原纸卷加速转矩对恒张力控制的影响  

Influence of Accelerative Torque of Paper Reel on Constant Tension Control System

作　　者：李天利[1] 孟彦京[1] 

机构地区：[1]陕西科技大学,陕西西安710021

出　　处：《中国造纸》2008年第8期56-58,共3页China Pulp & Paper

摘　　要：在基于电机转矩控制的方案中,重点分析了原纸卷加速转矩和转动惯量的影响,指出由于原纸卷的转动惯量是渐变的,因此尽管纸幅负载在车速不变时是恒功率负载,但是电机的电磁制动功率却不应该是恒定的,因此退纸辊电机的调速过程并不是恒功率调速。同时,文中给出了原纸卷加速转矩和转动惯量的计算公式以及相应的离散化方程。在此基础上,还对补偿前后纸幅实际张力的差别作出了比较。In the scheme based on motor torque control, the influence of the moment of inertia and the accelerative torque of the paper reel which is reeled out in rewinder is discussed emphatically. Because of the paper reel＇s moment of inertia changes gradually during the rewinding process, so the motor＇s power must be changed in order to make the paper＇s tension invariable. So when calculating the limit of the torque, we should consider to compensate it with the moment and accelerative torque of the paper. The function of the torque limit is presented in this paper, and the approximate equation is also presented. Based on this the fore-and-aft actual web tension is compared.

关 键 词：纸幅张力 转动惯量 加速转矩 恒张力 

分 类 号：TS736[轻工技术与工程—制浆造纸工程]