Decentralized Sampled-Data Control for Cyber-Physical Systems Subject to DoS Attacks

• Published in: IEEE systems journal Vol. 15; no. 4; pp. 5126 - 5134
• Main Authors: Li, Shi, Ahn, Choon Ki, Xiang, Zhengrong
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Control systems design; Cyber-physical systems; Cyberattack; Denial of service attacks; Denial-of-service (DoS) attacks; Denial-of-service attack; Dwell time; Feedback control; large-scale system (LSS); Large-scale systems; Nonlinear systems; Observers; Output feedback; sampled-data control (SDC); State observers; Switches; System effectiveness
• ISSN: 1932-8184; 1937-9234
• DOI: 10.1109/JSYST.2020.3019939

To handle the global output feedback sampled-data (OFSD) control problem for cyber-physical systems (CPSs) described by nonstrict-feedback large-scale nonlinear systems with denial-of-service attacks, a decentralized OFSD control strategy is proposed. As only the system output is measurable at sampling instants when the investigated CPS works well and all states are unmeasurable when attacks occur, a novel mode-dependent state observer and a decentralized OFSD controller are designed according to the idea of the average dwell time method. It is proven that the resulting closed-loop system is globally asymptotically stable. The developed strategy is applied to practical systems to demonstrate its effectiveness.