Resilient Control of Cyber-Physical System Using Nonlinear Encoding Signal Against System Integrity Attacks

• 成果类型: Article
• 署名作者: Joo, Youngjun; Qu, Zhihua; Namerikawa, Toru
• 署名单位: LG Corporation; LG Electronics; State University System of Florida; University of Central Florida; Keio University
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2020.3034195
• 发表日期: 2021
• 页码: 4334-4341
• 关键词: Cyber-physical systems; resilience; communication networks; control systems; Robustness; Chaotic communication; Delay effects; attack-resilient control; chaotic oscillator; Cyber-physical system (CPS); system integrity attack

摘要

In this article, we propose an attack-resilient control structure for a cyber-physical system (CPS) to enhance the CPS security against stealthy system integrity attacks that manipulate the state of the physical plant while undetected. With the help of nonlinear encoding/decoding components, the proposed structure can detect stealthy attacks and preserve the nominal performance without considering attacks. Meanwhile, for avoiding the eavesdropping of transmitted signals used to synchronize encoding/decoding components between the physical and cyber layers, the chaotic oscillators are employed for the secure communication. The resilience against the malicious attacks and the robustness under the time delay and nonlinear components of the proposed CPS structure are investigated in view of input-to-state stable framework. Simulations for quadruple-tank process are performed to validate the performance of the proposed method.