Optimal control for linear cyber physical systems under replay attacks via time delay estimation approach

Peng Yu, Xueyi Zhang, Ruizhe Jia, Qian Dong and Jin Guo

International Journal of Systems Science, 2025, vol. 56, issue 1, 183-192

Abstract: We mainly study the optimal control problem for linear cyber physical systems under replay attacks in this paper. The methodological research mainly relies on the following two starting points: (1) Promptly detect and estimate the malicious replay attack behaviours hampering normal system procedures; (2) Design a resilient optimal control strategy to ensure the system regularly works as much as possible. Specifically, the linear cyber physical system becomes a time delay system after the replay attack, and then an algorithm is designed to transform the system into a delay-free system and ensure its stability. Finally, a numerical simulation is employed to demonstrate the practicality and efficacy of the proposed approach.

Date: 2025
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DOI: 10.1080/00207721.2024.2389475

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