Design And Research Of The Push Fin Control System Based On The GA

As a special technical of ship reducing shake, it almost has one hundred years. In this period, people had made out all kinds of assume to reduce ship shaking. At present, there are three settings to reduce ship shaking. Among them stabilizer fin is the best in using and got widely used.But it has a defect:at the fast speed it' s ability of reducing shake is very poor. In order to improve the ability of reducing shake at highspeed, we designed another reducing setting-pushing fin.By the pool test , it proved that the pushing fin was good in reducing shake in all ship speed.First , in this article experiment fin and oar' s rising force coefficients were worked out;depended on experiment data. Because the designing fin and oar and the experiment fin and oar pro rata, so we can use the coefficients to calculate our designing fin and oar' s rising force.Secondly, constituted the control system of pushing fin, and studied its control scheme.Lastly, used Matlab to simulate our control system, and applied GA to optimize the parameters of PID controller;From the simulation result we can see the pushing fin has the ability of reducing the ship shake in all speed.