800MN巨型模锻液压机基于仿人智能控制方法的纠偏策略研究

A Correcting Strategy for a Mega-800MN Forging Hydraulic Press Based on a Humanoid Intelligent Controller

在分析巨型液压机模型基础上,针对其纠偏系统存在参数摄动,不确定性偏载扰动较大的特点,提出了采用仿人智能控制方法进行控制,并针对某巨型压机进行了仿人智能控制器设计,为了验证控制策略的有效性,采用对极限工况进行数字仿真实验,实验结果表明:纠偏时间可大副缩短(偏载稳定情况下可缩短达1.5 s)动态偏转角峰值明显减小(可缩小达50%),并能够在偏载大小和方向都连续变化的情况下保持系统稳定,从而验证了该策略的可行性。

By analyzing the large hydraulic machine model which has such characteristics as the existence of parameter perturbation in the correction system and a large uncertainty eccentric load disturbance, a humanoid intel- ligent control method is presented, and a humanoid intelligent controller is designed for a giant press. In order to verify the effectiveness of the control strategy, a digital simulation experiment for extreme working conditions was carried out. Results show that the correction time can be significantly shortened：when eccentric load is stable, the adjust time can be decreased to 1.5 second ; the maximum deflection angle can be reduced by about 50 percents; and it has the capability to maintain system stability when the size and direction of bias are continuously changing.