Research on Robust H8 Fault-Tolerant Control for Uncertain Suspension System with Time Delay

The problem of robust H_∞ fault-tolerant control for uncertain suspension system with time delay was investigated. Based on state feedback and Lyapunov stability theory, a sufficient condition of the existence of robust H_∞ fault-tolerant controller was derived and then transformed to the corresponding linear matrix inequality. During inferential reasoning, the less conservative arithmetic dealing with inequality amplification was employed so that it was possible to sufficiently reduce conservative of controller design. The resultant controller enabled uncertain system with time delay to retain robust stability and disturbance attenuation as well as to tolerate actuator failure.