Ship´s fin stabilizer H/sup 8/ control under sea wave disturbance

In the absence of random sea wave disturbance, roll attitude control has been used in engineering by means of a fin stabilizer. This paper proposes a method to design the ship´s fin stabilizer roll attitude control system using H/sup 8/ control theory. The problem of the ship´s fin stabilizer system not matching H/sup 8/ control theory because of the characteristics of the control system is solved. At the same time, a new method is proposed to solve the problem of the frequency system object almost matching the frequency band of random sea wave disturbance.