抗随机干扰的船舶动力系统混合控制方法

Hybrid control method for ship power system against stochastic disturbance

在随机干扰下,船舶航行的动力稳定性控制系统是一个多变量的非线性系统,通过船舶动力系统混合控制优化设计,提高船舶航行动力输出的稳定性。提出一种基于模糊PI双控制的船舶动力系统混合控制方法。构建船舶动力输出控制的约束参量模型,采用稳态误差修正方法进行船舶动力输出的误差反馈控制,结合模糊PI控制方法进行船舶动力输出的自适应调节,实现船舶动力双环自镇定反演控制。仿真结果表明,采用该方法进行船舶动力系统混合控制和输出稳定性调节,控制过程的稳定性较好,动力输出的鲁棒性较高,抗随机干扰性较强。

Under random disturbance, the dynamic stability control system of ship navigation is a multivariable nonlinear system. The stability of ship navigation power output can be improved by optimizing the hybrid control design of ship power system. A hybrid control method of ship power system based on fuzzy Pi dual control is proposed. The constraint parameter model of ship power output control is constructed and the error feedback control of ship power output is carried out by using steady-state error correction method. Combined with fuzzy Pi control method, the self-adaptive control of ship power output is realized. The simulation results show that the hybrid control and output stability adjustment of ship power system are carried out by this method. The stability of the control process is better, the robustness of the dynamic output is higher, and the resistance to random interference is stronger.