Multi-modes control for semi-active suspension systems

Abstract The aim of this work is to design and analyze multi-modes semi-active suspension using a Continuously Variable Damper (CVD). A modeling approach for the CVD is presented, and three suspension modes are developed. The studied damper can achieve different suspension modes by controlling the actuation force, which makes its damping adjustment more efficient. By applying an appropriate control strategy to the damper based on minimizing the quadratic gap between the control actuation force for each mode and a control target, satisfaction of both ride comfort and driving safety can be realized. The control target is synthesized using CRONE-SkyHook approach. Performances of the proposed method are validated through a speed bump profile and a real measured road profile.