Security control for networked control systems with randomly occurring integrity check protection subject to randomly occurring zero-value attacks

• Published in: Journal of the Franklin Institute Vol. 356; no. 18; pp. 11456 - 11472
• Main Authors: Gao, Mengzhou, Feng, Dongqin
• Format: Journal Article
• Language: English
• Published: Elmsford Elsevier Ltd 01.12.2019; Elsevier Science Ltd
• Subjects: Computer simulation; Control stability; Control systems; Control systems design; Energy costs; Feedback control; Feedback control systems; Independent variables; Integrity; Linear matrix inequalities; Random variables; Security systems; Simulation; Systems stability
• ISSN: 0016-0032; 1879-2693; 0016-0032
• DOI: 10.1016/j.jfranklin.2018.08.033

This paper investigates the problem of secure control for networked control systems (NCSs) under randomly occurring zero-value attacks (ROZVAs). Specifically, ROZVAs only offset the true signal without injecting obfuscated information or noises, and possess the minimum energy of the added malicious information. To protect system stability against ROZVA, randomly occurring integrity check protection (ROICP) is introduced which prevents malicious data injection with less energy cost than persistently occurring protection. Besides the random phenomena of ROZVA and ROICP, which are characterized by two mutually independent random variables obeying the Bernoulli distribution, the randomly occurring time delays caused by ROICP are also considered in system modelling. According to the built stochastic linear system model, security analysis of the NCS with ROICP subject to ROZVA is carried out and sufficient condition for stochastic stability is derived via a linear matrix inequality (LMI) approach. Based on the proposed condition, a compensation feedback controller is designed to facilitate system stability. Finally, simulation results show the effectiveness of the proposed method.