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Fixed-time sliding mode trajectory tracking control for marine surface vessels with input saturation and prescribed performance constraints
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Fixed-time sliding mode trajectory tracking control for marine surface vessels with input saturation and prescribed performance constraints
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Journal Article
Fixed-time sliding mode trajectory tracking control for marine surface vessels with input saturation and prescribed performance constraints
2024
Overview
This paper solves a fixed-time trajectory tracking control problem for a marine surface vessel in the presence of model uncertainties, external disturbances, input saturation and prescribed performance constraints. Firstly, a fixed-time disturbance observer (FXDO) is designed, which not only realizes fixed-time stability, but also solves the design method problem in the existing disturbance observer. Secondly, a fixed-time nonsingular terminal sliding mode manifold (FXNTSMM) with simple structures is designed, whereby the designed FXNTSMM reduces the calculation burden of the system. Thirdly, a fixed-time trajectory tracking control scheme in the presence of model uncertainties, external disturbances, input saturation and prescribed performance constraints is proposed based on the FXDO, the FXNTSMM and a prescribed performance function, and the entire constrained closed-loop control system is with fixed-time stability, simplicity and nonsingularity. Finally, several numerical simulation results are presented to demonstrate the effectiveness of the proposed trajectory tracking control scheme.
Publisher
Springer Netherlands,Springer Nature B.V
Subject
/ Control
