Study of Evaluation and Improvement for the Performance of Vehicle Handling

• Main Authors: I-An Lai, 賴奕安
• Other Authors: Young-Chang Chen
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/39394909402818865648

碩士 === 國立屏東科技大學 === 車輛工程系所 === 101 === This thesis aims to investigate the vehicle motion in the vehicle handling performance test for a production car. An evaluation of the vehicle handling performance is performed by using the vehicle motion parameters. Based on the sensitivity analysis and optimization, a method for improving the performance of the vehicle handling is developed and verified. Firstly, a full vehicle model is constructed by ADAMS/Car software. Then, the double lane change, steady static circular and step steering tests are simulated. The influences of the vehicle operating and suspension design parameters on the vehicle motion are investigated. The vehicle motion parameters include the lateral acceleration, yaw rate, roll angle, steering wheel angle, tire later force and tire normal force. In addition, the vehicle operating parameters include the position of center-of-gravity, camber and toe. The considered suspension design parameters include the locations of the hard points, wheel alignment angles and the characteristics of the flexible components. Secondly, several objective evaluation indexes are calculated in the MATLAB software. Finally, the ADAMS/Insight module is employed to perform the sensitivity analysis and optimizing the vehicle handling performance. The results reveal that the individual test can not evaluate the performance of vehicle handling effectively. Thus, the comprehensive vehicle handling performance tests should be performed and the integral evaluation is needed. Keywords: Vehicle handling performance, Suspension system, Sensitivity analysis, Optimization