Research on Propulsion Motion Model System Identification Method of Trimaran

摘要

in this paper, we selected a kind of trimaran model to study its rapidity by theoretical research, ship model test and numerical simulation. Based on the rapidity test and ISIGHT-FD software platform, we set up mathematical model, selected the genetic algorithm method as system identification method. According to ship resistance and ship propelling, we analyzed the effect to its rapidity performance, hull, host, propeller match situation by lateral hulls arrangement. Finally, we made the residual resistance curve and open water efficiency curve, verified identify results and gave a prediction.