Design of Vibration Attitude Controller and Road Test for Full Car with Magnetorheological Suspensions
Reduction vibration of vehicle body and wheels are very important to enhance the ride performance. Based on a full vehicle vibration model, an attitude controller is proposed for vibration of full car with magnetorheological (MR) suspensions. First, nine motion attitudes of full car on the road are identified, which includes eight vibration states of vehicle body and one heave vibration of wheel. Second, various control strategy is given according to corresponding automotive vibration attitude. Third, to coordinate the vibration attitude of vehicle body and wheels, fuzzy reasoning method is developed to adjust weighting parameter according to vehicle performance requirements. To verify the attitude control, a MR suspension control and test system is set up and is implemented on a car equipped with four controllable MR dampers. Algorithm of attitude control and independent hybrid control based on quarter-car are used on MR suspension system, respectively. The data for the speed bumps indicate that the attitude control has better result on restrain pitch and roll motion compared to hybrid control and passive system, and controllable MR suspension system has a small effect on decreasing automotive vertical vibration. The results on random road show that compared to passive suspension or MR suspension with hybrid control strategy, the attitude controller can effectively reduce automotive vertical vibration, roll motion and pitch motion, achieving better ride comfort and road-holding capacity of full car.
Car Magnetorheological suspension Attitude control Fuzzy control Road test
Rui Li Weimin Chen Xiaomin Dong Changrong Liao Yi Zhang Xueqin Li
Key Laboratory of Optoelectronic Technology and Systems of the Education Ministr Chongqing Universit Key Laboratory of Network control & Intelligent Instrument of Ministry of Education Chongqing Univer
国际会议
2008 Sino-European Workshop on Intelligent Robots and Systems(SEIROS08)(第一届中欧智能系统及机器人国际学术研讨会)
重庆
英文
1-8
2008-12-11（万方平台首次上网日期，不代表论文的发表时间）