冷连轧过程控制轧制力模型综合参数自适应

轧制力模型是冷连轧过程控制系统的基本模型,影响其预报精度的主要因素是材料的变形抗力和摩擦因数. 本文采用参数自适应方法来提高轧制力的预报精度. 在对轧制力模型进行自适应过程中,将材料的变形抗力作为轧制过程模型的整体属性,各机架根据累计变形程度确定各自的变形抗力. 在此基础上,将摩擦因数看成是各机架的单体属性,各机架取不同的模型参数. 实践证明,这种综合考虑变形抗力和摩擦因数的参数自适应方法可以对二个参数同时进行修正,能有效提高轧制力模型的预报精度.

Comprehensive parameters self-adapting for a rolling force model of tandem cold rolling process control

The rolling force model is a foundation model of the process control system of a tandem cold rolling mill.Deformation resistance and friction factor have important effect on the prediction precision of rolling force.A parameter self-adaptive method was used to improve the prediction precision.During self-adapting process for the rolling force model,deformation resistance was regarded as the common property of each stand,and each stand decides its deformation resistance according to its absolute deformation grade.On this condition,friction factor was regarded as the special property of each stand,and different coefficients were given to the mathematical model for friction factor of each stand.This self-adaptive method can correct deformation resistance and friction factor at the same time.It is proved to be useful to improve the prediction precision of rolling force by practice.