Sliding mode strategies for monitoring and compensation of cyber-attacks to Cyber-Physical Systems

In this paper, the problem of detection and reconstruction of cyber-attacks in linear cyber-physical systems is considered. The class of cyber-attacks described in this paper can corrupt the states or the outputs of a cyber-physical system. An attack monitor based on High-Order sliding mode is proposed to reconstruct the cyber-attack. A First Order Approximation Filter is proposed to ensure global stability and convergence results. Using sliding mode techniques, an attack compensation is developed for square plants, guarateeing finite time convergence to the output tracking while rejecting the effects of the cyber-attack. Copyright (C) 2020 The Authors.