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2008年第39卷第6期共收录45篇

 1.  Accession number:082911385525
Title:Tire condition and vehicle load testing integrated technology
based on wireless communication
Authors:Meng, Qinghua; Zhao, Wenli; Guo, Liping
Author affiliation:Hangzhou Dianzi University, Hangzhou 310018,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 46-49
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: According to the study on tire load variation when vehicle was running and the relationship of tire load, pressure and temperature, a mathematics model was presented based on the tire load, pressure and temperature. The model could decide whether the tire loads exceed allowable range by means of tire pressure and temperature. By adopting the theory, a tire condition and vehicle load testing system was designed. The system could test vehicle tire temperature and pressure through sensors in the tires. The system decided whether the vehicle was in danger condition and gave suggestions. If the vehicle run exceeding allowable load long time, the system would transfer correlative information to traffic control office through wireless communication networks, thus overload could be avoided. According to the test, the theory was proved to be correct and the system is useful.
Number of references:8
Ei main heading:Tires
Ei controlled terms:Load testing  -  Mathematical models  -Telecommunication  -  Testing  -  Time domain analysis  -  Vehicles Uncontrolled terms:Tire load  -  Vehicle loads  -  Pressure and temperature  -  Mathematics model  -  Testing systems  -  Wireless(WiFi) communication  -  Tire pressure  -  Wireless communication networks  -  Test vehicles  -  Tire temperature   -  Correlative information  -  Long time  -  Allowable range  -  Integrated technologies
Ei classification codes:422.2 Test Methods  -  432 Highway Transportation  -  716 Telecommunication; Radar, Radio and Television  -  818.5 Rubber Products  -  921 Mathematics
Database:Compendex
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 2.  Accession number:082911385526
Title:Statistical distribution model of field reliability based on
phased weibull distribution
Authors:Zheng, Jianxiang; Gao, Xiang; Zhou, Mingfeng
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society
of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 50-53
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: The statistical distribution model of field reliability of system or component is the key to synthetically optimize the maintenance and repair policy, spare parts inventory/indent and maintenance resource. Six types of Weibull distribution models that often used in the analysis of reliability were expounded. And the way to set up the statistical distribution model of field reliability, the calculation of goodness of fit indicator and the comparison of fit goodness of different distribution functions, the Χ2 fit checkup have been studied as well. And the statistical distribution model of field reliability of a whole automobile was set up.
Number of references:13
Ei main heading:Public key cryptography
Ei controlled terms:Distribution functions  -  Maintenance  -Reliability analysis  -  Reliability  -  Repair  -  Statistical methods  -  Weibull distribution Uncontrolled terms:Field reliability  -  Statistical distribution model  -  Weibull  -  Goodness of fit (GOF)  -  Spare parts  -Distribution models  -  Distribution functions ]  -  Repair policy
Ei classification codes:421 Strength of Building Materials; Mechanical Properties  -  422.2 Test Methods  -  716 Telecommunication; Radar, Radio and Television  -  913.5 Maintenance -  922.1 Probability Theory  -  922.2 Mathematical Statistics
Database:Compendex
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 3.  Accession number:082911385527
Title:Numerical simulation of erosion and particle motion trajectory
in centrifugal pump
Authors:Liu, Juan; Xu, Hongyuan; Tang, Shu; Lu, Li
Author affiliation:China Institute of Water Resource and Hydropower
Research, Beijing 100038, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society
of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 54-59
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Based on Lagrangian tracking of solid particles' motion trajectories in a solid-fluid flow field, by applying Finnie ductile materials erosion model, Reynolds stress model and discrete phase model to the continuous phase and dispersed phase, the solid-liquid erosion and motion trajectory of solid particle and the impact progress between solid particle and machine surface were simulated successfully. The volume content of solid phase in two-phase flow was lower than 10% in this simulation model. According to the simulation result, the related parameters of solid particle, such as density and diameter, and rotational speed of impeller greatly influenced the motion trajectory and the impaction with machine surface of solid particle. The solid particle with large mass was apt to move toward to the working surface and impacted the inlet head of impeller. By contraries, little particle was liable to impact the rear-end surface of impeller near to the outlet side. The large solid particle could repeatedly impact machine surface easier than the little particle. The numerical simulation result was verified by a comparison experimental analysis result.
Number of references:12
Ei main heading:Liquid phase epitaxy
Ei controlled terms:Centrifugal pumps  -  Computer simulation  -Erosion  -  Flow of fluids  -  Flow simulation  -  Fluid dynamics  -Fluid mechanics  -  Hydraulic machinery  -  Multiphase flow  -Packet networks   -  Pumps  -  Reynolds number  -  Soil mechanics  -
Surfaces  -  Trajectories  -  Two phase flow Uncontrolled terms:Solid particles  -  Motion trajectories  - Numerical simulations  -  Experimental analysis  -  Ductile
materials  -  Solid liquid  -  Dispersed phase  -  Fluid flow field-  Lagrangian tracking  -  Continuous phase   -  Simulation results-  Simulation modelling  -  Rotational speeds  -  Discrete phase model (DPM)  -  Two-phase flow (2PF)  -  Solid-phase  -  Volume
contents  -  Reynolds stress model (RSM)  -  Erosion modelling  -
Particle motions
Ei classification codes:404.1 Military Engineering  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  483.1 Soils and Soil Mechanics  -  618.2 Pumps  -  631.1 Fluid Flow, General  -632.2 Hydraulic Equipment and Machinery  -  716 Telecommunication;
Radar, Radio and Television  -  723.5 Computer Applications  -931.1 Mechanics  -  933.1.2 Crystal Growth  -  951 Materials Science

Database:Compendex
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 4.  Accession number:082911385528
Title:Numerical investigation of unsteady pressure fluctuations near
volute tongue in a double-suction centrifugal pump
Authors:Cong, Guohui; Wang, Fujun
Author affiliation:China Agricultural University, Beijing 100083,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 60-63 67
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: The pressure fluctuation of turbulent flow, especially near the volute tongue in a double-suction centrifugal pump, is the primary reason of pump vibration and noise. This unsteady flow feature was investigated by large eddy simulation (LES) method with sliding mesh technology. The results showed that the blade passing frequency dominated the pressure fluctuations near the volute tongue at the design and large flow rate condition. At the small flow rate condition, the frequency which was lower than the blade passing frequency became dominative in the pressure fluctuations. The amplitude of the pressure fluctuation became higher when the flow rate was farer from the design flow rate. At the 62%, 80% and 120% of design flow rate conditions, the pressure fluctuation amplitudes were respectively 219%, 105% and 205% larger than the amplitude at design flow rate.
Number of references:11
Ei main heading:Flow simulation
Ei controlled terms:Centrifugal pumps  -  Combustors  -  Eddy currents  -  Flow rate  -  Fluid dynamics  -  Fluid mechanics  -Hydraulic machinery  -  Large eddy simulation  -  Pumping plants  -Pumps   -  Rotary pumps  -  Theorem proving  -  Turbulence
Uncontrolled terms:Pressure fluctuations  -  Design flow rate  -Blade passing frequency (BPF)  -  Sliding mesh  -  Large Eddy simulation (LES) method  -  Large flow rate  -  Flow features  -Pump vibrations  -  Unsteady pressures  -  Numerical investigations
Ei classification codes:443.1 Atmospheric Properties  -  446 Waterworks  -  521.2 Combustors  -  618.2 Pumps  -  631 Fluid Flow-  631.1 Fluid Flow, General  -  632.2 Hydraulic Equipment and Machinery  -  701.1 Electricity: Basic Concepts and Phenomena  -721.1 Computer Theory, Includes Formal Logic, Automata Theory,Switching Theory, Programming Theory  -  931.1 Mechanics
Database:Compendex
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 5.  Accession number:082911385529
Title:Design of air-resistance regulator for oil-gas multiphase pump
Authors:Mu, Jiegang; Zhang, Shengchang; Shao, Wene; Zheng, Shuihua;Huang, Xinhua; Deng, Hongying
Author affiliation:Zhejiang University of Technology, Hangzhou 310032, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 64-67
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Air-resistance phenomenon usually exists in oil-gas multiphase pump. In order to solve the air-resistance phenomenon, a scheme of designing an air-resistance regulator was purposed after detailed analysis. Based on the theoretic analyzing and practical testing, the design method of air-resistance regulator was summarized and concluded. Finally, a prototype of the designed air-resistance regulator was manufactured. The operation assessment results showed that the prototype can meet the needs of poor conditions.
Number of references:11
Ei main heading:Oil resistance
Ei controlled terms:Health  -  Oil well pumps  -  Pumps
Uncontrolled terms:Multiphase pumping  -  Design methods
Ei classification codes:461.6 Medicine and Pharmacology  -  511.2 Oil Field Equipment  -  618.2 Pumps  -  801 Chemistry
Database:Compendex
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 6.  Accession number:082911385530
Title:Design and experiment on powered disc no-tillage planter for ridge-tillage
Authors:Wang, Qingjie; He, Jin; Yao, Zonglu; Li, Hongwen; Li,Wenying; Zhang, Xuemin
Author affiliation:China Agricultural University, Beijing 100083,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 68-72
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract:The powered-disc ridge till and no-till planter was designed to solve the problems of straw blocking, high energy consumption of strip rototilling and unstable operation on ridges in current no-tillage maize planting in ridge tillage areas of northeast China. The machine used the combined device of powered-disc and depth control wheel to cut the stubble, open seed furrow and stabilize in planting, and the key parameters of the device were analyzed and determined. The field experiment showed that the powered-disc ridge till and no-till planter was effective in anti-blocking and cutting stubble. The broken stubble depth was about 87 mm and the separation space between seed and fertilizer was approximately 48 mm, which met the agronomic requirements. Furthermore, the openers seeded and fertilized in the furrow opened by powered disc, thereby decreased soil disturbance and power consumption. The powered-disc ridge till and no-till planter reduced fuel consumption by 8.5% and soil disturbance by 50%, respectively compared to the strip-rototilling ridge till and no-till planter.
Number of references:8
Ei main heading:Agriculture
Ei controlled terms:Agricultural machinery  -  Agricultural products-  Energy policy  -  Experiments  -  Seed  -  Separation  -  Soils
Uncontrolled terms:No till (NT)  -  Soil disturbances  -  No tillage (NT)  -  Depth control  -  Power consumption (CE)  -  Northeast China  -  Separation space  -  Field experiments  -  Key parameters -  Ridge tillage   -  High energies
Ei classification codes:483.1 Soils and Soil Mechanics  -  525.6 Energy Policy  -  802.3 Chemical Operations  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.1 Agricultural Machinery and Equipment  -  821.4 Agricultural Products
-  901.3 Engineering Research
Database:Compendex
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 7.  Accession number:082911385531
Title:Multi-objects fuzzy optimization of stubble working parameters
Authors:Wei, Tianlu; Zhou, Haibo; Yang, Hai; Wang, Junfa
Author affiliation:Jiamusi University, Jiamusi 154007, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 73-76
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract:Based on the field experiment, and by means of theoretical analysis, uniform design and the data quasi-level processing method,the multi-objects fuzzy optimization mathematical model, which uses the stubble cleaner's high production efficiency and low power consumption as the goal, uses the machine advance speed, cutter rotating speed and machine width as the working parameters, are developed. The regulation about how the working parameters of stubble cleaner affect the goal is put forward. When the machine width is a fixed value, the goal level will be increased fast with the increasing of the machine advance speed and increased with the increasing of the cutter rotating speed; when the cutter rotating speed is a fixed value, the goal level will be increased fast with the increasing of the advance speed and increased slowly with the spreading of the machine width; when the advance speed is a fixed value, the goal level will be decreased slowly with the spreading of the machine width and the increasing of the cutter rotating speed. The optimization is conducted in the feasible area which is limited by the constraint conditions. The best working parameters of the machine width is 1.42 m, the cutter rotating speed is 406 r/min and the advance speed is 1.5 m/s.
Number of references:7
Ei main heading:Speed
Ei controlled terms:Constrained optimization  -  Data processing  -Electric network analysis  -  Fuzzy logic  -  Machine design  -Mathematical models  -  Optimization  -  Rotating machinery  -Rotation Uncontrolled terms:Rotating speeds  -  Working parameters  -Multi-objects  -  Fuzzy optimization  -  Processing methods  -Low-power consumption  -  Constraint conditions  -  Production efficiencies  -  Uniform Design (UD)  -  Field experiments
Ei classification codes:601 Mechanical Design  -  601.1 Mechanical Devices  -  703.1.1 Electric Network Analysis  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.2 Data Processing and Image Processing  -921 Mathematics  -  921.5 Optimization Techniques  -  931.1 Mechanics  -  961 Systems Science
Database:Compendex
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 8.  Accession number:082911385532
Title:Variable-rate continuous spray equipment based on PWM technology and its spray characteristics
Authors:Deng, Wei; Ding, Weimin
Author affiliation:Nanjing Agricultural University, Nanjing 210031,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 77-80
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: A set of variable-rate continuous spray equipment was developed by using the proportional regulating solenoid valve based on pulse-width modulation (PWM) technology. The effects of this variable-rate spray equipment on spray characteristics were studied.It was concluded that the flow regulating range of this set was wide. The flow regulating range for the flat-fan nozzle was about 7:1. When the spray flow-rate was reduced through decreasing the duty cycle, the degree of spray dispersion was changed significantly. The spray distribution concentrated toward the center obviously and the spray angle became smaller. But the effects of the flow control on spray droplet diameter were slight. The spray droplet size decreased slightly with the flow decreasing.
Number of references:14
Ei main heading:Pesticides
Ei controlled terms:Counting circuits  -  Drop formation  -  Drops -  Fluid mechanics  -  Modulation  -  Pulse modulation  -  Pulse width modulation  -  Spraying
Uncontrolled terms:Spray equipment  -  Spray characteristics  - Droplet diameters  -  Spray angles  -  Spray distribution  -  Spray dispersion  -  Duty cycles  -  Spray flow  -  Fan nozzles  -  Pulse width modulation (QuadPWM)   -  Droplet sizes  -  Solenoid valves
Ei classification codes:443.1 Atmospheric Properties  -  713.4 Pulse Circuits  -  716 Telecommunication; Radar, Radio and Television  - 803 Chemical Agents and Basic Industrial Chemicals  -  813.1 Coating Techniques  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids
Database:Compendex
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 9.  Accession number:082911385533
Title:Measurement the spatial angle of square knotter on the basis of reverse engineering
Authors:Su, Gang; Shi, Jianxin; Ge, Ju
Author affiliation:Xinjiang Agricultural University, Urumqi 830052, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 81-83
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Knotter is the key part of square baler, and the design difficulty is the angle measurement between 5 shaft hole, that is because five shaft holes is non-paralleling, also non-crossing, the conventional methods is difficult to be used to measure the space angles. An improved parameterization definition is used to construct geometric distance functions of cylinder; secondly the nonlinear least squares solution is used to fit the cylinder in Imageware12. The fitted cylinders are introduced into UGNX3 to express the space angles in three-face projection way.
Number of references:5
Ei main heading:Cylinders (shapes)
Ei controlled terms:Angle measurement  -  Curve fitting  -  Least squares approximations  -  Reengineering  -  Reverse engineering
Uncontrolled terms:Geometric distances  -  Non-linear least squares-  Conventional methods
Ei classification codes:408.2 Structural Members and Shapes  -  723 Computer Software, Data Handling and Applications  -  913.3 Quality Assurance and Control  -  921.6 Numerical Methods  -  943.2 Mechanical Variables Measurements
Database:Compendex
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 10.  Accession number:082911385534
Title:Numerical simulation and optimization for air flow in an impeller blower
Authors:Zhai, Zhiping; Wang, Chunguang
Author affiliation:Inner Mongolia Agricultural University, Huhhot 010018, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 84-87
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Poor air flow patterns and vortices can affect the efficient flow of forage. To improve the working efficiency of an impeller blower, the 3D air flows in the impeller blower of a 9R40 rubbing and breaking machine was numerically simulated and analyzed with computation fluid dynamics (CFD) software Fluent 6.3. Then the numerical simulated results of air flow velocities in the blowing pipe were compared with their testing results to validate the reliability of the numerical simulated results. At the same time, some main geometrical parameters were simulated, which included the numbers of blade, the mounting angle of blade, the shape of housing and the arc-radius of outlet of housing etc. The optimum results were obtained according to the simulated results. The study results showed that with 4-blade, blades slanted backwards, and circular housing, impeller blowers produced more efficient air flow respectively than impeller blowers with 3-blade, blades slanted forwards and radial blades, and non-circular housing.
Number of references:7
Ei main heading:Blowers
Ei controlled terms:Air  -  Blow molding  -  Compressors  -Computer simulation  -  Dynamics  -  Flow patterns  -  Flow simulation  -  Fluid dynamics  -  Fluid mechanics  -  Housing
Uncontrolled terms:Air flows  -  Simulated results  -  Non circular -  Software FLUENT  -  Air flow patterns  -  Geometrical parameters -  Testing results  -  Working efficiency  -  Numerical simulations
Ei classification codes:403.1 Urban Planning and Development  - 618.1 Compressors  -  618.3 Blowers and Fans  -  631.1 Fluid Flow, General  -  723.5 Computer Applications  -  804 Chemical Products Generally  -  816.1 Processing of Plastics and Other Polymers  - 931.1 Mechanics
Database:Compendex
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 11.  Accession number:082911385535
Title:Stability analysis of cross direction moving on the sloping ground for walking mobile excavator
Authors:Han, Jun; Tao, Li; Chen, Gaojie; Zhao, Chuming
Author affiliation:The First Engineers Scientific Research Institute, General Armaments Department, Wuxi 214035, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 88-93
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: For the purpose of analyzing the stability of walking mobile excavator, which moving cross direction on the sloping ground, a static model including multi-degree system for working mechanism and chassis mechanism was described, and the additional inertia moment of working device during its rotating was also considered. A mathematical model of multi-objective optimization for the stability of walking mobile excavator was constructed. The utility function method was employed to solve the optimal model. The maximum degree of slope and state parameters of working mechanism and the chassis were optimized. The results showed that the proposed method has its merits, such as simple and reliable, and it could provide theoretical basis for confirming the cross direction moving parameters of the walking mobile excavators and safety controlling.
Number of references:9
Ei main heading:Excavators
Ei controlled terms:Construction equipment  -  Excavation  - Mathematical models  -  Mechanisms  -  Mining machinery  - Multiobjective optimization  -  Optical bistability  -  Optimization-  System stability
Uncontrolled terms:Cross direction (CD)  -  Sloping ground  - Working mechanisms  -  Stability of walking  -  Optimal modeling  - Utility functions  -  Static modelling  -  Multi objective optimization (MOP)  -  Maximum (weighted) degree  -  Working devices-  State parameters  -  Inertia moments  -  Stability analysis
(IGC: E5/E13)
Ei classification codes:405.1 Construction Equipment  -  405.2 Construction Methods  -  502.2 Mine and Quarry Equipment  -  601.3 Mechanisms  -  741.1.1 Nonlinear Optics  -  921 Mathematics  - 921.5 Optimization Techniques  -  961 Systems Science
Database:Compendex
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 12.  Accession number:082911385536
Title:Development on crankshaft fatigue reliability analysis software of reciprocating pump
Authors:Ye, Xiaoyan; Jiang, Xiaoping; Xu, Jianqiang; Hu, Jingning
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 94-97 72
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: In order to improve the design of reciprocating pump, two design methods on fatigue reliability, which are based on the most hazardous cross-section and finite element analysis respectively, were put forward. A practical object-oriented application software about fatigue reliability analysis on pump crankshaft was developed by several senior programming technologies via VC 6.0. By this software, the fatigue reliability analysis can be fulfilled by two approaches and six methods. Calculating example and practical applications indicated that this software have a lot of merits such as friendly interfaces, simply and reliable operation, high precision and good application prospect.
Number of references:12
Ei main heading:Reliability
Ei controlled terms:Computer software  -  Crankshafts  -  Finite element method  -  Object oriented programming  -  Pumps  -  Quality assurance  -  Reciprocating pumps  -  Reliability analysis  - Software reliability
Uncontrolled terms:Fatigue reliability  -  Ap plication prospect  - Application softwares  -  Object oriented (OO)  -  VC 6.0  - Reliable operations  -  High precision  -  Finite element analysis(FEA)  -  Design methods
Ei classification codes:421 Strength of Building Materials; Mechanical Properties  -  422.2 Test Methods  -  601.2 Machine Components  -  618.2 Pumps  -  723 Computer Software, Data Handling and Applications  -  723.1 Computer Programming  -  723.5 Computer Applications  -  913.3 Quality Assurance and Control  -  921.6 Numerical Methods
Database:Compendex
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 13.  Accession number:082911385537
Title:Optimization of extraction conditions in alkaline solution for hypsizigus marmoreus mycelium polysaccharide
Authors:Fu, Juanni; Liu, Xinghua; Cai, Fudai; Li, Shunfeng; Lu, Hui
Author affiliation:Northwest A and F University, Yangling 712100,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 98-101 93
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Based on design-expert statistic system, extraction conditions including temperature, time, the ratio of alkaline solution and mycelium, and the volume ratio of alcohol and alkaline solution were optimized for mycelium polysaccharide by center composition design. The results showed that quadratic model was the best model to describe the relationship between the extraction rate of polysaccharide and the factors. R-squared adjusted value of the model was 0.9495, and the simulated coefficient R was 0.9847. By response surface methodology (RSM), we found that when temperature, time, the ratio of alkaline solution and mycelium, and the volume ratio of alcohol and alkaline solution respectively were 73-76°C, 2.6-3.5 h, 18.25-25 mL/g and 2.5-3.5, the lowest extraction rate of polysaccharide was 4.45%. When temperature, time, the ratio of alkaline solution and mycelium, and the volume ratio of alcohol and alkaline solution separately were 76°C, 3.24 h, 23 mL/g and 3.5, the extraction rate of polysaccharide would reach 5.23%, a highest value in our investigation extension.
Number of references:5
Ei main heading:Extraction
Ei controlled terms:Optimization  -  Polysaccharides
Uncontrolled terms:Alkaline solutions  -  Extraction rates  - Volume ratios  -  Extraction conditions  -  Response surface methodology (RSA)  -  Quadratic modeling  -  Composition design
Ei classification codes:802.3 Chemical Operations  -  804.1 Organic Compounds  -  921.5 Optimization Techniques
Database:Compendex
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 14.  Accession number:082911385538
Title:Comparative experiment on hot-air, microwave-convective and microwave-vacuum drying of mushroom
Authors:Yang, Wei; Ou, Youcheng; Zhang, Fujie; Qi, Yafeng; Jin, Xuehua
Author affiliation:Kunming University of Science and Technology, Kunming 650224, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 102-104 112
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: A comparative experiment on the hot-air (HA),microwave-convective (MWC) and microwave-vacuum (MWV) drying of mushroom has been done. In hot-air drying, the temperature was 60°C when the velocity of air was kept at 1 m/s; in microwave-convective drying, the temperature of the inlet air was set at 60°C with the same velocity of 1 m/s; in microwave-vacuum drying, the vacuum level was set at 5.1 kPa(absolute pressure). In both cases the microwave power density was set at 0.5 W/g. The curves of moisture content versus drying time were established to compare the drying data. The internal temperature profiles of mushrooms were presented for MWC, MWV and HA drying. Color and re-hydration attributes were measured to evaluate the quality of dried mushrooms. The results showed that using microwave to dry mushrooms resulted in a reduction in the drying time, while using vacuum drying decreased the product temperature and improved product quality.
Number of references:9
Ei main heading:Curing
Ei controlled terms:Biological materials  -  Dewatering  -  Drying -  Experiments  -  Fungi  -  Hydroxylation  -  Microwave heating  - Microwaves  -  Vacuum
Uncontrolled terms:Hot air  -  Microwave-vacuum drying  -  Drying time  -  Re hydration  -  Internal temperature  -  Inlet air  - Moisture content (MC)  -  Microwave power density (MWP)  -  Absolute pressures  -  Vacuum drying   -  Vacuum levels  - Microwave-convective drying  -  Product qualities  -  Hot air drying
Ei classification codes:461.2 Biological Materials and Tissue Engineering  -  461.9 Biology  -  633 Vacuum Technology  -  642.1 Process Heating  -  711 Electromagnetic Waves  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  901.3 Engineering
Research
Database:Compendex
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 15.  Accession number:082911385539
Title:Experiment on the technology of pulse glare sterilization
Authors:Ding, Wenyan; Ma, Fengming; Xu, Jiangning; Jiang, Lu; Li, Jiaqiang
Author affiliation:Shenyang Agricultural University, Shenyang 110161, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 105-108
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The pulse glare sterilization is a kind of new technology. The design of experimental equipment and its detecting system were finished. The pulse xeon was taken as a light source. Its input voltage was 0.8 to 3 kV. The primary experiments have been done by the equipment to a special bacterium. The results showed that flash frequency, input voltage, bacterium liquid depth and relative transmittance are the main factors. The sterilizing rate could reach 100% when the values of these factors were increased. And the effects of pulse glare sterilization are very remarkable. This equipment can be applied in the processing and storage of agricultural products.
Number of references:10
Ei main heading:Sterilization (cleaning)
Ei controlled terms:Agricultural products  -  Data storage equipment -  Experiments  -  Glare  -  Light sources  -  Light  -  Lighting -  Technology
Uncontrolled terms:Input voltages  -  Detecting systems  - Experimental equipments  -  Main factors  -  New technologies
Ei classification codes:462.1 Biomedical Equipment, General  -  707 Illuminating Engineering  -  707.2 Electric Lamps  -  722.1 Data Storage, Equipment and Techniques  -  741.1 Light/Optics  -  821.4 Agricultural Products  -  901 Engineering Profession  -  901.3
Engineering Research
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 16.  Accession number:082911385540
Title:Investigation of infrared technology on blanching and dehydration of farm products
Authors:Li, Shujun; Lin, Yaling; Pan, Zhongli
Author affiliation:Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 109-112
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Infrared radiation has strong heat selectivity. The absorptivity of the heated object is higher than the around air, so only the object is heated while the temperature of the environment just raises a little. Also infrared heating has the characteristics such as uniform heating, heat penetration, higher energy and processing efficiencies. For blanching and dehydration, the technology has the advantages of shorter time, quicker velocity, less energy consumption and enhancing final product quality. The characteristics of the infrared radiation technology on blanching and dehydration of farm product, the investigation of infrared technology on blanching and dehydration both at home and abroad were described. Further researches of this technology were pointed out.
Number of references:19
Ei main heading:Technology
Ei controlled terms:Bleaching  -  Dehydration  -  Dewatering  - Electromagnetic waves  -  Energy policy  -  Food preservation  - Heating  -  Infrared radiation  -  Radiometers
Uncontrolled terms:Infrared (IR)  -  Infrared technologies  - Energy consumption  -  Heat penetration  -  Final products  - Uniform heating  -  AB sorptivity
Ei classification codes:525.6 Energy Policy  -  643.1 Space Heating -  711 Electromagnetic Waves  -  741.1 Light/Optics  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  811.1.1 Papermaking Processes  -  822.2 Food Processing Operations  -  901 Engineering Profession  -  944.7 Radiation Measuring Instruments
Database:Compendex
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 17.  Accession number:082911385541
Title:Classification method of pearl luster degree based on HSL
Authors:Li, Ge; Li, Bin; Wang, Ying; Zhao, Yun; Zhang, Ruilin; Li, Jing
Author affiliation:Zhejiang Sci.-Technol. University, Hangzhou 310018, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 113-117
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Applying HSL (hue, saturation, luminance) color model transformation technology, the research of pearl luster degree classification has been done, and the pearl image was disposed after
transformed it from RGB color model to HSL color model. Then, according to the luminance message that has been received, fuzzy pattern recognition method was adopted to distinguish and classify, and at last the classification of pearl luster degree was realized.Afterwards, by giving correction and instruction, aiming at the evaluation method, the method was further perfected and its applicability was improved.
Number of references:13
Ei main heading:Optical properties
Ei controlled terms:Classification (of information)  -  Color  - Feature extraction  -  Gems  -  Luminance  -  Pattern recognition
Uncontrolled terms:Color modeling  -  RGB Color Model  -  Fuzzy pattern recognition  -  Evaluation methods  -  Classification methods
Ei classification codes:482.2.1 Gems  -  716 Telecommunication; Radar, Radio and Television  -  716.1 Information Theory and Signal Processing  -  741.1 Light/Optics
Database:Compendex
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 18.  Accession number:082911385542
Title:Pipe network optimization for maximal utilization rate of gravity head based on LCA
Authors:Fu, Yujuan; Cai, Huanjie
Author affiliation:Northwest A and F University, Yangling 712100, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 118-122
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Taking the utilization degree of gravity head, the design's utilization rate of pressure drop created by hypsography was evaluated by using two different expressions namely utilization rate of pipe gravity head and utilization rate of path gravity head as network optimization objective functions. Line-up competition algorithm (LCA) with the two means competition that between families and inside a family and little controls parameter was introduced in optimal design. The result testified by the case study, and the comparison between the method based on minimization of cost and genetic algorithm showed that the new method could obtain the optimal result and is superior in search efficiency.
Number of references:9
Ei main heading:Optimization
Ei controlled terms:Boolean functions  -  Competition  -  Extractive metallurgy  -  Genetic algorithms  -  Gravitation  -  Gravitational effects  -  Life cycle  -  Pipe  -  Space heating
Uncontrolled terms:Gravity head  -  Search efficiency  -  Network optimization  -  Optimal designs  -  Line-up competition algorithm -  Objective function (OF)  -  Case studies  -  Rate of pressure  - Pipe networks
Ei classification codes:533.1 Ore Treatment  -  619.1 Pipe, Piping and Pipelines  -  643.1 Space Heating  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  911.2 Industrial Economics  -  913.1 Production Engineering  -  921.5 Optimization Techniques  -  931.5 Gravitation, Relativity and String Theory
Database:Compendex
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 19.  Accession number:082911385543
Title:Distributed control network for CAN-based autonomous agricultural robot
Authors:An, Qiu; Ji, Changying; Zhou, Jun; Zhao, Xianlei
Author affiliation:Nanjing Agricultural University, Nanjing 210031, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 123-126 117
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: CAN bus makes control system of agricultural machine networked, intelligent, and distributed because of its high data transmission rate, reliability and expandability. Distributed control network for CAN-based autonomous agricultural robot was designed. The objective was to present 4WD/4WS robot system structure and hardware structure and software design of CAN network in detail, and to prove it to be feasible that a controller area network (CAN bus) as the basis of an autonomous agricultural robot by the test of sending and receiving messages. Tests showed that CAN bus network could increase open and real-time of the robot system.
Number of references:8
Ei main heading:SCADA systems
Ei controlled terms:Agricultural machinery  -  Breeder reactors  -Buses  -  Control system synthesis  -  Control theory  -  Data communication systems  -  Distributed parameter control systems  - Machine design  -  Military data processing  -  Robotics   -  Robots
-  Software design  -  Testing
Uncontrolled terms:CAN Bus  -  Agricultural robots  -  Robot system -  Distributed controls  -  Controller area network (CAN)  - Hardware structures  -  Expandability  -  Data transmission rates
Ei classification codes:422.2 Test Methods  -  601 Mechanical Design -  621.1 Fission Reactors  -  663.1 Heavy Duty Motor Vehicles  - 723 Computer Software, Data Handling and Applications  -  723.1Computer Programming  -  723.2 Data Processing and Image Processing -  731.1 Control Systems  -  731.5 Robotics  -  821.1 Agricultural Machinery and Equipment
Database:Compendex
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 20.  Accession number:082911385544
Title:Visual navigation method based on genetic algorithm for agricultural mobile robots
Authors:Gao, Feng; Li, Yan; Mamoru, Minami; Huang, Yumei
Author affiliation:Xi'an University of Technology, Xi'an 710048,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 127-131
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: In order to ensure recognizing crop row automatically with some robustness against noise environment and to confirm its possible intelligence for an agriculture mobile robot working in the fields, a crop row recognition method was presented by using genetic algorithm with surface-strip model to detect the crop row imaged in the gray scale image without any preprocessing. The accuracy and stability of the proposed visual recognition of crop raw with high robustness against noise such as sunlight condition varieties and obstacles were demonstrated by artificial image and real image scanning. The robustness of the method against environmental noises and the effectiveness of the method for real-time recognition have been verified by using real rural images.
Number of references:10
Ei main heading:Crops
Ei controlled terms:Algorithms  -  Boolean functions  -  Genetic algorithms  -  Mobile robots  -  Nonlinear control systems  - Robotics  -  Robots
Uncontrolled terms:Robustness against noise  -  Recognition methods -  Strip model  -  Gray-scale images  -  Visual recognition  -  High robustness  -  Artificial image  -  Real images  -  Real-time recognition  -  Visual navigation
Ei classification codes:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  731.5 Robotics  -  821.4 Agricultural Products
Database:Compendex
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 21.  Accession number:082911385545
Title:Online fault diagnosis system of AMT based on CAN bus and PSA model
Authors:Liu, Yingji; Zhang, Tianxia; Wen, Bangchun; Cao, Wanke
Author affiliation:Northeastern University, Shenyang 110004, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 132-136 122
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: For the sake of fault diagnosis and maintenance problems of automated manual transmission (AMT), an online fault diagnosis system was established based on CAN bus and PSA (PCA-subtractive clustering-ANFIS) model. The original sample data of AMT fault diagnosis was derived from sensors of electronic control utilities (ECU) and transmitted on CAN bus. Principal component analysis (PCA) was used to reduce correlations and dimensions of input variables. An original fuzzy inference model was built by using subtractive clustering algorithm, on which an adaptive-network-based fuzzy inference system (ANFIS) was based and adopted to build a new type fault diagnosis model. Experimental result showed that combined with CAN bus, PSA model is effective, and both of its fitting ability and convergence speed are superior to PCABP network model.
Number of references:12
Ei main heading:Principal component analysis
Ei controlled terms:Adaptive algorithms  -  Blood vessel prostheses -  Breeder reactors  -  Buses  -  Cluster analysis  -  Clustering algorithms  -  Electric fault currents  -  Electronics industry  - Fault tolerant computer systems  -  Financial data processing   - Flow of solids  -  Fuzzy clustering  -  Fuzzy inference  -  Fuzzy logic  -  Fuzzy systems  -  Inference engines  -  Peeling  -  Power electronics  -  SCADA systems
Uncontrolled terms:CAN Bus  -  Fault diagnosis (FD)  -  Fault diagnosis systems  -  Subtractive clustering  -  Input variables  -Principal component analysis (PCA)  -  Convergence speeds  -  Fuzzy inference model  -  Electronic controls  -  Fault diagnosis model -  Adaptive network-based fuzzy inference system (ANFIS)  - Original sample  -  Automated manual transmissions  -  Network modelling  -  Maintenance problems
Ei classification codes:462.4 Prosthetics  -  621.1 Fission Reactors -  663.1 Heavy Duty Motor Vehicles  -  701.1 Electricity: Basic Concepts and Phenomena  -  712 Electronic and Thermionic Materials -  713.5 Other Electronic Circuits  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  722.4 Digital Computers and Systems  -  723 Computer Software, Data Handling and Applications  -  723.4.1 Expert Systems  -  731.1 Control Systems  -  804.1 Organic Compounds  - 903.1 Information Sources and Analysis  -  911.1 Cost Accounting  - 922.2 Mathematical Statistics  -  931.1 Mechanics  -  961 Systems Science
Database:Compendex
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 22.  Accession number:082911385546
Title:Simultaneous topology optimization of structure and supports based on SIMP and SSV
Authors:Zhou, Xiangyang; Chen, Liping; Huang, Zhengdong
Author affiliation:Huazhong University of Science and Technology, Wuhan 430074, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 137-141 131
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: In the results of topology optimization with SIMP (solid isotropic material with penalization model), there are always some grey areas with intermediate densities. The intermediate densities of supports will have an effect on the topologies of structure and support. In order to drive the solution to a 0/1 layout a new constraint, labeled the sum of squares of the variables (SSV) was introduced for the first time. The constraint stipulated that the SSV must be larger or equal to its value at a discrete design for a specified amount of material. Based on the SIMP approach and the SSV constraint, a two-pass method has been proposed, where SIMP was employed to generate an intermediate solution to initialize the design variables and SSV was then adopted to produce the final design. In SSV stage, the design variables were still the densities of the finite elements but Young's modulus was a linear function of these densities (in some sense, a SIMP material without penalty). The potential of the present method has been demonstrated by simultaneous topological design of structure and support for minimum compliance. The examples showed that the hybrid technique could effectively remove all intermediate densities of support, whose effects were eliminated accordingly, and generate stiffer optimal designs characterized with a sharper boundary in contrast to SIMP.
Number of references:10
Ei main heading:Structural optimization
Ei controlled terms:Finite element method  -  Optimization  - Topology
Uncontrolled terms:Intermediate densities  -  Design variables  - Topology optimization (TO)  -  Minimum compliance  -  Present method -  Sum of squares (SOS)  -  Linear functions  -  Topological designs  -  Young's modulus (IGC: E14/K14)  -  Hybrid techniques   - Optimal designs  -  Finite element (FE)  -  Solid isotropic material
Ei classification codes:921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  921.5 Optimization Techniques  -  921.6 Numerical Methods
Database:Compendex
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 23.  Accession number:082911385547
Title:Influence and correction of systematic error of measurement system on acoustic holography reconstruction precision
Authors:Lu, Yimin; Liu, Zhengshi; Chen, Xiaodong; Chen, Xinzhao
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 142-145 188
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The error of complex sound pressure measured on acoustic holograph plane due to error of acoustical holograph measurement system, amplitude error and phase mismatch between different measuring channels, was analyzed, and an approximate error correction expression of holographic reconstruction was deducted. A correction method based on measuring system transfer function was proposed to correct the holographic data, by means of this method, a concise reconstruction's error expression could be obtained and there was a simple real proportion's relation between the true value of sound field reconstruction, estimate of sound field reconstruction and error of reconstruction. The effectiveness of educed error expression and error correction method were proved through numerical simulation.
Number of references:11
Ei main heading:Error correction
Ei controlled terms:Acoustic field measurement  -  Acoustic fields -  Acoustic holography  -  Acoustic imaging  -  Acoustics  - Computer simulation  -  Data recording  -  Electromagnetic wave attenuation  -  Error analysis  -  Holographic interferometry   -
Holography  -  Imaging techniques  -  Interferometry  -  Laser recording  -  Photonics  -  Repair  -  Restoration  -  Transfer functions  -  Video streaming  -  Wave effects
Uncontrolled terms:Sound fields  -  Correction methods  - Measurement systems  -  Holographic reconstruction  -  Phase mismatching  -  Sound pressures  -  True value  -  Measuring systems -  Amplitude errors  -  Numerical simulations   -  Systematic (CO)
Ei classification codes:402 Buildings and Towers  -  711 Electromagnetic Waves  -  716 Telecommunication; Radar, Radio and Television  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  - 741.1 Light/Optics  -  743 Holography  -  743.1.2 Acoustic Holography  -  743.2 Holographic Applications  -  744.9 Laser Applications  -  746 Imaging Techniques  -  751 Acoustics, Noise. Sound  -  751.2 Acoustic Properties of Materials  -  913.5 Maintenance  -  921 Mathematics  -  921.6 Numerical Methods  - 941.4 Optical Variables Measurements
Database:Compendex
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 24.  Accession number:082911385548
Title:Multi-modal sampling methods for large wheel diameter measurement based on multi-rollers method
Authors:Xu, Congyu; Yu, Xiaofen; Wang, Biao
Author affiliation:Hefei University of Technology, Hefei 230009,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 146-149 158
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Severe demands on measuring circuits for the multi-rollers method are needed compared with single-roller method in the measurement of large wheel diameter. In view of the correction for engraving error of grating and the need for the correlated data analysis, a novel multi-modal sampling technology for measuring grating signals based on double counters was put forward, the design of multi-modal sampling circuits was described in detail and the simulation results of distinguishing and rejecting skidding signals of large wheel were given, which indicated that by the multi-modal sampling technology with double counters, the weak skidding signals on very small areas of large wheel surface could be distinguished and the sampling data were reliable.
Number of references:6
Ei main heading:Sampling
Ei controlled terms:Error analysis  -  Error correction  -  Forward error correction  -  Painting  -  Rollers (machine components)  - Skidding  -  Statistical methods  -  Wheels
Uncontrolled terms:Multi-modal  -  Diameter measurements  - Correlated data  -  Simulation results  -  Sampling circuits  - Roller method  -  Sampling data  -  Sampling methods
Ei classification codes:601.2 Machine Components  -  662.1 Automobiles  -  716 Telecommunication; Radar, Radio and Television-  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  801 Chemistry  -  813.1
Coating Techniques  -  921.6 Numerical Methods  -  922.2 Mathematical Statistics
Database:Compendex
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 25.  Accession number:082911385549
Title:Dynamic characteristics of hydrostatic secondary control load simulation system and the approach to resist load disturbance
Authors:Hu, Jibin; Guo, Xiaolin; Yuan, Shihua; Peng, Zengxiong
Author affiliation:Beijing Institute of Technology, Beijing 100081,China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 150-153
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: In order to study the dynamic characteristics of the hydrostatic secondary control load simulation system, the numerical simulation models of secondary unit were given by using MSC.Easy5 software. It is an efficient way to describe state-oriented discontinuities and to facilitate efficient numerical integration of the secondary control systems. The comparative analysis of the results of numerical simulation and test on frequency response characteristic of speed controlled unit demonstrated the simulation models of secondary controlled system were adequately accurate. The speed variation for a jump in torque on a typical test bench where the speed controlled unit was coupling with the torque controlled one via specimen has been discussed. Simulation result showed that the mechanical coupling had little effect on hydrostatic secondary
control load simulation system. The speed variation of the speed controlled unit was mainly affected by load disturbance. Depending on the principle of structure invariance, an approximate
feed-forward compensator was designed to resist load disturbance and promote the control quality.
Number of references:5
Ei main heading:Quality control
Ei controlled terms:Computer simulation  -  Concurrency control  -Control systems  -  Equipment testing  -  Fluid mechanics  - Frequency response  -  Hydraulics  -  Hydrodynamics  -  Integration -  Numerical analysis   -  Speed  -  Testing
Uncontrolled terms:Secondary control  -  Load simulation  -  Load disturbances  -  Dynamic characteristics  -  Controlled systems  - Simulation modelling  -  Control quality  -  Frequency response characteristic  -  Numerical simulations  -  Feed forward (FF)   - Comparative analysis  -  Mechanical coupling  -  Simulation results -  Test benches  -  Numerical integrations  -  Numerical simulation models
Ei classification codes:422.2 Test Methods  -  631.1.1 Liquid Dynamics  -  632.1 Hydraulics  -  703.1 Electric Networks  -  723.3
Database Systems  -  723.5 Computer Applications  -  731.1 Control Systems  -  913.3 Quality Assurance and Control  -  921.2 Calculus -  921.6 Numerical Methods  -  931.1 Mechanics  -  941 Acoustical and Optical Measuring Instruments
Database:Compendex
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 26.  Accession number:082911385550
Title:Synthesis method of λ-formed linkages approximating a straight line
Authors:Qian, Weixiang; Han, Jianyou
Author affiliation:University of Science and Technology Beijing,Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 154-158
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: A λ-formed four-bar linkage to realize approximate straight tract was designed by using analytic method. A general synthesis model was established, and some key parameters in the equations were solved. By varying the design parameters, an infinite number of possible mechanical solutions can be represented, from which it is difficult for designers to select a satisfactory solution. To avoid aimlessness in choosing design parameters, the variable feasible areas could be computed and displayed with 3-D graph by applying numerical method and graphics technology. The property parameters, such as straight-line deviate tolerance, maximal link-length,mechanism type, have been compared and analyzed. The results of synthesis examples and property analysis verified the correctness and effectiveness of the proposed formulas and method.
Number of references:7
Ei main heading:Parameter estimation
Ei controlled terms:Graphic methods  -  Large scale systems  - Numerical methods  -  Solutions
Uncontrolled terms:Design Parameters (DP)  -  Four-bar linkages  - Key parameters  -  Satisfactory solution  -  Infinite numbers  - Analytic methods  -  Straight lines  -  Graphics technology  - Synthesis methods
Ei classification codes:723.5 Computer Applications  -  731.1 Control Systems  -  801 Chemistry  -  921.6 Numerical Methods  - 961 Systems Science
Database:Compendex
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 27.  Accession number:082911385551
Title:Numerical simulation study on water-lubricated hydrostatic journal bearings
Authors:Zhang, Jie; Guo, Hongsheng; Niu, Ben; Jiao, Rang
Author affiliation:University of Science and Technology Beijing, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 159-162
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Three dimensional pressure distribution and temperature field of the bear in water lubrication and its difference between the bear in oil lubrication were analyzed in numerical simulating through solving the law-of-the-wall and Reynolds equation with finite elements method (FEM), and the changes of lubricant viscosity with temperature were taken into account. The result showed that under high speed condition, pressure distribution and temperature field of the bear are different from those with oil lubrication and also could control the temperature of bear effectively with water lubrication.
Number of references:6
Ei main heading:Lubrication
Ei controlled terms:Computer simulation  -  Difference equations  -Differentiation (calculus)  -  Finite difference method  -  Finite element method  -  Hydrodynamics  -  Hydrostatic bearings  - Journal bearings  -  Pressure distribution  -  Reynolds equation   - Three dimensional
Uncontrolled terms:Temperature fields  -  Oil lubrication  -  Water lubrication  -  Finite element (FE)  -  Reynolds (CO)  -  High speeds  -  Lubricant viscosity  -  Numerical simulating  - Numerical simulations
Ei classification codes:601.2 Machine Components  -  607.2 Lubrication  -  631.1 Fluid Flow, General  -  631.1.1 Liquid Dynamics  -  723.5 Computer Applications  -  921.2 Calculus  -
921.6 Numerical Methods  -  931.1 Mechanics
Database:Compendex
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 28.  Accession number:082911385552
Title:Force analysis and calculation of the rotary seal using sealing ring
Authors:Peng, Zengxiong; Jiang, Chao; Liu, Dinghua; Hu, Jibin
Author affiliation:Beijing Institute of Technology, Beijing 100081, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 163-165 192
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: Based on the theory of friction and lubrication, the models of the rotary seal under the condition of fluid lubrication and boundary lubrication were established respectively. Relations between force characteristic and structural parameters of the sealing ring were analyzed. Lubrication state between the sealing ring and the surface of the shaft groove was also discussed. The expression of calculating friction torque under the condition of boundary lubrication was deduced. Experiments have been done on the rotary seal test bench designed specially. Testing results validated the calculation formula.
Number of references:6
Ei main heading:Lubrication
Ei controlled terms:Friction  -  Inorganic coatings
Uncontrolled terms:Sealing rings  -  Boundary lubrications  - Calculation formula  -  Fluid lubrication  -  Test benches  - Friction torque  -  Testing results  -  Structural parameters  -Force analysis
Ei classification codes:607.2 Lubrication  -  813.2 Coating Materials  -  931.1 Mechanics
Database:Compendex
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 29.  Accession number:082911385553
Title:Contour optimization of the micro plastic gears based on computer vision
Authors:Chen, Lianqing; Gao, Liguo; Chen, Yongqing
Author affiliation:Ningbo University of Technology, Ningbo 315016, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 166-169
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: On the basis of the studies upon the computer vision system construction and the theories and technologies of the image preprocessing, the segmentation of image as well as the pixels connectivity of digital image, the methods of wiping off the noise points in the binary image of the micro plastic gears and extracting the contour of the gears were put forward. The simplifying algorithm for the contour extracting was raised by the methodology of the mathematical morphology. The principles and the implement of the key technologies of the above algorithm were also presented. It found out that a curvilinear could be represented with the fewest points by deleting the unassociated points. At last, the experiments have showed that the inspection dates of the tooth profile could be obtained accurately by the simplifying algorithm of contour optimization and the algorithm could meet the needs of the virtual engineering inspection.
Number of references:6
Ei main heading:Boolean functions
Ei controlled terms:Artificial intelligence  -  Computer vision  - Gears  -  Image processing  -  Mathematical morphology  - Optimization  -  Plastics  -  Visual communication
Uncontrolled terms:Contour optimization  -  Plastic gears  -  Key technologies  -  Digital imaging  -  Tooth profiles  -  Image pre-processing  -  Virtual engineering  -  Computer vision systems
Ei classification codes:601.2 Machine Components  -  717.1 Optical Communication Systems  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  - 723.2 Data Processing and Image Processing  -  723.4 Artificial Intelligence  -  741 Light, Optics and Optical Devices  -  741.2 Vision  -  817.1 Polymer Products  -  921.5 Optimization Techniques
Database:Compendex
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 30.  Accession number:082911385515
Title:Review on integrated vehicle dynamics control
Authors:Yu, Fan; Li, Daofei
Author affiliation:Shanghai Jiaotong University, Shanghai 200240, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 1-7
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: By coordinating different chassis control subsystems, integrated vehicle dynamics control (IVDC) can avoid system interferences and thus improve overall vehicle dynamics performance. First, the roadmap and methodologies of IVDC were reviewed, and then the control strategies of coordination between the subsystems were summarized. To further improve vehicle active safety, the integration between steering and braking/traction will still be most concerned in future IVDC study. A typical question can be that, based on the consideration of practical actuator limits and thenon-linearity both in tire and vehicle, how to optimally assign the required stabilizing force/moment to each wheel/tire. Particularly, once X-by-wire technology and novel active control systems are widely used, more potential benefits of IVDC can be expected.
Number of references:45
Ei main heading:Control systems
Ei controlled terms:Concurrency control  -  Control system analysis -  Control theory  -  Dynamics  -  Ground vehicles  -  Military data processing  -  Vehicles
Uncontrolled terms:Vehicle dynamics control  -  Control strategies -  Road maps  -  Nonlinearity (including bifurcation theory)  - Active safety  -  Vehicle dynamics  -  X-by-wire technologies  - Active control systems  -  Potential benefits  -  Chassis control
Ei classification codes:432 Highway Transportation  -  662 Automobiles and Smaller Vehicles  -  723.2 Data Processing and Image Processing  -  723.3 Database Systems  -  731.1 Control Systems  - 931.1 Mechanics
Database:Compendex
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 31.  Accession number:082911385516
Title:Investigation on hot surface assisted ignition combustion process of electrical control injection natural gas engine
Authors:Zhang, Defu; Zhang, Huiming; Jin, Jianguo
Author affiliation:Tianjin University, Tianjin 300072, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 8-12
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Aimed at the difficulty of starting up and knocking on the homogeneous charge compression ignition natural gas engine, a hot surface assisted ignition system with stratified charge was developed and it's operating characteristics was investigated. Results from experiments showed that engine starting up is easy with natural gas low pressure supply method. It is advantageous for the mixture concentration stratification forming with decreasing passage size, increasing high pressure injection ratio and decreasing advanced angle of high pressure injection. At a result, the interval angle of ignition between main and auxiliary chamber was increased, the pressure raising ratio and the heat release ratio around the top dead center were retarded obviously, so knocking was restrained. With passage diameter between the main and auxiliary chamber at 8 mm, the maximum power is 83% of the original engine at 1200 r/min and 73% of the original engine at 1400 r/min respectively, Meanwhile NOx emission has been reduced compared to the direct injection natural gas engine.
Number of references:6
Ei main heading:Ignition
Ei controlled terms:Concentration (process)  -  Engines  -  Gas engines  -  Gas industry  -  Gas supply  -  Gases  -  Ignition systems  -  Injection (oil wells)  -  Internal combustion engines  - Natural gas   -  Starting  -  Stratified charge engines  -  Surface charge
Uncontrolled terms:High pressure injection  -  Hot surfaces  -Natural gas engines  -  Auxiliary chamber  -  Heat releases  - Electrical controls  -  Mixture concentration  -  Low pressure (LP) -  Operating characteristics  -  Top-dead center (TDC)   - Stratified charge  -  Homogeneous-charge compression-ignition (HCCI) -  Maximum power  -  Combustion processes
Ei classification codes:423 Non Mechanical Properties and Tests of Building Materials  -  511.1 Oil Field Production Operations  - 521.1 Fuel Combustion  -  522 Gas Fuels  -  612 Engines  -  612.1 Internal Combustion Engines, General  -  612.3 Gas Turbines and Engines  -  802.3 Chemical Operations  -  931.2 Physical Properties of Gases, Liquids and Solids
Database:Compendex
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 32.  Accession number:082911385517
Title:Experiment on CCCI Combustion in a Engine Fueled with DME
Authors:Zhang, Junjun; Qiao, Xinqi; Guan, Bin; Wang, Zhen; Huang, Zhen
Author affiliation:Shanghai Jiaotong University, Shanghai 200040, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 13-16 45
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Combining the advantages of HCCI combustion and in-cylinder direct injection combustion for a diesel engine fuelled with DME, a new concept combustion system, namely compound charge compression ignition (CCCI) combustion by port introduction and direct injection of DME, was proposed, a diesel engine was modified to carry out this test. The results showed that CCCI combustion process comprised HCCI combustion and pre-mixing combustion, diffusion combustion. And different combustion characteristic was presented by it with the variation of premixed fuel ratio. With the increasing of premixed fuel ratio, the peak value of mean temperature, pressure, rise rate of pressure as well as NOx emissions decreased first and increasedlater. With the increasing of fuel delivery advance angle, CO and HC emissions decreased and NOx emissions increased, the fuel consumption has been improved. Compared with HCCI combustion mode, under a certain premixed fuel ratio and fuel delivery advance angle, CCCI combustion could extend the operating range with a little change of NOx emissions and a reduction in HC and CO emissions.
Number of references:8
Ei main heading:Ignition
Ei controlled terms:Arsenic compounds  -  Charge injection  - Combustion  -  Diesel engines  -  Diesel locomotives  -  Engine cylinders  -  Fuels  -  Injection (oil wells)  -  Mixing  -  Smoke -  Synthetic fuels  -  Thermochemistry
Uncontrolled terms:Premixed fuels  -  Homogeneous charge compression ignition (HCCI) combustion  -  Direct injection (DI)  -  Mean temperatures  -  Peak values  -  Combustion processes  -  Combustion characteristics  -  Charge compression  -  Diffusion combustion  -Combustion systems   -  Rate of pressure  -  New concept
Ei classification codes:451.1 Air Pollution Sources  -  511.1 Oil Field Production Operations  -  521.1 Fuel Combustion  -  522 Gas Fuels  -  612.1.1 Internal Combustion Engine Components  -  612.2 Diesel Engines  -  641.1 Thermodynamics  -  682.1.2 Locomotives  - 701.1 Electricity: Basic Concepts and Phenomena  -  802.3 Chemical Operations  -  804.1 Organic Compounds
Database:Compendex
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 33.  Accession number:082911385554
Title:Intelligent integrated motion control for micromanipulator
Authors:Mao, Zhengyu; Hu, Xiaoping
Author affiliation:Hu'nan University of Science and Technology, Xiangtan 411201, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 170-173 200
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: AC servo system of micromanipulator's motion system has some bad characters for control, such as high nonlinear, uncertainty and strong external disturbance. Based on PID control, the parameters of self-adjusting PIDF control, the BP neural networks PID control and the fuzzy adaptive PID control have been adopted in integrating an intelligent system for motion control of
micromanipulator. It made fully use of the advantages of these intelligent algorithms and filled up the deficiency of each of them. The designing details on each PID controller and the integrated method and working principle of intelligent system were presented. To validate its performance, the system was introduced into motion controlling for Panasonic AC servo system. Experimental results showed that integrated scheme improved the system accuracy with favorable dynamic and steady performance, and could adapt to load variation and external interference with a strong robustness.
Number of references:10
Ei main heading:Military data processing
Ei controlled terms:Adaptive control systems  -  Artificial intelligence  -  Control theory  -  Fuzzy control  -  Fuzzy logic  - Fuzzy neural networks  -  Intelligent control  -  Intelligent
systems  -  Micromanipulators  -  Motion control   -  Motion planning  -  Neural networks  -  Proportional control systems  - Robust control  -  Robustness (control systems)  -  Three term control systems  -  Time varying control systems  -  Two term control systems
Uncontrolled terms:Micro manipulators  -  AC servo systems  - Digital proportional integral differential (PID) control  -  Working principles  -  Intelligent Algorithms  -  Self-adjusting  -  Fuzzy adaptive PID control  -  PID controllers  -  Load variations  - Panasonic (CO)   -  System accuracy  -  BP Neural Networks (BPNN)  - External disturbances  -  Exte rnal interference  -  Motion system (MS)
Ei classification codes:431.5 Air Navigation and Traffic Control  - 461.1 Biomedical Engineering  -  691.1 Materials Handling Equipment -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.2 Data Processing and Image Processing  -  723.4 Artificial Intelligence  -  723.4.1 Expert Systems  -  731 Automatic Control Principles and Applications -  731.1 Control Systems  -  731.3 Specific Variables Control
Database:Compendex
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 34.  Accession number:082911385555
Title:NURBS curve hybrid interpolator in high speed and high accuracy machining
Authors:Dong, Bolin; Wang, Zhisen; Han, Jiang
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 174-178
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Aiming at the demand of complex surface high speed and high accuracy of CNC machining, the NURBS curve direct interpolators were investigated. A new NURBS curve hybrid interpolation algorithm which was put forward is a combination of FIR filters, second order Taylor algorithm, and interpolator's error control algorithm. On the basis of achieving high precision, S velocity profile was adopted to smoothly, exactly produce the velocity profile. Two cascade FIR filters were utilized to realize the acceleration and deceleration according to S velocity profile. By canceling the look-ahead algorithm in NURBS curve interpolation algorithm, NURBS curve hybridinterpolation algorithm could also greatly shorten the computing time of NURBS interpolator, increase the frequency of interpolator, and advance the machining feed-rate.
Number of references:10
Ei main heading:Algorithms
Ei controlled terms:Boolean functions  -  FIR filters  - Interpolation  -  Machining  -  Numerical control systems  -  Speed-  Splines  -  Wave filters
Uncontrolled terms:Non uniform rational B splines (NURBS) curve  - S-velocity  -  High accuracy  -  High speeds  -  Interpolation algorithms  -  Velocity profiling  -  High precision  -  Feed rates -  Error control  -  Cnc machining   -  Computing time  - Look-ahead  -  Acceleration and deceleration  -  Cascade (CO)  - Second orders  -  Complex surfaces
Ei classification codes:601.2 Machine Components  -  604.2 Machining Operations  -  703.2 Electric Filters  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  921.6 Numerical Methods -  931.1 Mechanics
Database:Compendex
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 35.  Accession number:082911385556
Title:Complex surface reconstruction based on feature line
Authors:Ming, Jia; Zhu, Caichao; Ran, Xiansheng
Author affiliation:Chongqing University, Chongqing 400044, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 179-183
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: The research on how to get border line, feature line and section line from point cloud data was done and a new segmentation method based on feature line was put forward. At first, the research on feature recognition, interrelationships was conduced by applying this method. The point cloud data into corresponding segments was subdivided secondly. At last the surface based on range data was constructed and complex surface reconstruction was finished. The method was used on a motorcycle front cover panel reconstruction. It has advantage in point cloud data segmentation, feature line pick-up, complex surface reconstruction and has resolved the problem of complicated surface fitting.
Number of references:12
Ei main heading:Surface reconstruction
Ei controlled terms:Curve fitting  -  Repair  -  Restoration
Uncontrolled terms:Feature lines  -  Point cloud data  -  Complex surfaces  -  Pick-up  -  Feature recognition  -  Cover panel  - Surface fittings  -  Range data  -  Segmentation methods
Ei classification codes:402 Buildings and Towers  -  913.5 Maintenance  -  920 ENGINEERING MATHEMATICS  -  921.6 Numerical Methods
Database:Compendex
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 36.  Accession number:082911385557
Title:Numerical simulation and experiment of mechanical parameters in forming automobile semi-axes with multi-wedge cross wedge rolling
Authors:Zhao, Jing; Lu, Liqun; Hu, Zhenghuan
Author affiliation:Shandong University of Technology, Zibo 255049, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 184-188
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Using finite element method, the varying rule of mechanical parameters with technology parameters was analyzed systematically in multi-wedge cross wedge rolling forming automobile semi-axes. The testing system of mechanical parameters by using computer-collected data was developed. Through this testing system, the influence rule of rolling force and rolling moment at different technology parameters was tested on line. The result of test corresponded with the theoretical analysis. The research results provided important theory foundation for defining parameters of rolling force and rolling moment for developing multi-wedge cross wedge rolling mill of forming automobile semi-axes.
Number of references:7
Ei main heading:Rolling mills
Ei controlled terms:Automobiles  -  Computer simulation  -  Computer testing  -  Electric network analysis  -  Equipment testing  - Finite element method  -  Instruments  -  Tools
Uncontrolled terms:Cross wedge rolling (CWR)  -  Mechanical parameters  -  Technology parameters  -  Rolling moments  -  Rolling forces  -  Testing systems  -  Research results  -  Influence rule -  Finite element (FE)  -  Numerical simulations
Ei classification codes:535.1.1 Rolling Mills  -  603 Machine Tools -  662.1 Automobiles  -  703.1.1 Electric Network Analysis  -  722 Computer Systems and Equipment  -  723.5 Computer Applications  - 921.6 Numerical Methods  -  941 Acoustical and Optical Measuring
Instruments
Database:Compendex
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 37.  Accession number:082911385558
Title:Simulation on forming of car engine hood inner panel
Authors:Zhu, Maotao; Zhang, Yongjian; Zhang, Lili
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 189-192
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract: IVECO light-duty vehicle hood inner panel was taken as an object to simulate, which used CATIA software as modeling tools and the surface data in an IGES format was imported to DYNAFORM for forming simulation. On the base of summing up the latest achievement made both at home and abroad, the practical application of sheet metal forming numerical simulation was discussed and further researched. The influences to the forming quality of these factors such as blank size, drawabeads binder force and lubricative condition have been analyzed, and through the optimization of these factors, cracking and wrinkling were eliminated. This effect of optimization has been verified through the comparison between simulation and the test results.
Number of references:5
Ei main heading:Forming
Ei controlled terms:Computer simulation  -  Metal forming  -  Metals -  Optimization  -  Sheet metal
Uncontrolled terms:Light-duty (LD) vehicles  -  AS modeling  - Surface data  -  IGES format  -  Sheet-metal forming  -  Numerical simulations  -  Forming quality  -  Binder force  -  Test results  -Car engines
Ei classification codes:531 Metallurgy and Metallography  -  535.1 Metal Rolling  -  535.2 Metal Forming  -  723.5 Computer Applications  -  921.5 Optimization Techniques
Database:Compendex
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 38.  Accession number:082911385559
Title:Optimization design of process parameters in tube hydroforming
Authors:Teng, Hongchun
Author affiliation:Nanjing Institute of Industry Technology, Nanjing 210046, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 193-197
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The finite element software DYNAFORM was applied to simulate the whole tube hydroforming process. The stress distribution, strain distribution and thickness distribution at different process conditions and different times were presented. The effect of different matching of internal pressure and axial force, the different friction coefficients between tube and die were simulated and analyzed. In addition, the material characters of tube were considered too.
Number of references:5
Ei main heading:Tubes (components)
Ei controlled terms:Bending (deformation)  -  Finite element method -  Friction  -  Molecular beam epitaxy  -  Process design  - Process engineering  -  Stress concentration
Uncontrolled terms:Tube hydroforming (THF)  -  Stress distributions -  Internal pressure (IP)  -  Friction coefficient (FC)  -  Strain distributions  -  Process conditions  -  Thickness distributions  - Finite element software (MARC2000)  -  Axial forces  -  Process Parameters   -  Optimization designs
Ei classification codes:421 Strength of Building Materials; Mechanical Properties  -  619.1 Pipe, Piping and Pipelines  -  912.1 Industrial Engineering  -  913.1 Production Engineering  -  921.6 Numerical Methods  -  931.1 Mechanics  -  931.3 Atomic and Molecular Physics
Database:Compendex
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 39.  Accession number:082911385518
Title:Design on Low Noise Structure of Oil Pan Based on FEM and BEM
Authors:Fang, Hua; Wang, Tianling; Li, Shengcheng
Author affiliation:Jilin University, Changchun 130025, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 17-20
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The combination of FEM and BEM can adequately bring into play their advantages in the numerical simulation of diesel engine oil pan; its structure vibration and radiated noise were studied. The FE model and semi-anechoic room BE model were built, the improving designs were put forward by simulation statistics from increasing of damp and structure rigidity. The results showed that the high noise was reduced obviously with damp increasing; the calculation results showed that vibration would reduce and the radiation efficiency was increased by the improvement of the structure rigidity. Comparing the results of experiment and calculation, we found out that both of them have the same trend, so the simulation was verified.
Number of references:4
Ei main heading:Finite element method
Ei controlled terms:Boundary element method  -  Computer simulation -  Conductive plastics  -  Diesel engines  -  Lattice vibrations  - Materials science  -  Rigidity  -  Vibrations (mechanical)
Uncontrolled terms:Oil pan  -  Numerical simulations  -  Diesel engine oils  -  Structure vibrations  -  Radiated noise  -Arbitrary Lagrangian Eulerian Finite Element (FE) model  -  Anechoic rooms  -  Radiation efficiency (gain)  -  Low noise
Ei classification codes:612.2 Diesel Engines  -  708.2 Conducting Materials  -  723.5 Computer Applications  -  921.6 Numerical Methods  -  931.1 Mechanics  -  933.1.1 Crystal Lattice  -  951
Materials Science
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
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 40.  Accession number:082911385519
Title:Design of real-time operating system for hybrid electric vehicle based on OSEK/VDX
Authors:Song, Junhua; Wang, Junxi; Mao, Xiaojian; Zhuo, Bin
Author affiliation:Shanghai Jiaotong University, Shanghai 200240, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 21-24
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: OSEK/VDX is the common software interface in the area of automotive electronics. It is necessary to build a real time operating system in order to achieve the real time control of hybrid electric vehicle control system. Real-time operating system can improve the response rate of control system and is easy to implement design modularity. The structure of HEV system, hardware of system and embedded software design were introduced. Design of real-time operating system kernel and methods of task were divided base on the data flow and main state machine, and CAN communication program was presented. A real-time operating system has been built based on the interface OSEK/VDX.
Number of references:5
Ei main heading:Computer software
Ei controlled terms:Automobile electronic equipment  -  Automobile parts and equipment  -  Automobiles  -  Computer operating systems -  Control system synthesis  -  Control theory  -  Electric automobiles  -  Electric vehicles  -  Machine design  -  Military data processing   -  Nonlinear control systems  -  Real time control -  Real time systems  -  Secondary batteries  -  Software design  - Vehicles
Uncontrolled terms:Real-time operating-system (RTOS)  -  Hybrid Electric Vehicle (HEV)  -  Data flows  -  Real time  -  Embedded software design  -  Response rates  -  State machines  -  Automotive electronics  -  Common software
Ei classification codes:432 Highway Transportation  -  601 Mechanical Design  -  662.1 Automobiles  -  662.4 Automobile and Smaller Vehicle Components  -  702.1.2 Secondary Batteries  -  715.2 Industrial Electronic Equipment  -  722 Computer Systems and Equipment  -  722.4 Digital Computers and Systems  -  723 Computer Software, Data Handling and Applications  -  723.1 Computer
Programming  -  723.2 Data Processing and Image Processing  -  731 Automatic Control Principles and Applications  -  731.1 Control Systems
Database:Compendex
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 41.  Accession number:082911385520
Title:Design of electric power steering control system using μ synthesis
Authors:Yuan, Chaochun; Chen, Long; Jiang, Haobin
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 25-28
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Design of electric power steering control system by using μ synthesis was presented, the modeling uncertainties and the external disturbances were considered during the designing of EPS control system. Based on the requirement of electric power steering performance and system specifications, the EPS control system architecture and the weighting functions were selected. The μ controller of EPS has been worked out by using μ control toolboxes in Matlab. Simulations and the calculated μ results showed that the designed μ controller performed satisfactorily and inherited the imposed robustness and performance sections.
Number of references:7
Ei main heading:Military data processing
Ei controlled terms:Aircraft parts and equipment  -  Control system synthesis  -  Control theory  -  Earnings  -  Electric power measurement  -  Force measurement  -  Industrial economics  -MATLAB  -  Robust control  -  Robustness (control systems)   - Specifications  -  Steering
Uncontrolled terms:Electric power steering  -  System specifications -  Weighting functions  -  Control system architecture  -  External disturbances  -  Modeling uncertainties
Ei classification codes:652.3 Aircraft Instruments and Equipment  - 662.4 Automobile and Smaller Vehicle Components  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  - 731 Automatic Control Principles and Applications  -  731.1 Control Systems  -  902.2 Codes and Standards  -  911.2 Industrial Economics -  942.2 Electric Variables Measurements  -  943.2 Mechanical Variables Measurements
Database:Compendex
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 42.  Accession number:082911385521
Title:Dynamic simulation and experiment of subminiature car based on eight DOF model
Authors:Huang, Zhigang; Mao, Enrong; Liang, Xincheng; Zhu, Hui
Author affiliation:China Agricultural University, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 29-33
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Car is a complicated dynamic system. It's hard for people to establish an accurate model. The process must be predigested and simplified under the certain condition. The dynamic idiosyncrasy of car has been studied. Based on the mathematic model of eight degree of freedom, car's mass of center acceleration, relatively dynamic load, dynamic flexibility and root mean square value of acceleration with energy method have been concluded. Simulating procedure with Matlab software was also programmed, and some calculating about the car was done. Compared with the experimental results, the simulating outcome met the need of engineering, which meant the mathematic model and deducing were correct.
Number of references:6
Ei main heading:Mathematical models
Ei controlled terms:Computer simulation  -  Dynamic programming  - Human engineering  -  MATLAB
Uncontrolled terms:Dynamic systems  -  Degree of freedom (dof)  - Dynamic flexibility  -  Root mean square (r.m.s.) values  -  Energy methods  -  MA TLAB software  -  Dynamic simulations
Ei classification codes:461.4 Ergonomics and Human Factors Engineering  -  723.5 Computer Applications  -  921 Mathematics  - 921.5 Optimization Techniques
Database:Compendex
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 43.  Accession number:082911385522
Title:Analysis on extreme operation condition of vehicle adaptive cruise control system
Authors:He, Wei; Liu, Zhaodu; Si, Hai; Li, Jingliang
Author affiliation:Beijing Institute of Technology, Beijing 100081, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 34-37
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Theoretical judgment condition of ACC extreme operation condition was achieved in terms of small deceleration and big deceleration of the proceeding car on the basis of kinematical
analysis of host car and proceeding car in ACC. Considering the most dangerous operation condition in the proceeding car brakes urgently, the judgment condition of ACC extreme operation condition was confirmed in real use. And through tests, the td and acmax which were the key parameters of the condition have been obtained. The conclusion was that td equals 0.214 s and acmax equaled three different values by three typical road surfaces. Furthermore, according to the condition and typical parameters, the working area of ACC could be divided into three parts, to define the effective areas of ACC and give the driver alarm, and prevent the vehicle from entering the dangerous area after it enters the extreme area.
Number of references:4
Ei main heading:Control system analysis
Ei controlled terms:Adaptive control systems  -  Aerospace vehicles -  Computer control  -  Deceleration  -  Friction materials  - Military data processing
Uncontrolled terms:Operation conditions  -  Kinematical analysis  - Adaptive Cruise Control (ACC)
Ei classification codes:601.1 Mechanical Devices  -  652.1 Aircraft, General  -  654.1 Rockets and Missiles  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  731.1 Control Systems
Database:Compendex
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 44.  Accession number:082911385523
Title:Optimal guaranteed cost control of vehicle stability at limit conditions
Authors:Yang, Xiujian; Wang, Zengcai; Lu, Yufeng; Peng, Weili
Author affiliation:Shandong University, Ji'nan 250061, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 38-41
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Considering the uncertain characteristic of the tire cornering stiffness, a linear parametric uncertainty vehicle model was developed for designing the controller. An optimal guaranteed cost control scheme was proposed on the basis of an analysis of the existing strategies for vehicle handling and stability control. An optimal guaranteed cost controller for the vehicle stability was
developed based on model-following technique and the vehicle model with parametric uncertainties. Some simulations have been carried out, and the result demonstrated that the optimal guaranteed cost control scheme could not only keep the system stable but also obtain a much smaller slip angle and have much better yaw rate response.
Number of references:11
Ei main heading:Cost benefit analysis
Ei controlled terms:Automobile frames  -  Large scale systems  - Structures (built objects)  -  System stability  -  Vehicles
Uncontrolled terms:Guaranteed cost (GC) control  -  Vehicle modelling  -  Parametric uncertainties  -  Vehicle stability  - Slip angles  -  Vehicle handling  -  Guaranteed cost controllers  - Stability control  -  Yaw rate  -  Cornering stiffness
Ei classification codes:408 Structural Design  -  432 Highway Transportation  -  662.4 Automobile and Smaller Vehicle Components -  911 Cost and Value Engineering; Industrial Economics  -  961 Systems Science
Database:Compendex
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 45.  Accession number:082911385524
Title:Lane changing and overtaking control method for intelligent vehicle based on backstepping algorithm
Authors:You, Feng; Wang, Rongben; Zhang, Ronghui; Xiong, Wenhua
Author affiliation:South China University of Technology, Guangzhou 510640, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 6
Issue date:June 2008
Publication year:2008
Pages:p 42-45
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: To guarantee intelligent vehicle (IV) track preconcerted trajectory steadily, according to IV's simplified model of kinematics, IV model that based on rigid body model was established firstly. Then current and reference posture to develop the dynamic posture error of IV were selected. And state space mathematics model of IV has been constructed to track trajectory closed loop control system by the adopted posture error. Based on Backstepping control algorithm, Lyapunov function has been chosen and controller for IV lane changing and overtaking was designed. Simulation and experiment result showed that the controller designed by this method could track preconcerted trajectory quickly, it is steady and reliable during IV's lane changing and overtaking control course.
Number of references:10
Ei main heading:Mathematical models
Ei controlled terms:Boolean functions  -  Closed loop control systems  -  Differential equations  -  Intelligent vehicle highway systems  -  Lyapunov functions  -  State space methods  - Trajectories  -  Trees (mathematics)  -  Vehicles
Uncontrolled terms:Lane changing  -  Intelligent vehicle  -  Posture error  -  Rigid body modelling  -  Backstepping control (BSC)  - Simplified models  -  Closed loop controls  -  Mathematics model  - Lyapunov  -  State spaces   -  Backstepping algorithms  -  Control
methods
Ei classification codes:404.1 Military Engineering  -  406.1 Highway Systems  -  432 Highway Transportation  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  731.1 Control Systems  -  921 Mathematics  - 921.2 Calculus  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
Database:Compendex
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