Multi-loop networked control system design subject to interchange attack

This paper deals with the design problem of multiloop networked control system (NCS) under interchange attack. This is a new type of attack where the transmitted data are swapped between different control loops which can be more destructive than other types of attacks, such as denial-of-service (DoS) attack. In this context, multiple sampled-data control loops are first considered that use a shared communication network for data transmission. Then, the overall closed-loop systems with the proposed attack are formulated in a unified stochastic delay system. The proposed framework is also applicable to DoS attack. Based on Lyapunov-Krasovskii theory and stochastic analysis techniques, some conditions in terms of linear matrix inequalities (LMIs) are derived for the H infinity$$ {\mathcal{H}}_{\infty } $$ control design problem. Finally, two inverted pendula are utilized for simulation to show the effectiveness of the proposed method. Also, the effects of DoS attack and interchange attack are compared.