Observer-based output feedback control of cyber-physical systems under cyber attacks

Abstract

Abstract: An observer-based output feedback control strategy is investigated for security control problem of cyber-physical systems (CPS) subject to false data injection (FDI) attacks and packet dropouts. Firstly, the closed-loop Markov jump system model with FDI attacks, packet dropouts and external disturbance is established by considering the effects of FDI attacks and the case of packet dropouts. Then, the sufficient conditions for the closed-loop system to be stochastic stability are conducted by utilizing the Lyapunov theory, the stochastic analysis technology and linear matrix inequality approach, and the observer-based output feedback controller is derived with the prescribedH_∞ performance. Finally, an illustrative example is given to demonstrate the effectiveness of the proposed method.

Key words: cyber-physical systems, Markov jump system, false data injection attack, packet dropout, output feedback control

CLC Number:

TP273

ZHU Chao-qun, JIA Xuan. Observer-based output feedback control of cyber-physical systems under cyber attacks[J]. Journal of Lanzhou University of Technology, 2023, 49(4): 74-81.

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