基于离散辅助闭环的轧辊偏心补偿法

中国机械工程 ›› 2014, Vol. 25 ›› Issue (13): 1807-1811.

基于离散辅助闭环的轧辊偏心补偿法

杨阳1;王益群1,2;陈刚1,2

1.燕山大学,秦皇岛,066004
2.国家冷轧板带装备及工艺工程技术研究中心,秦皇岛,066004

出版日期:2014-07-10 发布日期:2014-07-16
基金资助:
河北省自然科学基金资助项目(E2010001163, E2009000405)

Roll Eccentricity Compensation Method Based on Discrete Assistant Closed-loop System

Yang Yang1;Wang Yiqun1,2;Chen Gang1,2

1.Yanshan University,Qinhuangdao,Hebei,066004
2.National Engineering Research Center for Equipment and Technology of Cold Rolling Strip,Qinhuangdao,Hebei,066004

Online:2014-07-10 Published:2014-07-16
Supported by:
Hebei Provincial Natural Science Foundation of China（No. E2010001163, E2009000405）

摘要/Abstract

摘要：

利用闭环控制原理,构建了一个辅助的闭环系统,提出了基于离散辅助闭环的轧辊偏心补偿法。在进行轧辊偏心补偿时,根据计算或检测得到的相位，通过从离散存取矩阵中读取对应的偏心补偿量进行补偿；根据控制期望值、实际输出值及原偏心补偿量对厚度的补偿影响量计算出补偿偏差，经辅助闭环控制器计算出修正偏心补偿量,并用修正偏心补偿量代替离散存取矩阵中对应相位处的原偏心补偿量，实现对偏心补偿量的滚动优化，从而改善补偿效果,提高补偿精度。通过在生产的轧机上分别使用常规偏心补偿法和基于离散辅助闭环的轧辊偏心补偿法在相同工况下厚控效果的对比，验证了基于离散辅助闭环的轧辊偏心补偿法比常规偏心补偿法更为有效、可靠。

关键词: 扰动控制, 辅助闭环, 偏心补偿, 离散存取矩阵

Abstract:

An assistant closed-loop system was constructed for the compensation of roll eccentricity based on closed-loop control theory. In this system, the value of compensation could be obtained from discrete access matrix according to the phase detected or calculated. The compensation deviation, which was calculated by expected value, output value and influence compensation value of former compensation value, revised eccentricity compensation by the assistant closed-loop controller and the former compensation value in discrete access matrix. The assistant closed-loop system realizes rolling optimization, and improves the accuracy of thickness.Conventional eccentricity compensation method and eccentricity compensation method based on discrete assistant closed-loop system were used in strip mill respectively. According to the control effects under the same conditions, eccentricity compensation method based on discrete assistant closed-loop system is more effective and reliable than conventional eccentricity compensation method.

Key words: disturbance control, assistant closed-loop, eccentricity compensation, discrete access matrix

中图分类号:

TG331

杨阳, 王益群, 陈刚, . 基于离散辅助闭环的轧辊偏心补偿法[J]. 中国机械工程, 2014, 25(13): 1807-1811.

Yang Yang, Wang Yiqun, Chen Gang, . Roll Eccentricity Compensation Method Based on Discrete Assistant Closed-loop System[J]. China Mechanical Engineering, 2014, 25(13): 1807-1811.

参考文献

[1]王益群,杨阳,陈刚.冷带轧机板厚自动控制系统[J].重型机械,2011(4):50-53.
Wang Yiqun,Yang Yang,Chen Gang.Automatic Gauge Control System of Cold Rolling[J].Heavy Machinery，2011(4): 50-53.
[2]Cheng Chicheng,Hsu Lanyuan,Hsu Yuanliang,et al.Simulation and Analysis of Feedforward Automatic Gauge Control for a Hot Strip Finishing Mill[J].Advanced Materials Research,2011,230/231/232:471-475.
[3]Huang Min,Fang Xiaoke,Wang Jianhui,et al.Roll Eccentricity Compensation Control for Strip Rolling Mills Based on Wavelet Packet De-noising Theory[C]//Proceedings of the 5th World Congress on Intelligent Control and Automation. Beijing, 2004:3565-3569.
[4]王益群,刘涛,姜万录,等.冷连轧机工作辊温度场分析及膨胀量预报[J].中国机械工程,2006,17(5):496-500.
Wang Yiqun,Liu Tao,Jiang Wanlu,et al.Roller Temperature Field Analysis & Thermal Expansion Prediction For of Tandem Cold Rolling Mill[J].China Mechanical Engineering,2006,17(5):496-500.
[5]王哲英,王可,孙兴伟.基于微分进化的MFFT轧辊偏心诊断技术[J].中国机械工程,2010,21(2):169-174.
Wang Zheying,Wang Ke,Sun Xingwei.Prognosis System for Roll Eccentricity with MFFT Based on the Difference Evolution Algorithm[J]. China Mechanical Engineering,2010,21(2):169-174.
[6]侯媛彬,杜京义,高赟.改进小脑模型网络对轧辊偏心谐波的分频辨识[J].中国机械工程,2007,18(8):938-941.
Hou Yuanbin,Du Jingyi,Gao Yun.A Identification Method of Separated Frequency for Roller Eccentricity Harmonic by Improved Network of Cerebellar Model Articulation Controller[J].China Mechanical Engineering,2007,18(8):938-941.
[7]Visitvattanakul P,Sricharoenchai P,Fujita F.Simulation of Effect of Roll Eccentricity on Rolled Material Thickness[J]. SEAISI Quarterly,2003,32(1):14-20.
[8]王益群,孔祥东.控制工程基础[M].1版.北京:机械工业出版社,2001.
[9]李勇.板带轧机轧辊偏心控制的研究[D].沈阳:东北大学,2008.