Predefined-time adaptive event-triggered control for nonlinear time-varying systems with full-state constraints and input saturation

Abstract

In this paper, the problem of predefined-time adaptive event-triggered control of a class of nonlinear time-varying systems with full-state constraints and input saturation is investigated. By integrating the state-dependent function into the backstepping framework, the prerequisite feasibility assumption in traditional control methods is eliminated. Then, the challenges posed by unknown time-varying parameters and input saturation are handled through the introduction of auxiliary signals. Compared to existing studies, this paper proposes a unified adaptive event-triggered control framework that realizes the predefined-time steady-state control of time-varying systems under multiple constraints for the first time. The proposed control approach not only ensures the satisfactory control performance of the system but also significantly alleviates the transmission burden within the information channel. Finally, two simulation examples are presented to further demonstrate the effectiveness and practicality of the proposed control scheme.