基于RMPC和横摇约束的欠驱动船路径跟踪控制
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作者:
作者单位:

1.上海海事大学;2.广东海洋大学

作者简介:

通讯作者:

中图分类号:

U664.82

基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)(52171313,52001197);湛江市海洋青年人才创新项目(2021E05002)


Underactuated ship path following control based on RMPC and roll constraints
Author:
Affiliation:

1.Shanghai Maritime University;2.Guangdong Ocean University

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan);Zhanjiang Ocean Youth Talent Innovation Project

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    摘要:

    基于自适应视线制导方法(ALOS)、有限时间扩张状态观测器(FTESO)和鲁棒模型预测控制(RMPC)提出了一种基于横摇约束的船舶路径跟踪控制方法。ALOS通过路径点自动更新可接受半径,获得更灵活的机动性;FTESO用于船舶运动状态和外部干扰的估计,RMPC控制器设计中将输入约束、横摇约束和束和无限时域性能指标约束纳入优化目标,转化为线性矩阵不等式凸优化,进行多目标协同控制。根据Lyapunov稳定性理论和齐次理论,确保系统的闭环稳定性及有限时间内的收敛性。仿真结果表示,虽然经过极限角度时所提方法路径跟踪超调量略大,但所提方法减摇率为83.40%,与LOS+MPC方法相比减摇率提升了51.28%。验证了所提控制方法的有效性和鲁棒性,可为欠驱动船舶舵减摇控制设计提供参考。

    Abstract:

    In this study, a ship path following control method with roll constraints is proposed utilizing the adaptive line-of-sight (ALOS) method, finite time extended state observer (FTESO) and robust model predictive control (RMPC). ALOS dynamically updates the acceptable radius through waypoints to enhance maneuverability. The FTESO is deployed for estimating ship motion states and external disturbances. In the design of the RMPC controller, input constraints, roll constraints, and infinite time domain performance indicators are integrated into the optimization objectives, reformulated as convex optimization problems expressed as linear matrix inequalities for multi-objective cooperative control. According to Lyapunov stability theory and homogeneity theory, the closed-loop stability and finite-time convergence of the system are ensured. Simulation results indicate that although the proposed method exhibits slightly larger overshoot in path following when reaching extreme angles, the roll reduction rate of the proposed method is 83.40%. Compared with the LOS+MPC method, the proposed method demonstrates a 51.28% improvement in roll reduction rate. The effectiveness and robustness of the proposed control method have been verified, providing valuable references for the design of underactuated ship rudder roll stabilization controllers.

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  • 收稿日期:2024-04-13
  • 最后修改日期:2024-06-28
  • 录用日期:2024-07-06
  • 在线发布日期: 2024-08-01
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