Study of joint control system of main/flapped fin stabilizer

A ship fin stabilizer´s joint control system is proposed and studied. The paper studies modeling of the system by utilizing the weighing least square algorithm upon the fin stabilizer´s hydrodynamics. Considering the stochastic measuring noise and practicability of engineering, the paper adopts a Kalman filter to estimate the state variables, on the basis of which this paper employs LQG control theory to design the system. Finally, simulation of the system is carried out, the result of which shows that the new project has more obvious efficiency than a traditional fin stabilizer regarding stabilization and saving power.