Real-time estimation of the ship manoeuvrable range in wind
Real-time estimation of the ship manoeuvrable range in wind
复制标题
船舶在风中可操纵范围的实时估计
DOI：
10.1016/j.oceaneng.2019.106396
复制
发表时间：
2019
影响因子：
5
通讯作者：
Iseki Toshio
中科院分区：
文献类型：
--
作者：
Yanfei Hong;Toshio Iseki and Ulrik Dam Nielsen;Iseki Toshio
本文提出了一种实时辨识船舶操纵运动方程水动力导数的方法。该方法不仅利用船舶运动数据，而且利用风场数据建立了连续自回归外生模型。该方法的主要优点是模型系数直接对应于水动力导数。辨识算法由无限冲激响应（IIR）数字滤波器和递归最小二乘法（RLS）组成。为了讨论所识别系数的可靠性，该程序被应用到一个全尺寸的船舶的数据和结果相比，由造船公司提供的水动力导数。此外，一个简单的导航支持系统，提出了使用所识别的水动力导数。该系统可以显示船舶在风况下的操纵范围，并显示其实用性。
A real-time identification procedure is applied totheestimation of hydrodynamic derivatives of ship manoeuvring equations. In the procedure, not only the ship motion data but also the wind data are used for making up a CARX (Continuous Auto Regressive eXogenous) model. The main advantage of the procedure is that the coefficients of the model directly correspond to the hydrodynamic derivatives. The identification algorithm consists of the IIR (Infinite Impulse Response) digital filters and RLS (Recursive Least Square) method. To discuss the reliability of the identified coefficients, the procedure is applied to a full-scale ship's data and the results are compared to the hydrodynamic derivatives provided by the shipbuilding company. Moreover, a simple navigation support system is proposed using the identified hydrodynamic derivatives. The system can indicate the ship manoeuvrable range under wind conditions and its usefulness is shown.