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吊舱推进船舶运动数学模型及其在航海模拟器中的应用

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Keywords: 船舶运动数学模型,吊舱推进器,航海模拟器,不确定度分析

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Abstract:

应用MMG分离建模思想,建立配备吊舱推进器的半潜船四自由度运动数学模型,利用回归公式估算POD桨的推力和扭矩,用经验公式估算伴流分数和推力减额.在航海模拟器中,通过硬件信号控制POD桨的转速和旋转角度,并将其传输给船舶运动数学模型模块,采用四阶龙格—库塔法积分求解船舶运动微分方程组,获得实时船舶运动态势,再将其传递给航海模拟器中的其他模块,实现人—机交互.以半潜船“泰安口”为例,建立POD桨的水动力性能数学模型以及半潜船的运动数学模型.与实船海试试验结果比对,不确定度在20%以内,能够满足航海教学培训和工程论证需要.

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