Adaptive fuzzy fault tolerant tracking control for a class of uncertain switched nonlinear systems with output constraints

Adaptive Fuzzy Approximation Control of PV Grid-Connected Inverters

“…‖ stands for the Euclidean norm. From the positive definiteness of Equation(43) and the negative definiteness of Equation(46), we conclude that the tracking error is globally ultimately bounded with bound…”

“…Furthermore, to overcome the disadvantages of conventional controllers for uncertain nonlinear systems, adaptive fuzzy control (AFC) techniques were proposed to control uncertain nonlinear systems [37,38]. Due to its advantage in handling complex uncertain nonlinear systems, researchers have used the AFC techniques in different applications [39][40][41][42][43]. The AFC technique was applied for induction motor control in [39], the optimal power conversion control for standalone wind energy conversion systems in [40], permanent magnet synchronous motor control, and fuzzy fault-tolerant switched systems in [41,42].…”

Observer‐based fault reconstructions and fault‐tolerant control designs for uncertain switched systems with both actuator and sensor faults

“…Since switched systems are typical hybrid systems consisting of a series of subsystems and they can describe a large number of practical systems, FDI and FTC designs for switched systems have drawn much attention and many significant results can be found in literature [12, 25–39]. For fault reconstruction and detection purpose [25], two types of observers, a linear descriptor reduced‐order observer and a descriptor sliding mode observer, are developed for state estimation and fault reconstruction for linear switched systems with simultaneous disturbances, sensor and actuator faults.…”

Dissipativity‐based fault estimation for switched non‐linear systems with process and sensor faults

“…In [26], an unknown input observer, which could decouple the disturbance in the systems, has been designed to detect the fault in switched fuzzy systems. In [27, 28], the problem of fault‐tolerant control has been reported.…”