Abstract

This paper proposes an event-triggered adaptive fuzzy asymptotic predefined-time controller for uncertain nonlinear systems (UNS) subject to external disturbances. By introducing a set of well-designed asymptotic performance adjustment (APA) functions, we establish a general framework for analyzing asymptotic predefined-time stability (APDTS). Under the control scheme based on the established framework, the system state is guaranteed to converge to a controllable area around zero within a user-defined time and eventually asymptotically converge to zero. Finally, numerical simulations of a robotic arm system verify the effectiveness and superiority of control approaches.

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