Consensus of Switched Nonlinear Multiagent Systems Subject to Cyber Attacks

• Published in: IEEE systems journal Vol. 16; no. 3; pp. 4423 - 4432
• Main Authors: Li, Sheng, Zou, Wencheng, Guo, Jian, Xiang, Zhengrong
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.09.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Actuators; Algorithms; Channels; Communication channels; Consensus protocol; Cyber attacks; Cyberattack; Cybersecurity; Denial of service attacks; Denial-of-service attack; Fault tolerant systems; fault-tolerant consensus; Graph theory; Liapunov functions; Multiagent systems; multiagent systems (MAS); Nonlinear systems; Performance degradation; security control; switched systems; Switches; System theory; Systems theory; Topology
• ISSN: 1932-8184; 1937-9234
• DOI: 10.1109/JSYST.2021.3110501

In this article, the output consensus problem is investigated for a class of switched nonlinear multiagent systems, where denial-of-service attacks and faults are considered in communication channels and agents' actuators, respectively. The cyber attacks can damage the communication channels, which will cause the consensus performance degradation or even failure to achieve consensus. Compared with the existing results on consensus of multiagent systems under cyber attacks, the agents' dynamics in this article are described by higher order heterogeneous switched nonlinear systems. The cyber attacks, actuator faults, asynchronous switchings, and the high complexity of the system make the existing consensus algorithms ineffective. A novel control scheme for the output consensus of the multiagent system subject to cyber attacks is proposed. By the graph theory, switched system theory and Lyapunov function method, sufficient conditions are presented to check whether the consensus objective can be achieved. Finally, the effectiveness of the proposed scheme is illustrated by two numerical simulations.