Event-Triggered Resilient Control for Interconnected Servo Systems Under Malicious Attacks

This article investigates the tracking control of interconnected servo systems, where Denial-of-Service attacks and false-data-injection attacks are considered. In order to ensure the control performance and security, a sliding mode tracking control scheme based on event triggered is designed. First, a mathematical model of the interconnected servo system subjected to hacking is established. Then, an adaptive sliding mode state observer is proposed to cope with the malicious attack. Third, a higher order sliding mode consistent tracking control method is proposed and the convergence of the tracking error is demonstrated. In addition, an event-triggered mechanism is introduced to save communication resources. Finally, simulation results demonstrate the effectiveness of the proposed algorithm.