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An Actuator Intrusion Detection Mechanism for Event-Triggered Moving Target Defense Control

A detection scheme for the presence of actuator intrusions on cyber-physical systems is proposed through a combination use of a switching controller (SC) and an event-triggered control scheduling mechanism. The paper first shows the boundedness property of the system trajectories in the presence of actuator intrusion and derives an upper bound of their deviation from the trajetories that result from an optimal control law; The paper then proposes a mechanism for detecting the presence of intrusion on the system actuators.