基于多PLC通信与前馈控制的圆盘剪故障消除方法  

Fault Elimination Method of Disc Shear Based on Multi-PLC Communication and Feedforward Control

作　　者：许红兵 彭辉[2] 刘凡 许润国 XU Hongbing;PENG Hui;LIU Fan;XU Runguo(Jinvi Copper Branch of Tongling Nonferrous Metals Group Co.,Ltd.,Tongling 244002,China;School of Automation,Central South University,Changsha 410083,China;Tongling Ruilai Technology Co.,Ltd.,Tongling 244021,China;Qiongtai Normal University,Haikou 570203,China)

机构地区：[1]铜陵有色金属集团股份有限公司金威铜业分公司,安徽铜陵244002 [2]中南大学自动化学院,湖南长沙410083 [3]铜陵瑞莱科技有限公司,安徽铜陵244021 [4]琼台师范学院,海南海口570203

出　　处：《机械制造与自动化》2023年第4期225-228,共4页Machine Building & Automation

摘　　要：针对剪切线机组中圆盘剪机架打不开的故障进行机械、液压、电气解耦分析,是刀轴膨胀滞后和圆盘剪电机动作不协调导致键与槽的错位所造成。对于控制系统中原来的2个独立PLC,放弃传统的搭建通信模块方式,采用搭建中间继电器的方式建立信息交流,并将其连锁信号作为圆盘剪和其他电机等建立速度和张力的必要条件。通过设置延迟动作时间及采用前馈控制方式,以补偿液压响应的滞后时间并替代传统液压系统的优化调整,解决了该机械故障,提高了生产效率。Hydraulic and electrical decoupling is analizedregarding the failure in opening the disc shear frame in shear line unit.It is found that the dislocation of the key and slot is caused by the expansion lag of the cutter shaft and the uncoordinated action of the disc shear motor.For the original two independent multi-PLC in the control system,the traditional way of building communication modules is abandoned,and the way of building intermediate relays is adopted to establish information exchange,and its interlocking signal is used as a necessary condition for establishing speed and tension for disc shears and other motors.By setting the delay action time and adopting the feedforward control mode,the lag time of hydraulic response is compensatedand the optimization and adjustment of the traditional hydraulic system is replaced,which solves mechanical faultand improves productivity.

关 键 词：机械错位 解耦 双PLC通信 连锁 膨胀响应滞后 前馈控制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]