Method of eliminating deflection interference signal of whole roll embedded flatness meter
WANG Dong-cheng1,2, XU Yang-huan1, YU Hua-xin1, LIU Hong-min1,2
1. National Engineering Research Center for Equipment and Technology of Cold Rolling Strip, Yanshan University, Qinhuangdao 066004, Hebei, China; 2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China
Abstract：Flatness measurement and control technology is necessary to produce high-end cold rolling strip.A series of new scientific and technological problems have been encountered during the development course of domestic flatness measurement and control system. How to eliminate the interference signal caused by the deflection of the whole roll embedded flatness meter was focused on. First of all, the structure characteristics of the whole roll embedded flatness meter and the particularity of the sensor connection type are analyzed. Then, the ideal waveform and the actual waveform characteristics of the flatness signal are analyzed, according to their characteristics, a new method of eliminating deflection interference signal is proposed. The interference signal phase is determined according to the characteristics of the fixed sensor installation position, while the interference signal amplitude is optimized with the flat waveform between the effective signals. Finally, the effectiveness of the method is verified by examples and industrial applications. The results show that the method can effectively and accurately eliminate the additional deflection waveform, make the radial pressure and flatness distribution smoother, and effectively improve the detection accuracy.
王东城, 徐扬欢, 于华鑫, 刘宏民. 整辊内嵌式板形仪挠度干扰信号的消除方法[J]. 钢铁, 2020, 55(10): 56-62.
WANG Dong-cheng, XU Yang-huan, YU Hua-xin, LIU Hong-min. Method of eliminating deflection interference signal of whole roll embedded flatness meter[J]. Iron and Steel, 2020, 55(10): 56-62.
[1] 李靖,马进峰,王飞,等. 四辊平整机板形前馈模型的研究与应用[J]. 轧钢,2019, 36(1):58.(LI Jing,MA Jin-feng,WANG Fei,et al. Development and application of flatness feedforward model for four-high skin pass mill[J]. Steel Rolling,2019,36(1):58.) [2] 王雪松,李群,王志勇,等. 首秦公司管线钢板形控制的研究与实践[J]. 中国冶金,2018,28(5):51.(WANG Xue-song,LI Qun,WANG Zhi-yong,et al. Research and application of shape control of pipeline steel in Shouqin Company[J]. China Metallurgy,2018,28(5):51.) [3] 张维召. 邯钢2 180 mm酸轧机组板形控制研究[J]. 轧钢,2018,35(1):82.(ZHANG Wei-zhao. Study on strip shape control technology of 2 180 mm picking and tandem cold mill of Hansteel[J]. Steel Rolling,2018,35(1):82.) [4] 胡建军,文杰,于孟,等. DR9镀锡板板形控制技术研究与应用[J]. 中国冶金,2018,28(6):37. (HU Jian-jun,WEN Jie,YU Meng,et al. Research and application of flatness control on DR9 tinplate[J]. China Metallurgy,2018,28(6):37.) [5] 何小丽,王崇. 冷轧机组闭环板形控制策略研究[J]. 冶金自动化,2018,42(2):44.(HE Xiao-li,WANG Chong. Study on closed-loop shape control strategy of cold colling[J]. Metallurgical Industry Automation,2018,42(2):44.) [6] 刘宏民,刘军,于丙强,等. 带钢冷轧机整辊无线式板形仪和智能板形控制系统[J]. 机械工程学报,2017,53(12):87.(LIU Hong-min,LIU Jun,YU Bing-qiang,et al. Entire roller wireless shape meter and intelligent shape control system for cold steel strip mills[J]. Journal of Mechanical Engineering,2017,53(12):87.) [7] WANG Dong-cheng,LIU Hong-min,LIU Jun. Research and development trend of shape control for cold rolling strip[J]. Chinese Journal of Mechanical Engineering,2017,30(5): 1248. [8] 刘宏民,于华鑫,杨利坡,等. 一种用于冷轧带材板形仪的紧凑无线内嵌式信号处理器:中国,CN105005287A[P]. 2015-10-28. (LIU Hong-min,YU Hua-xin,YANG Li-po,et al. A type of seamless and embedded signal processor used for shapemeter:China,CN105005287A[P]. 2015-10-28.) [9] 于华鑫,刘宏民,徐扬欢,等. 冷轧带材板形测控系统国家标准解读[J]. 钢铁,2019,54(10):52.(YU Hua-xin,LIU Hong-min,XU Yang-huan,et al. Interpretation of national standards for cold rolled strip shape detection and control system[J]. Iron and Steel,2019,54(10):52.) [10] WU Hai-miao,LIU Hong-min,YU Bing-qiang,et al. Determination of interference fit value on entire roller embedded shapemeter roll[J]. Journal of Central South University of Technology,2014,12:4503. [11] 于华鑫,王东城,刘宏民,等. 冷轧带材板形辊传动方案设计[J]. 钢铁,2019,54(7):56.(YU Hua-xin,WANG Dong-cheng,LIU Hong-min,et al. Electric drive scheme design of flatness meter for cold rolling strip[J]. Iron and Steel,2019,54(7):56.) [12] YU Hua-xin,WANG Dong-cheng,LIU Hong-min,et al. Modelling and application of signal decoupling of adjacent channels of a whole-roller seamless flatness meter[J]. ISIJ International,2020,60(5):939. [13] 于华鑫,王东城,刘宏民,等. 冷轧带材整辊式板形仪通道耦合与解耦[J]. 钢铁,2019,54(11):63.(YU Hua-xin,WANG Dong-cheng,LIU Hong-min,et al. Channel coupling and decoupling of seamless flatness meter for cold rolling strip[J]. Iron and Steel,2019,54(11):63.) [14] 何力,王京,张飞. 离散跟踪微分器在板形识别上的研究与应用[J]. 钢铁研究学报,2013,25(2):58.(HE Li,WANG Jing,ZHANG Fei. Research and application of discrete tracking differentiator in shape flatness recognition[J]. Journal of Iron and Steel Research,2013,25(2):58.) [15] 单修迎. 冷轧带钢板形控制的矩阵模型研究[D]. 秦皇岛:燕山大学,2011. (SHAN Xiu-ying. Research on Matrix Model of Shape Control for Cold Strip Mills[D]. Qinhuangdao:Yanshan University,2011.) [16] 李荣民,杨利坡,于丙强,等. 板形检测辊挠度变化对冷轧带钢原始波形信号的影响[J]. 钢铁,2013,48(5):41.(LI Rong-min,YANG Li-po,YU Bing-qiang,et al. Effect of shape detecting roll deflection on original waveform signal of cold rolling strip[J]. Iron and Steel,2013,48(5):41.) [17] 李荣民,杨利坡,于丙强,等. 检测辊安装精度对冷轧带钢在线波形信号的影响[J]. 钢铁,2013,48(7):40.(LI Rong-min,YANG Li-po,YU Bing-qiang,et al. Effect of detection roll installation precision on online shape signal of cold rolling strip[J]. Iron and Steel,2013,48(7):40.) [18] 赵章献,王东城,王鹏飞,等. 板形仪位置误差补偿模型的研究及应用[J]. 钢铁,2015,50(3):49.(ZHAO Zhang-xian,WANG Dong-cheng,WANG Peng-fei,et al. Research and application of position error compensation model for shape meter[J]. Iron and Steel,2015,50(3):49.) [19] 杨利坡,于丙强,李荣民,等. 冷轧带钢板形检测误差及异常信号补偿模型[J]. 机械工程学报,2014,50(6):30.(YANG Li-po,YU Bing-qiang,LI Rong-min,et al. Compensation model of abnormal signal and shape detection error of cold rolling strip[J]. Chinese Journal of Mechanical Engineering,2014,50(6):30.) [20] 王鹏飞,张殿华,刘佳佳,等. 冷轧板形测量值计算模型的研究与应用[J]. 机械工程学报,2011,47(4):58. (WANG Peng-fei,ZHANG Dian-hua,LIU Jia-jia,et al. Research and application of the flatness measurement calculation model on cold rolling mill[J]. Journal of Mechanical Engineering,2011,47(4):58.) [21] 徐芝纶. 弹性力学[M]. 北京:人民教育出版社,1979.(XU Zhi-lun. Elastic Mechanics [M]. Beijing:People′s Education Press,1979.)
2020, Vol. 55 
