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

ABSTRACT

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.

KEYWORDS:

• Networked control systems (NCSs)
• active fault-tolerant control
• networked predictive control
• actuator fault
• communication constraints

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported in part by the National Natural Science Foundation of China under Grants 61673023, 61925303, and 61773144, by the Youth Talent Support Program of Beijing Municipality, by the NCUT Yujie Talent Training Program, by the BMEC Basic Scientific Research Foundation, and by the National Key R&D Program of China under Grant 2018YFB1700100.