具有推力器故障的船舶动力定位系统的复合抗干扰控制

IF 1.5 4区 工程技术 Q3 ENGINEERING, MARINE
Ziwen Yu, Xinjiang Wei, Huifeng Zhang, Xin Hu, Jian Han
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引用次数: 0

摘要

研究了具有模型不确定性和海洋扰动的船舶动力定位系统在推力器故障下的抗扰动控制问题。针对海洋扰动,建立了随机扰动观测器(SDO)进行在线估计。对于推力器故障,采用由李雅普诺夫函数得到的自适应律进行评估。对于模型的不确定性,采用鲁棒控制项和自适应技术对其进行衰减。然后,将基于扰动观测器的控制(DOBC)、自适应技术和鲁棒控制项相结合,提出了一种复合抗干扰控制(CADC)策略,使船舶的位置和偏航角达到期望值。最后,通过仿真实例验证了该控制器的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Composite anti-disturbance control for ship dynamic positioning systems with thruster faults
Anti-disturbance control problem is studied for ship dynamic positioning systems with model uncertainties and ocean disturbances under thruster faults. For the ocean disturbance, a stochastic disturbance observer (SDO) is established to give the online estimation. For thruster faults, an adaptive law is used to evaluate, which is obtain from Lyapunov function. For model uncertainties, a robust control term with adaptive technology is used to attenuate it. Then, a composite anti-disturbance control (CADC) strategy is raised by combining disturbance observer-based control (DOBC), adaptive technology, and robust control term, which makes the position and yaw angle of ship reach the desired values. Finally, the simulation example proves the validity of the controller.
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来源期刊
CiteScore
3.90
自引率
11.10%
发文量
77
审稿时长
>12 weeks
期刊介绍: The Journal of Engineering for the Maritime Environment is concerned with the design, production and operation of engineering artefacts for the maritime environment. The journal straddles the traditional boundaries of naval architecture, marine engineering, offshore/ocean engineering, coastal engineering and port engineering.
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