The Improvement of the Automobile Riding Comfort and Handling Performance

• Main Authors: Hung, Shao-en, 洪紹恩
• Other Authors: Chen, Yung-Chang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/94410430544689706579

碩士 === 國立屏東科技大學 === 車輛工程系所 === 102 === This thesis aims to investigate the motion in the riding comfort and handling performance tests for a production car. The evaluation of the riding comfort and handling performance are performed by using the vehicle motion parameters. Based on the sensitivity analysis and optimization, a method for improving the performance of riding comfort and handling is developed and verified. Firstly, a full vehicle model is constructed by ADAMS/Car software. Then, the dynamic simulations of the double lane change and R10 bumps lane tests are conducted. The influences of the vehicle operating and suspension design parameters on the vehicle motion are investigated. The considered suspension design parameters include the locations of the hard points and the characteristics of the flexible components. In addition, the vehicle motion parameters include the longitudinal acceleration, vertical acceleration, lateral acceleration, yaw rate, roll angle, steering wheel angle, tire later force and tire normal force, etc. Secondly, several objective evaluation indexes are calculated in the MATLAB software. Finally, the ADAMS/Insight module is employed to perform the sensitivity analysis, and optimize the riding comfort and handling performance to meet the requirements of the design. The results reveal that the adjustment of wheelbase and tie rod position can effectively improve the handling performance. In addition, the modified track width and characteristics of the flexible components can be used to improve the riding comfort. Through the comprehensive analysis in this study, the increase of the handling performance and riding comfort are 4.15% and 22.64% respectively.