Underactuated ship path tracking based on robust line-of-sight guidance method

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  • (Navigation College, Dalian Maritime University, Dalian 116026, China)

Received date: 2023-09-15

  Revised date: 2023-12-06

  Accepted date: 2023-12-06

  Online published: 2023-12-06

Abstract

A neural network sliding mode controller based on the robust line-of-sight (LOS) guidance method for the path tracking of underactuated ship was proposed to solve the problem of underactuated and ship model uncertainty. Firstly, the robust LOS was utilized to solve the problem that the ship’s input degrees of freedom dimension were less than the output degrees of freedom dimension, and at the same time, to reduce the influence of the differences of ship kinematics. Secondly, the controller was designed by combining radial basis function neural network and sliding mode to reduce the effect of external disturbances and realize the path tracking of underactuated ships. Finally, the Lyapunov stability theory was applied to prove the stability of the guidance system and the control system. A robust line-of-sight guidance method was introduced to  design the guidance system, taking into account the influence of ship kinematics differences while reducing external interference. The simulation experiments respectively realize the linear path tracking and curved path tracking of underactuated ships, and verify the effectiveness and feasibility of the designed controller.

Cite this article

XU Shuang, LIU Cheng, GUO Weili . Underactuated ship path tracking based on robust line-of-sight guidance method[J]. Journal of Dalian Maritime University, 2024 , 50(1) : 20 -27 . DOI: 10.16411/j.cnki.issn1006-7736.2024.01.003

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