摘要
在波浪的影响下,常规的船舶横摇运动时,没有建立横摇运动的模型,降低了预测的精度,不能有效地减小船舶的横摇,存在船舶耐波性较差的问题。当前方法进行船舶横摇运动的建模时,不能减小船舶的横摇,降低了船舶的耐波性。提出一种基于时间序列预测的船舶横摇运动数学建模研究方法。该方法建立波浪扰动船舶横摇运动模型,依据随机的过程理论,求出空间上某固定点波浪倾角的数学模型,依据横摇运动模型得出横摇运动的数据。对船舶横摇运动进行时间序列预测克服了传统方法存在的弊端,运用时间序列的分析方法建立AR模型,应用于船舶横摇运动的时间序列的预测,减小船舶的横摇性,提高了船舶的耐波性,完成对波浪影响下船舶横摇运动的时间序列预测数学建模的研究。实验的结果表明,利用该方法能有效地减小船舶的横摇,提高船舶的耐波性。
Under the influence of wave, the conventional ship rolling motion, did not establish the model of the rolling motion, reduce the accuracy of the forecast, can't effectively reduce the roll of the ship, ship's seakeeping poor problems.When the current method is used to model the rolling motion of the ship, it can not reduce the rolling of the circulation and reduce the ship's seakeeping ability. A method for mathematical modeling of ship rolling motion based on time series prediction is proposed. The method to establish the wave disturbance of ship roll motion model, based on the theory of random process, it is concluded that mathematical model of the space of a fixed point on the wave Angle, on the basis of rolling motion model of rolling motion data are obtained. For ships rolling motion time series prediction to overcome the insufficiency of the traditional method, using time series analysis method to establish the AR model, is applied to ship roll motion of time series prediction, reduce the ship roll, improves the seakeeping of ships, complete the wave under the influence of ship rolling motion time series prediction research of mathematical modeling. The experimental results show that the method can effectively reduce the ship's roll and improve the ship's wave tolerance.
出处
《舰船科学技术》
北大核心
2017年第22期13-15,共3页
Ship Science and Technology
基金
湖北省武汉市课题(2017118)
关键词
波浪影响
横摇运动
时间序列
数学建模
wave effect
rolling motion
time series
mathematical modeling
