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Study on Hardware-in-the-loop Simulation Test-bed of CVT

Author: PiQiuSheng
Tutor: ZhouYunShan
School: Hunan University
Course: Mechanical and Electronic Engineering
Keywords: CVT Hardware-in- the -loop simulation Test platform Performance Evaluation
CLC: U463.212
Type: Master's thesis
Year: 2008
Downloads: 212
Quote: 5
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Abstract


With economic development, people's living standards improve, the car has become an important part of human society. The development of the automobile industry, spurred car the performance is also put forward higher requirements. Metal belt type continuously variable transmission (CVT) continuous change of the excellent performance of the speed ratio greatly improve the car's handling and comfort, but also improve the car's fuel economy. As the ideal vehicle variable speed transmission, has broad prospects for development and market space. Reasonable control algorithm in order to improve the transmission performance of the CVT, people have tried a number of efforts. CVT transmission performance improvement can not be separated from the experimental support, the study of the experimental method gradually get people's attention. CVT transmission performance tests, the simplest and most effective way is the CVT installed directly into the car on the experiment. But this experimental method takes a long time, the high economic cost, and can not complete the test of some extreme cases. CVT hardware in the loop simulation test platform can be a good solution to these problems. This paper first analyzes the basic structure and working principle of the CVT, to find ways to detect its transmission performance through the analysis of the CVT transmission process. Introduced on the basis of the theory of the hardware in the loop simulation, hardware in the loop simulation principle of in-depth research and analysis, that the use of the hardware in the loop simulation theory to build the feasibility and advantages of the CVT transmission performance testing platform. Second, the combination of a CVT transmission principle and hardware in the loop simulation theory, by analyzing the performance of the basic compare different components of CVT hardware in the loop simulation test platform hardware selection. CVT test platform hardware constitutes the basis to determine the basic analysis of the control algorithm of the control system of the test platform, and improve the basic PID control algorithm. Detailed study of the creation of the control module and establish MATLAB / Simulink model based on the design of the programming process, to provide theoretical guidance for the control of the preparation of the program code. Finally, build good test platform hardware control tests and analysis. On this basis, through a comparative analysis of the real vehicle test and test-bed experiments to detect the test platform to test the correctness of the CVT transmission performance. Simulation analysis and performance evaluation, a CVT finished the test platform debugging results meet experimental requirements. The sources subject of the paper is the Hunan Science and Technology Key Project (05GK2007), large capacity vehicle transmission, Hunan Jianglu limited liability company to undertake \

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Transmission > Mechanical transmission > Transmission
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