双边剪同步运行控制方法

Synchronously Running Control Method for Four Machines of Double-Side Shear

主要叙述了宝钢厚板厂精整区域双边剪(四个主电机)电气同步控制设计方案和应用,在剪切线,双边剪主要对钢板边部进行剪切,利用夹送辊步进式输送,执行连续全自动剪切。四个主电机的同步控制是通过四个单独的逆变器实现的,而逆变器的实现是通过SIMOLINK。PLC发送控制脉冲信号给每个逆变器,根据剪切工艺来决定电机运行状态。

This paper mainly presents the asynchronous running control design and application for multiple electrical machines in steel industry production by an example-the double-side shear that includes four machines.In the steel producing line,the double-side shear has the task of trimming the plate fed to it by the pinch roll units on both length sides and chopping the edge scrap thus produced with the aid of the scrap shear.It performs this task in continuous operation.Four asynchronous motors are synchronously controlled by four separate inverters whose connections are realized by SIMOLINK(Siemens Motion Link) software.All control impulse signals are transferred to every inverter by PLC(Programmable Logic Controller) with less than 0.001s error.The shearing technology parameters for steel plate directly also influence the motor running status.