多因素下热轧精轧机组监控AGC控制策略  

AGC control strategy for monitoring hot rolling and precision rolling units under multiple factors

作　　者：周忠勋 郭强[2] 王伟 张飞[2] 郭志强 ZHOU Zhongxun;GUO Qiang;WANG Wei;ZHANG Fei;GUO Zhiqiang(Engineering Technology Research Institute of University of Science and Technology Beijing,Beijing 100083,China;National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing,University of Science and Technology Beijing,Beijing 102206,China;Design and Research Institute Co.,Ltd.,University of Science and Technology Beijing,Beijing 102206,China)

机构地区：[1]北京科技大学工程技术研究院,北京100083 [2]北京科技大学高效轧制与智能制造国家工程研究中心,北京102206 [3]北京科技大学设计研究院有限公司,北京102206

出　　处：《冶金自动化》2025年第1期88-93,116,共7页Metallurgical Industry Automation

基　　金：国家重点研发计划重点专项(2022YFB3304002-02)。

摘　　要：热轧自动厚度控制(automatic gauge control, AGC)系统中多采用压力AGC和监控AGC结合控制,在预设定偏差较大情况下,监控AGC由于调节快速性及自身滞后性特点,容易造成末机架辊缝调节幅度过大造成起浪现象。基于实际轧制工艺条件,弯辊控制、活套控制多因素下,提出一种基于多因素下的监控AGC控制方法。根据各机架相对压下率、弯辊力调节上下限、活套角度自适应区间、变监控比例调节范围以及监控AGC滞后偏差,构建精轧机组监控AGC控制方法。实际应用表明,该监控AGC控制策略取得了预期效果,带钢头部轧制快速性、稳定性增加,可以有效提高带钢整体厚度命中率。In the automatic gauge control(AGC)system for hot rolling,a combination of pressure AGC and monitoring AGC is often used for control.In the case of a large preset deviation,monitoring AGC is prone to causing excessive adjustment amplitude of the final stand roll gap due to its fast adjustment and hysteresis characteristics,resulting in wave phenomenon.Based on actual rolling process conditions,a monitoring AGC control method based on multiple factors such as bending roll control and loop control was proposed.Based on the relative reduction rate of each stand,upper and lower limits of bending roll force adjustment,adaptive range of loop angle,variable monitoring proportion adjustment range,and monitoring AGC hysteresis deviation,a monitoring AGC control method for precision rolling units was constructed.Practical applications have shown that the monitoring AGC control strategy has achieved the expected results,increasing the speed and stability of strip head rolling,and effectively improving the overall thickness hit rate of the strip.

关 键 词：热轧 监控AGC 厚度控制 厚度精度 稳定轧制 

分 类 号：TG3[金属学及工艺—金属压力加工]