A Leader-Follower Set-theoretic Approach for Cyber-Physical Systems against Denial-of-Service Attacks

In this paper, a novel control architecture capable of managing denial-of-service attacks affecting the communication links between a group of interconnected systems and remote controllers is presented. The basic idea relies on the representation of the interconnected cyber-physical system as a leader-follower configuration so that adequate control actions are computed in order to isolate the attacked unit that otherwise could compromise system operations. Simulations on a multi-area power system confirm that the proposed control scheme can reconfigure the leader-follower structure in response to denial-of-service (DoS) attacks occurring on both sensor-to-controller and controller-to-actuator channels.