Application of H∞ control in the marine vessel with wind disturbance

In this paper,the H_∞ control problem of marine vessel with wind disturbance has been addressed. An H_∞ analytical condition is derived by Lyapunov functional method. Based on the condition, we proposed an H_∞ controller which guarantees not only the asymptotic stability but also the prescribed H_∞ attenuation level of the marine vessel system. All the results are presented in terms of the linear matrix inequalities(LMIs). The results of simulation demonstrate the effectiveness of the proposed design method.