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.416 北京科技大学学报 第29卷 能提高预报精度,但依然有较大误差,在变形抗力 [2]周富强,曹建国,张杰,等.冷连轧轧制力在线计算模型.北 自适应的基础上,进一步对摩擦因数进行修正,得到 京科技大学学报,2006,28(9):859 [3]李伟明,穆志纯,刘克、基于实测值的自适应算法在中厚板轧 的轧制力最大相对误差为4.7%. 制中的应用.北京科技大学学报,2003,25(1):6 摩擦因数模型是在有限几种工艺条件下回归得 [4]Wang JS.Jiang Z Y,Tieu A K,et al.Adaptive calculation of 到的,在不同的工艺条件下,回归结果存在一定的误 deformation resistance model of online process control in tandem 差,因此对不同情况,轧制力的预报精度会有差异, cold mill.J Mater Process Technol.2005.162:585 但较原轧制力模型有较大提高 [5]Larkiola J.Myllykoski P.Nylander J.et al.Prediction of rolling 产生误差的原因可能是轧辊压扁半径计算不 force in cold rolling by using physical models and neural comput- ing.J Mater Process Technol,1996.60:381 准,以及没有考虑轧件的弹性恢复, [6]朱光明,杜风山,孙等月,等.2030板带冷连轧系统在线控制 4结论 模型接触摩擦应力分布,钢铁,2003,38(12):30 [7]Sun J L.Kang Y L.Xiao T G.et al.Lubrication in strip cold 将材料的强度和强度增量作为材料的原始属 rolling process.J Univ Sci Technol Beijing.2004.11(4):368 性,五个机架根据累计变形程度不同确定各自的变 [8]王伟,连家创,采用混合摩藤模型预报冷轧薄板轧制力,钢铁 研究学报,2000,12(1):10 形抗力,而将摩擦因数看成是各机架的单体属性, [9]时旭,刘向华,王国栋.薄板轧制的接触摩擦及其对轧制力的影 各机架取不同的模型参数,实验证明,这种综合考 响.塑性工程学报,2005,12(3):31 虑变形抗力和摩擦因数的参数自适应方法可以提高 [10]王军生,赵启林,矫志杰,等.冷连轧过程控制变形抗力模 轧制力模型的预报精度, 型的自适应学习、东北大学学报:自然科学版,2004,25 (10):973 参考文献 [11]华建新,王贞祥.全连续式冷连轧过程控制.北京:冶金工业 出版社,2000:70 [1]赵志业。金属塑性变形与轧制理论,北京:冶金工业出版社, 1991.45 Comprehensive parameters self-adapting for a rolling force model of tandem cold rolling process control GUO Liwei,YANG Quan),GUO Lei2) 1)National Engineering Research Center for Advanced Rolling Technology.University of Science and Technology Beijing,Beijing 100083,China 2)Wuhan STARTS Science and Technology Development Co.Ltd.,Wuhan 430080.China ABSTRACI The rolling force model is a foundation model of the process control system of a tandem cold rolling mill.Deformation resistance and friction factor have important effect on the prediction precision of rolling force.A parameter self-adaptive method was used to improve the prediction precision.During self-adapting pro- cess for the rolling force model,deformation resistance was regarded as the common property of each stand,and each stand decides its deformation resistance according to its absolute deformation grade.On this condition,fric- tion factor was regarded as the special property of each stand,and different coefficients were given to the mathe- matical model for friction factor of each stand.This self-adaptive method can correct deformation resistance and friction factor at the same time.It is proved to be useful to improve the prediction precision of rolling force by practice. KEY WORDS tandem cold rolling:process control:rolling force;mathematical model;self-adapting能提高预报精度‚但依然有较大误差.在变形抗力 自适应的基础上‚进一步对摩擦因数进行修正‚得到 的轧制力最大相对误差为4∙7%. 摩擦因数模型是在有限几种工艺条件下回归得 到的‚在不同的工艺条件下‚回归结果存在一定的误 差.因此对不同情况‚轧制力的预报精度会有差异‚ 但较原轧制力模型有较大提高. 产生误差的原因可能是轧辊压扁半径计算不 准‚以及没有考虑轧件的弹性恢复. 4 结论 将材料的强度和强度增量作为材料的原始属 性‚五个机架根据累计变形程度不同确定各自的变 形抗力.而将摩擦因数看成是各机架的单体属性‚ 各机架取不同的模型参数.实验证明‚这种综合考 虑变形抗力和摩擦因数的参数自适应方法可以提高 轧制力模型的预报精度. 参 考 文 献 [1] 赵志业.金属塑性变形与轧制理论.北京:冶金工业出版社‚ 1991:45 [2] 周富强‚曹建国‚张杰‚等.冷连轧轧制力在线计算模型.北 京科技大学学报‚2006‚28(9):859 [3] 李伟明‚穆志纯‚刘克.基于实测值的自适应算法在中厚板轧 制中的应用.北京科技大学学报‚2003‚25(1):6 [4] Wang J S‚Jiang Z Y‚Tieu A K‚et al.Adaptive calculation of deformation resistance model of online process control in tandem cold mill.J Mater Process Technol‚2005‚162:585 [5] Larkiola J‚Myllykoski P‚Nylander J‚et al.Prediction of rolling force in cold rolling by using physical models and neural comput￾ing.J Mater Process Technol‚1996‚60:381 [6] 朱光明‚杜凤山‚孙等月‚等.2030板带冷连轧系统在线控制 模型接触摩擦应力分布.钢铁‚2003‚38(12):30 [7] Sun J L‚Kang Y L‚Xiao T G‚et al.Lubrication in strip cold rolling process.J Univ Sci Technol Beijing‚2004‚11(4):368 [8] 王伟‚连家创.采用混合摩擦模型预报冷轧薄板轧制力.钢铁 研究学报‚2000‚12(1):10 [9] 时旭‚刘向华‚王国栋.薄板轧制的接触摩擦及其对轧制力的影 响.塑性工程学报‚2005‚12(3):31 [10] 王军生‚赵启林‚矫志杰‚等.冷连轧过程控制变形抗力模 型的自适应学习.东北大学学报:自然科学版‚2004‚25 (10):973 [11] 华建新‚王贞祥.全连续式冷连轧过程控制.北京:冶金工业 出版社‚2000:70 Comprehensive parameters self-adapting for a rolling force model of tandem cold rolling process control GUO L iwei 1)‚Y A NG Quan 1)‚GUO Lei 2) 1) National Engineering Research Center for Advanced Rolling Technology‚University of Science and Technology Beijing‚Beijing100083‚China 2) Wuhan STARTS Science and Technology Development Co.Ltd.‚Wuhan430080‚China ABSTRACT The rolling force model is a foundation model of the process control system of a tandem cold rolling mill.Deformation resistance and friction factor have important effect on the prediction precision of rolling force.A parameter self-adaptive method was used to improve the prediction precision.During self-adapting pro￾cess for the rolling force model‚deformation resistance was regarded as the common property of each stand‚and each stand decides its deformation resistance according to its absolute deformation grade.On this condition‚fric￾tion factor was regarded as the special property of each stand‚and different coefficients were given to the mathe￾matical model for friction factor of each stand.This self-adaptive method can correct deformation resistance and friction factor at the same time.It is proved to be useful to improve the prediction precision of rolling force by practice. KEY WORDS tandem cold rolling;process control;rolling force;mathematical model;self-adapting ·416· 北 京 科 技 大 学 学 报 第29卷
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