PLC和变频器在恒张力卷取机中的应用  

Application of PLC and Frequency Converter in Constant Tension Coiler

作　　者：游雷[1] 刘克福[1] 蒋代君[1] 李志成[1] 

机构地区：[1]西华大学机械工程与自动化学院,成都610039

出　　处：《机械工程师》2013年第8期119-120,共2页Mechanical Engineer

基　　金：四川省教育厅资助项目(09ZZ030/09ZA116)

摘　　要：钢带轧制过程中,为保证卷取机提供的张力恒定,提出以PLC为控制器,以张力控制专用变频器驱动收放卷电机的交流传动控制方案。并以测张辊和张力传感器检测钢带的实际张力作为反馈信号实现闭环控制,用测速辊和测速编码器检测钢带的线速度来计算卷径。文中详细介绍了可逆轧制过程恒张力控制系统的组成和原理,采用闭环转矩控制方法,实现了钢带可逆轧制过程的恒张力控制,保证了轧制产品的质量。In the process of strip rolling, in order to ensure the coiler tension constant, AC drive control scheme is put forward that PLC acts as controller, and special inverter is used to control the coiler motor. Tension measurement roller and the tension sensor are used to detect the actual tension of the steel strip, feedback signal of the actual tension is applied to achieve closed-loop control. The linear velocity of the strip detected by speed roller and speed encoder is used to calculate roll diameter. The composition and principle of the constant tension control system for reversible rolling process is described. Closed-loop torque control method can realize the constant tension control in the steel strip reversible rolling process, and ensure the quality of rolled products.

关 键 词：PLC 变频器 恒张力控制 卷取机 

分 类 号：TG334.9[金属学及工艺—金属压力加工]