Robust fixed-time trajectory tracking control of marine surface vessel with feedforward disturbance compensation

This paper proposes a novel robust fixed-time control approach for the trajectory tracking control of a fully actuated marine surface vessel (MSV) subject to system uncertainties and external disturbances. First, a nominal fixed-time controller is originally designed based on the bi-limit homogeneou...

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Published inInternational journal of systems science Vol. 53; no. 4; pp. 726 - 742
Main Author Yao, Qijia
Format Journal Article
LanguageEnglish
Published London Taylor & Francis 12.03.2022
Taylor & Francis Ltd
Subjects
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ISSN0020-7721
1464-5319
DOI10.1080/00207721.2021.1972354

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Abstract This paper proposes a novel robust fixed-time control approach for the trajectory tracking control of a fully actuated marine surface vessel (MSV) subject to system uncertainties and external disturbances. First, a nominal fixed-time controller is originally designed based on the bi-limit homogeneous method. The nominal fixed-time controller can guarantee the position and velocity tracking errors converge to zero in fixed time in the absence of lumped disturbance. Then, a new type of fixed-time disturbance observer is introduced to estimate the lumped disturbance in fixed time. Finally, a robust fixed-time controller is developed by integrating the nominal fixed-time controller with the fixed-time disturbance observer. The robust fixed-time controller can guarantee the position and velocity tracking errors converge to zero in fixed time even in the presence of lumped disturbance. Benefiting from the feedforward disturbance compensation, the robust fixed-time controller has the strong robustness and excellent disturbance attenuation capability. Numerical simulations and comparisons demonstrate the effectiveness and advantages of the proposed control approach.
AbstractList This paper proposes a novel robust fixed-time control approach for the trajectory tracking control of a fully actuated marine surface vessel (MSV) subject to system uncertainties and external disturbances. First, a nominal fixed-time controller is originally designed based on the bi-limit homogeneous method. The nominal fixed-time controller can guarantee the position and velocity tracking errors converge to zero in fixed time in the absence of lumped disturbance. Then, a new type of fixed-time disturbance observer is introduced to estimate the lumped disturbance in fixed time. Finally, a robust fixed-time controller is developed by integrating the nominal fixed-time controller with the fixed-time disturbance observer. The robust fixed-time controller can guarantee the position and velocity tracking errors converge to zero in fixed time even in the presence of lumped disturbance. Benefiting from the feedforward disturbance compensation, the robust fixed-time controller has the strong robustness and excellent disturbance attenuation capability. Numerical simulations and comparisons demonstrate the effectiveness and advantages of the proposed control approach.
Author Yao, Qijia
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  organization: Beijing Institute of Technology
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Snippet This paper proposes a novel robust fixed-time control approach for the trajectory tracking control of a fully actuated marine surface vessel (MSV) subject to...
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SubjectTerms Attenuation
Compensation
Control systems design
Controllers
Convergence
Disturbance observers
Feedforward control
fixed-time control
fixed-time disturbance observer
Marine surface vessel
Robust control
Sea vessels
Tracking control
Tracking errors
Trajectory control
trajectory tracking control
Title Robust fixed-time trajectory tracking control of marine surface vessel with feedforward disturbance compensation
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