通过对三体船模的回转试验,测得不同转速和舵角下的回转直径,并得到回转过程中一系列横摇角变化曲线.在此基础上,建立船舶操纵和横摇运动模式系统辨识的数学模型,从系统辨识原理出发,确定目标函数.编写了一套基于Visual Basic 6.0的遗传算法系统辨识程序,该程序可通过限定约束条件对水面三体船模操纵和横摇的试验数据进行辨识.最后对结果进行分析,验证该方法的可行性.%In this paper, the author measured turning diameters with different rotation speed and different rudder angles,and got a series of rolling angle variation curve during the rotation process by carrying out trimaran model rotation test. On this basis, the author established maneuvering motion pattern and rolling motion pattern in the model system identification,and starting from the system identification theory,the author confirmed the target function. The author adapted a GA system identification program based on Visual Basic 6.0, which could identify the surface trimaran model maneuvering and tossing test data by limitting the restrained condition. At last,the method has been proved feasible after analysis of the results.
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