Journal
INTERNATIONAL JOURNAL OF FUZZY SYSTEMS
Volume 25, Issue 1, Pages 395-406Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s40815-022-01444-3
Keywords
Autonomous underwater vehicles; Formation control; Nonsingular fast terminal sliding mode; Fuzzy logic control; Disturbance estimator
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This paper presents a novel disturbance estimator-based fast fuzzy terminal sliding-mode formation control method. The leader-follower formation control method is combined with path planning strategy based on artificial potential field to ensure collision-free and consensus movement for each AUV. An improved sliding-mode surface is incorporated into the controller for faster convergence rate away from the stable equilibrium. Fuzzy control rules derived from the Lyapunov energy function are designed to eliminate the chattering problem in the controller. A disturbance estimator is proposed to compensate for unknown dynamics and disturbances, enhancing the system's robustness and stability. Simulation and comparison results are provided to demonstrate the effectiveness of the proposed method.
This paper proposes a novel disturbance estimator-based nonsingular fast fuzzy terminal sliding-mode formation control method. The leader-follower formation control method is combined with the path planning strategy based on the artificial potential field to be collision-free and move in consensus for each AUV. An improved sliding-mode surface is incorporated into the controller, providing the system's state with a faster convergence rate away from the stable equilibrium. The chattering problem in the controller is eliminated by designing fuzzy control rules which are derived from the Lyapunov energy function. A disturbance estimator is proposed to compensate for unknown dynamic and disturbances, which enhances the robustness and stability of the system. Simulation and comparison results are provided to show the effectiveness of the proposed method.
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