一种无传感器的恒张力控制系统设计

针对传统有张力或位置传感器的恒张力控制系统存在机械复杂、动态性能差、因配套机械引起的张力波动大等缺点,研制了一种无传感器的恒张力控制系统。建立卷径模型、张力观测模型和张力调节模型,采用数字信号处理器作为核心控制器,通过电流型矢量变频器与收卷电机构成高精度位置闭环控制系统,利用两台电机间的转速差间接实现张力控制。该控制系统具有结构简单、张力控制方便的优点。将新系统运用于无碳复写纸的分切加工工艺,实验结果表明,系统稳定可靠,具有良好的控制效果。

Design on Sensorless Constant Tension Control System

With tension or pressure sensors,the traditional constant tension control system,has many shortcomings such as complicated machinery,poor dynamic response and serious tension fluctuation caused by machines.To overcome these disadvantages,a sensorless constant tension control system is researched in this paper.The models of roll diameter,tension observation and tension regulation are established respectively and a Digital Signal Processor(DSP) is taken as core controller so that the closed loop of high preci...