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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...
The problem of actuator fault estimation and fault-tolerant control for a class of uncertain nonlinear systems using Takagi–Sugeno fuzzy models is investigated. A design procedure for nonfragile proportional-integral (PI) observer is proposed to estimate the states of the nonlinear system and reconstruct the abrupt (modeled as step-like faults) and incipient fault signals. Subsequently, a nonfragile...
In this paper a new fault tolerant control strategy for commensurate Fractional Order time invariant systems is proposed, where only measured system outputs are supposed to be available. The output-feedback Fault Tolerant Control/Control Allocation procedure introduced by Edwards et al. [18] is extended to commensurate Fractional-Order uncertain systems. Both the parametric uncertainty of the system...
This paper presents a new sensor fault tolerant control (FTC) scheme inspired by a recently developed LPV based sliding mode observer. The robustly reconstructed sensor faults from the observer are used to ‘correct’ the corrupted measurements before they are used by the existing controller. The modular structure of the sensor FTC scheme allows it to be retrofitted to the existing closed loop system...
The problem of integrated fault diagnostic and fault-tolerant control for uncertainty linear system is developed. Focusing on the actuator and sensor faults of satellite, we presents a fault diagnosis method based on sliding mode observer. And considering the uncertainties of diagnosis results, we also design a Hinfin state-feedback controller to achieve the fault-tolerance by solving a linear matrix...
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