A Graph-Theoretic Security Index Based on Undetectability for Cyber-Physical Systems.
2022 American Control Conference (ACC)(2022)
摘要
In this paper, we investigate the conditions for the existence of dynamically undetectable attacks and perfectly undetectable attacks. Then we provide a quantitative measure on the security for discrete-time linear time-invariant (LTI) systems under both actuator and sensor attacks based on undetectability. Finally, the computation of proposed security index is reduced to a min-cut problem for the structured systems by graph theory. Numerical examples are provided to illustrate the theoretical results.
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关键词
CPS security,undetectability,graph theory
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