Abstract
This paper focuses on the problem of robust and relaible H ∞ control design for linear uncertain systems with time-varying norm-bounded parameter uncertainty in the state matrix and also with actuator failures among a prespecified subset of actuators. Actuator failures are considered as disturbance signals of arbitrary values to the system. A state feedback control design is presented that stabilizes the plant and guarantees an H ∞-norm bound constraint on attenuation of augmented disturbances, including failure signals, for all admissible uncertainties as well as actuator failures. Hence we extend the existing results on robust H ∞ control of linear uncertain systems to robust and reliable H ∞ controller design. Necessary conditions for the existence of contoller are also derived.
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