Semi-active variable stiffness vibration control of vehicle seat suspension using an MR elastomer isolator

作者：Haiping Du, Weihua Li, Nong Zhang · 发表于：Smart Materials and Structures · 年份：2011 · DOI：10.1088/0964-1726/20/10/105003 · 被引用次数：193 · 研究领域：Vibration Control and Rheological Fluids、Structural Engineering and Vibration Analysis、Effects of Vibration on Health

This paper presents a study on continuously variable stiffness control of vehicle seat suspension using a magnetorheological elastomer (MRE) isolator. A concept design for an MRE isolator is proposed in the paper and its behavior is experimentally evaluated. An integrated seat suspension model, which includes a quarter-car suspension and a seat suspension with a driver body model, is used to design a sub-optimal controller for an active isolator. The desired control force generated by this active isolator is then emulated by the MRE isolator through its continuously variable stiffness property when the actuating condition is met. The vibration control effect of the MRE isolator is evaluated in terms of driver body acceleration responses under both bump and random road conditions. The results show that the proposed control strategy achieves better vibration reduction performance than conventional on–off control.