This article concentrates upon an adaptive practical preassigned finite‐time fault‐tolerant control problem for a class of time‐delay nonlinear systems in nonstrict‐feedback form with full state constraints (FSCs) and actuator fault. The compl...
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https://www.riss.kr/link?id=O111692734
2021년
-
1049-8923
1099-1239
SCIE;SCOPUS
학술저널
1497-1513 [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
This article concentrates upon an adaptive practical preassigned finite‐time fault‐tolerant control problem for a class of time‐delay nonlinear systems in nonstrict‐feedback form with full state constraints (FSCs) and actuator fault. The compl...
This article concentrates upon an adaptive practical preassigned finite‐time fault‐tolerant control problem for a class of time‐delay nonlinear systems in nonstrict‐feedback form with full state constraints (FSCs) and actuator fault. The completely unknown nonlinear functions exist in the system are identified by the neural networks (NNs). It is challenged to investigate finite‐time fault‐tolerant control problem for nonlinear systems while encountering the time‐delays, actuator faults and FSCs simultaneously, which increases the difficulty of design. The Lyapunov–Krasovskii functionals and the hyperbolic tangent functions are utilized to eliminate the effect of time‐varying delays. The actuator fault considered in this article contains the loss of effectiveness and the bias fault, simultaneously. By combining a modified barrier Lyapunov function with finite‐time performance function, the finite‐time fault‐tolerant controller is designed. It is demonstrated that the proposed adaptive controller guarantees that the system states converge to a preassigned zone at a finite‐time and all the signals of the closed‐loop system remain semiglobally practical finite‐time stable. Numerical examples are offered to illustrate the feasibility of the theoretical result.
Finite‐time extended state observer‐based exact tracking control of an unmanned surface vehicle