Event-Triggered Security Output Feedback Control for Networked Interconnected Systems Subject to Cyber-Attacks

This article studies the security of networked interconnected systems (NISs) subject to cyber-attacks based on a new event-triggered mechanism (ETM). NISs with spatially distributed subsystems are vulnerable to cyber-attacks. With a new concept of security control, attention is focused on designing...

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Published inIEEE transactions on systems, man, and cybernetics. Systems Vol. 51; no. 10; pp. 6197 - 6206
Main Authors Gu, Zhou, Park, Ju H., Yue, Dong, Wu, Zheng-Guang, Xie, Xiangpeng
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Chemical reactors
Control stability
Control systems
Cyber attacks
Cybersecurity
Decentralized control
event-triggered control
Feedback control
Interconnected systems
networked interconnected control systems
Output feedback
Quality of service
Security
Stability analysis
Subsystems
Symmetric matrices
System effectiveness
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Summary:This article studies the security of networked interconnected systems (NISs) subject to cyber-attacks based on a new event-triggered mechanism (ETM). NISs with spatially distributed subsystems are vulnerable to cyber-attacks. With a new concept of security control, attention is focused on designing a novel ETM together with a decentralized output feedback control (DOFC) scheme such that the NIS subject to cyber-attacks is stable in secure sense. Under the proposed ETM, the average data-releasing rate over the whole operating period can be extremely decreased, thereby reducing the burden of network bandwidth, computation, and battery-supply. Moreover, during the system with external disturbance or attack on the communication network, more transmission-events can be generated than other periods. As a result, the desired control performance can be achieved. By using stochastic analysis techniques and Lyapunov stability theory, sufficient conditions are derived to obtain both the controller gains and the parameters of the ETM. Numerical simulation of chemical reactor systems is given to illustrate the advantages and effectiveness of the proposed theories and design techniques.
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ISSN:2168-2216
2168-2232
DOI:10.1109/TSMC.2019.2960115