Dual‐Channel Dynamic Event‐Triggered Finite‐Time Prescribed Performance Secure Control for Nonlinear Cyber‐Physical Systems Under Intermittent Denial‐of‐Service Attacks

ABSTRACT This paper investigates dual‐channel dynamic event‐triggered finite‐time prescribed performance adaptive secure control for nonlinear cyber‐physical systems with unmeasurable state variables, where the output signal of the system is subject to intermittent denial‐of‐service (DoS) attacks. First, a dual‐channel dynamic event‐triggered mechanism is proposed to effectively save communication resources in both sensor‐to‐controller and controller‐to‐actuator channels. To defend against intermittent DoS attacks and estimate unmeasurable states, an adaptive switching state observer is constructed. Then, a safety control method is proposed by utilizing the observer states and a barrier Lyapunov function. The results demonstrate that the designed controller can ensure that the system output converges to the prescribed neighborhood of the origin within a user‐specified finite time, while all signals in the closed‐loop system remain bounded under intermittent DoS attacks. Finally, simulation results verify the effectiveness of the proposed scheme.