Strategy study on combined stabilization control of rudder and tank

Based on system mathematical model of ship-passively controlled-tank, a mathematical model of combined stabilization of rudder and passively controlled anti-rolling tank is proposed in this paper according to rudder roll stabilization, identify system parameters on line and predict rolling motion by using Kalman filter method, the predicted signal is utilized to achieve the phase difference holding between the roll and liquid movement, then propose to utilize the composite rolling stabilization of rudder, and calculate the control rudder angle by using LQG method, and effective roll stabilization can be achieved under different sailing condition and sea state after simulation.