基于支持向量机的四自由度船舶操纵运动盲预报(英文)

Blind Prediction of Ship Manoeuvring Motion in 4 Degrees of Freedom Based on Support Vector Machines

基于整体型数学模型,提出了一种应用支持向量机的包括横摇运动的四自由度船舶操纵运动盲预报方法。该方法仅仅依靠船舶运动状态参数就能实现盲预报。对某集装箱船进行了10°/10°、20°/20°Z形试验和35°舵角回转试验仿真;1%的20°/20°Z形试验仿真数据被用于训练支持向量,训练好的支持向量机被用来预报整个20°/20°Z形试验以及10°/10°Z形试验和35°舵角回转试验。通过将预报结果与仿真数据进行对比,验证了所提出预报方法的有效性,并证明了其良好的泛化能力。

Based on the whole ship model, a blind prediction method by using support vector machines is proposed for the 4 degrees of freedom ship manoeuvring motion including roll motion. The blind prediction is achieved relying only on the ship motion state parameters. 10°/10°, 20°/20° zigzag tests and 35°turning circle manoeuvre are simulated for a container ship. One percent of the simulation data of 200/20° zigzag test are used to train the support vectors; and the trained support vector machines is used to predict the whole 200/20° zigzag test. Besides, 10°/10° zigzag test and 35° turning circle manoeuvre are also predicted. The predicted results are compared with those of simulation tests to verify the prediction method and to demonstrate its good generalization performance.