4.6 Article

Dynamic Threshold Finite-Time Prescribed Performance Control for Nonlinear Systems With Dead-Zone Output

Journal

IEEE TRANSACTIONS ON CYBERNETICS
Volume -, Issue -, Pages -

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCYB.2023.3279841

Keywords

Adaptive tracking control; command filter back stepping; dead-zone output; prescribed performance

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This article investigates the tracking control problem for nonlinear systems. An adaptive model is proposed to address the control challenge caused by the dead-zone phenomenon. Drawing inspiration from existing control schemes, a novel dynamic threshold scheme is developed to improve resource utilization efficiency. The suggested control strategy ensures bounded system signals and the validity of the simulation results has been verified.
This article investigates the tracking control problem for nonlinear systems. An adaptive model is proposed to represent the dead-zone phenomenon and solve its control challenge with a Nussbaum function in conjunction. Drawing inspiration from the existing prescribed performance control schemes, a novel dynamic threshold scheme is developed that fuses a proposed continuous function with a finite-time performance function. A dynamic event-triggered strategy is applied to reduce the redundant transmission. The proposed time-varying threshold control strategy has fewer updates than the traditional fixed threshold and improves the efficiency of resource utilization. A command filter backstepping approach is employed to prevent the complexity explosion faced by the computation. The suggested control strategy ensures that all system signals are bounded. The validity of the simulation results has been verified.

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