Multiple Motors Collaborative Motion of Cyber-Physical System under DoS Attack

This paper focuses on the adverse effects of denial of service (DoS) attacks in cyber-physical systems (CPSs) on coordinated motion control of multiple linear switched reluctance motor (LSRM) systems. Based on the online solution and constraint processing of model predictive control (MPC), which is designed as the control method in this paper. First, the multiple LSRMs system is modeled as a linear time-invariant discrete system through the three motor's topology and mathematical model. Then, the DoS attack on the control channel between the controller and the drive module is considered. The attack process is converted into a constrained packet loss process to achieve the dual constraints of attack's duration time and activation time. Moreover, the model prediction algorithm's control and terminal constraints are considered in the finite time domain, and MPC constraints and cost function are constructed to prove the asymptotic stability of the multiple LSRMs system. Finally, under different cyber conditions of the multiple LSRMs system, simulation results are given to verify that the cyber compensation strategy designed in this paper reduces the impact of DoS attacks on the effect of multiple LSRMs cooperative motion tracking.