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减摇航向自动舵的简捷鲁棒优化控制算法

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Keywords: 自动舵,舵减摇,鲁棒优化,遗传算法

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Abstract:

为使航向自动舵在简捷鲁棒控制的基础上实现舵减摇功能,在小幅度增加控制成本的前提下增强船舶抗风浪能力,设计具有船舶航向保持、航向改变和舵减摇三种工作模式的简捷鲁棒优化控制系统.该系统在船舶运动状态和海况发生变化后,通过检测航向偏差和横摇角的标准差值是否超出设定阈值,进而适时地利用遗传算法优化控制系统参数.以非线性船舶运动模型为控制对象的仿真试验结果表明,该控制系统在船舶横摇自然频率附近较宽频带内减摇效果显著,并具有较好的转向和航向保持性能.控制器参数具有较好的自适应调整能力.

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