Primary research on the system identification method of pitching and heave motion of composite trimaran

This article established the mathematical model of system identification of composite trimaran pitching and heave motion model based on the genetic optimization algorithm, using VB language to write the recognition software, Design and produce a composite trimaran test model, doing the free pitching and heaving decay test, then completing the pitching and heave motion system identification according to the test data, and got their motion equation which will be used to do the forecast, the results of forecast can well match with the test results, confirmed the feasibility of this set of identification method. Also using the simulation software called SIMULINK in MATLAB to simulate the vertical acceleration, getting the ideal forecasting result.