Robust controller design for active hydraulic suspension

The problem of controlling the suspension deflection of a quarter-car active suspension system using a robust tracking controller is proposed. The proposed robust asymptotic tracking and disturbance attenuation controller aims to keep the suspension deflection asymptotically to zero despite road disturbances and physical system uncertainties. The robust controller design technique is based on the respective results of Hurwitz invariability. The robust controller parameters are computed using an analytic algorithm. The effectiveness of the proposed controller is illustrated to an uncertain and disturbed environment.