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- W4313487639 abstract "This paper investigates the adaptive fixed-time formation control for multi-AUV systems (MASs) in the presence of model uncertainties, ocean current disturbances and unknown actuator faults. In order to improve the robustness of the system, an adaptive fixed-time integral sliding mode disturbance observer (AFISMDO) is designed to estimate the lumped disturbance composed of model uncertainties, ocean current disturbances and unknown actuator faults. Based on the designed observer, an adaptive fixed-time fault-tolerant controller (AFTFTC) is designed by combining nonlinear command filter and backstepping technique which can ensure that the trajectory tracking errors of the follower AUVs and the corresponding virtual leader AUVs converge to the origin within a fixed time, so as to achieve the purpose of formation. Compared with the traditional finite-time control, the convergence time for the closed-loop system is independent of the initial state. Finally, the simulation results show that the proposed control algorithm has superior control performance." @default.
- W4313487639 created "2023-01-06" @default.
- W4313487639 creator A5012120067 @default.
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- W4313487639 date "2023-02-01" @default.
- W4313487639 modified "2023-10-09" @default.
- W4313487639 title "Fixed-time formation control for AUVs with unknown actuator faults based on lumped disturbance observer" @default.
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- W4313487639 doi "https://doi.org/10.1016/j.oceaneng.2022.113495" @default.
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