Fault‐tolerant control via sliding‐mode output feedback for uncertain linear systems with quantisation

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

“…It should be pointed that the aforementioned three assumptions are reasonable and nonconservative. Assumption 1 is quite natural and common in the robust fault-tolerant control literature [15]. Assumptions 2 and 3 are commonly used for adaptive tracking control of nonswitched nonlinear systems [16,17,21].…”

“…Although some effective fault tolerant tracking controllers have been designed in [13][14][15][16][17][18], however, the adaptive FTC approaches in [13][14][15][16][17][18] all focus on the nonswitched linear or nonlinear systems without output constraints. They cannot be applied to control the switched nonlinear systems considered in this paper.…”

“…They cannot be applied to control the switched nonlinear systems considered in this paper. In particular, the main limitation of the sliding mode based method proposed in [13][14][15] is that it cannot fully cope with the mismatched uncertainties. In contrast, in our approach the mismatched uncertainties can be compensated completely.…”

“…It is thus essential and significant to develop a fault tolerant control (FTC) scheme to ensure the effectiveness of system operation when faults occur. Recently, a number of design techniques have been reported in the literature [11][12][13][14][15][16][17][18]. To list a few, in [11,12], adaptive fault-tolerant controller design approaches are developed by estimating the efficiency factor online, where the type of faults under consideration is loss of actuator effectiveness.…”

“…In [14], a fault estimation and FTC approach is developed for a class of fuzzy stochastic systems with simultaneous sensor and actuator faults. For general actuator fault model simultaneously including outage, loss of effectiveness and stuck, the authors in [15] propose a fault-tolerant control method for uncertain linear systems with quantization via sliding-mode output feedback. For a class of single-input single-output (SISO) nonlinear systems in parametric-strict-feedback form, some important results have been obtained based on the backstepping design technique [16,17].…”