Ship speed control, which is important composition of ship synthetic control, is a high order, nonlinear, time-varying system, so it is very difficult to gain good performance with traditional control.

• 舰船航速控制是舰船航行综合控制的重要组成部分,它是一个复杂的高阶、非线性、时变系统, 采取传统的控制方法难以获得良好的控制效果。