以80 MN等温煤炭机械锻造液压机为研究对象,从煤炭机械锻造液压机的工作原理和控制精度要求出发,结合电液控制技术,采用PLC与PID闭环控制相结合的方法,研制了一种具有高可靠性和可维护性的锻造液压机控制系统,完成了对液压机的锻造速度和4个液压缸同步的控制。对液压机的各项参数做了测试,并给出了实际系统运行中采集的实验数据和相关曲线,实验表明,速度误差控制在5%之内,且动态响应好,同步精度满足系统要求。 With 80 MN isothermal coal mechanical forging hydraulic press as the research object, starting from the working principle and control precision requirements of coal mechanical forging hydraulic press, combined with the electro-hydraulic control technology, the PLC and PID closed-loop control are combined to develop a high reliable Forging hydraulic machine control system of sexual and maintainability, completed for the hydraulic machine forging speed and 4 hydraulic cylinder synchronization control. The parameters of the hydraulic press were tested and the experimental data and correlation curves collected during actual system operation were given. Experiments show that the speed error is controlled within 5% and the dynamic response is good, and the synchronization accuracy meets the system requirements.