Algorithm of no-pull control in the continuous mill train

2015 International Siberian Conference on Control and Communications (SIBCON) Pub Date : 2015-05-21 DOI:10.1109/SIBCON.2015.7147263

V. Khramshin, S. A. Evdokimov, A. Karandaev, Andryushin I. Yu, A. G. Shubin

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引用次数: 16

Abstract

The paper provides results of analysis of tensions in the inter-stand gaps of the continuous sub-train of the 2,000 mm mill roughing train of OJSC Magnitogorsk Iron and Steel Works. It shows that the existing system of automated no-pull control does not fulfil modern requirements. Reasons of the roll product dimensional accuracy reduction at the gauge diversification have been defined. The main reason is presence of uncontrolled longitudinal forces in the strip between tandem stands. The study offers the algorithm of electric drive speed mode control based on the calculation of the static load moments for modes of the separate and simultaneous rolling. According to the algorithm, electric drive speed control is performed based on the results of comparing the calculated moments with the set reference values. Results of experimental studies of this algorithm at 2,000 mm mill are provided. Improvement of the tension control accuracy by the factor of 2-2.5 has been proved. The paper emphasizes advantages of the commercial introduction of the developed algorithm and lists main technical effects.

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连轧机组无拉控制算法

本文提供了OJSC马格尼托格尔斯克钢铁厂2000毫米轧机粗轧连续分列机架间隙张力分析结果。这表明现有的自动无拉控制系统已不能满足现代要求。明确了轧辊产品尺寸精度在规格多样化时降低的原因。主要原因是存在不受控制的纵向力的条带之间的串联机架。研究提出了基于静载荷矩计算的分轧和同轧两种模式的电驱动速度模式控制算法。根据该算法，将计算得到的力矩与设定的参考值进行比较，进行电驱动转速控制。给出了该算法在2000mm轧机上的实验研究结果。结果表明，张力控制精度提高2-2.5倍。文中着重介绍了所开发算法的商业推广优势，并列举了主要的技术效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 International Siberian Conference on Control and Communications (SIBCON)

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