水动力学研究与进展B辑
水動力學研究與進展B輯
수동역학연구여진전B집
Journal of Hydrodynamics
2015年
4期
502-512
,共11页
王雪刚%邹早建%侯先瑞%徐锋
王雪剛%鄒早建%侯先瑞%徐鋒
왕설강%추조건%후선서%서봉
ship manoeuvring%hydrodynamic coefficients%mathematical model%system identification%ε-support vector regression
Based on theε-support vector regression, three modelling methods for the ship manoeuvring motion, i.e., the white-box modelling, the grey-box modelling and the black-box modelling, are investigated. Theoo10/10,oo20/20 zigzag tests and the o35 turning circle manoeuvre are simulated. Part of the simulation data for theoo20/20 zigzag test are used to train the support vectors, and the trained support vector machine is used to predict the wholeoo20/20 zigzag test. Comparison between the simula- ted and predictedoo20/20 zigzag test shows a good predictive ability of the three modelling methods. Then all mathematical models obtained by the modelling methods are used to predict theoo10/10 zigzag test ando35 turning circle manoeuvre, and the predicted results are compared with those of simulation tests to demonstrate the good generalization performance of the mathematical models. Finally, the modelling methods are analyzed and compared with each other in terms of the application conditions, the prediction accuracy and the computation speed. An appropriate modelling method can be chosen according to the intended use of the mathematical models and the available data for the system identification.