Design of fin stabilizer control system based on quantitative feedback theory

This paper applies a control method based on quantitative feedback theory to the fin stabilizer control system. It describes the various system parameters uncertainty and performance indexes in the quantitative form. According to the definition, the controller is designed which can tolerate the parameters uncertainty and satisfy the performance indexes. The random wave interference model is established at various sea conditions of different wave direction angles. The simulation results show that the control strategy is effective to decrease the ship roll motion. Comparing with the traditional PID control strategy, the quantitative feedback theory control strategy has better robustness stability and damping effect.