Abstract
With a focus on the aero-engine distributed control system (DCS) with parameter perturbation, Markov time delay, data packet dropout and external disturbance, a research has been carried out on DCS fault-tolerant control on condition of partial failure of actuator. First, a quantitative description of the system parameters is given, and the augmented model of the entire closed-loop system is established. Then the stability of the closed-loop system constrained by \(H_\infty \) and cost performance index is analyzed, and the method of designing optimal guaranteed cost fault-tolerant controller is proposed based on dynamic output feedback. Finally, the consistency theory of bi-index constraints is introduced, based on which the fault-tolerant controller is designed. The simulation results show that the designed controller can effectively reduce the controlling cost of the system while guaranteeing its \(H_\infty \) performance.
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