基于PID+前馈的3 MN径向锻造机控制系统的研究

Research and development of the control system based on PID closed-loop control plus feedforward for 3 MN radial-direction hydraulic forging machine

本文介绍了3 MN径向液压锻造机的系统组成及其控制技术点,针对3 MN径向液压锻造机的控制研究方向,提出了由工业控制计算机和PLC以及运动逻辑控制器之间组成的TCP/IP网络结构;针对其控制上的快速性、平稳性和高精度的要求,设计了一种PID+前馈的控制系统,实现了四锤头同步锻造时平稳、无冲击和准确的位置控制。

The components and the control logics of the 3 MN radial-direction hydraulic forging machine were introduced in this paper.According to the research on how to automatically control the 3 MN hydraulic forging machine,the TCP/IP network structure consisting of an industrial control computer,PLC and it’s motion logic controller were developed.To achieve the requirements including rapidity,smoothness and high precision,the control system composed of PID and feedforward were designed to ensure four hammers forging stably,smoothly and positioning precisely at the same time.