It is well known that, as ship roll motion is the most important reason which leads to ship capsizes, it is the most dangerous threat to the safety of ship.
船舶横摇运动是构成对船舶安全威胁最为危险的摇荡运动，它是导致船舶倾覆的最主要原因。
On the base of a great deal of reference literatures, intelligent PID control algorithm of ship roll motion based on dyadic wavelet neural network has been proposed.
在研究大量参考文献的基础上，本文提出了船舶横摇运动基于二进小波神经网络整定的智能PID控制算法。
The results indicate that the new path integration method is efficient in the studying the probability distribution of ship nonlinear roll motion from the numerical simulation results.
数值模拟的结果表明新的路径积分法对研究船舶非线性横摇运动概率密度分布是十分有效的。
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