Resilient observer-based control for cyber-physical systems under denial-of-service attacks

Abstract

This paper deals with the problem of resilient observer-based control for cyber-physical systems with multiple transmissions under Denial-of-Service (DoS) attacks. Instead of adopting the existing static output feedback controller, an observer-based controller is adopted. First, based on the property that the dwell-time of DoS is bounded, an interval partition technique is introduced to reduce the conservatism of stability analysis. Second, sufficient conditions for the desired observer-based controller is provided in terms of linear matrix inequalities (LMIs). Based on the obtained conditions, a resilient observer-based controller design strategy is provided to improve the resilience against DoS. Finally, a numerical example is given to show the effectiveness of the proposed interval partition technique and observer-based controller. It is shown that that more intensive DoS attacks can be tolerated.