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Extended observer-based hybrid tracking control strategy for networked system with FDI attacks |
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| Authors: | Longyu Xu Yong Chen Meng Li Longjie Zhang Gafary Mahmoud |
| Affiliation: | 1. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China
Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China Contribution: Data curation, Investigation, Methodology, Writing - original draft;2. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China;3. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China Contribution: Funding acquisition, Resources, Supervision;4. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China Contribution: Data curation, Formal analysis, Writing - review & editing;5. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 China |
| Abstract: | This paper studies the speed tracking control of networked control systems (NCSs) with external disturbance and false data injection (FDI) attacks. First, the system model with external disturbances and FDI attacks is built. Then, an extended observer based on discrete time sliding function and neural network (NN) is proposed to observe the extended states and suppress the effect of external disturbance and FDI attacks. Furthermore, a novel hybrid discrete-time sliding mode control (HDSMC) strategy combining discrete time sliding mode control with super-twisting control is designed to perform closed-loop control of the system, in which the exponential term and nonlinear term are constructed to restrain the jitters. The convergence and reachability of the sliding motion are proofed. Finally, the validity and feasibility of the proposed methods are proved by simulations and experiments. |
| Keywords: | extended observer FDI attacks HDSMC NCSs tracking control |