摘要
为研究船舶在高海况下的非线性运动特性,基于水池不规则波中的模型试验数据,采用系统辨识的方法模拟船舶在高海况下的非线性运动响应.采用非线性NARMAX模型确定此非线性运动系统.采用谐波探测法计算了该系统的一阶和二阶频率响应,并与传统交叉谱方法进行了比较.结果表明,该方法可有效计算出高海况下舰船的非线性运动频率响应.
A method based on system identification technique was developed to solve the nonlinear response functions of ship motion in high sea state using the model tested data from irregular wave in water tank. Nonlinear auto regressive moving average （NARMAX） model was applied to confirm the non-linear motion system of the ship. The first order and the second order frequency response functions were calculated by using harmonic probing method. Compared with conventional cross spectrum metod, the proposed method can calculate the non-linear frequency response functions effectively.
出处
《大连海事大学学报》
EI
CAS
CSCD
北大核心
2008年第4期67-71,共5页
Journal of Dalian Maritime University
基金
国防预研基金资助项目(9140A14010508CB0103)
作者简介
张恒（1981-），男，湖北襄樊人，博士研究生，E-mail：zhanghenghb@163．com；
李积德（1939-），男，辽宁大连人，教授，博士生导师．
