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2011年第42卷第6期共收录46篇
1. Accession number:20113314234854
Title:Mechanism of low speed fluctuation for hydraulic motor based on nonlinear coupled force
 Authors:Lin1., Rongchuan1 ; Guo, Yinbiao2 ; Wei, Shasha1 ; Lin, Hui3
Author affiliation: 1  College of Mechanical Engineering, Jimei University, Xiamen 361012, China
2  School of Physics and Mechanical and Electrical Engineering, Xiamen University, Xiamen 361002, China
3  Xiamen Construction Machinery Co. Ltd., Xiamen 361012, China
 Corresponding author:Lin, R. (rongchuanchina@sina.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:213-218
 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 mechanism and the producing condition of instability in low velocity of hydraulic motors were analyzed based on dynamic model and test. Nonlinear coupled force combined with hydraulic spring and self-excited vibration was thought to be the key factor that could affect instability in low angular velocity. The results indicated that the low speed creeping characteristics of hydraulic motor could be affected by friction torque, leakage and compressibility of oil and liquid. The test showed that the fluctuation was the negative characteristics of friction in the self-excited vibration conditions. Some measures were proposed to improve the low speed stability of hydraulic motors.
 Number of references:14
 Main heading:Leakage (fluid)
Controlled terms:Angular velocity  -  Friction  -  Hydraulic motors  -  Hydraulics  -  Vibrations (mechanical)
Uncontrolled terms:Friction torque  -  Hydraulic spring  -  Key factors  -  Low speed  -  Low velocities  -  Mechanism analysis  -  Self-excited vibration  -  Self-excited vibrations
Classification code:452.3 Industrial Wastes  -  632.1 Hydraulics  -  632.2 Hydraulic Equipment and Machinery  -  931.1 Mechanics
 Database:Compendex
   
2. Accession number:20113314234849
 Title:Multi-feature decision fusion method based on D-S evidence theory for apple grading
 Authors:Li, Xianfeng1 ; Zhu, Weixing2 ; Hua, Xiaopeng1 ; Kong, Lingdong1
Author affiliation: 1  School of Information Engineering, Yancheng Institute of Technology, Yancheng 224051, China
2  School of Electronic and Information Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Zhu, W. (wxzhu@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:188-192
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:According to the uncertainty and low accuracy of apple grading relying on the single feature, key features such as size, shape, color and defect which could show the apple's appearance quality were extracted and a decision fusion method based on D-S evidence theory was proposed. Firstly, the apples were graded according to each of the four features utilizing human experience and neural network. Then, the former grading results were used as evidences to achieve the decision fusion in order to increase the grading reliability and accuracy. Finally, 80 apple samples were used to test grading effect. The experimental results showed that five apples were misjudged and the grading accuracy reached to 92.5%. The proposed method had good performance on classification rate and stability compared to the grading method based on single feature.
 Number of references:12
 Main heading:Grading
 Controlled terms:Decision theory  -  Feature extraction  -  Fruits  -  Neural networks
Uncontrolled terms:Apple grading  -  Classification rates  -  D S evidence theory  -  Decision fusion  -  Decision fusion methods  -  Key feature
Classification code:716 Telecommunication; Radar, Radio and Television  -  723.4 Artificial Intelligence  -  821.4 Agricultural Products  -  913.3 Quality Assurance and Control  -  921 Mathematics  -  961 Systems Science
 Database:Compendex
   
3. Accession number:20113314234844
Title:Effects of cinnamaldehyde-combined preservative on quality of Pacific white shrimp during storage
 Authors:Mu, Honglei1 ; Gao, Haiyan1 ; Chen, Hangjun1 ; Fang, Xiangjun1 ; Mao, Jinlin1
Author affiliation: 1  Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
 Corresponding author:Gao, H. (spsghy@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:161-166
 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 eight natural compounds on quality and shelf life of Pacific white shrimps was investigated. Cinnamaldehyde exhibited both antimicrobial activity and inhibitory ability against polyphenol oxidase (PPO) activity to maintain the quality of the Pacific white shrimp during storage. The kinetic analysis showed that cinnamaldehyde was a noncompetitive inhibitor for PPO of the Pacific white shrimp. The combined preservative was optimized using orthogonal experiment and then the optimal combination was as follows: 0.10% cinnamaldehyde, 0.05% phytic acid and 0.50% sodium alginate. The aerobic plate counts (APC), total volatile bases nitrogen (TVB-N), thiobarbituric acid reactive substances (TBARS) assay and sensory analyses were used to investigate the change in the quality of the Pacific white shrimps after applications of different treatments. Based on these studies, shrimps treated with the combined preservative exhibited the lowest APC, TVB-N, and TBARS value among the all treatments by the end of storage. The combined preservative could improve the sensory properties and prolong the shelf life of the Pacific white shrimps to 8-10 days.
 Number of references:20
 Main heading:Shellfish
 Controlled terms:Aldehydes  -  Optimization  -  Sodium  -  Spoilage
Uncontrolled terms:Aerobic plate counts  -  Anti-microbial activity  -  Cinnamaldehyde  -  Kinetic analysis  -  Melanosis  -  Microbial spoilage  -  Natural compounds  -  Optimal combination  -  Orthogonal experiment  -  Pacific white shrimp   -  Phytic acids  -  Polyphenol oxidase  -  Sensory analysis  -  Sensory properties  -  Shelf life  -  Sodium alginates  -  Thiobarbituric acid reactive substances
Classification code:461.9 Biology  -  549.1 Alkali Metals  -  804.1 Organic Compounds  -  921.5 Optimization Techniques
 Database:Compendex
   
4. Accession number:20113314234827
 Title:Comparison experiment of three grapevine application rates adjusted models
 Authors:Zhou, Jizhong1 ; He, Xiongkui1 ; Landers, Andrew2
Author affiliation:  1  College of Science, China Agricultural University, Beijing 100193, China
2  Department of Entomology, Cornell University, New York 14456, United States
 Corresponding author:He, X. (xiongkui@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:80-83
 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 grapevine canopy changes a lot along the growth season, so do the application rates. Three models were used with the aim to apply pesticides on grapevine rationally. The models mentioned were unit canopy row (UCR), leaf wall area (LWA), and DOSAVIN?A. The results showed that at early growth stage, the deposits for DOSAVIN?A, LWA and traditional method were not different significantly, neither for UCR, DOSAVIN?A and LWA; at middle growth stage, LWA method achieved the similar deposits to traditional, UCR got the minimum deposits; at the late growth stage, the traditional method had the maximum deposits than the others. Among all the trials at three growth stages, the distributions of deposits (CV) were very closed to each other.
 Number of references:10
 Main heading:Fruits
 Controlled terms:Deposits  -  Pesticides
Uncontrolled terms:Application rates  -  Early growth  -  Grapevine  -  Growth season  -  Growth stages  -  Performance comparison  -  Three models
Classification code:532 Metallurgical Furnaces  -  612 Engines  -  617 Turbines and Steam Turbines  -  803 Chemical Agents and Basic Industrial Chemicals  -  821.4 Agricultural Products
 Database:Compendex
   
5. Accession number:20113314234850
 Title:Data automatic transmission technology based on ADAMS, Pro/E and ANSYS
 Authors:Tang, Xiuying1 ; Xiao, Dan1 ; Liu, Ling1 ; Liu, Chuan1 ; Mao, Enrong1
Author affiliation: 1  College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Tang, X. (txying@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:193-197
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:An automatic interface method for data transmission based on ADAMS was proposed by using the idea of plug-in program design and sequence and loop process control. The interface software was developed on the platform of dynamics analysis of mechanical system software ADAMS, 3-D parametric modeling software Pro/E and finite element analysis software ANSYS, utilized the respective secondary development technology of the platform software as well as VC . Finally, the Dongfanghong-1604 tractor steering mechanism was used as experimental verification. The results showed that the sideslip characteristics of tractor tire could be used to describe the steering performance of tractor, and the relevant data information involved in the analyzing process was transmitted automatically and losslessly among ADAMS, Pro/E and ANSYS.
 Number of references:9
 Main heading:Finite element method
Controlled terms:Electric drives  -  Three dimensional  -  Tractors (agricultural)  -  Tractors (truck)
Uncontrolled terms:ADAMS  -  Analyzing process  -  ANSYS  -  Automatic interface  -  Automatic transmission  -  Data informations  -  Dynamics analysis  -  Experimental verification  -  Finite element analysis software  -  Interface software   -  Parametric modeling  -  Plug-ins  -  Pro/E  -  Program design  -  Secondary development  -  Steering mechanisms  -  Steering performance
Classification code:663.1 Heavy Duty Motor Vehicles  -  705 Electric Generators and Motors  -  902.1 Engineering Graphics  -  921.6 Numerical Methods
 Database:Compendex
   
6. Accession number:20113314234824
 Title:Drift mechanism of flat fan nozzle
Authors:Song, Jianli1 ; Liu, Yajia1 ; Zhang, Jing1 ; He, Xiongkui1 ; Zeng, Aijun1 ; Herbst, A.2
Author affiliation: 1  College of Science, China Agricultural University, Beijing 100193, China
2 Federal Research Centre for Cultivated Plants, Messeweg 11/12 D-38104 Braunschweig, Germany
  Corresponding author:He, X. (xiongkui@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:63-69
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to research the drift mechanism and develop effective anti-drift technology, phase Doppler particle analyzer (PDPA) was used to analyze droplets size and velocity distribution in spraying fan near flat fan nozzles. Results showed that the distribution of droplets size (VMD) in spraying fan sectional view was like a concave, and droplets size varied following quadratic polynomial in cross-symmetry plane and lengthwise-symmetry plane of spraying fan. Droplets drifting easily were located in the 300-500 mm of the centre of spraying fan far from nozzles. Entrained air velocity in spraying fan varied following Gauss distribution, and the flow field of entrained air was similar to a submerged air jet. Major drifting areas were evaluated depending on the droplets size and velocity distribution in spraying fan. Results showed that there were three major drifting areas in spraying fan: cross edges of spraying fan, wake region of spraying fan and outer layer facing wind of spraying fan.
 Number of references:16
 Main heading:Spray nozzles
Controlled terms:Drops  -  Particle size analysis  -  Two phase flow  -  Velocity control  -  Velocity distribution
Uncontrolled terms:Air jet  -  Drift  -  Drift mechanism  -  Droplet  -  Entrained air  -  Flat fan nozzle  -  Gauss distribution  -  Outer layer  -  Phase Doppler particle analyzer  -  Quadratic polynomial   -  Sectional views  -  Wake region
Classification code:443.1 Atmospheric Properties  -  631.1 Fluid Flow, General  -  731.3 Specific Variables Control  -  943.2 Mechanical Variables Measurements  -  951 Materials Science
 Database:Compendex
   
7. Accession number:20113314234818
Title:Analysis of flat hydrodynamic torque converter without inner ring based on different flatness ratios
 Authors:Zhu, Xilin1 ; Huang, Wei2 ; Liu, Chunbao3 ; Ma, Wenxing3 ; Wu, Xiaoqiang3
Author affiliation:  1  College of Engineering, Zhejiang Normal University, Jinhua 321004, China
2 State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
3  College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
 Corresponding author:Ma, W. (mawx@jlu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:33-37
 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 flat torque converter without inner ring was put forward to find out the impact of different flatness ratios and inner ring on the performance of torque converter. The flat torus design method based on the ellipse was used. Three different flatness ratio torque converters without inner ring were designed. The blade's profile was distorted in space. The internal flow field of the torque converter was simulated by CFD method, and the distribution of the velocity and pressure of internal flow field was analyzed, so the impact of flatness ratio and inner ring on the flow field and performance could be figured out by analyzing the numerical solution.
 Number of references:7
 Main heading:Torque
Controlled terms:Flow fields  -  Hydraulic torque converters  -  Hydrodynamics  -  Numerical methods
Uncontrolled terms:CFD method  -  Design method  -  Flatness ratios  -  Hydrodynamic torque converter  -  Inner rings  -  Internal flow field  -  Numerical solution  -  Performance
Classification code:421 Strength of Building Materials; Mechanical Properties  -  602 Mechanical Drives and Transmissions  -  631 Fluid Flow  -  921.6 Numerical Methods
 Database:Compendex
   
8. Accession number:20113314234843
 Title:Deacidification of high-acid rice bran oil by enzymatic esterification
 Authors:Wu, Cong1 ; Zeng, Qingmei1 ; Jin, Jing1 ; Wei, Chunyan1 ; Huang, Boying1
Author affiliation:  1  Engineering Research Center of Bio-Process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
 Corresponding author:Zeng, Q. (zengqingmei-1@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:156-160
 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:Deacidification of high-acid rice bran oil catalyzing by esterification using lipase Novozym 435 were studied. According to response surface method (RSM) and Box-Benhnken experimental design, the best conditions of enzymatic esterification were optimized based on the analysis of significant factors and their interactions. The optimum conditions were: enzyme concentration of 1.1%, initial glycerol of 0.42 mg, reaction temperature of 56.4°C, the reaction time of 23.2 h. Under the conditions, rice bran oil acid value (KOH) decreased from 56 mg/g to 5.04 mg/g, the esterification rate of free fatty acid (FFA) reached to 91% and matched the prediction value by model.
 Number of references:15
 Main heading:Esterification
Controlled terms:Esters  -  Fatty acids  -  Flood control  -  Furfural  -  Glycerol  -  Surface properties
Uncontrolled terms:Acid value  -  Deacidification  -  Deacidification by esterification  -  Enzymatic esterification  -  Enzyme concentrations  -  Free fatty acid  -  Novozym435  -  Optimum conditions  -  Reaction temperature  -  Response surface method   -  Rice bran oil
Classification code:454.1 Environmental Engineering, General  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  951 Materials Science
 Database:Compendex
   
9. Accession number:20113314234825
 Title:Influence of spray operating parameters on droplet deposition
Authors:Lü, Xiaolan1 ; Fu, Ximin1 ; Wu, Ping1 ; Ding, Suming1 ; Zhou, Liangfu1 ; Yan, Huijuan2
Author affiliation: 1  Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
2  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
 Corresponding author:Fu, X. (fuximin@263.net)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:70-75
 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:In order to research on influence of spray operating parameters on droplet deposition, four kinds of spray pressure, air-blast velocity, travel speed, and three kinds of sampling height, were set to testing droplet coverage in artificial tree canopy and deposition shelf (sparse canopy), using orchard axial-fan air-assisted sprayer. Results showed that spray pressure had no significant effect on droplet deposition. To reduce travel speed could increase droplet deposition on leaves frontside and backside. To increase air-blast velocity could increase droplet deposition effectively on leaves backside. According to the regression analysis, all the spraying parameters had significant effect on droplets deposition. But influence degree was different, the parameters order from strong to weak by influence degree were sample height, speed, air-blast velocity and spraying pressure.
 Number of references:13
 Main heading:Deposition
 Controlled terms:Pressure effects  -  Regression analysis
Uncontrolled terms:Air-assisted sprayer  -  Air-blast  -  Droplet coverage  -  Droplet deposition  -  Influence degree  -  Operating parameters  -  Sampling heights  -  Spray pressure  -  Spraying parameters  -  Spraying pressure   -  Travel speed  -  Tree canopy
Classification code:813.1 Coating Techniques  -  922.2 Mathematical Statistics  -  931.1 Mechanics
 Database:Compendex
   
10. Accession number:20113314234835
 Title:Structure modeling and radial compression simulation of corn stalk cores
 Authors:Liao, Na1 ; Huang, Guangqun1 ; Chen, Longjian1 ; He, Cheng1 ; Han, Lujia1
Author affiliation:  1  College of Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Han, L. (hanlj@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:117-121
 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 further understand compression characteristics of the crop straws with core, taking Nongda108 corn stalk cores as object, the viscoelastic parameters were obtained through radial compression test for the crop stalks with core was anisotropic, non-homogeneous and non-linear. The finite element model of the corn stalk core was established with ANSYS. Radial compression and relaxation of corn stalk cores were preceded and simulated. The results showed stress relaxation characteristics of corn stalk cores were depicted by five parameters generalized Maxwell model, and errors between experimental values and finite element simulation values about fitting model parameters were less than 10%. The test approved that the radial compression change curves between test and simulation were accordant, and verified the validity of the simulation results and the feasibility of the calculation model.
 Number of references:18
 Main heading:Computer simulation
Controlled terms:Compression testing  -  Crops  -  Data compression  -  Finite element method  -  Stress relaxation
Uncontrolled terms:Calculation models  -  Compression characteristics  -  Corn stalk  -  Experimental values  -  Finite element models  -  Finite element simulations  -  Fitting model  -  Generalized Maxwell model  -  Non-homogeneous  -  Non-linear   -  Radial compression  -  Simulation result  -  Stalk cores  -  Structure modeling  -  Visco-elastic parameters
Classification code:943 Mechanical and Miscellaneous Measuring Instruments  -  931 Classical Physics; Quantum Theory; Relativity  -  921.6 Numerical Methods  -  821.4 Agricultural Products  -  723.5 Computer Applications  -  723.2 Data Processing and Image Processing  -  421 Strength of Building Materials; Mechanical Properties
 Database:Compendex
   
11. Accession number:20113314234839
 Title:Process and kinetics of acid hydrolysis from carya cathayensis Sarg. Shell to xylose
Authors:Yu, Xiaojie1 ; Zhou, Cunshan1 ; Zhang, Youzuo1 ; Lin, Lin2 ; Wang, Yunxiang1 ; Liu, Bin3
Author affiliation: 1  School of Agriculture and Food Science, Zhejiang A and F University, Lin'an 311300, China
2  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
3  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
 Corresponding author:Zhou, C. (cunshanzhou@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:138-142
 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 reaction time, temperature and acid concentration of acid hydrolysis from Carya cathayensis Sarg. shell to xylose were investigated. The dynamics model of the acid hydrolysis was established. The model was verified by experiment. The optimum extraction parameters were: temperature was 363.15 K, concentration of hydrochloric acid was 1.2 mol/L and acid hydrolysis time was 5 h. The apparent activation energy of the transformation to xylose was 70.91 kJ/mol. The relationship between the reaction rate constant, temperature and acid concentration was as follows: lnk1=21.454 0-8.529 0/T-5.063 2lnC.
 Number of references:13
 Main heading:Hydrolysis
Controlled terms:Activation energy  -  Hydrochloric acid  -  Rate constants  -  Reaction kinetics
Uncontrolled terms:Acid concentrations  -  Acid hydrolysis  -  Apparent activation energy  -  Carya cathayensis Sarg. Shell  -  Dynamics models
Classification code:801.4 Physical Chemistry  -  802.2 Chemical Reactions  -  803 Chemical Agents and Basic Industrial Chemicals
 Database:Compendex
   
12. Accession number:20113314234837
 Title:Analysis and optimization of different mixing method in completly mixed digesters
 Authors:Zhu, Hongguang1 ; Bi, Junwei1 ; Shi, Huixian1
Author affiliation:  1  Modern Agricultural Science and Engineering Institute, Tongji University, Shanghai 200092, China
 Corresponding author:Zhu, H. (zhuhg@tongji.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:127-131 137
 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 characteristics of the flow field in completly mixed biogas digester were studied by computational fluid dynamics (CFD). Effects of different installation way of agitator to the disturbances in the upper and lower layer were analyzed. The results showed that increasing of agitator mounting height was difficult to improve the flow. Therefore, the double-mixing was used in the biogas digesters. Compared to the original installation, flow speed could increase by 90.90% in the 4.3 m layer and 20.94% in the 0.2 m layer with the double-mixing. The actual project also showed that this modified method could reduce scum, disturb sludge and improve operational efficiency.
 Number of references:16
 Main heading:Computational fluid dynamics
 Controlled terms:Biogas  -  Mixing  -  Pulp digesters
Uncontrolled terms:Anaerobic reactor  -  Biogas digesters  -  Completly mixed  -      Computational fluid  -  Flow speed  -  Mixing method  -  Operational efficiencies
Classification code:522 Gas Fuels  -  802.1 Chemical Plants and Equipment  -  802.3 Chemical Operations  -  921.6 Numerical Methods
 Database:Compendex
   
13. Accession number:20113314234820
 Title:2BG-2 type corn ridge planting no-till planter
 Authors:Lin, Jing1 ; Liu, Andong2 ; Li, Baofa1 ; Li, Bo1 ; Zhao, Defang1 ; Lü, Changyi1
Author affiliation:  1  College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
2  Agricultural Machinery Extended Station of Liaoning Province, Shenyang 110034, China
 Corresponding author:Lin, J. (synydxlj999@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:43-46 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:Based on requirement of conservation tillage models in ridge cropping system in northeast area of China, no-tillage planting technology was analyzed. The agriculture-technique demand for no-till planter was put forward. The rolling disc residue cutting coulter and disc spiral ridge cleaning device were used in the proposed planter to improve the planter pass rate and keep ridge shape. Double disc fertilizer was used. Two ground-drive mechanisms were driven to remain the lateral stability of ridge-till planter. Field test results showed that the proposed 2BG-2 corn ridge planting no-till planter met the design requirement.
 Number of references:8
 Main heading:Agricultural machinery
 Controlled terms:Agriculture
Uncontrolled terms:Cleaning devices  -  Corn  -  Disc residue cutting coulter  -  No-till planters  -  Ridge planting
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.1 Agricultural Machinery and Equipment
 Database:Compendex
   
14. Accession number:20113314234826
Title:Simulation analysis of structure parameters of jet-mixing apparatus on jet-mixing performance
Authors:Qiu, Baijing1 ; Xu, Xichao1 ; Yang, Ning1 ; Deng, Bin1 ; Jiang, Guowei1 ; Wu, Chundu1
Author affiliation: 1  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Qiu, B. (qbj@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:76-79 69
 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 optimizing the structure of jet-mixing apparatus, effect of three main structure parameters: nozzle-tube distance, area ratio and entrainment angle on the mixing performance were investigated based on CFD technique. A mathematical model for jet apparatus was established and validated by actual experimental data. Simulated results and experiment results showed that the established model was reasonable. The results indicated that nozzle-tube distance, area ratio and entrainment angle would not change the tendency of h-q with the increasing of flow ratio. However, both nozzle-tube distance and entrainment angle would not change the tendency of η-q except for area ratio.
 Number of references:14
 Main heading:Mixing
Controlled terms:Computer simulation  -  Mathematical models  -  Nozzle design  -  Nozzles  -  Optimization
Uncontrolled terms: Area ratios  -  CFD technique  -  Experimental data  -  Flow ratios  -  Main structure  -  Mixing performance  -  Parameter optimization  -  Performance  -  Plant protection  -  Simulated results   -  Simulation analysis  -  Structure parameter
Classification code: 631.1 Fluid Flow, General  -  723.5 Computer Applications  -  802.3 Chemical Operations  -  921 Mathematics  -  921.5 Optimization Techniques
 Database:Compendex
   
15. Accession number:20113314234828
 Title:Nozzle configuration and software for center pivot irrigation system
 Authors:Yan, Haijun1 ; Yao, Peipei2 ; Zhu, Yong2 ; Yu, Pengfei2
Author affiliation:   1  College of Water Conversancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2  Center for Water-Saving Irrigation Equipment, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
 Corresponding author:Yan, H. (yanhj@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:84-88
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to get uniform water distribution, nozzle size selection of low pressure sprinklers with nonuniform spacing along the center pivot main lateral was established.Three configuration methods of sprinklers equipped with, without and partly with pressure regulators were put forward, and databases on sprinklers, pressure regulators and spans were built. Software on nozzle configuration and hydraulic performance analysis of center pivot irrigation system was also developed. Nozzle package selection for DYP-249 center pivot was generated by using the developed software and a field experiment on its hydraulic performance was conducted. The results showed that the inlet flow rate by using the software for DYP-249 center pivot was very close to the theoretical value, with a relative error less than 1.1%. Both the measured and simulated application rates along the main lateral had the same change trend. Due to the wind speed, wind direction, evaporation and drift, programming algorithm etc., the measured water distribution coefficient was 75.26%, lower than the simulated coefficient of 85.59% by this software. The practical example showed that the software could achieve quick and accurate nozzle configuration, and well predicted hydraulic performance for center pivot irrigation system.
 Number of references:10
 Main heading:Nozzles
Controlled terms:Hose  -  Hydraulics  -  Inlet flow  -  Mathematical models  -  Pressure regulation  -  Pressure regulators  -  Sprinkler systems (irrigation)  -  Water supply systems
Uncontrolled terms:Application rates  -  Center pivot  -  Center pivot irrigation systems  -  Change trends  -  Field experiment  -  Hydraulic performance  -  Low pressures  -  Non-uniform spacing  -  Nozzle configuration  -  Programming algorithms   -  Relative errors  -  Size selection  -  Theoretical values  -  Water distribution coefficients  -  Water distributions  -  Wind directions  -  Wind speed
Classification code:446.1 Water Supply Systems  -  619.1 Pipe, Piping and Pipelines  -  631.1 Fluid Flow, General  -  632.1 Hydraulics  -  821.1 Agricultural Machinery and Equipment  -  921 Mathematics
 Database:Compendex
   
16. Accession number:20113314234846
 Title:Diagnosis method of potato early blight based on quantum neural network
 Authors:Ma, Xiaodan1 ; Tan, Feng1 ; Xu, Shaohua2
Author affiliation: 1  College of Information Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
2  School of Computer and Information Technology, Northeast Petroleum University, Daqing 163318, China
 Corresponding author:Ma, X. (mxd1025@tom.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:174-178 183
 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 realize the intelligent diagnosis of potato early blight, with the combination of the linear superposition of quantum computing ideas and adaptive neural network computation, a quantum neural network model for diagnosis of potato early blight was built. The model used multiple quantum energy levels of the hidden layer activation function of the linear superposition of quantum neuron model. Fuzzy decision of disease diagnosis was effectively solved. Uncertainty characteristics of sample data was adaptively given in training process to determine. The algorithm overcame the disadvantages of local minimum and increased learning efficiency and training speed. The simulation results showed that the diagnosis accuracy reached to 96.5%.
 Number of references:18
 Main heading:Diagnosis
Controlled terms:Computational linguistics  -  Neural networks  -  Quantum computers  -  Quantum theory
Uncontrolled terms:Activation functions  -  Adaptive neural networks  -  Diagnosis methods  -  Disease diagnosis  -  Fuzzy decision  -  Hidden layers  -  Intelligent diagnosis  -  Learning efficiency  -  Linear superpositions  -  Local minimums   -  Potato early blight  -  Quantum Computing  -  Quantum energy levels  -  Quantum neural networks  -  Quantum neuron  -  Sample data  -  Simulation result  -  Training process  -  Training speed
Classification code:461.1 Biomedical Engineering  -  461.6 Medicine and Pharmacology  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  931.4 Quantum Theory; Quantum Mechanics
 Database:Compendex
   
17. Accession number:20113314234813
 Title:Shift control method of vehicle robot driver based on fuzzy neural network
 Authors:Chen, Gang1 ; Zhang, Weigong2 ; Chang, Siqin1
Author affiliation: 1  School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
2  School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
 Corresponding author:Chen, G. (gang0418@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 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:In order to realize the intelligent shift of robot driver, a shift control method of vehicle robot driver based on fuzzy neural network (FNN) was proposed. The displacement of throttle pedal for robot driver, speed and acceleration of test vehicle were used as the input of FNN model, and shift was used as the output of FNN model. The number of membership functions was three, and the type of membership functions was gbellmf (generalized bell membership function). The hybrid learning algorithm that combined back propagation algorithm with least square method was applied to train the model. Simulation results demonstrated that the results of simulation shift for robot driver using FNN control had a good consistency with the results of experimental shift. Furthermore, the proposed method could realize the gear-selection of robot driver correctly with the changes of operation environment.
 Number of references:12
 Main heading:Membership functions
Controlled terms:Fuzzy neural networks  -  Industrial robots  -  Intelligent robots  -  Learning algorithms  -  Least squares approximations  -  Vehicles
Uncontrolled terms:Control methods  -  FNN models  -  Hybrid learning algorithm  -  Intelligent shift  -  Least square methods  -  Robot driver  -  Shift control  -  Simulation result  -  Test vehicle  -  Vehicle robot driver   -  Vehicle tests
Classification code:432 Highway Transportation  -  723 Computer Software, Data Handling and Applications  -  723.4 Artificial Intelligence  -  731.6 Robot Applications  -  921 Mathematics  -  921.6 Numerical Methods
 Database:Compendex
   
18. Accession number:20113314234823
 Title:Design of wear-resitance seeding feeder mechanism of rotary rice transplanter
 Authors:Zhao, Yun1 ; Huang, Jiebeng1 ; Zhang, Weiwei1
Author affiliation: 1  College of Mechanical Engineering and Automation, Zhejiang Sci.-Tech. University, Hangzhou 310018, China
 Corresponding author:Zhao, Y. (zhaoyun@zstu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 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:Compared to crank-rocker riding rice transplanter, the speed of rotary rice transplanter is doubled. In addition, the force impact on the ends of the rotative phase of double helix axis are five times stronger with the quality of feeder moving mechanism and rice seedings box is added. So the abrasion between the slider and the slide is more serious. In order to reduce the abrasion and impact, buffer springs were equipped to both ends of the double helix axis. By setting up the kinematic and dynamic models of slider and slide and writing the optimizing program, the optimal curve in rotative trough at both ends of the double helix axis and the stiffness coefficient of the buffer spring were obtained. After optimization, the force between the slider and the slide were cut down observably referring to the buffer spring added to both ends of the double helix axis, which maked the use of nylon material instead of rolled steel to produce double-helix axis feasible. Nylon materials and rolled steel were used to produce double-helix axis and slide, then comparison experiments of attrition resistance were carried out. The result of the experiments indicated wear-resisting nylon 66 double-helix axis and quench steel No.45 could conform to the rice transplanter's working longevity.
 Number of references:8
 Main heading:Wear resistance
Controlled terms:Abrasion  -  Experiments  -  Feeding  -  Optimization  -  Polyamides  -  Rayon
Uncontrolled terms:Crank rocker  -  Double helix  -  Nylon 66  -  Optimizing programs  -  Rice transplanter  -  Rolled steel  -  Steel No.45  -  Stiffness coefficients  -  Wear-resistance design
Classification code:951 Materials Science  -  921.5 Optimization Techniques  -  901.3 Engineering Research  -  819.2 Synthetic Fibers  -  815.1.1 Organic Polymers  -  691.2 Materials Handling Methods  -  421 Strength of Building Materials; Mechanical Properties
 Database:Compendex
   
19. Accession number:20113314234816
 Title:3-D vibration isolation of vehicle seat based on parallel mechanism
 Authors:Wu, Weiguang1 ; Ma, Lüzhong1 ; Yang, Qizhi1 ; Chen, Xiuxiang1
Author affiliation: 1  School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Wu, W. (weiujs@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:23-27
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A 3-D parallel mechanism was designed to solve the problem of 3-D vibration isolation of vehicle seat. The kinematic analysis of the platform indicated that there was big workspace in vertical direction. The Jacobian matrix was not relative to the vertical displacement, so the parallel mechanism met the need of 3-D vibration isolation of vehicle seat. The results of mode analysis showed that three natural frequency of the 3-D vibration isolation system could avoid the sensitive frequency of body, and the dynamic sensitivity analysis for the 3-D vibration isolation system discovered the influences of the design parameter to the natural frequency.
 Number of references:11
 Main heading:Vibration analysis
Controlled terms:Dynamic analysis  -  Jacobian matrices  -  Mechanisms  -  Natural frequencies  -  Sensitivity analysis  -  Three dimensional  -  Vehicles
Uncontrolled terms:Design parameters  -  Dynamic sensitivity analysis  -  Kinematic Analysis  -  Mode  -  Mode analysis  -  Parallel mechanisms  -  Sensitivity  -  Vertical direction  -  Vertical displacements  -  Vibration isolation systems   -  Vibration isolations
Classification code: 921.1 Algebra  -  921 Mathematics  -  902.1 Engineering Graphics  -  943.2 Mechanical Variables Measurements  -  711.1 Electromagnetic Waves in Different Media  -  432 Highway Transportation  -  422.2 Strength of Building Materials : Test Methods  -  601.3 Mechanisms
 Database:Compendex
   
20. Accession number:20113314234819
 Title:Testing on anti-wind erosion effect of soil for crop stubble coverage farmlands
 Authors:Zhao, Yonglai1 ; Chen, Zhi2 ; Sun, Yuechao1 ; Wang, Ronglian3
Author affiliation: 1  College of Vocational and Technical, Inner Mongolia Agricultural University, Baotou 014109, China
2  College of Mechanical and Electronic Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
3  Institute of Water Resources Research, Inner Mongolia, Huhhot 010019, China
 Corresponding author:Chen, Z. (chz6653@sohu.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:38-42 37
 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:Soil erosion experiment was conducted by the way of field fixed poison measurement by taking use of a movable wind erosion tunnel in order to explore anti-wind erosion effect of crop stubble coverage farmland in ecotone between agriculture and animal husbandry in north areas of Yinshan mountain. The results showed that soil wind erosion amount for all of the five kinds of soil surfaces decreased with the increasing of crop stubble coverage and the anti-wind erosion effect was more remarkable with the increasing of crop stubble coverage at the high speeds. The wind erosion module of farmland soil increased with the increasing of wind speed and the reducing rate of wind erosion module of conservation tillage farmland was 40.42%-77.42% with the wind speed of 12-18 m/s in comparison with conventional tillage farmland. The wind erosion module reduced with the increasing of aerodynamic roughness length. Anti-wind erosion effect of conservation tillage farmland will tend to be more significant when its effective width to resist wind erosion reaches to 5.25 m.
 Number of references:23
 Main heading:Erosion
Controlled terms:Agricultural machinery  -  Crops  -  Farms  -  Forestry  -  Soil conservation  -  Soil mechanics  -  Soil testing  -  Soils  -  Wind effects
Uncontrolled terms:Aerodynamic roughness length  -  Animal husbandry  -  Conservation tillage  -  Conventional tillage  -  Effective width  -  Erosion effects  -  Farmland soils  -  Soil erosion  -  Soil surfaces  -  Soil wind erosion   -  Wind erosions  -  Wind speed
Classification code:407 Maritime and Port Structures; Rivers and Other Waterways  -  443.1 Atmospheric Properties  -  483 Soil Mechanics and Foundations  -  483.1 Soils and Soil Mechanics  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
 Database:Compendex
   
21. Accession number:20113314234845
Title:Optimized photosynthetic active radiation prediction model based on kernel function combination
 Authors:Wu, Haiwei1, 2 ; Yu, Haiye1 ; Zhang, Lei1
Author affiliation:  1  Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
2  School of Electrical and Information Engineering, Beihua University, Jilin 132021, China
 Corresponding author:Yu, H. (haiye@jlu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:167-173
 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:Using the photosynthetic active radiation (PAR), scattering radiation (PFDdif) and direct radiation (PFDdir) from the ginseng base in forest as research object, a support vector machine model about photosynthetic active radiation based on linear function (k1), polynomial function (k2) and radial basis function (k3) was constituted. By using K-fold cross validation method, penalty parameter c and g numerical value were optimized by particle swarm optimization. Penalty parameter c and g numerical value of photosynthetic active radiation support vector machine model were configured 16 and 1 by grid search algorithm. 0.2k1 0.8k2 kernel function was chosed to construct the predict PAR model by related coefficient and the fitting equilibrium principle. Fitting index of predicting set 1 and 2 was separately 89.213 2% and 81.789 6% based on the predicting model. By using particle swarm algorithm, the two predicting models' parameters were optimized. Fitting index of predicting set 1 and 2 was separately 92.156 0% and 90.036 0%. The predicting model based on 0.2k1 0.8k2 and particle swarm algorithm showed ability to predict PAR variation trend.
 Number of references:12
 Main heading:Radiation
Controlled terms:Algorithms  -  Forecasting  -  Mathematical models  -  Numerical methods  -  Parameter estimation  -  Particle swarm optimization (PSO)  -  Radial basis function networks  -  Support vector machines
Uncontrolled terms:Kernel function  -  Particle swarm algorithm  -  Photosynthetic active radiations  -  Prediction model  -  Support vector
Classification code:711 Electromagnetic Waves  -  723 Computer Software, Data Handling and Applications  -  723.4 Artificial Intelligence  -  731.1 Control Systems  -  921 Mathematics  -  921.6 Numerical Methods
 Database:Compendex
   
22. Accession number:20113314234856
  Title:Online monitoring method of input push-pull force for CNC lathe power chuck
 Authors:Zhou, Cheng1 ; Yang, Huayong1 ; Yang, Likui1
Author affiliation: 1  State Key Lab. of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
 Corresponding author:Yang, H. (yhy@zju.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:224-229 223
 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 direct input push-pull force monitoring method with rotary pull-press force sensors was proposed. It was analyzed how the centrifugal force affecting the error the rotary pull-press force sensors. An algorithm was disclosed to compensate the error from the expansion under the centrifugal force. The rotary pull-press force sensor was used to monitor the input force of the power chuck in the experiment. It monitored the variation of the input push-pull force of the power chuck well. The direct monitoring of the input push-pull force was more reliable than the indirect monitoring of the oil pressure. The input push-pull force sensor was more difficult to be polluted by the cooling water and scrap iron.
 Number of references:9
 Main heading:Chucks
Controlled terms:Centrifugation  -  Iron scrap  -  Lathes  -  Monitoring  -  Numerical control systems  -  Partial discharges  -  Presses (machine tools)  -  Sensors
Uncontrolled terms:Centrifugal Forces  -  CNC lathe  -  Direct monitoring  -  Force monitoring  -  Force sensor  -  Input forces  -  Oil pressures  -  Online monitoring  -  Power chuck  -  Pull-press force sensor
Classification code:943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  802.3 Chemical Operations  -  801 Chemistry  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  731.1 Control Systems  -  605 Small Tools and Hardware  -  603.1 Machine Tools, General  -  603 Machine Tools  -  452.3 Industrial Wastes  -  701.1 Electricity: Basic Concepts and Phenomena
 Database:Compendex
   
23. Accession number:20113314234841
Title:Purification and corresponding spectroscopic analysis of selenium polysaccharide in sour jujube fruits
 Authors:Sun, Yanfang1 ; Liang, Zongsuo2 ; Shan, Changjuan3 ; Viernstein, H.4 ; Unger, F.4
Author affiliation: 1  College of Science, Liaoning Technical University, Fuxin 123000, China
2  College of Life Science, Northwest A and F University, Yangling, Shaanxi 712100, China
3  Department of Biology, Henan Institute of Science and Technology, Xinxiang 453003, China
4  Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Vienna A-1090, Austria
 Corresponding author:Liang, Z. (liangzs@ms.iswc.ac.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:148-151 147
 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 crude polysaccharide was extracted from sour jujube fruits using hot water extraction followed by ethanol precipitation.The content of crude polysaccharide was (92.6±4.72) mg/g by phenol-sulfuric acid assay, and selenium content of the polysaccharide was (17.8±2.05) μg/kg by fluorescence spectrophotometry method. After further purified by DEAE-52 and Sephadex G-75 column chromatography, a white and flocculent polysaccharide was obtained. After hydrolysis with 2M trifluoroacetic acid, TLC plates was detected and high performance anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) was further analyzed. A comparative study of the two methods showed that the polysaccharide was composed of rhamnose, xylose, arabinose, glucose and galactose with a ratio of 3.21:8.36:5.63:0.96:1.82. The selenium polysaccharide exhibited typical absorption of polysaccharide characterized by Infrared spectroscopy (IR) spectroscopy; 1H NMR and 3C NMR analysis indicated that the structure of selenium polysaccharide was pyranoid glucan with β-glycosidic bond.
 Number of references:14
 Main heading:Absorption spectroscopy
Controlled terms:Column chromatography  -  Ethanol  -  Fruits  -  Glucose  -  Infrared spectroscopy  -  Ion exchange  -  Nuclear magnetic resonance  -  Phenols  -  Purification  -  Resonance   -  Selenium  -  Solvent extraction  -  Spectroscopic analysis  -  Spectrum analysis  -  Sulfuric acid  -  Thin layer chromatography  -  Water content
Uncontrolled terms:Comparative studies  -  Fluorescence spectrophotometry  -  Glycosidic bond  -  High-performance anion-exchange chromatography  -  Hot water extraction  -  HPAEC-PAD  -  NMR analysis  -  Pulsed amperometric detection  -  Sephadex  -  Sour jujube   -  Trifluoroacetic acids
Classification code:821.4 Agricultural Products  -  921 Mathematics  -  932.2 Nuclear Physics  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  941.4 Optical Variables Measurements  -  804.2 Inorganic Compounds  -  804.1 Organic Compounds  -  444 Water Resources  -  701 Electricity and Magnetism  -  712.1.1 Single Element Semiconducting Materials  -  801 Chemistry  -  802.2 Chemical Reactions  -  802.3 Chemical Operations
 Database:Compendex
   
24. Accession number:20113314234832
 Title:Kinematic simulation and time series analysis of D-knotter and its ancillary mechanisms
 Authors:Yin, Jianjun1 ; Li, Shuang1 ; Li, Yaoming1
Author affiliation: 1  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Yin, J. (yinjianjun@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:103-107
 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 Mubang 9KF-8042 baler for square straw bale was chosen as research object. 3-D assemble model of D-knotter and its ancillary mechanisms were firstly built up by using SolidWorks software, and imported to ADAMS software for its kinematics simulation and time series analysis of enlacing and knotting process, including sending rope, pushing rope, hanging rope, holding rope, winding rope, biting rope, cutting rope and threading off knot. Knotting principle of D-knotter was revealed. Motion test of the physical prototype showed that reverse designed model of D-knotter and its ancillary mechanisms were accurate, and the results of kinematics simulation recurred the predetermined motion processes of enlacing and knotting requirement correctly. According to the results of kinematics simulation, coupling relationship of motion time series of each functional component was determined.
 Number of references:6
 Main heading:Time series analysis
Controlled terms:Computer software  -  Kinematics  -  Rope  -  Three dimensional  -  Time series
Uncontrolled terms:ADAMS software  -  Baler  -  Cutting ropes  -  Designed models  -  Functional components  -  Kinematic simulations  -  Kinematics simulation  -  Knotter  -  Motion simulations  -  Motion tests   -  Research object  -  Solidworks software  -  Straw bales  -  Time-serie analysis
Classification code: 535 Rolling, Forging and Forming  -  723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications  -  922.2 Mathematical Statistics  -  931.1 Mechanics
 Database:Compendex
   
25. Accession number:20113314234817
Title:Driving deviation properties simulation and analysis of wheeled tractors under ship sway
 Authors:Wen, Qi1 ; Chen, Zhi1 ; Wang, Zhi1 ; Nie, Ying1 ; Chen, Wenke1
Author affiliation: 1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
 Corresponding author:Wen, Q. (wenjianqi@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:28-32
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to study the cornering and sideslip properties of wheeled tractors under ship sway, a ship-based wheeled tractor's lateral characteristics were tested on a large tilt table. The effects of different ship sways including roll, pitch and heave on the wheeled tractors' driving deviation properties were analyzed based on the simulation software Virtual.Lab Motion. Finally the effects of the pilot's human factors on the wheeled tractors' driving deviation properties and deviation characteristics of American active ship-based tractor A/S32A-32 were analyzed.
 Number of references:9
 Main heading:Ships
Controlled terms:Computer simulation  -  Computer software  -  Human engineering  -  Tractors (agricultural)  -  Tractors (truck)
Uncontrolled terms:Driving deviation properties  -  Multibody simulations  -  Simulation analysis  -  Simulation and analysis  -  Simulation software  -  Wheeled tractor
Classification code:723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  674 Small Craft and Other Marine Craft  -  672 Naval Vessels  -  671 Naval Architecture  -  663.1 Heavy Duty Motor Vehicles  -  461.4 Ergonomics and Human Factors Engineering
 Database:Compendex
   
26. Accession number:20113314234812
Title:Design and application for navigation multi-agent of intelligent vehicle based on information fusion
 Authors:Chen, Wuwei1 ; Wang, Tanbin1 ; Jiao, Jun1 ; Wang, Minglei1 ; Wang, Jiaen1
Author affiliation: 1  School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
 Corresponding author:Chen, W. (cww@mail.hf.ah.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:1-5
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Aiming at the structural characteristics and mission requirements of the intelligent vehicle, a navigation strategy was designed with respect both to architecture and information process. A hybrid architecture containing deliberation and reaction was proposed on the basis of multi-agent. A set of agents was designed according to the structural characteristics. Based on the previous research, the methods of image proceeding and information fusion were integrated into this architecture. The simulation and experiment results showed that the intelligent vehicle with the multi-agent architecture could use the information of multi-sensor efficiently and performed well on navigation and obstacle avoidance.
 Number of references:11
 Main heading:Navigation
Controlled terms:Architecture  -  Image fusion  -  Image processing  -  Information fusion  -  Intelligent vehicle highway systems  -  Vehicles
Uncontrolled terms:D-S evidential theory  -  Design and application  -  Hybrid architectures  -  Information process  -  Intelligent vehicle  -  Mission requirements  -  Multi sensor  -  Multi-Agent  -  Multiagent architecture  -  Navigation strategies   -  Structural characteristics
Classification code:402 Buildings and Towers  -  432 Highway Transportation  -  716.3 Radio Systems and Equipment  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  903.1 Information Sources and Analysis
 Database:Compendex
   
27. Accession number:20113314234855
Title:Structure deformation of machine tools caused by permanent magnet linear synchronous motor's normal force
 Authors:Yin, Yiyong1 ; Zhu, Liping2 ; Jia, Zhixin1 ; Zhao, Tong3
Author affiliation: 1  School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2  Institute of Tontec, Tontec Technology Investment Group Co. Ltd., Nantong 226400, China
3  Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
 Corresponding author:Zhao, T. (zhaotong@mail.tsinghua.edn.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:219-223
 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:On the basis of permanent magnet linear synchronous motor (PMLSM) feeding system mechanical model, effects of normal force of moving parts in different stroke to deformation of a gantry type beam were analyzed by finite element method. A curve corresponding to y directional deformation of the beam was achieved and the deformation of the beam was measured. The normal force of PMLSM was achieved by finite element simulation and relevant experiments. Deformation of the tool point was analyzed by finite element method and compared with the experimental results. The simulation results were verified to be reliable.
 Number of references:9
 Main heading:Permanent magnets
Controlled terms:Deformation  -  Electric motors  -  Feeding  -  Finite element method  -  Machine tools  -  Magnetic devices  -  Synchronous motors
Uncontrolled terms:Feeding system  -  Finite element simulations  -  Mechanical model  -  Moving parts  -  Normal forces  -  Permanent magnet linear synchronous motor  -  Simulation result  -  Structure deformation
Classification code:714 Electronic Components and Tubes  -  705.3.1 AC Motors  -  705.3 Electric Motors  -  704.1 Electric Components  -  921.6 Numerical Methods  -  704 Electric Components and Equipment  -  603.1 Machine Tools, General  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties  -  691.2 Materials Handling Methods
 Database:Compendex
   
28. Accession number:20113314234851
 Title:Static model of flexible pneumatic swaying joint
 Authors:Bao, Guanjun1 ; Shao, Tiefeng2 ; Li, Shanghui1 ; Wang, Zhiheng1 ; Yang, Qinghua1
Author affiliation: 1  Lab. of Special Purpose Equipment and Advanced Processing Technol., Min. of Edu. and Zhejiang Prov., Zhejiang University of Technology, Hangzhou 310032, China
2  Engineering Training Center, China Jiliang University, Hangzhou 310018, China
 Corresponding author:Yang, Q. (robot@zjut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:198-202 212
 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 swaying joint was proposed based on the flexible pneumatic actuator (FPA), which was composed of two symmetrical and parallel-connected arc-shaped FPAs. The movable ends of arc-shaped FPAs were connected with the movable deck and the latter could sway around the revolving pair. By changing the air pressures inside the two arc-shaped FPAs, they would have turning angles with different sizes, which realized the swaying movement of the joint. The static model was established based on the equilibrium of moments. Simulation results showed that the turning angle of the swaying joint was basically linear with the air pressure inside the arc-shaped FPA. The turning angle increased with the initial angle, average radius of FPA and pre-stretching angle, and decreased with the shell thickness of FPA. Experimental results implied that the established mathematic model could basically describe the static characteristics of the swaying joint.
 Number of references:15
 Main heading:Pneumatics
Controlled terms:Actuators  -  Atmospheric pressure  -  Focal plane arrays  -  Pneumatic equipment
Uncontrolled terms:Air pressures  -  Different sizes  -  Flexible pneumatic actuator  -  Initial angle  -  Mathematic model  -  Parallel-connected  -  Pre-stretching  -  Shell thickness  -  Simulation result  -  Static characteristic   -  Static model  -  Swaying joint  -  Turning angles
Classification code:443.1 Atmospheric Properties  -  632 Hydraulics, Pneumatics and Related Equipment, and Fluidics  -  941.4 Optical Variables Measurements
 Database:Compendex
   
29. Accession number:20113314234829
  Title:Relationship between corn lodging resistance and mechanical parameters
Authors:Chen, Yanjun1 ; Wu, Kebin1 ; Zhang, Junxiong1 ; Nong, Kejian1 ; Li, Jiansheng2 ; Li, Wei1
Author affiliation: 1  College of Engineering, China Agricultural University, Beijing 100083, China
2  College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China
 Corresponding author:Chen, Y. (522068343@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:89-92
 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:Corn stalk strength and elastic modulus are important influence factors in lodging resistance of corn. Through the mechanical experiments testing of the five varieties of corn stalk, it indicated that the stress and elastic modulus of different varieties of corn stalk strength were significantly different. The method of determining the bending strength and elastic modulus of the corn stalk was discussed. The corn stalk tester based on the simple beam model and the corn stalk elasticity tester based on the cantilever model were designed. The stretching pressure sensor, MCK-Y automatic display apparatus as the main part of electronic components, with force-loading mechanism by manual force realized digital display of bending strength and elastic modulus. The bending strength and elastic modulus of five different corn stalks were tested by using the two instruments. The comparison showed that the lodging resistance of different corn stalks was proportional to the bending strength and elastic modulus.
 Number of references:9
 Main heading:Bending strength
 Controlled terms:Elastic moduli  -  Elasticity  -  Stresses
Uncontrolled terms:Beam model  -  Corn  -  Corn stalk  -  Digital display  -  Electronic component  -  Influence factors  -  Lodging resistance  -  Mechanical parameters  -  Mechnical parameters  -  Stalk
 Classification code:421 Strength of Building Materials; Mechanical Properties
 Database:Compendex
   
30. Accession number:20113314234814
 Title:Torsional vibration analysis and stiffness match of power split hybrid system
 Authors:Han, Bing1 ; Cai, Yixi1 ; Zhang, Tong1
Author affiliation: 1  School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Han, B. (hanbingpaper@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:12-15 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:Torsional vibration analysis method for the power split hybrid system with planetary gear was studied. Resonant speed of the powertrain was optimized through the stiffness matching of torsional damper. Parametric vibration model was built to investigate the influence of gear ratio and damper stiffness on powertrain resonance. Analysis results indicated that there was a high resonant speed zone when the ratio was controlled around some special value. The resonant speed could be reduced out of the engine working speed range with lower stiffness torsional damper.
 Number of references:7
 Main heading:Vibration analysis
Controlled terms:Damping  -  Elastic waves  -  Hybrid computers  -  Hybrid systems  -  Machine vibrations  -  Powertrains  -  Stiffness
Uncontrolled terms:Analysis results  -  Gear ratios  -  Hybrid power  -  Parametric vibrations  -  Planetary Gears  -  Power splits  -  Powertrain system  -  Resonant speed  -  Torsional damper  -  Torsional vibration analysis   -  Vibration characteristics  -  Working speed
Classification code:943.2 Mechanical Variables Measurements  -  931.1 Mechanics  -  921 Mathematics  -  951 Materials Science  -  722.5 Analog and Hybrid Computers  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties  -  663.2 Heavy Duty Motor Vehicle Components
 Database:Compendex
   
31. Accession number:20113314234833
 Title:Circular chain ropeway for cargo transportation in mountain citrus orchard
Authors:Hong, Tiansheng1 ; Su, Jian1 ; Zhu, Yuqing1 ; Yang, Zhou1 ; Yue, Xuejun1 ; Song, Shuran1
Author affiliation: 1  Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
 Corresponding author:Hong, T. (tshong@scau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:108-111
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A circular chain cargo transportation ropeway system was proposed and developed for a simplified and labor-saving method to transport fruit and production materials in mountain citrus orchards. The ropeway system was composed of driving devices, hoisting chain, horizontal chain pulley, steering mechanism, automatic tensioning device, vertical chain pulley, combined chain pulley and cargo hooks. With the in-situ ropeway system installed in Guangdong and Jiangxi provinces, the chain circulation movement including up and down hill, steering and straight operations around the mountain was realized, fruit and production materials could be easily uploaded and downloaded by farmers standing on the ground, thereby the labor-saving and effective mountain citrus orchard cargo transportation was achieved.
 Number of references:13
 Main heading:Freight transportation
Controlled terms:Citrus fruits  -  Hooks  -  Landforms  -  Materials handling  -  Orchards
Uncontrolled terms:Cargo transportation  -  Combined chains  -  Driving device  -  In-situ  -  Jiangxi Province  -  Mountain citrus orchard  -  Ropeway  -  Steering mechanisms
Classification code: 821.4 Agricultural Products  -  821.3 Agricultural Methods  -  691.1 Materials Handling Equipment  -  691 Bulk Handling and Unit Loads  -  481.1 Geology  -  434 Waterway Transportation  -  433 Railroad Transportation  -  432 Highway Transportation  -  431 Air Transportation
 Database:Compendex
   
32. Accession number:20113314234853
 Title:Elastohydrodynamic lubrication analysis of globoidal indexing cam with steel ball
 Authors:Fu, Zhenshan1, 2 ; Feng, Xianying1 ; Li, Lei1 ; Zhang, Chengliang1
Author affiliation: 1  School of Mechanical Engineering, Shandong University, Ji'nan 250061, China
2  Department of Mechanical and Electronic Engineering, Weihai Vocational College, Weihai 264210, China
 Corresponding author:Feng, X. (fxying@sdu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:208-212
 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 Hamrock-Dowson and film thickness calculation formulae, the EHD film thickness formulae of globoidal indexing cam mechanism of steel ball between steel ball and cam raceway were deduced. By using numerical analysis method, film thickness of cams with modified constant velocity motion curve, modified trapezoidal acceleration motion curve and modified sine acceleration motion curve respectively were compared during the entire indexing cycle. The effects of cam speed, load torque on indexing plate, ball diameter, indexing plate diameter, curvature ratio, etc. on film thickness were also discussed. It provided theoretical basis for the lubrication design of globoidal indexing cam of steel ball.
 Number of references:9
 Main heading:Elastohydrodynamic lubrication
Controlled terms:Cams  -  Elastohydrodynamics  -  Indexing (of information)  -  Numerical analysis  -  Numerical methods  -  Spheres
Uncontrolled terms:Ball diameter  -  Constant velocity motion  -  Curvature ratio  -  Globoidal indexing cam  -  Load torques  -  Motion curve  -  Steel ball  -  Steel balls  -  Theoretical basis
Classification code:601.3 Mechanisms  -  607.2 Lubrication  -  631 Fluid Flow  -  631.1.1 Liquid Dynamics  -  903.1 Information Sources and Analysis  -  921.6 Numerical Methods
 Database:Compendex
   
33. Accession number:20113314234852
 Title:Numerical analysis for textured port plate of axial piston pump
 Authors:Deng, Haishun1, 2 ; Qi, Sheng1 ; Yu, Haiwu1 ; Wang, Xiaolei1
Author affiliation: 1  Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2  Department of Mechanical Engineering, Auhui University of Science and Technology, Huainan 232001, China
 Corresponding author:Wang, X. (xl_wang@nuaa.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:203-207
 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 deal with the problems in axial piston pump such as uneven loading of port plate pair, offset load moment of port plate and bad lubrication of port plate pair in low pressure area, textured port plate in low pressure area was studied. An analysis model was established to study the effects of diameter, depth and area ratio of micro-dimple on load carrying capacity and compensating torque. The results showed that the micro-dimples with greater dimple diameter could induce higher load carrying capacity and compensation torque. The optimum dimple area ratio was in the range of 12%-18% and the dimple depth gave an obvious affection on load carrying capacity and compensation torque.
 Number of references:11
 Main heading:Reciprocating pumps
 Controlled terms:Load limits  -  Numerical analysis  -  Torque
Uncontrolled terms:Analysis models  -  Area ratios  -  Axial piston pump  -  Dimple depth  -  Dimple diameter  -  Higher loads  -  Load moment  -  Low-pressure area  -  Micro-dimple  -  Piston pump   -  Port plate  -  Port plate pair  -  Surface texture
Classification code:421 Strength of Building Materials; Mechanical Properties  -  618.2 Pumps  -  914.1 Accidents and Accident Prevention  -  921.6 Numerical Methods
 Database:Compendex
   
34. Accession number:20113314234836
Title:Effects analysis of free airspace to pig slurry wheat straw aerobic composting in laboratory reactor
 Authors:Wang, Yongjiang1 ; Huang, Guangqun1 ; Han, Lujia1
Author affiliation: 1  College of Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Han, L. (hanlj@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:122-126
 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 study the effects of different initial free airspaces (Fas) on pig slurry-wheat straw reactor scale composting, three levels of Fas (56.70%, 62.67%, 68.36%) were obtained by mixing pig slurry and wheat straw with the same mass ratio (1:0.086) but in different wheat straw sizes (0-1 cm, 2-5 cm, 7 cm). Oxygen concentration and temperature were monitored by sensors during the whole composting period, while moisture and volatile solid (VS) content were checked by chemical analysis method at the end of composting. In addition, a Monod form model was employed to simulate VS content during composting period. According to the results of composting test, changes of oxygen concentration, temperature, moisture and VS based on different initial Fas levels were respectively clearly different; effects of bulking agent sizes on mixture structure were apparent.
 Number of references:18
 Main heading:Slurry pipelines
 Controlled terms:Chemical analysis  -  Mammals  -  Moisture  -  Oxygen
Uncontrolled terms:Aerobic composting  -  Bulking agents  -  Effects analysis  -  Free airspace  -  Laboratory reactors  -  Mass ratio  -  Oxygen concentrations  -  Pig slurries  -  Reactor  -  Simulation   -  Volatile solid  -  Wheat straws
Classification code:801.3 Colloid Chemistry  -  801.4 Physical Chemistry  -  804 Chemical Products Generally  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
 Database:Compendex
   
35. Accession number:20113314234847
 Title:Visualization model of plant leaf vein
 Authors:Lu, Ling1 ; Wang, Lei1
Author affiliation: 1  School of Information Engineering, East China Institute of Technology, Fuzhou 344000, China
 Corresponding author:Lu, L. (luling@ecit.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:179-183
 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 visualization modeling method of leaf vein was presented, including the geometric modeling for plant leaf and shape modeling for leaf vein. The geometric model for leaf was built through changing rectangle shape. Different methods were tested for the shape modeling for leaf vein. The feather vein was formed by nonlinearity function. The mushy vein was formed by random iteration based on seed growing. The palmate vein was formed based on leaf growing. These methods could be realized quickly and easily.
 Number of references:6
 Main heading:Visualization
 Controlled terms:Geometry
Uncontrolled terms:Geometric modeling  -  Geometric models  -  Modelling  -  Nonlinearity function  -  Plant leaf  -  Shape modeling  -  Venation  -  Virtual plant  -  Visualization modeling  -  Visualization models
 Classification code:902.1 Engineering Graphics  -  921 Mathematics
 Database:Compendex
   
36. Accession number:20113314234830
 Title:Power analysis and experiment on longitudinal axial-threshing unit test-bed
 Authors:Li, Yaoming1 ; Tang, Zhong1 ; Xu, Lizhang1 ; Zhao, Zhan1 ; Li, Hongchang1
Author affiliation: 1  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Li, Y. (ymli@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:93-97
 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 accurately obtain power characteristics of longitudinal axial-threshing unit test-bed, rotary torque sensors, signal acquisition card and industrial computer control system were used to measure the power of rice threshing with the drum rotate speed of 850 r/min, inter-tooth space of 100 mm, threshing clearance of 25 mm, straw-grain ratio of 2.6, feeding capacity of 7 kg/s. Instantaneous power was obtained by analyzing the power of rice threshing process characteristics. The results showed that the idle power of spike tooth longitudinal axial-threshing drums was 10.93 kW; the threshing power was 36.94 kW; mechanical efficiency was 69.62%.The experiment of power influencing factors, such as feeding capacity, inter-tooth space, straw-grain ratio, drum rotate speed and threshing clearance, was conducted on the longitudinal axial-threshing unit test-bed to analysis the threshing power characteristics and threshing performance.
 Number of references:13
 Main heading:Agriculture
Controlled terms:Computer control systems  -  Experiments  -  Grain (agricultural product)  -  Harvesters  -  Longitudinal control  -  Signal processing  -  Test facilities
Uncontrolled terms:Combine harvesters  -  Influencing factor  -  Instantaneous power  -  Longitudinal axial-threshing drum  -  Mechanical efficiency  -  Power analysis  -  Power characteristic  -  Process characteristics  -  Rotate speed  -  Signal acquisitions   -  Torque sensors
Classification code:402.1 Industrial and Agricultural Buildings  -  716.1 Information Theory and Signal Processing  -  731.1 Control Systems  -  731.3 Specific Variables Control  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  901.3 Engineering Research
 Database:Compendex
   
37. Accession number:20113314234821
Title:Actuality analysis of resistance-reducing properties on soil cultivating components with different macroscopic soil-engaging surfaces
 Authors:Guo, Zhijun1 ; Du, Gan1, 2 ; Zhou, Zhili1 ; Zhang, Peng3 ; Li, Yixuan3
Author affiliation: 1  College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, China
2  Department of Logistics Command and Engineering, Navy University of Engineering, Tianjin 300450, China
3  Department of Vehicle Engineering, Zhengzhou Jiaotong Polytechnic College, Zhengzhou 450062, China
 Corresponding author:Guo, Z. (gzhj1970@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:47-52
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The working resistance of soil cultivating component can be reduced efficiently by way of optimizing its macroscopic soil-engaging surface. The cultivating component designed by this method possesses the features of simple structure, low cost and energy-saving. The forms of generatrix and directrix, and the way of generatrix slides along the directrix would seriously affect the working resistance of soil cultivating component. The macroscopic soil-engaging surfaces of soil cultivating components were classified mainly by viewpoint of the curvature profile of the directrix. How the geometric parameters of the macroscopic soil-engaging surface of soil cultivating component affect the working resistance was introduced, including the width, cutting angle, cultivating depth, ratio of width and depth, ratio of length and depth, etc. The soil-engaging surfaces with different kinds of directrixes, including straight line, normal circular curve, simple curve and complex curvature-changing curve, were especially analyzed to uncover their affection to working resistance and soil disturbance.
 Number of references:30
 Main heading:Surface resistance
 Controlled terms:Soils
Uncontrolled terms:Curvature  -  Cutting angles  -  Directrix  -  Geometric parameter  -  Low costs  -  Simple structures  -  Soil disturbances  -  Soil-engaging surface  -  Straight lines  -  Working resistance
Classification code:423 Non Mechanical Properties and Tests of Building Materials  -  483.1 Soils and Soil Mechanics  -  951 Materials Science
 Database:Compendex
   
38. Accession number:20113314234848
 Title:Automatic acquisition system for insects images in field environment
 Authors:Liu, Deying1 ; Ding, Weimin1 ; Chen, Kunjie1
Author affiliation: 1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
 Corresponding author:Ding, W. (wmding@njau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:184-187 173
 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 phobophototaxis of rice plant hoppers and the method of capturing insects applied by crop protection experts, a kind of automatic acquisition system for insects images in field environment was developed. The system was consisted of a computer, an insect capture platform, an image acquisition device and controlling system. Firstly, a fluorescent lamp was utilized to attract wild insects on the curtain screen installed on the capture platform. Later, with the 2-D movement of the capture platform and the white curtain, the image acquisition device controlled by the computer and microprocessor took photos of insects on the curtain screen at regular intervals. Hence the images of insects in a natural status were obtained. Experimental results showed that the system could be used to obtain clear and complete images of insects in a natural status. The study provided facilities for the automatic identification for rice plant hoppers and the prediction of the density of the rice plant hoppers in fields.
 Number of references:16
 Main heading:Fluorescent screens
 Controlled terms:Automation  -  Fluorescent lamps  -  Hoppers  -  Image acquisition
Uncontrolled terms:Acquisition  -  Acquisition device  -  Automatic acquisition  -  Automatic identification  -  Controlling system  -  Crop protection  -  Image  -  In-field  -  Insect  -  Rice plants
Classification code:691.1 Materials Handling Equipment  -  723 Computer Software, Data Handling and Applications  -  731 Automatic Control Principles and Applications  -  732 Control Devices  -  741.1 Light/Optics  -  741.3 Optical Devices and Systems
Database:Compendex

39. Accession number:20113314234838
 Title:Life cycle assessment on fuel ethanol producing from sweet sorghum stalks
 Authors:Tian, Yishui1 ; Li, Shizhong2 ; Zhao, Lixin1 ; Meng, Haibo1 ; Huo, Lili1, 3
Author affiliation: 1  Chinese Academy of Agricultural Engineering, Beijing 100125, China
2  Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
3  College of Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Tian, Y. (yishuit@yahoo.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:132-137
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Aiming at the technologies of sweet sorghum planting and advanced solid state fermentation (ASSF) in Inner Mongolia, a life cycle assessment (LCA) model on energy consumption, greenhouse gas emissions and other relative impact factors was established together with a database of fertilizer, pesticide and other energy inputs. The model showed that the energy input was 34831 MJ/t and mainly distributed in sweet sorghum planting and ethanol producing phases. The energy output, net energy produced, energy-making efficiency and CO2 emissions were 46562 MJ/t, 11730.97 MJ/t, 1.34 and 93.23 g/MJ, respectively. The results showed sweet sorghum ethanol making was feasible from the view point of energy production.
 Number of references:30
 Main heading:Life cycle
Controlled terms:Carbon dioxide  -  Energy utilization  -  Ethanol  -  Gas emissions  -  Global warming  -  Greenhouse gases
Uncontrolled terms:Energy inputs  -  Energy output  -  Energy productions  -  Fuel ethanol  -  Inner Mongolia  -  Life cycle assessment model  -  Life-cycle assessments  -  Net energy  -  Relative impact  -  Solid-state fermentation   -  Sweet sorghum
Classification code:451 Air Pollution  -  451.1 Air Pollution Sources  -  523 Liquid Fuels  -  525.3 Energy Utilization  -  804.2 Inorganic Compounds  -  913.1 Production Engineering
 Database:Compendex
   
40. Accession number:20113314234822
 Title:Precision seed-metering device for pelleted corn seeds
 Authors:Xia, Lianming1, 2 ; Wang, Xiangyou2 ; Geng, Duanyang2 ; Zhang, Qingfeng2
Author affiliation: 1  College of Engineering, Northeast Agricultural University, Harbin 150030, China
2  School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255000, China
 Corresponding author:Wang, X. (wxy@sdut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:53-57
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to solve the problem of mechanical precision metering, such as being strict with the size of seeds and high damage to seeds, a precision metering was designed based on the pelleted corn seeds. A single (precision) seeder experimental method, with the pelleted corn seeds whose size approximatively follow the normal distribution N (13.9, 0.0566), comparative experiments of the metering performance were conducted by changing the structure parameters and rational speed of the moving plate. The results indicated that the single seed index was more than 98% when the rational speed of the moving plate was 14 r/min, the diameter of the cell was 15 mm and the oblique angle was 23°, so it proved that it had high sowing precision and speed.
 Number of references:15
 Main heading:Seed
Controlled terms:Experiments  -  Normal distribution  -  Pelletizing  -  Plates (structural components)  -  Pneumatic materials handling equipment
Uncontrolled terms:Comparative experiments  -  Corn  -  Corn seeds  -  Experimental methods  -  Mechanical precision  -  Moving plate  -  Oblique angles  -  Pellete  -  Performance experiment  -  Precision metering   -  Precision seed-metering device  -  Seed-metering device  -  Structure parameter
Classification code:408.2 Structural Members and Shapes  -  691.1 Materials Handling Equipment  -  802.3 Chemical Operations  -  821.4 Agricultural Products  -  901.3 Engineering Research  -  922.1 Probability Theory
 Database:Compendex
   
41. Accession number:20113314234840
 Title:Finite element analysis on mechanical properties of longan
 Authors:Qing, Yanmei1 ; Li, Changyou1 ; Huang, Handong1 ; Cao, Yuhua1
Author affiliation: 1  College of Engineering, South China Agricultural University, Guangzhou 510642, China
 Corresponding author:Cao, Y. (cyh2808@sina.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:143-147
 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 geometric shape and physics parameters of longan fruit, the mechanical model of single longan was established. The module of elasticity of longan flesh was determined by means of comparing the calculated results on the mechanical model with the experimental results. By finite element analysis on longan under the compressed load with the pedicel and middle, the stress distribution of inner longan was obtained. The results showed the maximal tensile stress was the main factor causing the macroscopic breakage form of longan skin.
 Number of references:9
 Main heading:Finite element method
 Controlled terms:Mechanical properties  -  Stress concentration  -  Tensile stress
 Uncontrolled terms:Geometric shape  -  Longan  -  Longan fruit  -  Mechanical model
Classification code:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  921.6 Numerical Methods  -  951 Materials Science
 Database:Compendex
   
42. Accession number:20113314234831
 Title:Suspension unit hydraulic-mechanical coupling simulation of 4UX-500 potato harvester
 Authors:Shi, Zenglu1 ; Zhao, Wuyun1 ; Wu, Jianmin1 ; Niu, Haihua1 ; Sun, Wei1
Author affiliation: 1  College of Engineering, Gansu Agricultural University, Lanzhou 730070, China
 Corresponding author:Zhao, W. (zhaowy@gsau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:98-102 92
 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 parametric model of 4UX-550 potato harvester and suspension device of Dongfanghong-200P tractor were established with Pro/E software, and the assembly of suspension device of tractor and potato harvester was accomplished. The assembly model was imported into ADAMS. The hydraulic lifting loop system model was established. Then, the coupling simulation of mechanical system and hydraulic system were advanced. The results showed that when hydraulic pressure drived suspension unit, top hanging point appearing the biggest force evenly delayed 0.080 s than that of the mechanical force driving, and lower hanging point delayed 0.088 s under lifting conditions; top hanging point delayed 0.056 s and lower hanging point delayed 0.060 s under dropping conditions. When top and lower suspension points at the same force under the drive by hydraulic pressure and mechanical, hydraulic cylinder buffer force was in the ranges of 5.09-15.39 N.
 Number of references:10
 Main heading:Suspensions (components)
Controlled terms:Computer simulation  -  Computer software  -  Harvesters  -  Hydraulic equipment  -  Hydraulic fluids  -  Hydraulics  -  Mechanical engineering  -  Tractors (truck)
Uncontrolled terms:Assembly model  -  Coupling simulation  -  Hydraulic cylinders  -  Hydraulic pressure  -  Hydraulic system  -  Loop systems  -  Mechanical force  -  Mechanical systems  -  Parametric models  -  Potato harvester   -  Pro/E software  -  Suspension devices
Classification code:723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  663.1 Heavy Duty Motor Vehicles  -  821.1 Agricultural Machinery and Equipment  -  632.2 Hydraulic Equipment and Machinery  -  608 Mechanical Engineering, General  -  601.2 Machine Components  -  632.1 Hydraulics
 Database:Compendex
   
43. Accession number:20113314234815
 Title:Modified skyhook damping control of multi-axial heavy truck suspension system
 Authors:Chen, Yikai1 ; He, Jie2 ; Zhang, Weihua1 ; Shi, Qin1 ; Chen, Wuwei3
Author affiliation: 1  School of Transportation Engineering, Hefei University of Technology, Hefei 230009, China
2  School of Transportation, Southeast University, Nanjing 210096, China
3  School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
 Corresponding author:Chen, Y. (leochen079307@hotmail.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:16-22
 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 modified skyhook damping (MSD) control strategy for multi-axial heavy truck suspension system based on orthogonal test was put forward. It could improve the road friendliness and ride comfort of the truck simultaneously, as a consequence, ride fatigue was alleviated and road life was prolonged. A multi-DOF model of four-axial heavy truck-road system was developed in ADAMS based on vehicle dynamics and functional virtual prototype (FVP), and the model was validated through a ride comfort test. In order to improve the truck performance preliminarily, proper air suspensions were chosen to replace the tandem suspension on the driving axles. Subsequently, semi-active, active MSD control were applied to the whole suspension system respectively using co-simulation of ADAMS and Matlab, and control parameters which ensured best integrated performance of the truck were chosen based on range analysis and variance analysis of orthogonal test. The simulation results indicated that ride comfort of the active MSD control truck was superior to the semi-active MSD control truck, however, the road friendliness were comparable. In addition, MSD control had a strong robustness to road level.
 Number of references:12
 Main heading:Suspensions (components)
Controlled terms:Automobile testing  -  Control system analysis  -  Damping  -  Drive axles  -  MATLAB  -  Roads and streets  -  Trucks  -  Vehicle springs
Uncontrolled terms:Air suspension  -  Control parameters  -  Control strategies  -  Cosimulation  -  Heavy truck  -  Multi-DOF  -  Orthogonal test  -  Range analysis  -  Ride comforts  -  Road friendliness   -  Semi-active  -  Simulation result  -  Sky-hook damping  -  Suspension system  -  Truck performance  -  Variance analysis  -  Vehicle dynamics  -  Virtual prototype
Classification code:921 Mathematics  -  731.1 Control Systems  -  663 Buses, Tractors and Trucks  -  931.1 Mechanics  -  662.4 Automobile and Smaller Vehicle Components  -  601.2 Machine Components  -  406.2 Roads and Streets  -  662 Automobiles and Smaller Vehicles
 Database:Compendex
   
44. Accession number:20113314234857
Title:Mechanism of micron dimension crack appeared on surface layer of crankshaft during forging
 Authors:Zhou, Jie1 ; Zhang, Guanghua1 ; Quan, Guozheng1
Author affiliation: 1  School of Material Science and Engineering, Chongqing University, Chongqing 400044, China
 Corresponding author:Zhou, J. (huabei0825@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:230-234
 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 experimental and numerical simulation, the mechanism of micron dimension crack of crankshaft appeared in the area of inner parting plan of rod journal and transition fillet was analyzed in the view of the billet inner freedom defects' transition during the forging. The billet was divided into two layers, named the outer higher quality layer and inner lower quality layer, and the corresponding finite element model of billet was built. The flow and distribution of two layers metal's during forging were simulated by Deform 3D and the trend of accumulate of inner defects was achieved as well as the influence law of forging velocity on two layers' flowing. The results showed that the inner low quality metal was distributed in the area of inner parting plan of rod journal and transition fillet and exposed on forging surface, which was the dangerous area. The metal on the cross section of rod journal flowing only at a direction intensified the trend of defect accumulating in the dangerous area. According to the experiment results, the micron dimension crack was a kind of hairline crack. The inclusion which contained MnS and MoS and transited into the surface of forging from inside of billet was extended along with the forming direction.
 Number of references:15
 Main heading:Upsetting (forming)
Controlled terms:Billets (metal bars)  -  Cracks  -  Crankshafts  -  Finite element method  -  Flowing wells  -  Forgings  -  Molybdenum compounds  -  Surface defects
Uncontrolled terms:Cross section  -  Dangerous area  -  Finite element models  -  Forging surfaces  -  Hairline cracks  -  Inner defects  -  Low qualities  -  Micron dimension  -  Micron dimension crack  -  Quality layers   -  Surface layers  -  Two layers
Classification code:921.6 Numerical Methods  -  804.1 Organic Compounds  -  601.2 Machine Components  -  535.2 Metal Forming  -  535.1.2 Rolling Mill Practice  -  512.2.2 Natural Gas Deposits: Development Operations  -  421 Strength of Building Materials; Mechanical Properties
 Database:Compendex
   
45. Accession number:20113314234834
Title:3-D numerical simulation of flow structure in miniature biomass circulating fluidized beds gasifier
Authors:Liu, Xin1 ; Chen, Wenyi1 ; Fan, Xiaoxu2 ; Xian, Jianwei3 ; Zhang, Jijun1 ; Sun, Jiao1
Author affiliation: 1  Chemical Process Mechanics Department, Hebei University of Technology, Tianjin 300130, China
2  Energy Research Institute of Shandong Acad. of Sci., Ji'nan 250014, China
3  School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China
 Corresponding author:Chen, W. (cwy63@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:112-116
 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:Entire 3-D numerical simulation was used to study the experimental device of miniature biomass circulating fluidized beds gasifier (CFBG). Mutual influence of each unit was taken in consideration in simulation. Euler dual fluid granular model, particle pulsation theory and Gidaspow momentum exchange model were used. The simulation showed the variations of 3-D gas-solid flow structures and distributions at different solid inventories. It formed a pressure loop over the height of reefed line orifice, and performed large scale axial circulations. It could not form obvious core-annulus structures over the height of reefed line orifice. The simulation results fit well with the experiment results.
 Number of references:8
 Main heading:Three dimensional
Controlled terms:Flow simulation  -  Flow structure  -  Fluidization  -  Fluidized bed process  -  Fluidized beds  -  Orifices  -  Particles (particulate matter)
Uncontrolled terms:3-D flow  -  3-D numerical simulation  -  Circulating fluidized bed  -  Core-annulus structure  -  Gas-solid flow structure  -  Gasifiers  -  Granular models  -  Momentum exchange  -  Simulation result
Classification code:951 Materials Science  -  931.1 Mechanics  -  902.1 Engineering Graphics  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  802.1 Chemical Plants and Equipment  -  723.5 Computer Applications  -  619.1 Pipe, Piping and Pipelines  -  533.1 Ore Treatment
 Database:Compendex
   
46. Accession number:20113314234842
 Title:Purification and activity identification of ginkgo antioxidant peptide
 Authors:Jia, Shaoqian1 ; Wu, Caie1 ; Fan, Gongjian1 ; Li, Tingting1
Author affiliation: 1  College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
 Corresponding author:Wu, C. (sxwucaie@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:6
 Issue date:June 2011
 Publication year:2011
 Pages:152-155
 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 separate and prepare ginkgo antioxidant peptide, Sephadex G-25 gel filtration chromatography, Sephadex G-10 gel filtration chromatography and reverse phase-high performance liquid chromatography (RP-HPLC) were used to purify ginkgo peptide. The purity of the ginkgo peptide was confirmed by HPLC. Liquid chromatography quadrupole time of flight mass showed that the relative molecular mass was 452.21 Da. Results of antioxidation test indicated that ginkgo antioxidant peptides exhibited strong scavenging capability to hydroxyl radicals and DPPH radicals with the scavenging rates reached to 80.26% and 83.57%, respectively.
 Number of references:14
 Main heading:Peptides
Controlled terms:Chromatography  -  Dextran  -  Filtration  -  Gel permeation chromatography  -  Gels  -  High performance liquid chromatography  -  Ion exchange  -  Liquids  -  Mass spectrometry  -  Position control   -  Purification  -  Scavenging
Uncontrolled terms:Anti-oxidation  -  Antioxidant peptides  -  Gel-filtration chromatography  -  Ginkgo  -  Hydroxyl radicals  -  Quadrupole-time of flights  -  Relative molecular mass  -  RP-HPLC  -  Scavenging rates  -  Sephadex   -  Time of flight mass spectrometer
Classification code:931.2 Physical Properties of Gases, Liquids and Solids  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  801 Chemistry  -  731.3 Specific Variables Control  -  612.1 Internal Combustion Engines, General  -  461.9 Biology
 Database:Compendex
   

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