In this work, we extend and study the implementation of H1 output feedback controller to a vehicle suspension system with magnetorheological fluid (MRF) damper. In the closed-loop suspension system, the H1 controller serves as a system controller to provide the necessary robustness, however, in most of the cases, the controller gain is high. This makes the damper controller, which issues input currents to control the MR damper, hard to track the desired damping force. To this end, an augmented filter is proposed to remedy this issue. Although in the augmented filter, full system states are required in one of the term, while through numerical experiments, we found that this term can be ignored without sacrificing noticeable performance.
中國機械工程學刊=Journal of the Chinese Society of Mechanical Engineers 29(3)，頁249-255