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Adaptive finite‐time fault‐tolerant control for interconnected nonlinear systems
Author(s) -
Fan Yanli,
Li Yongming,
Tong Shaocheng
Publication year - 2020
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.5366
Subject(s) - backstepping , control theory (sociology) , nonlinear system , controller (irrigation) , computer science , fault tolerance , actuator , integrator , lyapunov function , exponential function , fault (geology) , adaptive control , mathematics , control (management) , artificial intelligence , mathematical analysis , seismology , computer network , distributed computing , physics , bandwidth (computing) , quantum mechanics , agronomy , biology , geology
This paper addresses the adaptive finite‐time output tracking control problem for nonlinear large‐scale systems whose power‐exponentials are positive odd rational numbers. The considered systems contain actuator loss‐of‐effectiveness and bias fault, which can be addressed by fault‐tolerant control technique. The intelligent approximator is presented to approximate the unknown nonlinear function. Meanwhile, the technique named adding a power integrator is used, which validly overcomes the problem of the system with power‐exponentials. A finite‐time fault‐tolerant controller is proposed based on the finite‐time Lyapunov stability theory and backstepping algorithm. Moreover, the tracking errors can converge to a small neighborhood of the origin in finite time. Finally, a simulation example is given to illustrate the effectiveness of the proposed adaptive finite‐time control strategies.