东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (3): 343-346.DOI: 10.12068/j.issn.1005-3026.2016.03.009

• 材料与冶金 • 上一篇    下一篇

热轧带钢短行程控制自适应策略

彭文1, 马更生1, 曹剑钊2, 张殿华1   

  1. (1. 东北大学 轧制技术及连轧自动化国家重点实验室, 辽宁 沈阳110819; 2. 沈阳建筑大学 信息与控制工程学院, 辽宁 沈阳110168)
  • 收稿日期:2015-01-19 修回日期:2015-01-19 出版日期:2016-03-15 发布日期:2016-03-07
  • 通讯作者: 彭文
  • 作者简介:彭文(1987-),男,山东青州人,东北大学博士后研究人员; 张殿华(1963-),男,内蒙古赤峰人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51074051); 辽宁省博士启动基金资助项目(20131033).

Adaptive Strategy of Short Stroke Control in Tandem Hot Rolling

PENG Wen1, MA Geng-sheng1, CAO Jian-zhao2, ZHANG Dian-hua1   

  1. 1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China; 2. School of Information and Control Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
  • Received:2015-01-19 Revised:2015-01-19 Online:2016-03-15 Published:2016-03-07
  • Contact: PENG Wen
  • About author:-
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摘要: 热连轧生产过程中,短行程是控制轧件头尾宽度的重要手段. 为提高短行程的控制精度,提出了一种短行程自适应策略,以短行程关键坐标位置为优化变量并建立目标函数,使用单纯形替换法对目标函数求解,得到了最优宽度补偿曲线,进一步对短行程关键参数进行平滑处理,实现了对短行程曲线关键参数的优化过程,提高了轧件头尾的宽度控制精度. 本优化策略已成功应用于某热连轧生产线,实际生产数据表明,采用自适应优化策略之后轧件头尾与中部稳定段的宽度偏差控制在2.0mm之内达到了90%左右,提高了宽度控制精度,具有良好的实际应用效果.

关键词: 热轧, 短行程控制, 目标函数, 自适应策略, 单纯形替换法

Abstract: The SSC (short stroke control) is a key issue in the width control of the strip head end in hot tandem rolling process. In order to enhance the width precision, an SSC adaptive strategy was proposed, the objective function with the key points of the SSC curve and actual width error curve was founded, and in the process for looking for the optimal solution, the NM(Nelder-Mead) simplex algorithm was used, finally the optimized width compensation curve was received, and the SSC on-line adaptive strategy was realized with the exponential smoothing method. The adaptive strategy was successfully applied to a tandem hot mill, and the application result showed that the width deviation between the head end and the stable part can be controlled within 2.0mm, and the proportion is up to 90 %, which can meet the actual production, and has good application prospect.

Key words: hot rolling, short stroke control(SSC), objective function, adaptive strategy, simplex algorithm

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