冷连轧轧制力计算模型及改进方案

来源期刊：冶金自动化2011年第4期

论文作者：王飞

文章页码：69 - 71

关键词：冷连轧； 过程控制系统； 轧制力计算模型； 自学习

Key words：tandem cold rolling； process control system； rolling force calculation model； self-learning function

摘    要：过程控制系统要求数学模型能正确反映规律性,运算简单,并且有较高的预报精度。轧制力计算模型是过程控制数学模型的核心,轧制力的计算精度直接影响到板形与板厚控制的精度。为了提高轧制力计算的精度,通过对冷轧轧制力特点的分析和计算模型的研究,我们在现有Hill公式的基础上,考虑张力对计算冷轧带钢轧制力的影响并借助于自学习计算功能,通过添加张力影响因子和模型自学习系数对Hill公式进行了改进,在保证轧制力预报精度的同时实现轧制力的在线计算。实际数据测试结果表明轧制力在线计算模型的预报精度误差在±5%以内。

Abstract: Process control system for cold rolling requires the applied mathematics models being precise description of rolling laws,simpler in computation,and predictive with favorable accuracy.Rolling force calculation model is the core of the rolling process control models and its accuracy directly affects the shape and gauge control performance.In order to improve the calculation accuracy of rolling force model,analysis of the characteristics of rolling force and the investigation on the rolling force calculation model in tandem cold strip mill are carried out and a modified Hill model,associated with tension effect and self-learning coefficient,is proposed as online control model for the cold rolling process.Practical results show that the prediction error of the online model is less than ±5%.