Nonfragile fault-tolerant observer-based controller design for descriptor systems

摘要

The problems of fault-tolerant control and fault estimation for descriptor systems with actuator faults are addressed. A nonfragile observer is proposed to estimate the states of the descriptor system and reconstruct actuator faults. Subsequently, based on the estimation information provided by the observer, the nonfragile fault-tolerant controller is built to guarantee the admissibility of the closed-loop systems and compensate the effect of the faults. The existence conditions of the observer and the fault-tolerant controller are given in terms of linear matrix inequalities(LMIs). An example is provided to show the effectiveness of the proposed approach.