A secure strategy for a cyber physical system with multi-sensor under linear deception attack. Issue 13 (September 2021)

• Record Type: Journal Article
• Authors: Wang, Caiyun; Huang, Jiahao; Wang, Di; Li, Fangfei
• Is Part Of: Journal of the Franklin Institute. Volume 358:Issue 13(2021)
• Page Start: 6666
• Page End: 6683
• Publication Date: 2021-09
• Subjects: Science -- Periodicals; Technology -- Periodicals; Patents -- United States -- Periodicals; 505
• DOI: 10.1016/j.jfranklin.2021.06.029
• Languages: English
• ISSNs: 0016-0032

Abstract

Abstract: Linear deception attacks can bypass the χ 2 detector by tampering with data. In this paper, we provide a secure strategy for a cyber physical system (CPS) against such attacks. In response to these attacks in multi-sensor system, we encrypt the innovation sequence by a watermark, so that they can help the χ 2 detector better detect the original undetected linear deception attacks when the attacker does not know the existence of the watermark. Simultaneously, when the attacker has information about the watermark, the estimated performance and control performance will not be reduced by adjusting the parameters of the watermark. Finally, the effectiveness of this defense strategy against deception attacks is verified by a numerical example.