无张力传感器的卷绕过程V-F协调控制

A Velocity and Tension Coordinated Winding Control System without any Tension Sensors

为解决塑料薄膜等卷绕物在高速收卷过程中的速度—张力(V-F)的平稳协调控制问题,该文提出一种无需张力传感器的新型V-F协调控制方案,其执行机构为异步电动机矢量控制系统,其中,以牵引电机为主机,工作于调速方式,由其决定整机的生产速度,以收卷电机为从机,工作于力矩控制方式且其最高速度受主机速度的约束。由两轴速度信号估计卷绕物张力与收卷卷径值,采用张力软闭环控制方法,构成了适于卷径大范围变化的无张力传感器的V-F协调控制。最后介绍了基于嵌入式技术的V-F协调控制器实现技术,该系统已在塑料薄膜软包装材料加工生产中得到应用,具有良好的应用前景。

To make the velocity-tension coordinated control system in the high-speed winding process of webs such as plastic film running properly and smoothly, this paper proposes a new V-F coordination control scheme without any, tension sensonr,The winding actuator is asynchrono.us motor vector corttrol system. The pull-out motor that working in thee velocity mode is the master motor, which determines the production rate of the ma- chine. Thewinding motor that working in the torque mode is the slave motor, and its maximum velocit,L is constrained by ：the velocity iof.tlie master motor. The speed signal of two axes is used to estimate the web tension and winding diametcr. By＇using soft closed-loop tension control, the paper realizes the V-F coordination con- trol without any tension sensors fbr a large extent of winding diameter. Finally, the paper introduces the tech- nical solution of velocity-tensiorl coordinated controller based on embedded technology. Tie proposed system is aolalied in several web winding process, and has good application prospect.