目的 研究动态补偿复卷机升降速过程中张力变化行为。方法 采用间接控制方式，对动态过程进行分析，对复卷机升降速过程采用动态力矩补偿的方法，实现高效运行。结果 2个被控电机的电流随补偿动态力矩同步变化，即运行速度同步变化，纸幅张力在复卷机升降速过程中始终保持恒定。结论 通过Matlab仿真实验，复卷机两被控电机速度同步性明显增强，纸幅张力恒定。

The work aims to study dynamic compensation for tension change in speeding up or down process of rewinder. The dynamic process was analyzed by indirect control method. Dynamic torque compensation method was applied in the speeding up or down process of the rewinder to realize efficient operation. Current of two controlled motors changed synchronously with the changes of dynamic torque compensation, namely the running speed changed synchronously and the paper tension remained constant in the process of speeding up or down. In conclusion, by Matlab simulation experiment, the two controlled motors witness evidently intensified speed synchronism while their paper tension keeps constant.