Journal
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
Volume 62, Issue 5, Pages 2434-2449Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAC.2016.2612818
Keywords
Cyber-security of control systems; networked control systems; communication networks; network security; packet loss; event-triggered control; stochastic systems
Funding
- JST-CREST Program
- JSPS [15H04020]
- Grants-in-Aid for Scientific Research [15H04020] Funding Source: KAKEN
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We study cyber security issues in networked control of a linear dynamical system. Specifically, the dynamical system and the controller are assumed to be connected through a communication channel that face malicious attacks as well as random packet losses due to unreliability of transmissions. We provide a probabilistic characterization for the link failures which allows us to study combined effects of malicious and random packet losses. We first investigate almost sure stabilization under an event-triggered control law, where we utilize Lyapunov-like functions to characterize the triggering times at which the plant and the controller attempt to exchange state and control data over the network. We then provide a look at the networked control problem from the attacker's perspective and explore malicious attacks that cause instability. Finally, we demonstrate the efficacy of our results with numerical examples.
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