东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (3): 46-51.DOI: 10.12068/j.issn.1005-3026.2025.20230289

• 材料与冶金 • 上一篇    下一篇

时空约束的变厚度控制模型及应用

孙涛, 纪良鑫(), 杨先理, 胡贤磊   

  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
  • 收稿日期:2023-10-13 出版日期:2025-03-15 发布日期:2025-05-29
  • 通讯作者: 纪良鑫
  • 作者简介:孙 涛(1978—),男,山东淄博人,东北大学副教授.
  • 基金资助:
    国家自然科学基金资助项目(52374381);辽宁省自然科学基金资助项目(2020-MS-079)

Time and Space Constrained Variable Gauge Control Model and Application

Tao SUN, Liang-xin JI(), Xian-li YANG, Xian-lei HU   

  1. State Key Laboratory Rolling and Automation,Northeastern University,Shenyang 110819,China.
  • Received:2023-10-13 Online:2025-03-15 Published:2025-05-29
  • Contact: Liang-xin JI

摘要:

在冷轧差厚板(TRB)带材轧制过程中,厚度呈现出周期性、连续性和多段变化的特点,针对厚度难以精确控制的问题,提出密集采点、逐点调控的厚度控制策略.为防止控制系统产生振荡,提出了基于时间和空间约束的变厚度控制(VGC)模型,成功在变厚度冷轧机控制系统中实现应用.通过现场实测数据分析,使用变厚度控制模型前,等厚区厚度波动相对稳定,过渡区的厚度偏差较大,趋厚轧制时呈正偏差,趋薄轧制时呈负偏差.使用变厚度控制模型后,能够快速有效地调整过渡区的厚度偏差,确保TRB的厚度偏差在±0.025 mm以内,优于现有汽车行业TRB标准.

关键词: 差厚板, 变厚度控制, 自动厚度控制, 轻量化, 冷轧

Abstract:

During the rolling process of tailor rolled blank(TRB) cold-rolled strips, the gauge exhibits characteristics of periodic, continuous, and multi-stage variations. To address the difficulty in achieving precise gauge control, a control strategy of dense sampling and point by point regulation is proposed. To prevent oscillation in the control system, a variable gauge control(VGC) model based on time and space constraints is developed and successfully implemented in the control system of a variable gauge cold rolling mill. On-site data analysis shows that prior to the use of VGC model, the gauge fluctuations in the equal gauge zone are relatively stable, while the transitional zones exhibited significant gauge deviations, with positive deviations during upwards rolling and negative deviations during downwards rolling. After using VGC model, the system demonstrates rapid and effective adjustment capabilities for gauge deviations in the transitional zones, ensuring that the gauge deviations of TRB are within ±0.025 mm, better than the existing TRB standards in the automotive industry.

Key words: tailor rolled blank, variable gauge control, automatic gauge control, lightweight, cold rolling

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