Abstract
This paper studies the problem of adaptive fault-tolerant Hinfin controller design for linear time-invariant systems. New indirect adaptive fault-tolerant controller design methods via state feedback are presented for actuator fault compensations. Based on the on-line estimation of eventual faults, the adaptive fault-tolerant controller parameters are updated automatically to compensate the fault effect on system. A notion of adaptive Hinfin performance index is proposed to describe the disturbance attenuation performances of closed-loop systems. The designs are developed in the framework of linear matrix inequality (LMI) approach, which can guaranteed the asymptotic stability and adaptive Hinfin performances of closed-loop systems even in the case of actuator faults. The effectiveness of the proposed design is illustrated via a decoupled longitudinal model of an F-18 aircraft
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