摘要
本文以一类卷绕系统的收卷过程为研究对象,建立了其动态数学模型,提出了一种基于张力观测器的新型控制方案。笔者根据辊的动态转矩平衡方程式,利用系统原有的电机控制和速度检测信号,将观测的张力值作为反馈,构成张力闭环,从而实现无传感器反馈控制。最后,对这种方案进行了仿真。结果表明,本文提出的方案完全可以达到常规方案的动态性能,具有较高的稳态精度。这充分说明了该算法是可行的。
This paper takes the winding tension system as a research object and builds its dynamic mathematical model. After a detailed analysis of the conventional 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 algorithm is feasible.
出处
《计算机工程与科学》
CSCD
2008年第4期135-138,共4页
Computer Engineering & Science
