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Issue:
Model Free Ship Course-Keeping Control
Author(s):
ZHANG Yuxi
Pages:
9
-
12
Year:
2015
Issue:
3
Journal:
Navigation of China
Keyword:
ship engineering
;
ship course control
;
input saturation
;
neural network
;
backstepping
;
Abstract:
针对非线性船舶航向运动数学模型中存在的显著不确定性问题及其控制器输入饱和限制问题,提出一种基于Backstepping的直接自适应神经网络控制方法.采用Backstepping方法对船舶航向控制系统进行递归式设计并借助一种饱和内补偿辅助系统处理系统中的输入饱和限制问题;同时,从实际应用的角度出发,充分考虑系统中存在的显著不确定性并运用径向基神经网络对不确定性进行估计和补偿,使所设计的控制器更贴近工程应用.仿真计算结果验证了所提控制方法在船舶航向控制系统中的有效性,可实现高精度的航向保持控制.
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