sideslip angle - Test datum - Test errors - Test methods - Vehicle dynamic stability controls - Verification systems - Yaw angles - Yaw rate Classification code:943.3 Special Purpose Instruments - 716.3 Radio Systems and Equipment - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 761 Nanotechnology - 901.3 Engineering Research - 902.2 Codes and Standards - 912.1 Industrial Engineering - 943.2 Mechanical Variables Measurements - 714.2 Semiconductor Devices and Integrated Circuits - 406.2 Roads and Streets - 422.2 Test Methods - 423.2 Test Methods - 705.3 Electric Motors - 432 Highway Transportation - 632.4 Pneumatic Equipment and Machinery - 655.2.1 Communication Satellites - 632.2 Hydraulic Equipment and Machinery
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
4.Accession number:20091211966179
Title:Application and release characteristics of microencapsulated sulphite
Authors:Li, Xihong1 ; Xing, Yage1 ; Chen, Yang1 ; Cui, Hanyuan1
Author affiliation:1 Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
Corresponding author:Li, X. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:126-129
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 release of microencapsulated sulphite was evaluated at different types and quantities of wall materials and relative humidity. The release under different relative humidity was analyzed by Avrami's equation. The result showed that under RH 85% SO2 retention of microencapsultion used EC as wall material was 16.2% after 6d, and used other wall materials was 8.0%-13.8% after 24d; the effect was not obvious with different wall material quantity on release; the release rate of core material under RH 85% was 1.3 times of which under RH 75% and was 5.5-7.0 times of which under RH 43% when microencapsulation used the same wall material; the injury rate and the row rate were lower about 60% respectively and SO2 residue in grape lowered 40%-50% when microencapsulated sulphite preservative on storability for Muscate Hamburg than ordinary sulphite powder or sulphite table.
Number of references:6
Main heading:Materials
Controlled terms:Atmospheric humidity - Coremaking - Moisture
Un Controlled terms:Core materials - Injury rates - Microencapsulation - Relative humidities - Release characteristics - Release property - Release rates - Retention - Storability - Sulphite - Wall materials Classification code:443.1 Atmospheric Properties - 534.2 Foundry Practice - 801.4 Physical Chemistry - 951 Materials Science
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
5.Accession number:20091211966185
Title:Greenhouse control using geothermal water heating system
Authors:Lin, Dongliang1 ; Shen, Ende2 ; Zhang, Kanyu1 ; Yu, Lingwen1
Author affiliation:1 College of Mechanical and Electronic Engineering and Automation, Shanghai University, Shanghai 200072, China
2 Shanghai Dushi Green Engineering Co. Ltd., Shanghai 200040, China
Corresponding author:Lin, D. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:151-154 219
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:Mathematical model of greenhouses heating system by using geothermal water resources was developed and numerical analysis was determined based on the theory of heat transfer and control. The experimental method to determine the parameters of the greenhouses heating system mathematical model was introduced. In the greenhouses heating controller, which was designed and implemented with internal model control technology, the Smith predictor configuration was represented and combined with a PI controller. The approach to tune the parameters of the heating controller was defined. Results showed that the geothermal water resources is suitable for greenhouses heating and the heating controller performances, such as control accuracy and response time, matched current heating need of the greenhouses.
Number of references:8
Main heading:Geothermal water resources
Controlled terms:Computer simulation - Controllers - Greenhouses - Heating - Heating equipment - Mathematical models - Model predictive control - Proportional control systems - Water analysis
Un Controlled terms:Control accuracies - Current heating - Experimental methods - Geothermal waters - Heating control - Heating controllers - Heating systems - Internal model control - Pi controllers - Response time - Smith predictor
Classification code:731.1 Control Systems - 732 Control Devices - 732.1 Control Equipment - 731 Automatic Control Principles and Applications - 801 Chemistry - 913.2 Production Control - 921 Mathematics - 821.6 Farm Buildings and Other Structures - 723.5 Computer Applications - 444.2 Groundwater - 445.2 Water Analysis - 481.3.1 Geothermal Phenomena - 402.1 Industrial and Agricultural Buildings - 642.1 Process Heating - 643.1 Space Heating - 643.2 Space Heating Equipment and Components - 642.2 Industrial Furnaces and Components
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
6.Accession number:20091211966189
Title:Crack detection in eggs with multi-level wavelet transform and BP neural network
Authors:Peng, Hui1, 2 ; Wen, Youxian2 ; Wang, Qiaohua2 ; Wang, Shucai2 ; Wu, Lanlan2
Author affiliation:1 College of Basic Sciences, Huazhong Agricultural University, Wuhan 430070, China
2 College of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Peng, H. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:170-174
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A new method of crack detection in eggs was proposed with multi-level wavelet transform and texture analysis technology. First, G gray level image of all egg images were decomposed into approximation and detail sub-images at various levels by wavelet transform. Then, the feature vector which was composed of wavelet texture energy features, and the gray-level co-occurrence matrix features of the detail sub-images were analyzed and computed. Finally, with the most appropriate and effective eight parameters as inputs, the best BP neural network (8 input nodes, 20 hidden nodes, 2 output nodes) was employed to detect egg crack and classify eggs. The results of experiment proved that the correct discerning rate to detect eggs without crack and eggs with linear crack, meshy crack, point crack is respectively 95%, 90%, 95% and 80%, and the average correct rate to detect crack in eggs is 90%.
Number of references:14
Main heading:Crack detection
Controlled terms:Neural networks - Textures - Wavelet transforms
Un Controlled terms:BP neural network - Detection - Egg - Feature vectors - Gray-level co-occurrence matrices - Gray-level images - Hidden nodes - Input nodes - Multi levels - Sub-images - Texture analysis - Texture energies
Classification code:421 Strength of Building Materials; Mechanical Properties - 461.1 Biomedical Engineering - 723.4 Artificial Intelligence - 913.3.1 Inspection - 921.3 Mathematical Transformations - 933 Solid State Physics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
7.Accession number:20091211966177
Title:Effect of compressing conditions on radial force of alfalfa
Authors:Zhou, Xiaojie1 ; Wang, Chunguang1
Author affiliation:1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author:Zhou, X. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:115-118
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 radial compression force situations of alfalfa have great effect to the energy for compressing process, the manufacture of compressing equipments and the quality of alfalfa products. In order to find out the radial force situations, they were measured by using electric measurement technology under different initial densities and different compressing velocities. The rules of compressing density, initial density and compressing velocity influence on the radial compressing force were found out. At the same time, the alfalfa was relatively easy to curve under axial compressing force and radial compressing force. It is found that these factors are the essentials in the design and application of compressing equipments.
Number of references:14
Main heading:Velocity
Controlled terms:Electric variables measurement
Un Controlled terms:Alfalfa - Compressing velocity - Electric measurements - Initial densities - Radial compressing force - Radial compressions - Radial forces - To curves
Classification code:931.1 Mechanics - 942.2 Electric Variables Measurements
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
8.Accession number:20091211966164
Title:Effect of different textural soils on hydraulic characteristics of emitters under subsurface drip irrigation
Authors:Li, Gang1 ; Bai, Dan1 ; Wang, Xiaoyu1 ; Fu, Jia1
Author affiliation:1 Key Lab. of Northwest Water Resources and Environment Ecology, Xi'an University of Technology, Xi'an 710048, China
Corresponding author:Li, G. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:58-62
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 hydraulic characteristics and their differences of SDI emitter in various textural soils and to analyze effect of soil factors on emitter discharge, the experimental scheme was arranged in the clay, loam and sand soil based on uniform design with mixed levels of three factors that were respectively work pressure of emitter, soil bulk density and soil initial water content. The results show that the rules of emitter discharges in three textural soils are the same. The discharge of SDI emitter is slightly big at the beginning of irrigation, but it is reduced and tends to be constant after 1-2 min when work pressure remains invariable. At the same work pressure, the discharge of SDI emitter
is smaller about 5-20 percent than that of DI emitter. The work pressure is higher, and the discharge of SDI emitter is bigger, and the discharge of both SDI and DI are closer. Soil factors slightly restrict emitter discharge. The lighter textured soil it is, the bigger emitter discharge will be. But discharge reduction of emitter in three textural soils with increase of soil bulk density or soil initial water content is bigger in sandy soil, smaller in loam soil and smallest in clay soil.
Number of references:19
Main heading:Pressure effects
Controlled terms:Buoyancy - Clay - Clay minerals - Hydraulics - Subirrigation - Textures - Water analysis - Water content
Un Controlled terms:Clay soils - Emitter - Experimental schemes - Hydraulic characteristics - Loam soils - Mixed levels - Sand soils - Sandy soils - Soil bulk densities - Soil factors - Soil texture - Subsurface drip irrigation - Uniform designs - Work pressures
Classification code:933 Solid State Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.1 Mechanics - 821.3 Agricultural Methods - 812.1 Ceramics - 801 Chemistry - 632.1 Hydraulics - 631 Fluid Flow - 483.1 Soils and Soil Mechanics - 482.2 Minerals - 445.2 Water Analysis - 444 Water Resources - 414.2 Brick Materials
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
9.Accession number:20091211966173
Title:Design of an internal combustion type heating biomass gasifier
Authors:Zhu, Huabing1 ; Hu, Kongyuan2 ; Chen, Tianhu3 ; Shi, Ying3 ; Zhang, Xianlong4
Author affiliation:1 Industrial Training Center, Hefei University of Technology, Hefei 230009, China
2 School of Machinery and Automobile Engineering, Hefei University of Technology, Hefei 230009, China
3 School of Resources and Environment Engineering, Hefei University of Technology, Hefei 230009, China
4 School of Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author:Zhu, H. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:96-102
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:Many problems of gasifiers, such as the heat value produced by gas is very low and much tar remains in the gas during the process of operation. Focusing on these, a new internal combustion type heating gasifier was designed according to the principle of biomass gasification. This type is superior to the fixed bed gasifier and the fluidized bed gasifier, which already existed. Similar to the down draft fixed bed gasifier, the tar in the gas content is very low. By designing an internal heating system taking gas as the fuel, the quantity of the air entering the gasifier was reduced, and the quality of the gas was improved. This gasifier combines biomass gasification and catalytic cracking together so that there is no need to provide the heat source again for catalytic cracking. Inner rotary mechanism, snake pipe internal combustion heat exchanger device, atomization humidification equipment and so on make the gasifier perform well.
Number of references:24
Main heading:Gasification
Controlled terms:Atomization - Biological materials - Biomass - Cracking (chemical) - Fluid catalytic cracking - Fluid dynamics - Fluidization - Fluidized bed combustion - Fluidized beds - Gas generators - Gases - Heat engines - Heat exchangers - Heating - Jets - Pipe - Smoke - Tar - Thermochemistry
Un Controlled terms:Biomass gasifications - Biomass gasifier - Fixed beds - Fluidized bed gasifier - Gas contents - Gasifier - Gasifiers - Heat sources - Heat values - Inner rotary mechanism - Internal heating - Snake pipe internal combustion heat exchanger device
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 801.4 Physical Chemistry - 801.3 Colloid Chemistry - 643.1 Space Heating - 642.2 Industrial Furnaces and Components - 642.1 Process Heating - 641.1 Thermodynamics - 802.1 Chemical Plants and Equipment - 802.3 Chemical Operations - 804 Chemical Products Generally - 805.1.1 Biochemical Engineering - 821.5 Agricultural Wastes - 931.1 Mechanics - 802.2 Chemical Reactions - 631.1 Fluid Flow, General - 619.1 Pipe, Piping and Pipelines - 411 Bituminous Materials - 451.1 Air Pollution Sources - 461.2 Biological Materials and Tissue Engineering - 513 Petroleum Refining - 513.1 Petroleum Refining, General - 521.1 Fuel Combustion - 521.2 Combustors - 522 Gas Fuels - 524 Solid Fuels - 525.1 Energy Resources and Renewable Energy Issues - 612.1 Internal Combustion Engines, General - 616.1 Heat Exchange Equipment and Components
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
10.Accession number:20091211966197
Title:Design and application of the experimental model analysis system
Authors:Liu, Jun1 ; Gao, Jianli1 ; Xie, Wenlei1 ; Xu, Yi2 ; Meng, Haodong2 ; Miu, Yuechuan2
Author affiliation:1 School of Vehicle and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
2 Changchai Co. Ltd., Changzhou 213002, China
Corresponding author:Liu, J. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:209-213
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 experimental modal analysis system was introduced based on independent development software and NI hardware. The independent development software included the digital signal sampling and analyzing system (VTCL_DSP), experimental modal analysis system (VTCL_MDT) and the NI hardware included the NI-USB921 5A signal collector and a three-dimensional acceleration sensor were used in the research. The concept of measurement point response vector was given. Timing acquisition mode and variable time based on technology were adopted by the system to get the response signals and impact forces in the trigger process. A testing method of single-input and multiple-outputs has been applied in the experimental model research to get the complete mode shapes. The advantages of the method were discussed. Two application examples were also introduced: a modal analysis for power-train and a modal analysis for body-in-white. The results showed th at the system has the characters of high accuracy and high stability.
Number of references:7
Main heading:Modal analysis
Controlled terms:Damping - Soil structure interactions - Technology transfer - Three dimensional
Un Controlled terms:Acceleration sensors - Analyzing systems - Application examples - Body in whites - Digital signals - Experimental modal analysis - Experimental model analysis - High stabilities - Impact forces - Measurement points - Mode shapes - Power-train - Response signals - Test system - Testing methods - Timing acquisitions
Classification code:931.1 Mechanics - 921 Mathematics - 911.2 Industrial Economics - 902.1 Engineering Graphics - 901.4 Impact of Technology on Society - 723.5 Computer Applications - 483.2 Foundations
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
11.Accession number:20091211966178
Title:Effect of hydrocolloids on the gel properties of horse-mackerel surimi
Authors:Chen, Haihua1 ; Xue, Changhu1
Author affiliation:1 College of Science and Engineering, Ocean University of China, Qingdao 266003, China
Corresponding author:Chen, H. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:119-125
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:Effects of the kind and addition of hydrocolloids on the gelation properties of horse-mackerel surimi were studied by texture analysis. Its whiteness, water-holding capacity and microstructure were also measured and determined. The results showed that addition of curdlan, Tamarind gum, konjac, carrageenin, agar and alginate improved the gelation properties significantly, which formed uniformed and density three-dimensional network. Curdlan had the best beneficial effect on the gelation properties of the surimi, followed by Tamarind gum, konjac, carrageenin and CMC. Addition of guar gum and alginate had slight effect on the gelation properties of surimi, while addition of xanthan gum and pectin had negative effect on the gelation properties of surimi, which formed impacted network with huge holes.
Number of references:16
Main heading:Gelation
Controlled terms:Coagulation - Food additives - Gels - Microstructure - Polysaccharides - Three dimensional
Un Controlled terms:Beneficial effects - Curdlan - Gel properties - Gelation properties - Guar gums - Horse-makerel - Hydrocolloids - Surimi - Texture analysis - Three-dimensional networks - Water-holding capacities - Xanthan gums
Classification code:951 Materials Science - 933 Solid State Physics - 902.1 Engineering Graphics - 822.3 Food Products - 815.1.1 Organic Polymers - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 801.4 Physical Chemistry - 801.3 Colloid Chemistry - 723.5 Computer Applications - 531.2 Metallography
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
12.Accession number:20091211966198
Title:Finite element analysis of modified wide helical gears
Authors:Shang, Zhenguo1, 2 ; Wang, Hua3
Author affiliation:1 School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
2 School of Mechanical Engineering, Dalian Fisheries University, Dalian 116023, China
3 Centre of Experiment Teaching, Dongbei University of Finance and Economics, Dalian 116025, China
Corresponding author:Shang, Z. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:214-219
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 tooth contact and load distribution of modified helical gears were investigated and analyzed by means of finite element analysis (FEA). The face-contact model of gears was established according to the deformation compatibility condition and force equilibrium relationship. The proposed helical gear set comprised an involute pinion and a double crowned gear. Finite element models of the whole gear drive have been set up. Accordingly, a mesh-generation program was also developed for finite element contact analysis. The load distribution and contact stress were investigated by using the commercial FEA package, ANSYS. Furthermore, several examples were presented to demonstrate the influences of the gear's modification parameters on the load distribution and contact stress.
Number of references:9
Main heading:Helical gears
Controlled terms:Dentistry - Finite element method - Loads (forces) - Mesh generation
Un Controlled terms:Contact analysis - Contact models - Contact stress - Deformation compatibilities - Finite element models - Finite-element analysis - Force equilibriums - Gear drives - Involute pinions - Load distribution - Tooth contact analysis - Wide helical gear
Classification code:921.6 Numerical Methods - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 723.5 Computer Applications - 601.2 Machine Components - 462.3 Dental Equipment and Supplies - 461.6 Medicine and Pharmacology - 461.1 Biomedical Engineering - 421 Strength of Building Materials; Mechanical Properties - 408 Structural Design
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
13.Accession number:20091211966170
Title:Simulation of the rice motion model in axial threshing device
Authors:Tao, Guixiang1 ; Yi, Shujuan1
Author affiliation:1 College of Engineering, Heilongjiang August First Land Reclamation University, Daqing 163319, China
Corresponding author:Tao, G. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:84-86
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 fundamental of kinematic, a motion model of rice in the assembled plank-tooth and helical vanes axial flow threshing and separating device was established. Through computer simulating, the variable rule of grain tangential velocity, axial velocity, absolute velocity and time has been obtained. The results indicated that grain tangential velocity is greater than axial velocity, tangential velocity is the chief ingredient in the making of absolute velocity, through high-speed photography validating, the result indicated that the test according to those motion models agreed to the theory, and the analytic result laid a solid foundation for the development of the device.
Number of references:9
Main heading:High speed photography
Controlled terms:Agriculture - Computational fluid dynamics - Grain (agricultural product) - Harvesters - High speed cameras - Motion estimation - Velocity
Un Controlled terms:Axial device - Axial velocities - Combine harvester - Motion - Motion models - Simulation - Tangential velocities
Classification code:931.1 Mechanics - 921.6 Numerical Methods - 821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 742.2 Photographic Equipment - 742.1 Photography - 723.5 Computer Applications - 716.1 Information Theory and Signal Processing - 631.1.2 Gas Dynamics - 631.1.1 Liquid Dynamics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
14.Accession number:20091211966199
Title:Stability and nonlinear response of drilling shaft system in deep slot hole drilling
Authors:Kong, Lingfei1 ; Li, Yan1 ; Lu, Yanjun1 ; Li, Dexin1 ; Li, Shujuan1
Author affiliation:1 School of Mechanical and Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, China
Corresponding author:Kong, L. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:220-226
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 effects of fluctuation of cutting force, the mass eccentricity and the hydrodynamic force of cutting fluid can be taken into consideration in the model of drilling shaft system. To solve the hydrodynamic force of cutting fluid, the variational form of Reynolds equation in hydrodynamic fluid was revised continuously to satisfy certain constraint conditions by variational constraint approach. By means of this approach, a perturbed equation could be obtained directly on the finite element equation. Consequently, nonlinear hydrodynamic force and their Jacobian were calculated simultaneously, and compatible accuracy has been obtained without increasing computational cost. In the stability analysis, the period of the periodic orbit of the nonlinear drilling shaft system was drawn into the governing equation of the system explicitly by changing the time scale, and was taken part into the iteration procedure of the shooting method as a parameter. Then the periodic orbit and its period of the drilling shaft system were determined rapidly. Combining theories with experiment, the local stability and bifurcation behaviors of periodic motions with the change of the drilling shaft design parameter value were obtained by the Floquet theory.
Number of references:16
Main heading:System stability
Controlled terms:Bifurcation (mathematics) - Cutting fluids - Drilling - Equations of motion - Fluid dynamics - Hydrodynamics - Nonlinear equations - Orbits - Time varying systems
Un Controlled terms:Bifurcation - Computational costs - Constraint conditions - Cutting forces - Drilling shaft - Finite element equations - Floquet theories - Governing equations - Hydrodynamic fluids - Hydrodynamic forces - Iteration procedures - Jacobians - Local stabilities - Non-linear response - Nonlinear dynamics - Nonlinear hydrodynamic forces - Periodic motions - Periodic orbits - Perturbed equations - Shooting methods - Slot hole - Slot hole drillings - Stability analysis - Time-scale - Variational forms
Classification code:961 Systems Science - 731.1 Control Systems - 731.4 System Stability - 921 Mathematics - 921.1 Algebra - 921.2 Calculus - 931.1 Mechanics - 655.2 Satellites - 631.2 Hydrodynamics - 631.1.1 Liquid Dynamics - 631.1 Fluid Flow, General - 607.1 Lubricants - 604.2 Machining Operations - 654.1 Rockets and Missiles
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
15.Accession number:20091211966155
Title:Fault mode analysis and control technology of automotive EPS system
Authors:Zhao, Jingbo1 ; Chen, Long1 ; Jiang, Haobin1 ; Liu, Haimei2
Author affiliation:1 School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
2 School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Zhao, J. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:18-21
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 structure and working principles of automotive EPS system was introduced and the fault mode and corresponding control technologies were designed. The fault mode of EPS had hardware faults and software faults. For hardware faults, the methods of modular design of EPS controller, dual CPUs parallel working, complementary signals output of torque sensor, parallel working of MOS transistors, fault indicator and code display were adapted. For software faults, the method of software redundancy technology including N version procedures, resumption block technology and exceptions technology were adapted. The design of EPS fault control technologies can effectively improve the safe and reliable performance of EPS and the automotive handling safety.
Number of references:6
Main heading:Technology
Controlled terms:Automobile steering equipment - Electric power measurement - Force measurement - Quality assurance - Redundancy - Safe handling - Steering - Transistor transistor logic circuits
Un Controlled terms:Control technologies - Electric power steering - Eps systems - Fault - Fault indicators - Fault modes - Hardware faults - Modular designs - Mos transistors - Redundancy technologies - Reliable performance - Software faults - Torque sensors - Working principles
Classification code:901 Engineering Profession - 903 Information Science - 913.3 Quality Assurance and Control - 914 Safety Engineering - 914.1 Accidents and Accident Prevention - 942.2 Electric Variables Measurements - 943.2 Mechanical Variables Measurements - 731.1 Control Systems - 662.4 Automobile and Smaller Vehicle Components - 663.2 Heavy Duty Motor Vehicle Components - 671.2 Ship Equipment - 691.2 Materials Handling Methods - 714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 721.3 Computer Circuits
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
16.Accession number:20091211966184
Title:Performance analysis on ground source heat pump cooling system based on exergy research
Authors:Chai, Lilong1 ; Ma, Chengwei1 ; Yuan, Xiaoyan1 ; Zhang, Yi1 ; Yu, Fei2
Author affiliation:1 College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2 Beijing Zhongke High-Technology Development Co. Ltd., Beijing 100080, China
Corresponding author:Chai, L. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:146-150
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 Exergy analytical method was adopted to analyze the performance of groundwater source heat pump (GSHP) system by applying Exergy destruction Edest and Exergy efficiency Ε. Related Exergy analytical models have been put forward according to the cooling experiment carried out in an office building and a Chinese solar greenhouse in the summertime of 2007. Analytical results showed that the evaporator has a higher Exergy efficiency than other parts of the system, which reached 92.5%. However, the Exergy efficiency of condenser and total GSHP system was not very satisfying. Meanwhile, the coefficient of performance of GSHP unit and total system has reached 5.90 and 3.56 respectively.
Number of references:22
Main heading:Exergy
Controlled terms:Cooling - Cooling systems - Greenhouses - Groundwater - Heat pump systems - Hydrogeology - Office buildings - Pumps
Un Controlled terms:Analytical methods - Analytical models - Analytical results - Coefficient of performance (COP) - Exergy destructions - Exergy efficiencies - Ground source heat pump - Ground-water source heat pumps - Performance analysis - Solar greenhouse
Classification code:802.3 Chemical Operations - 641.2 Heat Transfer - 641.1 Thermodynamics - 618.2 Pumps - 821.6 Farm Buildings and Other Structures - 616.1 Heat Exchange Equipment and Components - 444.2 Groundwater - 402.2 Public Buildings - 402.1 Industrial and Agricultural Buildings - 481.1 Geology
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
17.Accession number:20091211966175
Title:Finite element analysis of honeycomb biomass fuel press briquetting
Authors:Sun, Qing1 ; Bai, Hongchun1 ; Zhao, Xu1 ; Yi, Weiming2
Author affiliation:1 Engineering College, Shenyang Agricultural University, Shenyang 110161, China
2 School of Light Industry and Agriculture Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author:Sun, Q. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:107-109
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:Based on the biomass properties of compressing and the pressed product of honeycomb biomass fuel with the characters of hardness, the process of biomass pressing can be regarded as nonlinear finite element problem. The mechanics model was created by using ANSYS software to analysis the hydrostatic pressure during the process of biomass briquetting, the equivalent strain and the relation between load and deformation, the way of using more times to add filler and compress to enhance the durability was put forward, and by applying the method of slowly compressing, materials' degree of softness was improved so as to prevent the honeycomb biomass fuel appearing crack.
Number of references:4
Main heading:Finite element method
Controlled terms:Biological materials - Biomass - Briquetting - Extrusion - Fuels - Honeycomb structures - Hydrostatic pressure
Un Controlled terms:ANSYS softwares - Biomass energy - Equivalent strains - Finite element analysis - Honeycomb biomass fuel - Mechanics models - Non-linear finite elements
Classification code:921.6 Numerical Methods - 821.5 Agricultural Wastes - 816.1 Processing of Plastics and Other Polymers - 805.1.1 Biochemical Engineering - 802.3 Chemical Operations - 631.1.1 Liquid Dynamics - 535.2.2 Metal Forming Practice - 525.1 Energy Resources and Renewable Energy Issues - 524 Solid Fuels - 523 Liquid Fuels - 522 Gas Fuels - 461.2 Biological Materials and Tissue Engineering - 408.2 Structural Members and Shapes
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
18.Accession number:20091211966154
Title:Analysis on the effect of controllable valve parameters on hydro-pneumatic suspension damping characteristics
Authors:Yang, Jie1, 2 ; Chen, Sizhong1 ; Wu, Zhicheng1 ; Liang, Weidong2 ; Liu, Zhaodu1
Author affiliation:1 School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
2 Department of Petty Officer, Academy of Equipment Command and Technology, Beijing 102249, China
Corresponding author:Yang, J. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:12-17
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 kind of hydro-pneumatic suspension with controllable damping was designed. A complex nonlinear mathematic damping model of hydro-pneumatic suspensions was set up on the basis of comprehensive analysis of its working principle and structure. The effects of the controllable valve structural parameters on the hydro-pneumatic suspension damping characteristics were mainly discussed by using software Matlab/Simulink. The comparison of simulation results and bench test showed that the mathematic model is authentic, and the perfect damping characteristics of the hydro-pneumatic suspension could be obtained through rational selection of the valve structural parameters, such as the size of the parallel or series orifices, the maximum opening capacity or the spring pre-compression of the one-way valve.
Number of references:6
Main heading:Damping
Controlled terms:Computer software - Mathematical models - Pneumatic control - Suspensions (fluids) - Vehicle suspensions
Un Controlled terms:Bench tests - Comprehensive analysis - Controllable damping - Damping characteristics - Damping models - Hydro-pneumatic suspensions - Influencing factor - Mathematic models - MATLAB /simulink - Pre compressions - Simulation results - Structural parameters - Working principles
Classification code:921 Mathematics - 804 Chemical Products Generally - 801.3 Colloid Chemistry - 931.1 Mechanics - 731.1 Control Systems - 632.3 Pneumatics - 601.2 Machine Components - 723 Computer Software, Data Handling and Applications
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
19.Accession number:20091211966186
Title:Fault diagnosis of the greenhouse WSN based on the time series and space series analysis
Authors:Zhang, Rongbiao1 ; Bai, Bin1 ; Li, Kewei1 ; Xiang, Meijing1
Author affiliation:1 School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Zhang, R. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:155-158 179
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:Because of the strong time dependence and spatial correlation of the data collected by the greenhouse wireless sensor networks (WSN), according to the basic structure of the greenhouse WSN, the mathematic model of fault diagnosis based on the time series and space series analysis was set up respectively through preprocess sample information of the time series and space series on the basis of analyzing the raw data of WSN. According to this, the working condition of the sensor node was analyzed and the fault diagnosis algorithm of the greenhouse WSN was given. The research result showed that the method of fault diagnosis could find out the anomaly of greenhouse WSN and judge the fault node, thus enhance the reliability of WSN.
Number of references:13
Main heading:Time series
Controlled terms:Greenhouses - Learning algorithms - Sensor networks - Telecommunication equipment - Time series analysis - Wireless sensor networks
Un Controlled terms:Basic structures - Fault diagnosis - Mathematic models - Preprocess - Research results - Sample informations - Series analysis - Space series - Spatial correlations - Time dependences - Working conditions Classification code:821.6 Farm Buildings and Other Structures - 732 Control Devices - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722.4 Digital Computers and Systems - 922.2 Mathematical Statistics - 722.3 Data Communication, Equipment and Techniques - 717 Optical Communication - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 402.1 Industrial and Agricultural Buildings - 718 Telephone Systems and Related Technologies; Line Communications
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
20.Accession number:20091211966192
Title:Agent-based intelligent algorithm for uniform parallel machine scheduling problem
Authors:Li, Kai1 ; Zuo, Chunrong1 ; Ren, Minglun1
Author affiliation:1 School of Management, Hefei University of Technology, Hefei 230009, China
Corresponding author:Li, K. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:184-189
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A uniform parallel machine scheduling problem with release dates to minimize makespan was considered. This problem is at least NP-hard. Algorithm ABH, which was an intelligent scheduling algorithm based on Agent technology in order to realize the manufacturing scheduling process robotized by means of the intelligence of machine, has been developed for the problem. Semantic description of two kinds to the Agent was given. The results and analysis of quite extensive computational experiments were reported and discussed, and ABH algorithm is superior to the existing algorithms, and its average relative error is less than 0.084%.
Number of references:11
Main heading:Scheduling algorithms
Controlled terms:Information theory - Machinery - Parallel algorithms - Scheduling
Un Controlled terms:Agent technologies - Agent-based - Average relative errors - Computational experiments - Intelligent algorithms - Intelligent scheduling - Intelligent scheduling algorithms - Makespan - Manufacturing scheduling - Np-hard - Release dates - Semantic descriptions - Uniform parallel machine scheduling - Uniform parallel machines
Classification code:601 Mechanical Design - 716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 912.2 Management - 921 Mathematics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
21.Accession number:20091211966168
Title:Effect of distributing valve's volumetric efficiency on working performance of three cylinders internal combustion water pump
Authors:Wang, Weichao1 ; Zhang, Tiezhu2 ; Zhang, Hongxin2
Author affiliation:1 College of Mechano-Electronic Engineering, Qingdao University, Qingdao 266071, China
2 Electronic Technology Institute of Vehicle, Qingdao University, Qingdao 266071, China
Corresponding author:Wang, W. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:76-80
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 the compressibility and continuity characteristics of liquid into account, the dynamic model of distributing valves was constructed, and the volumetric efficiency character was studied. When the working frequency was approximately to the round number times of the natural frequency of valves, the efficiency was seriously low. The nominal rotational speed of the prototype was close to the speed where the volumetric efficiency was the lowest, which was harmful to the normal work of ICP. The change of volumetric efficiency has great influence on the fuel-consumption, output flow, effective thermal efficiency, effective power and so on, but little on the output pressure.
Number of references:13
Main heading:Valves (mechanical)
Controlled terms:Combustion - Light measurement - Pumps - Smoke - Thermochemistry
Un Controlled terms:Distributing valve - Internal combustion pump - Internal combustion water pumps - Output flows - Rotational speed - Thermal efficiencies - Volumetric efficiency - Working frequencies - Working performance
Classification code:941.4 Optical Variables Measurements - 804 Chemical Products Generally - 801.4 Physical Chemistry - 801.3 Colloid Chemistry - 641.1 Thermodynamics - 619.2.1 Tank Accessories - 619.1.1 Pipe Accessories - 618.2 Pumps - 601.2 Machine Components - 521.1 Fuel Combustion - 451.1 Air Pollution Sources
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
22.Accession number:20091211966167
Title:Performance on the orifice energy dissipation and decompression equipment of the step and spiral-orifice style
Authors:Yan, Yaoxing1 ; Sun, Xihuan1 ; Yan, Qingfu1
Author affiliation:1 College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Corresponding author:Yan, Y. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:71-75
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:Agricultural water saving and irrigation water supply system, due to the different irrigate style, needs different water supply pressure. By installing energy dissipation and decompression equipment at some branch line of water supply, it could meet the pressure demand of different water saving and irrigation water supply methods. The energy dissipation equipment proposed made use of the orifice twisting to form the step and spiral-orifice which make the flow twist compulsively. As the flow twisted large angle in short distance instantly to form higher intensity spiral flow, the ratio of energy dissipation and decompression was higher, it could also be regulated in large range, so it could be used in agricultural water saving and irrigation water supply system and other similar piping system that needs energy dissipation.
Number of references:6
Main heading:Water supply
Controlled terms:Competition - Electron energy loss spectroscopy - Energy dissipation - Energy dissipators - Equipment - Irrigation - Orifices - Water conservation - Water piping systems - Water supply systems
Un Controlled terms:Agricultural waters - Branch lines - Irrigation water supplies - Performance - Short distances - Spiral flows - Step and spiral-orifice - Supply pressures - Water savings
Classification code:801 Chemistry - 802.1 Chemical Plants and Equipment - 821.3 Agricultural Methods - 714.2 Semiconductor Devices and Integrated Circuits - 901 Engineering Profession - 931.3 Atomic and Molecular Physics - 932.2 Nuclear Physics - 911.2 Industrial Economics - 643.2 Space Heating Equipment and Components - 444 Water Resources - 446.1 Water Supply Systems - 525.4 Energy Losses (industrial and residential) - 403.1 Urban Planning and Development - 616.1 Heat Exchange Equipment and Components - 631.1 Fluid Flow, General - 641.2 Heat Transfer - 619.1 Pipe, Piping and Pipelines
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
23.Accession number:20091211966183
Title:Application of CMAC controller in starch production-line liquid-level based on xPC environment
Authors:Shen, Gang1 ; He, Jingfeng1 ; Cong, Dacheng1 ; Bai, Xiaodong1 ; Tang, Hui2 ; Han, Junwei1
Author affiliation:1 School of Electromechanical Engineering, Harbin Institute of Technology, Harbin 150001, China
2 School of Engineering Technology, Changchun Vocational Institute of Technology, Changchun 130033, China
Corresponding author:Shen, G. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:142-145 95
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:Self-adaptive CMAC NN was used to adjust the liquid-level of the starch production-line after analyzing and comparing the principle of tradition PID and self-adaptive CMAC NN and a mathematical model about one of liquid-level loop of starch production-line was built, then, a controller was designed and simulated. The simulation results showed that self-adaptive CMAC NN is better than tradition PID on the respect of control effect and its robustnes is higher than tradition PID. Real-time level process control system was devised on the basis of xPC Target software environment of Matlab. The rapid prototyping control system could be done easily and the investment is cheap. The period of development could be shortened. This system could realize the accuracy process control.
Number of references:9
Main heading:Process control
Controlled terms:Computer software - Concurrency control - Concurrent engineering - Job analysis - Level control - Liquids - MATLAB - Proportional control systems - Rapid prototyping - Starch
Un Controlled terms:CMAC controllers - CMAC NN - Liquid-level control - Self-adaptive - Simulation results - Software environments - Starch production-line - Time levels - xPC targets
Classification code:815.1.1 Organic Polymers - 822.3 Food Products - 912 Industrial Engineering and Management - 913.1 Production Engineering - 913.6 Product Development; Concurrent Engineering - 921 Mathematics - 931.2 Physical Properties of Gases, Liquids and Solids - 804.1 Organic Compounds - 723 Computer Software, Data Handling and Applications - 723.1.1 Computer Programming Languages - 723.3 Database Systems - 723.5 Computer Applications - 731 Automatic Control Principles and Applications - 731.1 Control Systems - 731.3 Specific Variables Control
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
24.Accession number:20091211966166
Title:Finite element method for hydraulic design of drip irrigation lateral lines with virtual emitter system
Authors:Zhang, Zhixin1 ; Wang, Jiandong2 ; Xu, Suojun3 ; Li, Shuqin1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, China Agricultural University, Beijing 100083, China
2 Irrigation and Drainage Department, China Institute of Water Resources and Hydropower Research, Beijing 100044, China
3 Beijing Water Technology Center, Beijing 100073, China
Corresponding author:Zhang, Z. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:68-70 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:The hydraulic performance of lateral lines plays an important role in the drip irrigation system design. The virtual emitters and finite element method were used to compute the head loss and the way to reduce computational errors was suggested by selecting certain amounts of elements in order to meet the need of drip irrigation design. Moreover, virtual emitter with finite element method could dramatically reduce element number needed so as to reduce computational efforts and storage demands by 95 and 98 percent for virtual emitter and virtual emitter average head loss.
Number of references:6
Main heading:Finite element method
Controlled terms:Hydraulics - Irrigation
Un Controlled terms:Drip irrigation - Finite element - Hydraulic calculation - Hydraulic head loss - Lateral line - Virtual emitter
Classification code:632.1 Hydraulics - 821.3 Agricultural Methods - 921.6 Numerical Methods
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
25.Accession number:20091211966156
Title:Parameterization design architecture of cascade in a hydrodynamic torque converter based on spline fit curve
Authors:Wei, Wei1 ; Yan, Qingdong1
Author affiliation:1 National Key Lab. of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Wei, W. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:22-26
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:Parameterization design method of cascade system of a hydrodynamic torque converter was overviewed, spline fit curve method was selected to construct based on least-parameter principle. With the analysis and comparison of several typical vane profiles, and parameter design method for torque converter was presented combined with width-variable circulatory circle design method. An instance was realized by UG/OPEN API. Based on all of above researches, parameter design architecture of cascade system in a torque converter was summarized and put forward, and flexible and convenient design model for 3-D optimum design and manufact ure was provided.
Number of references:24
Main heading:Architectural design
Controlled terms:Design - Fluid dynamics - Hydraulic torque converters - Hydrodynamics - Parameterization - Splines - Three dimensional - Torque
Un Controlled terms:Cascade system - Curve methods - D-optimum designs - Design architecture - Design methods - Design models - Parameter design methods - Parameter designs - Ug/open - Vane profiles
Classification code:631.2 Hydrodynamics - 632.2 Hydraulic Equipment and Machinery - 723.5 Computer Applications - 902.1 Engineering Graphics - 921 Mathematics - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 631.1.1 Liquid Dynamics - 402 Buildings and Towers - 408 Structural Design - 408.1 Structural Design, General - 421 Strength of Building Materials; Mechanical Properties - 601.2 Machine Components - 602 Mechanical Drives and Transmissions - 631.1 Fluid Flow, General
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
26.Accession number:20091211966187
Title:Local environment recognition based on the data fusion of LMS and vision
Authors:Zhang, Bo1 ; Chen, Huiyan1
Author affiliation:1 School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Zhang, B. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:159-163 169
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:In order to guide the UGV detection, a new method of local environment recognition based on the data fusion of LMS and vision were given and tested. Firstly the structure of LMS system and vision system has been modeled separately, and then the algorithm was showed to describe the data processing procedure. The grid method has been used to classify obstacle points and evaluate their cost. Considering the motor vehicle trafficability, an upgraded Dempster-Shafer criterion was used to revise the decision-making of driving. The trafficability was evaluated by reliability matrix. At last, the experiment has been done to validate the whole system.
Number of references:6
Main heading:Intelligent vehicle highway systems
Controlled terms:Data fusion - Information fusion - Motors - Vehicles
Un Controlled terms:Dempster-Shafer criterion - LMS - Local environment recognition - Motor vehicle trafficability - UGV
Classification code:723.5 Computer Applications - 723.2 Data Processing and Image Processing - 705.3 Electric Motors - 903.1 Information Sources and Analysis - 632.4 Pneumatic Equipment and Machinery - 432 Highway Transportation - 406.1 Highway Systems - 632.2 Hydraulic Equipment and Machinery
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
27.Accession number:20091211966172
Title:Prediction model of agricultural mechanization level in china based on GM(1, 1)
Authors:Zhang, Rui1 ; Gao, Huanwen1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Zhang, R. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:91-95
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 GM(1, 1) model for quantificational predicting the mechanization level in China was established by integrated gray predicting theory with datum smoothness based on statistical data from the year 1986 to 2005. The GM(1, 1) model fitted well by verified. And prediction precision is available by predict the mechanization level of 2006. A prediction of the mechanization levels from the year 2007 to 2020 was also conducted by the GM(1, 1) model. The result showed that the integrated level of mechanically would reach to 68 percent in the year of 2020. And the model showed better prediction compared with qualitative analysis and other results of prediction.
Number of references:13
Main heading:Machinery
Controlled terms:Granular materials - Mechanization
Un Controlled terms:Agricultural mechanization - GM (1 , 1) - GM(1, 1) model - Prediction - Prediction models - Prediction precision - Qualitative analysis - Statistical datum
Classification code:601 Mechanical Design - 951 Materials Science
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
28.Accession number:20091211966180
Title:Technology optimization of total flavonoids extraction from cyclocarya paliurus leaves by ultrasonic assistance
Authors:Feng, Zongshuai1 ; Wu, Caie1 ; Fang, Shengzuo1 ; Yang, Wanxia1 ; Yang, Jianting1 ; Li, Tingting1
Author affiliation:1 College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
Corresponding author:Feng, Z. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:130-134 75
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 supersonic assistance extraction processing of total flavonoids from Cyclocarya paliurus leaves was studied. By means of orthogonally rotational combination design with four factors (ratio of solvent to dry Cyclocarya paliurus leaves, extraction time, ultrasonic power and ethanol concentration) as influence factors, the optimal extraction technology was performed. The results indicated that the effect of factors on the extraction was in the order as follows, extraction time, the most important one, then ethanol concentration, ratio of solvent to dry Cyclocarya paliurus leaves, and ultrasonic power as the last one. The optimum conditions were ratio of solvent to dry Cyclocarya paliurus leaves 55 mL/g, extraction time 34 min, ultrasonic power 720 W, and ethanol concentration 60 percent. With the optimized technology, the content of total flavonoids in the final product is 86.63 percent. In conclusion, the technology is relatively stable and reliable, and consistent with the validate experiment result.
Number of references:9
Main heading:Organic solvents
Controlled terms:Ethanol - Solvents - Technology - Ultrasonics
Un Controlled terms:Combination designs - Cyclocarya paliurus leaves - Effect of factors - Ethanol concentrations - Extraction processing - Extraction technologies - Extraction time - Influence factors - Optimum conditions - Technology optimizations - Total flavonoids - Ultrasonic assistances - Ultrasonic power
Classification code:523 Liquid Fuels - 753.1 Ultrasonic Waves - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds - 813.2 Coating Materials - 901 Engineering Profession
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
29.Accession number:20091211966171
Title:Dynamic analysis of a vibrating conveyer with inclination in consideration of material combination coefficient
Authors:Xin, Lili1 ; Liang, Jihui2 ; Wen, Bangchun1
Author affiliation:1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
2 School of Automobile and Traffic Engineering, Shenyang University of Technology, Shenyang 110168, China
Corresponding author:Xin, L. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:87-90
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:Mechanical model of vibration conveyer with inclination was built, and the model which was based on nonlinear force of material with material combination coefficient was solved and analyzed by analytical method. The results showed that material combination coefficient in inclined face is less than that without inclined face, and material combination coefficient decreased faster than damping coefficient when amplitude increased. Moreover, material combination coefficient is lower when rotational speed increased. The same kind of vibratory machines which were based on the analysis of results obtained better dynamic performance and has longer service life.
Number of references:9
Main heading:Materials
Controlled terms:Conveyors - Damping - Dynamic analysis - Vibrations (mechanical) - Vibratory finishing
Un Controlled terms:Analytical methods - Damping coefficients - Dynamic performance - Material combination coefficient - Material damping coefficient - Mechanical models - Non-linear forces - Rotational speed - Vibrating conveyer - Vibratory Machines
Classification code:931.1 Mechanics - 753.3 Ultrasonic Applications - 692.1 Conveyors - 951 Materials Science - 606.2 Abrasive Devices and Processes - 539 Metals Corrosion and Protection; Metal Plating - 422.2 Test Methods - 604.2 Machining Operations
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
30.Accession number:20091211966163
Title:Hydraulic analysis model in a CAD system for the design of drip irrigation
Authors:Qiu, Xiangyu1 ; Wang, Fujun1
Author affiliation:1 College of Water Conservancy and Civil Engineer, China Agricultural University, Beijing 100083, China
Corresponding author:Qiu, X. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:54-57 11
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Based on the extended application of AutoCAD software, a new computer model was developed for analyzing the pipe network hydraulic characteristics in drip irrigation system. Through analyzing the pipe network validity and hydraulics analytical theory of forward step method, the network graphics were effective coupled with the hydraulic calculation. Using this model, the hydraulic calculation results could feedback to the network graphics in real-time, and achieve a reasonable optimization design of pipe network. A typical application example of the model for drip irrigation was presented; the results showed that the calculated deviation of head and flow rate were reasonable; the identification of the pipe network validity and hydraulic calculation process could be completed within 10 min.
Number of references:14
Main heading:Computer aided network analysis
Controlled terms:Computational methods - Computer aided design - Computer networks - Hydraulics - Irrigation - Pipe
Un Controlled terms:Analytical theories - AutoCAD softwares - Cad systems - Computer models - Drip irrigation - Drip irrigation systems - Forward step method - Hydraulic analysis - Hydraulic calculations - Hydraulic characteristics - Network graphics - Optimization designs - Pipe network layout - Typical applications
Classification code:821.3 Agricultural Methods - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 921 Mathematics - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 703.1.1 Electric Network Analysis - 632.1 Hydraulics - 619.1 Pipe, Piping and Pipelines - 717 Optical Communication
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
31.Accession number:20091211966194
Title:Path synthesis of geared five-bar crank-slider mechanisms
Authors:Zhang, Yanbin1 ; Wu, Xin2 ; Liu, Hongzhao3 ; Liu, Huiyang4
Author affiliation:1 School of Architecture Engineering, He'nan University of Science and Technology, Luoyang 471003, China
2 School of Mechatronics Engineering, He'nan University of Science and Technology, Luoyang 471003, China
3 Faculty of Mechanical Precision Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, China
4 Luoyang Science and Technology Bureau of He'nan Province, Luoyang 471023, 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:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:195-198 208
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 dimensional constraint conditions of a kind of geared five-bar crank-slider mechanism (GFBCSM) were analyzed. Mathematic model of coupler path has been established based on complex vector theory and Fourier series theory. The mathematic equations for calculating actual dimensions of mechanism, coupler's point position and mechanism installation parameters were derived. Several numerical atlas databases of harmonic characteristics of coupler rotation-angle operators have been set up for transmission ratio i=-1, ±1/2, ±1/3 between the crank and the coupler. Dimensional synthesis of coupler path of GFBCSM has been realized by using the numerical atlas method, and the given example showed that the method is efficient and feasible.
Number of references:10
Main heading:Slideways
Controlled terms:Fourier analysis - Fourier series - Harmonic analysis - Mathematical operators
Un Controlled terms:Complex vectors - Constraint conditions - Dimensional synthesis - Geared five-bar crank-slider mechanism - Harmonic characteristics - Mathematic models - Numerical atlas - Path synthesis - Transmission ratios
Classification code:921.6 Numerical Methods - 921.3 Mathematical Transformations - 921 Mathematics - 752 Sound Devices, Equipment and Systems - 751 Acoustics, Noise. Sound - 603.2 Machine Tool Accessories - 482.1 Mineralogical Techniques
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
32.Accession number:20091211966193
Title:Qeneral 6R robot inverse solution based on double quaternion and groebner base
Authors:Ni, Zhensong1 ; Liao, Qizheng1 ; Wei, Shimin1 ; Li, Ruihua1 ; Qiao, Shuguang1
Author affiliation:1 School of Automation, Beijing University of Posts and Telecommunications, Beijing 100876, China
Corresponding author:Ni, Z. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:190-194 213
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 new algorithm for the position inverse solution of the introduced general 6R robot was introduced. It is the homogeneous transformation matrix that translated to the double quaternions form, and on this basis, the series 6R robot kinematics equation with double quaternions form was established. And five variables were eliminated by the elimination of linear and two-time applications lexicographic Groebner base, a 16th degree equation contained a variable has been obtained. This method did not have any roots, it is a new algorithm that solves and presents the space of arbitrary size 6R robot modeling. Groebner base which used computer algebra system rational calculation was requested, and the current solution is not yet a high speed, it needs further improvement.
Number of references:15
Main heading:Robotics
Controlled terms:Algebra - Inverse kinematics - Robots
Un Controlled terms:6R robot - Computer algebra systems - Double quaternions - General 6R robots - Groebner base - High-speed - Homogeneous transformation matrixes - Inverse kinematics analysis - Inverse solutions - Robot kinematics - Robot modeling
Classification code:731.5 Robotics - 731.6 Robot Applications - 921.1 Algebra - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
33.Accession number:20091211966162
Title:Flux characteristic of injector for internal combustion linear generator integrated power system
Authors:Shi, Yan1 ; Chang, Siqin1 ; Tang, Yumei1
Author affiliation:1 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Corresponding author:Shi, Y. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:50-53
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:As a new type of power source for vehicle, the internal combustion linear generator integrated power system (ICLG) has its novelty and special operation mode. A free-piston single-cylinder four-stroke SI-engine was used for ICLG. The experimental bench was used to measure flux characteristic, and the selected electronic injector has been tested to ensure its dynamic flux characteristic and ensure if it was suitable for ICLG. By experiments, the dynamic flux characteristic curve of the selected injector was obtained and the formula of computing injected fuel under certain pulse was also verified. The results laid foundation for the further research on ICLG.
Number of references:6
Main heading:Jet pumps
Controlled terms:Combustion - Electric power transmission networks - Engine cylinders - Engines - Power transmission - Smoke - Thermochemistry
Un Controlled terms:Experimental benches - Flux characteristic - Free pistons - Injected fuels - Injector - Integrated power systems - Internal combustion engine - Linear generator - Power sources - Special operations
Classification code:804 Chemical Products Generally - 641.1 Thermodynamics - 654.2 Rocket Engines - 703.1 Electric Networks - 706.1.1 Electric Power Transmission - 801.3 Colloid Chemistry - 801.4 Physical Chemistry - 618.2 Pumps - 612.1.1 Internal Combustion Engine Components - 612 Engines - 602.2 Mechanical Transmissions - 521.1 Fuel Combustion - 451.1 Air Pollution Sources - 617.3 Steam Engines
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
34.Accession number:20091211966152
Title:Neural networks PID control of steering torque for electronic differential tracked vehicle
Authors:Zhai, Li1 ; Sun, Fengchun1 ; Gu, Zhongli1
Author affiliation:1 School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Zhai, L. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:1-5 31
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 kinematics and dynamics of tracked vehicle, an analog neural networks PID (ANNPID) control strategy of steering torque for electronic differential tracked vehicle was proposed. The ANNPID control strategy consisted of integrated torque control of two motors, ANNPID control and torque control of an induction motor. A steering control system scheme of electronic differential tracked vehicle with dual induction motors and independent driven was established to achieve torque distribution between two motors based on ANNPID and indirect rotor field oriented (IFOC)torque control of induction motor based on model reference adaptive control(MRAC). Experimental results of dual motors for running steering with different steering radius, 0.5B radius steering and center steering situation showed the effectiveness of the strategy, and indicated that electronic differential tracked vehicle in low-speed has good steering maneuverability.
Number of references:5
Main heading:Adaptive control systems
Controlled terms:Automobile steering equipment - Induction motors - Maneuverability - Motors - Neural networks - Proportional control systems - Steering - Three term control systems - Torque - Torque control - Two term control systems
Un Controlled terms:Analog neural networks - Control strategies - Dual-motors - Electronic differential speed - Kinematics and dynamics - Model reference adaptive controls - Neural network PID control - P-i-d controls - Rotor fields - Steering control systems - Steering radius - Steering torques - Torque distributions - Tracked vehicle
Classification code:671.1 Ship Design - 671.2 Ship Equipment - 705.3 Electric Motors - 931.2 Physical Properties of Gases, Liquids and Solids - 705.3.1 AC Motors - 731.1 Control Systems - 731.3 Specific Variables Control - 723.4 Artificial Intelligence - 663.2 Heavy Duty Motor Vehicle Components - 662.4 Automobile and Smaller Vehicle Components - 421 Strength of Building Materials; Mechanical Properties - 461.1 Biomedical Engineering - 632.2 Hydraulic Equipment and Machinery - 632.4 Pneumatic Equipment and Machinery - 652.1 Aircraft, General - 655.1 Spacecraft, General
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
35.Accession number:20091211966181
Title:Enhanced antioxidant activity of soybean molasses using cellulase
Authors:Li, Xiaolei1, 2 ; Li, Dan2 ; Yin, Yongguang1
Author affiliation: 1 School of Biological and Agricultural Engineering, Changchun 130022, China
2 Jilin Key Lab. of Agricultural Products Processing, Changchun University,Changchun 130022, China
Corresponding author:Li, X. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:135-138 109
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:To increase the antioxidant capacities, soybean molasses were incubated with cellulase at 50°C in Tris-HCl buffer (50 mmol/L, pH value was 5.0) for 30 min. The half-maximal scavenging concentrations of treated and untreated soybean molasses decreasing DPPH 50 percent (SC50) were 9.19 g/L and 17.15 g/L, respectively. The reducing power of cellulase-treated soybean molasses is higher than that of untreated soybean molasses at the same concentration. HPLC analysis revealed that cellulase could hydrolyze all daidzin and genistin in soybean molasses into daidzein and genistein. This may partially contribute to the enhanced antioxidant activity of soybean molasses by using cellulase.
Number of references:12
Main heading:Molasses
Controlled terms:Enzyme activity - Enzymes - Hydrolysis
Un Controlled terms:Antioxidant activity - Antioxidant capacities - Daidzein - Daidzin - Enzyme hydrolysis - Genistein - Genistin - Hplc analysis - pH values - Reducing power - Soybean molasses
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology - 801.2 Biochemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 822.3 Food Products
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
36.Accession number:20091211966188
Title:Effect and correction of water stress and lighting factor on rape nitrogen content spectral analysis
Authors:Zhang, Xiaodong1 ; Mao, Hanping1
Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, 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:40
Issue:2
Issue date:February 2009
Publication year:2009
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:The interaction between rape nitrogen content and water status and influencing factor of lighting in spectrum analysis were developed. In order to avoid the effect of lighting fluctuation, the correction models which based on variation ratio of spectral reflectance were established in each spectral characteristic wavelength of rape nitrogen content and moisture content. The method of principal component analysis (PCA) was used to establish the nitrogen spectral predictive model under different moisture content levels in order to avoid the interaction between rape nitrogen and water status. The combination model was used to predict the nitrogen content of rape. The result showed that the correlation coefficient between the estimated values and the real values is 0.92, the root mean square error is 0.53. The precision of combination model is higher than the previous model which used PCA method and 6 wavelength variables.
Number of references:10
Main heading:Water content
Controlled terms:Electric load forecasting - Lighting - Moisture determination - Nitrogen - Principal component analysis - Spectrum analysis - Spectrum analyzers - Water analysis
Un Controlled terms:Combination models - Correction models - Correlation coefficients - Influencing factors - Lighting fluctuations - Moisture contents - Nitrogen content - PCA methods - Predictive models - Principal components - Rape - Real values - Root mean square errors - Spectral analysis - Spectral characteristics - Spectral reflectances - Water status - Water stress
Classification code:944.2 Moisture Measurements - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 922.2 Mathematical Statistics - 921 Mathematics - 804 Chemical Products Generally - 801 Chemistry - 707 Illuminating Engineering - 706.1 Electric Power Systems - 445.2 Water Analysis - 444 Water Resources
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
37.Accession number:20091211966153
Title:Control technology of vehicle active suspension based on genetic algorithm and neural network
Authors:Tang, Chuanyin1 ; Li, Hua1, 2 ; Zhou, Wei3 ; Zhou, Shuwen1 ; Zhao, Guangyao1
Author affiliation:1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
2 School of Engineering, Shenyang Agricultural University, Shenyang 110161, China
3 Research Institute of Highway, Ministry of Communications, Beijing 100088, China
Corresponding author:Tang, C. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:6-11
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 active suspension system of vehicles by using the genetic algorithms and neural network controls strategy has been proposed. A half-car four-degree of freedom suspension vibration model was described. Compared with the conventional passive suspension system, the analysis has been done to the system control performance. The analysis of the system response was obtained through the change of the neural network training coefficients, genetic algorithms input functions and the change of velocity. The simulation results indicated that the vehicle vibration could be reduced and the ride comfort is ameliorated by the proposed suspension systems.
Number of references:8
Main heading:Suspensions (components)
Controlled terms:Automobile suspensions - Genetic algorithms - Genetic engineering - Neural networks - Vehicles
Un Controlled terms:Active suspension - Active suspension systems - Control technologies - Degree of freedoms - Input functions - Neural network trainings - Neural-network controls - Passive suspension systems - Ride comforts - Simulation - Simulation results - Suspension systems - System controls - System response - Vehicle vibrations - Vibration models
Classification code:723.4 Artificial Intelligence - 723 Computer Software, Data Handling and Applications - 663.2 Heavy Duty Motor Vehicle Components - 662.4 Automobile and Smaller Vehicle Components - 921 Mathematics - 632.1 Hydraulics - 461.8.1 Genetic Engineering - 461.1 Biomedical Engineering - 432 Highway Transportation - 601.2 Machine Components
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
38.Accession number:20091211966176
Title:Experiment on mechanical properties and chemical compositions of wheat stems
Authors:Guo, Weijun1 ; Wang, Fene2 ; Huang, Gaobao2 ; Zhang, Fengwei2 ; Wei, Shilai2
Author affiliation:1 Department of Mechanical Engineering, Lanzhou Polytechnical College, Lanzhou 730050, China
2 Engineering College, Gansu Agricultural University, Lanzhou 730070, China
Corresponding author:Guo, W. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:110-114
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 main mechanical properties of wheat stems in maturity were tested by the electronic testing machine CMT2502. The content of chemical compositions of cellulose, hemicelluloses, lignin, protein, lipid and total carbohydrates of wheat stems in different conditions was determined, and the relation between mechanical properties and major chemical compositions in wheat stems has been analyzed. The results show that the maximum tensile force, tensile strength and Young's modulus of wheat stems are 182.38-242.74 N, 30.36-52.65 MPa and 1143.44-1985.86 MPa respectively; the content of cellulose, hemicelluloses and lignin of wheat stems are 22.58-48.18 percent, 10.85-22.45 percent and 4.83-10.59 percent respectively. A wheat stem is a natural anisotropic polymeric composite consisting of cellulose, hemicelluloses and lignin. The strength, stiffness and elasticity of wheat stems mainly depend on the content, linking form and sequence of cellulose, hemicelluloses and lignin.
Number of references:13
Main heading:Mechanical properties
Controlled terms:Carbohydrates - Cellulose - Elasticity - Experiments - Grain (agricultural product) - Lignin
Un Controlled terms:Chemical compositions - Electronic testing - Maximum tensile forces - Polymeric composites - Stems - Total carbohydrates - Wheat - Wheat stems - Young's modulus
Classification code:951 Materials Science - 931.1 Mechanics - 901.3 Engineering Research - 821.4 Agricultural Products - 815.1.1 Organic Polymers - 811.3 Cellulose, Lignin and Derivatives - 804.1 Organic Compounds - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
39.Accession number:20091211966159
Title:Design and experiment of life-span test system for vehicle driver seat
Authors:Gong, Mingde1 ; Zhao, Dingxuan1 ; Feng, Shizhu1 ; Cui, Gongjie1 ; Xiao, Yingkui1
Author affiliation:1 College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
Corresponding author:Gong, M. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:37-40
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Aimed at the problem of driver seat damaged during its use, life-span test system for vehicle driver seat was designed. The implement and control technique of six-degree of freedom synchronal record and representation of motion and video were introduced, and the method of synchronization play of motion and video by wired communication was developed. Using six-degree of freedom motion base as an experimental research device, applying control technique of the motion and video synchronal record and representation, the experiments of life-span for vehicle driver seat have been carried out. The experimental results verified that the life-span test system is feasible to develop a new vehicle seat.
Number of references:8
Main heading:Vehicles
Controlled terms:Automobile drivers - Testing
Un Controlled terms:Control techniques - Driver seat - Experimental researches -Life-span - Motion base - Six-degree of freedoms - Test system - Wired communications Classification code:422.2 Test Methods - 423.2 Test Methods - 432 Highway Transportation - 912.4 Personnel
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
40.Accession number:20091211966191
Title:Framework-based product structure variant design
Authors:Wu, Shoufei1 ; Zhang, Yong1
Author affiliation:1 Institute of Contemporary Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China
Corresponding author:Wu, S. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:180-183 189
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Variant design is an important way for applying rapid response engineering. To meet the demand of the variant design of the product structure, a framework-based structure variant design method was proposed. The basis framework, as the most important concept of this method, represents the main function, structure and geometry characteristics of the components with the same function but different structure. This method unifies the formalization of heterogeneous variant parts. By the succession of the same basis framework, the replacement the different parts and the dimensional variant of the parts themselves, this method can realize the structure variant design and dimension variant design. The key basis framework modeling methods and technologies were discussed. Finally, the structure variant design software was developed on Pro/Engineerplatform and the application proved the effectiveness of this method.
Number of references:7
Main heading:Software design
Controlled terms:Design
Un Controlled terms: Basis framework - Different structures - Geometry characteristics - Modeling methods - Pro/engineer - Product structures - Rapid response - SML - Structure variant design - Variant design
Classification code:408 Structural Design - 723.1 Computer Programming - 723.5 Computer Applications - 902.1 Engineering Graphics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
41.Accession number:20091211966195
Title:Topological representation and automatic kinematic loop analysis for linkages with multiple joints
Authors:Wang, Chengzhi1
Author affiliation:1 School of Mechanical Engineering, Jimei University, Xiamen 361021, China
Corresponding author:Wang, C. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:199-203
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 for analyzing the mechanism structure was presented. The multiple joints in the schematic diagram could be offset into the separate joints with imaging zero distances, drew them in small distances between them rather than drew them concentrically. With former representation, the topological graph and its incidence matrix were easily built to represent the topological structures of a kinematic chain or a mechanism with multiple joints. When the basic closed loops were calculated with the tree and co-tree matrix got from the incidence matrix, all of the loops in a kinematic chain or a mechanism could be got based on the linear combination of the basic loops. Combining such joints that actually jointed at a single location into its original single symbol, multiple joint, again and then sorting the loops with the weights of each loop, some optimum loops with independence from each other and with joint connectivity in a loop were selected. The research showed that the topological graphs are simple and directly perceptible, and the algorithms for producing the incidence matrix and analyzing closed loops could be conveniently used for programming software for automatic structural and kinematic analysis of mechanism.
Number of references:9
Main heading:Kinematics
Controlled terms:Chains - Mechanisms - Schematic diagrams - Structural analysis - Structural optimization
Un Controlled terms:Kinematic chains - Multiple joints - Optimum loops - Planar linkages - Topological graphs
Classification code:408.1 Structural Design, General - 601.3 Mechanisms - 602.1 Mechanical Drives - 703.1 Electric Networks - 921.5 Optimization Techniques - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
42.Accession number:20091211966169
Title:Design of microwave moisture measuring instrument
Authors:Li, Zelun1 ; Huang, Zhicheng2 ; Huang, Youjun1 ; Deng, Shanxi3
Author affiliation:1 School of Mechanical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
2 College of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China
3 School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author:Li, Z. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:81-83
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The principle of the moisture measuring with microwave drying was analyzed theoretically, and the microwave heater, the power supply system, the high precision weight sensor and the single chip microcomputer (SCM) system were all designed. The software and hardware of the moisture measuring instrument were developed in the lab. Through the experimental data, it takes only about 4 minutes to measure the moisture ratio with the microwave moisture measuring instrument, and the measurement errors are less than 0.05%. Compared with the traditional moisture measuring instrument using microwave attenuation method, the new instrument with microwave drying can detect the moisture of solid material rapidly with high precision.
Number of references:4
Main heading:Moisture control
Controlled terms:Dewatering - Drying - Electric power systems - Instrument errors - Instruments - Measurement errors - Microwave heating - Microwave measurement - Microwaves
Un Controlled terms:Experimental datum - High precision - Measuring instruments - Microwave attenuation methods - Microwave drying - Microwave heaters - Microwave moistures - Moisture ratios - New instruments - Power supply systems - Single chip microcomputers - Solid materials - Weight sensors
Classification code:944.2 Moisture Measurements - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942.2 Electric Variables Measurements - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 922 Statistical Methods - 802.3 Chemical Operations - 731.3 Specific Variables Control - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 706.1 Electric Power Systems - 642.1 Process Heating
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
43.Accession number:20091211966160
Title:Simulation of two stroke HCCI free piston linear alternator
Authors:Li, Qingfeng1 ; Xiao, Jin1 ; Huang, Zhen1
Author affiliation:1 Key Laboratory for Power Machinery and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
Corresponding author:Li, Q. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:41-45 53
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Matlab/Simulink, Chemkin as well as the finite element method (FEM) have been used to investigate the performance of the novel development of HCCI free piston linear alternator (FPLA). The motion differences between the FPLA and the internal combustion engine (ICE) were also presented. The effects of various resistance loads and equivalence ratios were studied. The simulation results showed that the FPLA has a build-up nature to change the top dead center (TDC) according to loads and other parameters. The high compression ratio could be achieved easily, which is an effective way to reduce the emissions and increase the thermal efficiency.
Number of references:11
Main heading:Finite element method
Controlled terms:Compression ratio (machinery) - Internal combustion engines
Un Controlled terms:Alternator - Chemkin - FEM - Free piston - Matlab/Simulink
Classification code:612.1 Internal Combustion Engines, General - 618.1 Compressors -921.6 Numerical Methods
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
44.Accession number:20091211966165
Title:Influence of angle of labyrinth channels on hydraulic performance of emitter
Authors:Yu, Liming1 ; Wu, Pute2 ; Niu, Wenquan2 ; Fan, Xingke2 ; Zhang, Lin1
Author affiliation:1 College of Water Resource and Architectural Engineering, Northwest A and F University, Yangling 712100, China
2 National Engineering Research Center for Water Saving Irrigation at Yangling, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China
Corresponding author:Yu, L. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:63-67
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 analyze the influence of angle of labyrinth channels to the hydraulic performance of emitter, Fluent 6.2 CFD software was used to study the sawtooth, trapezoid and rectangle channels with the different angles. The results showed negative relationship between angle and discharge coefficient and flow state exponent when the other conditions did not change. With the increasing of angle the discharge coefficient of trapezoid labyrinth channels decreased by 19.03 percent, the hydraulic performance of rectangle labyrinth path was similar with trapezoid flow path; it was apparent change to local damage coefficient ζt with the increasing of angle, the ζt of trapezoid labyrinth path increased by 32.5 percent, but sawtooth flow path increased by 23.4 percent in the changing range of angle; when the working pressure was higher, the fraction coefficient was stabilized to value and changed nothing, the state of wateris keeping turbulence.
Number of references:18
Main heading:Hydraulics
Controlled terms:Irrigation
Un Controlled terms:Angle - Drip irrigation - Emitter - Hydraulic performance - Labyrinth channels
Classification code:632.1 Hydraulics - 821.3 Agricultural Methods
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
45.Accession number:20091211966161
Title:Dynamic simulation and characteristic of free piston generator
Authors:Xiao, Chong1 ; Zuo, Zhengxing1
Author affiliation:1 School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Xiao, C. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:46-49
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 dynamic model of a free piston generator (FPG) was developed considering the operation principle of FPG based on dynamics and thermodynamics equations. Then the dynamics characteristic of FPG has been achieved through the numerical solution of the dynamic model. Furthermore the influence of the input parameter of FPG system characteristics and the frequency characteristic were discussed. The results showed that FPG is a self-exciting system and stable performance could be achieved by appropriate control.
Number of references:4
Main heading:Engine pistons
Controlled terms:Combustion - Dynamic models - Dynamics - Engines - Free piston engines - Thermochemistry
Un Controlled terms:Dynamic characteristic - Dynamic simulations - Dynamics characteristics - Free piston - Free-piston generators - Frequency characteristics - Input parameters - Internal combustion engine - Linear machine - Numerical solutions - ON dynamics - Operation principles - Self-exciting - System characteristics - Thermodynamics equations Classification code:921 Mathematics - 801.4 Physical Chemistry - 654.2 Rocket Engines - 641.1 Thermodynamics - 931.1 Mechanics - 617.3 Steam Engines - 612.1 Internal Combustion Engines, General - 612 Engines - 521.1 Fuel Combustion - 612.1.1 Internal Combustion Engine Components
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
46.Accession number:20091211966182
Title:Influence of alternating magnetic field on growth and polysaccharide outside the cell of lions mane hericium
Authors:Gao, Mengxiang1 ; Xia, Fan1 ; Zhu, Pengtao2
Author affiliation:1 College of Life Science, Yangtze University, Jingzhou 434025, China
2 School of Life Sciences, Xiamen University, Xiamen 361005, China
Corresponding author:Gao, M. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:139-141 90
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 stimulation of alternating magnetic field on Lions mane hericium was studied by using a self-designed generator with adjustable magnetic field intensity and time. The results showed that the effects of the magnetic field on the growth of Lions mane hericium's hypha have the sluggish functioning of the produce of polysaccharide outside the cell. When the intensity of the magnetic field is 1.06 A/m, time is 12 h, the dry weight of the Lions mane hericium increased 140.1%. The concentration of the Lions mane hericium's polysaccharide increased 271.7% when the intensity of the magnetic field is 1.06 A/m, time is 24 h. The concentration of the Lions mane hericium's polysaccharide increased 271.7% when the intensity of the magnetic field is 1.06 A/m, time is 48 h, which is the strongest stimulation of the Lions mane hericium's polysaccharide.
Number of references:8
Main heading:Magnetic field effects
Controlled terms:Cell growth - Magnetic materials - Magnetism - Metabolism - Polysaccharides
Un Controlled terms:Alternating magnetic field - Concentration of - Dry weights -Growth - Lions mane hericium - Magnetic-field intensities - Metabolic products
Classification code:461.9 Biology - 701.2 Magnetism: Basic Concepts and Phenomena - 708.4 Magnetic Materials - 801.2 Biochemistry - 804.1 Organic Compounds - 815.1.1 Organic Polymers
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
47.Accession number:20091211966196
Title:Analysis and control of the interior noise in passenger car
Authors:Jia, Jide1, 2 ; Chen, Jian2, 3 ; Wang, Jun1
Author affiliation:1 Automotive Technology Application Department, Bengbu Automobile Management Institute, Bengbu 233011, China
2 Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China
3 Anhui Key Laboratory of Vehicle NVH and Reliability, Hefei 230009, China
Corresponding author:Jia, J. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:204-208
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Based on the principle of reciprocity, an experimental method was developed for the air-borne propagation path, and by doing so, the transfer functions were established from the sound sources to vehicle interior noise, and then the contributions from the different sources were got. According to the result of the noise sources identification, car body was redesigned by using techniques of the sound absorption and sound insulation. Case research showed that acoustical reduction factor of the vehicle floor increased by 1.83-9.74 dB(A), and that the vehicle interior noise fell 4.7 dB(A).
Number of references:5
Main heading:Transfer functions
Controlled terms:Acoustic noise - Acoustic noise measurement - Acoustic variables control - Automobile manufacture - Automobiles - Identification (control systems) - Sound insulating materials - Sound insulation - Vehicles
Un Controlled terms:Car bodies - Experimental methods - Interior noise - Noise control - Noise source identification - Noise sources identifications - Passenger car - Propagation paths - Reduction factors - Sound absorptions - Sound sources - Vehicle interior noise
Classification code:941.2 Acoustic Variables Measurements - 921 Mathematics - 752.1 Acoustic Devices - 751.4 Acoustic Noise - 751.3 Architectural Acoustics - 751.2 Acoustic Properties of Materials - 741.1 Light/Optics - 731.3 Specific Variables Control - 731.1 Control Systems - 703.1 Electric Networks - 662.1 Automobiles - 432 Highway Transportation - 413.3 Sound Insulating Materials
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
48.Accession number:20091211966174
Title:Emulsification technology of bio-oil in diesel with combined surfactants
Authors:Zhang, Jian1 ; Li, Wenzhi1 ; Lu, Qiang1 ; Zhu, Xifeng1
Author affiliation:1 Anhui Key Laboratory for Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
Corresponding author:Zhang, J. ([email protected])
Source Title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated Source Title:Nongye Jixie Xuebao
Volume:40
Issue:2
Issue date:February 2009
Publication year:2009
Pages:103-106 102
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 technology of emulsifying bio-oil with diesel by nonionic surfactants was researched. The nonionic surfactant was evaluated. Emulsion stability was selected as the target, and the effect of HLB value, emulsifying temperature, emulsifying time on the emulsion stability was investigated. Experimental results indicated that the stable emulsions of water in oil came into being by 2 percent nonionic surfactants combined by Span 80 and Tween 80 with the help of 0.1percent 1-octanol at 30-50°C the stability time of emulsion lasted for 60 h; the microscopical photo of emulsion involving 5 percent bio-oil shows that the bio -oil drops whose diameters between 5 and 15 μm accounted for more than 60 per cent.
Number of references:12
Main heading:Emulsification
Controlled terms:Nonionic surfactants - Thermal effects
Un Controlled terms: 1 octanols - Bio-oil - Diesel - Emulsion stabilities - Span 80 - Tween-80 - Water-in-oil
Classification code:421 Strength of Building Materials; Mechanical Properties - 531 Metallurgy and Metallography - 641 Heat and Mass Transfer; Thermodynamics - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 951 Materials Science
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
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