Security control for networked control system against DoS attacks: Adaptive variable‐step predictive approach

Abstract This paper investigates the adaptive variable‐step predictive (AVSP) control of networked control systems (NCSs) against denial‐of‐service (DoS) attacks. An adaptive variable‐step prediction approach based on cumulative error is formulated to ensure the security of the system against DoS attacks, under which the prediction step varies adaptively in each DoS attacks period. The underlying system is described as a switching system and is categorized into three operation modes based on the presence or absence of DoS attacks and the prediction step size. With piecewise Lyapunov function, sufficient conditions for the design of DoS‐period‐based mode‐dependent controller is established, and the effectiveness is verified by an example.