Adaptive Switching Control of Active Suspension Systems: A Switched System Point of View
Qiang Zeng, Jun Zhao
Abstract
In this brief, we address an adaptive multiobjective switching control problem for vehicle active suspension systems (ASSs) from a switched system point of view. An ASS is modeled as a multiple mode switched system for the first time. Each mode represents a body height mode. This switched system enables us to improve ride comfort, fuel economy, handling stability, and driving safety by adjusting the height. In addition, an adaptive control method is presented to online compensate the unknown sprung mass. In this work, a switching mechanism is developed to guarantee stability of the closed-loop ASSs by using multiple Lyapunov functions (MLFs) under the dwell time framework. Finally, the effectiveness and benefits of the proposed switching control scheme are illustrated by simulation results.