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논문 기본 정보

저자정보
(Sejong University) (Sejong University)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제75권 제3호
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    초록·키워드

    This paper addresses the path-following problem of an unmanned surface vehicle (USV) that must track a predefined path while maintaining a constant surge speed. To this end, the surge speed and yaw rate errors of the USV are formulated as sliding variables and a barrier function-based adaptive sliding mode controller is designed to ensure that the surge speed and yaw rate error converge within a predefined barrier. By incorporating a quasi–positive definite barrier function into the adaptation law, the proposed method mitigates the gain overestimation and the resulting chattering issues commonly observed in conventional adaptive sliding mode control. Unlike existing adaptive sliding mode control schemes, the proposed control strategy allows the convergence region and convergence time to be explicitly defined independently of the upper bound of disturbances, thereby preserving the sliding motion even when disturbances vary rapidly. Furthermore, the Lyapunov stability theory is employed to theoretically establish the finite-time stability of the closed-loop system. In addition, numerical simulations are conducted to verify the performance of the proposed controller.

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      UCI(KEPA) : I410-151-26-02-096343872