Robust fault-tolerant control for networked control systems subject to random delays via static-output feedback

• Published in: ISA transactions Vol. 86; pp. 153 - 162
• Main Authors: Bahreini, Mohsen, Zarei, Jafar
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01.03.2019
• Subjects: Fault-tolerant control; Linear matrix inequalities (LMIs); Markovian jump systems (MJSs); Network-induced random delays; Networked control systems (NCSs); Output feedback; Networked control systems (NCSs); Linear matrix inequalities (LMIs); Fault-tolerant control; Markovian jump systems (MJSs); Output feedback; Network-induced random delays
• ISSN: 0019-0578; 1879-2022; 1879-2022
• DOI: 10.1016/j.isatra.2018.10.034

This paper focuses on the problem of fault-tolerant controller (FTC) design for uncertain networked control systems (NCSs) with random delays and actuator faults. A new fault model is proposed to represent more class of actuator faults. More precisely, the NCSs with random delays and the possible actuator faults are modeled as a Markovian jump system (MJS) with incomplete transition probabilities (TPs) and then LMI-based sufficient conditions are derived to ensure the stochastic stability of the closed-loop system. The sufficient conditions are constructed to synthesize the mode-dependent static-output feedback (SOF) control laws. Feasibility and reliability of the proposed FTC against actuator faults are indicated through simulation results. •Network-induced random delays are modeled as a Markov chain with partly unknown TPs.•A more general model for actuator faults representation is proposed.•A robust FTC based on output feedback is designed for the uncertain faulty NCSs.•Improved control performance is achieved under actuator faults.•LMI-based sufficient conditions are developed to compute the controller parameters.