Rolling force correction method and device

Abstract

The invention discloses a rolling force correction method and device. The correction method comprises the steps that the rolling force set deviation of current strip steel in the current period is obtained; according to the iterative calculation results of the rolling force setting deviation at different times, N current correction coefficients are obtained, and N is an integer not smaller than 2; according to specification information of a to-be-rolled steel coil, a set correction coefficient is determined in the N current correction coefficients; and according to the set correction coefficient, the preset rolling force of the to-be-rolled steel coil is corrected. According to the correction method, learning of different change rules of the rolling force is taken into consideration, in a multi-variety small-batch production mode, capturing of the field production rule of frequent specification changing production is more perfect, then the preset precision of the rolling force is improved, and a basic premise is created for improving the production stability of the cold-rolled strip steel and achieving high-precision rolling.

Description

technical field [0001] The present application relates to the technical field of rolling force control of rolling mills, in particular to a method and device for correcting rolling force. Background technique [0002] The rolling process of strip steel is a typical multi-variable, time-varying, strongly coupled and nonlinear process, and various factors interact and finally act on the deformation area of ​​the roll gap. High-precision model setting calculation is the premise and foundation of stable rolling and high-efficiency rolling, and the mathematical model of rolling process is the core of high-precision setting calculation. Due to the complexity of the rolling process, the mathematical models of the rolling process are often highly complex, and each model needs to include and reflect the influence of multiple factors on the set results. For example, the calculation of the rolling force model is a complex calculation process considering factors such as deformation res...

AI Technical Summary

Problems solved by technology

However, in practical application, the production status of the rolling mill frequently changes specifications, and the improvement of the accuracy of some influencing factors cannot always maintain the improvement of the setting accuracy of the rolling force model, and the setting accuracy is unstable or reduced.

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