船舶运动基于参数法的海浪方向谱估计

Directional spectral estimation of ship motion based on parameter method

船舶的运动控制受多种因素的影响,比如海浪的作用力大小、风力和海水温度等。而海浪的作用力大小对船舶的运动控制影响巨大,特别是在复杂环境中,精确的海浪作用力常常难以预测。本文针对船舶操纵过程中遇到的难题,采用先进的非线性控制算法建立了船舶的运动模型,然后通过参数控制法对海浪方向谱的实现原理进行了建模分析,建立了精确的波浪运动模型,最后采用Matlab软件,对此模型的时域响应性能进行仿真验证,从而获得良好的性能。

Ship motion control is affected by many factors, such as the force of ocean waves, wind and seawater temperature. The influence of the wave force on the motion control of the ship is very important, especially in the complex environment, the accurate wave force is often difficult to predict. In this paper, the ship motion model is established by using the advanced nonlinear control algorithm for the problems encountered in ship maneuvering. Then the principle of wave direction spectrum is modeled and analyzed by parameter control method, and an accurate wave motion model is established Finally, Matlab software was used to simulate the time-domain response of the model, and good performance was obtained.