Robust Nonlinear Control for Automotive Active Suspension Systems

To ensure a comfort ride and safe transportation for people and cargos, active suspension systems are used. An active suspension system is mainly operated according to the road conditions via controlling a hydraulic or pneumatic actuator to guarantee zero vertical acceleration and velocity at the passenger or cargo cabinet. In order to explore new control methods for comfort transportation, a robust nonlinear control scheme is proposed. In this paper, the proposed controller is designed to overcome the road disturbances and ensure a comfort ride with vehicle stability while driving. A robust feature is utilized in the proposed controller design to improve the driving performance under the unknown and uncertain parameters of the active suspension system. Preliminary simulation results are introduced to verify the proposed controller and to demonstrate the effectiveness of the design.