Event‐triggered adaptive fixed‐time output feedback fault tolerant control for perturbed planar nonlinear systems. (2nd July 2021)

• Record Type: Journal Article
• Authors: Zhu, Chenglong; Zhang, Kanjian; Xin, Xin; Gao, Fangzheng; Wei, Haikun
• Is Part Of: International journal of robust and nonlinear control. Volume 31:Number 14(2021)
• Page Start: 6934
• Page End: 6952
• Publication Date: 2021-07-02
• Subjects: event‐triggered adaptive control -- fault tolerant control -- fixed‐time stabilization -- output feedback -- planar nonlinear systems; Automatic control -- Periodicals; Control theory -- Periodicals; Nonlinear systems -- Periodicals; 629.836
• DOI: 10.1002/rnc.5655
• Languages: English
• ISSNs: 1049-8923

Abstract

Abstract: This paper considers an event‐triggered adaptive fixed‐time output feedback fault tolerant control problem for a class of uncertain planar nonlinear systems, in which the actuator has an unknown drift fault and the loss of effectiveness fault. Firstly, by using the adaptive backstepping technique and event‐triggered theory, a constructive event‐triggered adaptive fixed‐time state feedback controller is presented under a generalized Lipschitz continuous condition. Secondly, for the unmeasured state, a continuous fixed‐time observer is constructed. It is shown that the global practically fixed‐time stability of the closed‐loop systems is ensured by the bilimit homogeneity technique and Lyapunov theory analysis. Moreover, the system is demonstrated by contradiction to be nonzeno. Finally, the fan speed control system is constructed to demonstrate the validity of the proposed strategy and the application of the general systems.