关键词: 卷绕系统 张力控制 张力观测器 无传感器反馈控制

Abstract:

This paper takes the winding tension system as a research object and builds its dynamic mathematical model. After a detailed analysis of the conventio nal feedback control scheme with tension sensors,we propose an observer-based new scheme. Based on the dynamic torque balance equations of rollers, this scheme uses the former motor control and veloci- ty signals to estimate the on-line tension and uses its value as feedback,and then achieves sensor-less feedback control. Finally, the simulation results are compared between the two schemes. The results indicate that the proposed scheme not only reaches  the same dynamic performance as the classical feedback control does, but also owns a higher steadiness precision,which fully shows the proposed algorit hm is feasible.

Key words: winding system, tension control, observer, sensor-less feedback control