基于 AMESim 对波浪控制平台电液伺服系统仿真与优化

摘要

以荷兰某公司设计的波浪控制平台为研究对象，对其主要的液压元件添加传递函数，并建立电液伺服控制系统传递函数方块图。然后通过 AMESIM 仿真平台建立液压系统模型，探索在不同伺服增益参数时系统的动态误差。仿真结果显示，只通过改变伺服增益，系统不能满足实际精度要求。为此，本文在控制系统中采用 PD 控制算法，借助 AMEsim 中的遗传算法进行优化，得到最优 Kp 和 Kd 参数。结果表明，此方法能使系统实现所需精度及稳定性要求。%This paper took the wave compdded the transfer function for the its Critical hydraulic components, establish-ing the transfer function of electro hydraulic servo control system.Then we established the Hydraulic system model using AMESIM and explored the dynamic error under different servo gain parameters. The simulation results show that the system cannot meet the actual accuracy requirements through changing the servo gain only. So, we adopted PD control algorithm in the control system. By means of genetic algorithm in AMEsim optimization, the optimal Kp and Kd parameters are obtained.The result indicates that the use of PD control algorithm can make the system achieving the requirements of accur-acy and stability.