Quantized output feedback resilient control of uncertain systems under hybrid cyber attacks

• Published in: International journal of adaptive control and signal processing Vol. 36; no. 12; pp. 2954 - 2970
• Main Authors: Yu, Kun, Chang, Xiao‐Heng
• Format: Journal Article
• Language: English
• Published: Bognor Regis Wiley Subscription Services, Inc 01.12.2022
• Subjects: Control systems design; Controllers; Counters; Cybersecurity; Design techniques; guaranteed cost control; hybrid cyber attacks; Hybrid systems; Linear matrix inequalities; Mathematical analysis; Output feedback; Performance indices; signal processing; two quantized signals; uncertain systems
• ISSN: 0890-6327; 1099-1115
• DOI: 10.1002/acs.3496

Summary This article investigates the output feedback resilient control problem of an uncertain system with two quantized signals under hybrid cyber attacks. First, for uncertain systems, the output signal of the system and the output signal of the controller are quantized once by the quantizers before they are passed to the controller and the system respectively, thus affecting the signal with quantization error terms. At the same time, The adverse effects of hybrid cyber attacks, including denial‐of‐service attacks and deception attacks, are also taken into account during the signaling process. In this article, a guaranteed cost resilient controller design method is proposed for the above situation so that the closed‐loop system can be guaranteed to be stable or to meet the given performance index. In addition, by solving the given set of linear matrix inequalities, the design conditions for the relevant parameters required for the resilient controller can be obtained. Finally, the validity of the design method can be verified by simulation.