Research of Combined Rudder and Fin Stabilizer Control Strategy for Ship

To further reduce the roll that caused by sea waves, a control method for ship roll reduction based on combined rudder and fin stabilizer is designed. The four freedoms ship mathematical model is constructed. The influence of phase relationship between rudder and fin on anti-roll performance is considered in the controller design. The parameters of the controller are determined according to the phase matching relationship between rudder and fin. The heading control performance and roll reduction of ship are compared and analyzed by simulation. Finally, it is concluded that the roll reduction performance of combined rudder and fin stabilizer is better than linear quadratic regulator (LQR) fin roll stabilization.