Active fault-tolerant predictive control of networked systems subject to actuator faults and random communication constraints

• Published in: International journal of control Vol. 95; no. 9; pp. 2357 - 2363
• Main Authors: Pang, Zhong-Hua, Xia, Cheng-Gang, Sun, Jian, Liu, Guo-Ping, Han, Qing-Long
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 02.09.2022; Taylor & Francis Ltd
• Subjects: Active control; active fault-tolerant control; actuator fault; Actuators; communication constraints; D C motors; Electric motors; Fault tolerance; Feedback control; Networked control systems (NCSs); networked predictive control; Predictive control
• ISSN: 0020-7179; 1366-5820
• DOI: 10.1080/00207179.2021.1910863

The fault-tolerant control problem is investigated for a linear networked system subject to an additive actuator fault as well as random network delays and packet dropouts in the backward and forward channels. To deal with the adverse effects of the actuator fault as well as those communication constraints, an active compensation scheme combining active fault-tolerant control and predictive control is proposed based on the simultaneous estimation of the system state and actuator fault. The obtained closed-loop system is a randomly switched system with bounded round-trip time delays, and the corresponding closed-loop stability condition is derived by using a switched Lyapunov approach. Simulation results for a networked DC motor system are provided to verify the proposed method.