Multi-objective Optimal Control of Semi-Active Suspension System with MR Dampers

摘要：

A multi-objective optimal control strategy based on the linear matrix inequality(LMI)is designed and used to control vehicle semi-active suspension system with magneto-rheological(MR)dampers.A vertical vehicle dynamic model with seven degrees of freedom is developed and used to demonstrate the effectiveness of the multi-objective optimal controller.Four prototype MR dampers are designed,manufactured and characterized.The multi-objective optimal control law is derived to balance vehicle ride and handling performance.The ride performance is characterized by H2 system norm,and the handling performance is characterized by H∞ system norm,and the control method optimizes the mixed H2/H∞ performance.The results show that the proposed multi-objective optimal controller can effectively suppress the vibration of vehicle and improve both the ride comfort and handling stability.The obtained results demonstrate the potential of the multi-objective optimal controller as an effective means for attenuating the vibration of vehicle suspension system.

关键词： mixed H2/H∞ control semi-active suspension MR damper

作者: M.G. LUO L. ZHENG Y.N. LI A. Baz

作者单位: State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing,China Department of Mechanical Engineering,University of Maryland,College Park,MD,USA

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）