Adaptive non-singular finite time control of nonlinear disturbed cyber-physical systems with actuator cyber-attacks and time-varying delays

Abstract

This study presents a novel adaptive non-singular Terminal Sliding Mode (TSM) control procedure for the speedy and finite time stabilization of nonlinear Cyber-Physical Systems (CPSs). By employing the proposed non-linear sliding surface, the reaching phase is eliminated and the entire system’s robust performance is ameliorated. The presented online adaptive laws deal with the unwanted disturbances, actuator cyber-attacks, and time-varying delays in such a way that there is no need to recognize their upper bounds. The designed novel adaptive non-singular TSM control strategy guarantees strong robustness of the non-linear CPSs exposed to unwanted disturbances, actuator cyber-attacks and time-varying delays. It also prepares a steady response, pliable and high-precision performance, smooth control, chattering-free operation, without transient oscillations and appropriate convergence in the finite time. Numerical simulation outcomes show the proposed adaptive non-singular TSM control technique’s effectiveness and success compared to the outcomes of State-Feedback Control (SFC), conventional Sliding Mode Control (SMC) and integral-type SMC techniques.