Authors : Maryam Fattahi and Ahmad Afshar
Abstract: The object of this article is to propose novel observer-based resilient control for Networked Control Systems (NCS) against cyber-attacks to sensor. It is assumed system is under cyber-attacks that occurred in sensor such that attacker can access to sensor and consequently injects false data to sensor. To achieve resilience in such conditions, at first a novel observer is proposed in order to estimate the actual states of system. Then a novel observer based controller is proposed in order to NCS in conditions of attack remains stable. Applying Lyapunov-Krasovskii functional method, delay dependent resilient criterion is established to show the exponential behavior of NCS in such conditions. Finally, for evaluating results, a practical example will be discussed.
Maryam Fattahi and Ahmad Afshar, 2020. Observer Based Resilient Control of Networked Control Systems Against Cyber Attacks to Sensor. International Journal of Signal System Control and Engineering Application, 13: 66-74.