Distributed Fault-Tolerant Consensus Tracking of Multi-Agent Systems Under Cyber-Attacks

This paper investigates the distributed fault-tolerant consensus tracking problem of nonlinear multi-agent systems with general incipient and abrupt time-varying actuator faults under cyber-attacks. First, a decentralized unknown input observer is established to estimate relative states and actuator...

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Bibliographic Details
Published in:	IEEE/CAA journal of automatica sinica 2022-06, Vol.9 (6), p.1037-1048
Main Authors:	Liu, Chun, Jiang, Bin, Wang, Xiaofan, Yang, Huiliao, Xie, Shaorong
Format:	Article
Language:	eng
Subjects:	Actuators Algorithms Computer security Cyberattacks Estimation Fault tolerance Fault tolerant systems fault-tolerant consensus tracking incipient and abrupt actuator faults Multi-agent systems Multiagent systems nonlinear multi-agent systems Nonlinear systems Switches Topology Tracking control Tracking problem unknown input observer
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Summary:	This paper investigates the distributed fault-tolerant consensus tracking problem of nonlinear multi-agent systems with general incipient and abrupt time-varying actuator faults under cyber-attacks. First, a decentralized unknown input observer is established to estimate relative states and actuator faults. Second, the estimated and output neighboring information is combined with distributed fault-tolerant consensus tracking controllers. Criteria of reaching leader-following exponential consensus tracking of multi-agent systems under both connectivity-maintained and connectivity-mixed attacks are derived with average dwelling time, attack frequency, and attack activation rate technique, respectively. Simulation example verifies the effectiveness of the fault-tolerant consensus tracking algorithm.
ISSN:	2329-9266 2329-9274