Regular Papers

International Journal of Control, Automation and Systems 2021; 19(3): 1241-1251

Published online March 3, 2021

https://doi.org/10.1007/s12555-019-0946-z

© The International Journal of Control, Automation, and Systems

Adaptive Asymptotic Tracking Fault-tolerant Control of Uncertain Nonlinear Systems with Actuator Failures and Event-triggered Inputs

Yan Yan, Libing Wu*, Nannan Zhao, and Ruiyan Zhang

University of Science and Technology Liaoning

Abstract

This paper is concerned with the problem of adaptive asymptotic tracking fault-tolerant control (FTC) for uncertain nonlinear systems with actuator faults and event-triggered inputs. Firstly, fault-tolerant controller is designed to effectively compensate the unknown actuator failures by constructing the proper parameter updated laws. Then, the event-triggered strategy based on the relative threshold method is applied to the proposed adaptive fault-tolerant controller. Furthermore, it is proved that all the closed-loop signals are uniformly bounded and the tracking error can asymptotically converge to zero. Finally, the simulation results are given to demonstrate the effectiveness of the presented control scheme.

Keywords Adaptive control, asymptotic tracking, event-triggered control, fault-tolerant control, nonlinear systems.

Article

Regular Papers

International Journal of Control, Automation and Systems 2021; 19(3): 1241-1251

Published online March 1, 2021 https://doi.org/10.1007/s12555-019-0946-z

Copyright © The International Journal of Control, Automation, and Systems.

Adaptive Asymptotic Tracking Fault-tolerant Control of Uncertain Nonlinear Systems with Actuator Failures and Event-triggered Inputs

Yan Yan, Libing Wu*, Nannan Zhao, and Ruiyan Zhang

University of Science and Technology Liaoning

Abstract

This paper is concerned with the problem of adaptive asymptotic tracking fault-tolerant control (FTC) for uncertain nonlinear systems with actuator faults and event-triggered inputs. Firstly, fault-tolerant controller is designed to effectively compensate the unknown actuator failures by constructing the proper parameter updated laws. Then, the event-triggered strategy based on the relative threshold method is applied to the proposed adaptive fault-tolerant controller. Furthermore, it is proved that all the closed-loop signals are uniformly bounded and the tracking error can asymptotically converge to zero. Finally, the simulation results are given to demonstrate the effectiveness of the presented control scheme.

Keywords: Adaptive control, asymptotic tracking, event-triggered control, fault-tolerant control, nonlinear systems.

IJCAS
May 2024

Vol. 22, No. 5, pp. 1461~1759

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