Fixed‐time fault‐tolerant control for power system with multiple actuator constraints

Author:

Bai Wen1ORCID,Xiaoping Liu Peter2,Wang Huanqing1ORCID

Affiliation:

1. College of Mathematical Sciences Bohai University Jinzhou China

2. Department of Systems and Computer Engineering Carleton University Ottawa Ontario Canada

Abstract

AbstractThis paper copes with the fixed‐time fault‐tolerant control problem for a single‐machine infinite power system with static VAR compensators. In order to handle the controller design problem caused by the actuator failures and unknown dead zone input, a fuzzy fault‐tolerant control algorithm is derived by introducing the adaptive backstepping method. An adaptive fixed‐time control strategy is designed to guarantee that the output signal can track the desired trajectory within a fixed time, where the convergence time is independent of the initial condition. Compared with existing results, the proposed controller guarantees the controlled system maintains semiglobal fixed‐time stability and the tracking error converges to a small neighborhood around zero. Both actuator faults and dead zones have been considered, which can better meet the practical control requirements. A simulation example demonstrates the designed controller.

Publisher

Wiley

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