基于轧机弹跳特征曲线的热连轧精轧宽度控制策略研究
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摘要
针对基于弹跳方程的轧制力宽度控制(RF-AWC)不能满足实际生产需求的问题,结合RF-AWC的控制原理和实际应用情况,提出一种采用轧机弹跳特征曲线方程进行宽度计算的新型RF-AWC。利用新型RFAWC对带钢宽度偏差进行调节,可以有效避免轧机刚度系数对弹跳方程的影响,从根本上解决了RF-AWC宽度计算的问题。针对卷取机建张造成的带钢头部缩颈问题,提出自适应缩颈补偿(NEC)策略,提高带钢头部宽度控制精度。现场应用效果表明,本文提出的宽度控制策略取得了良好的控制效果。
Aimed at the problem that traditional roll force automatic width control( RF-AWC) system based on spring equation cannot meet the requirements of practical production,a novel RF-AWC system,combining with the control method and application status of it,uses mill stretch characteristic curve which could effectively eliminate the influence of mill stiffness is proposed. And the neck compensation( NEC) system is developed to eliminate the necking phenomenon. The width control system has been applied successfully in a hot strip mill,and the results show that the control precision is improved significantly.
Aimed at the problem that traditional roll force automatic width control( RF-AWC) system based on spring equation cannot meet the requirements of practical production,a novel RF-AWC system,combining with the control method and application status of it,uses mill stretch characteristic curve which could effectively eliminate the influence of mill stiffness is proposed. And the neck compensation( NEC) system is developed to eliminate the necking phenomenon. The width control system has been applied successfully in a hot strip mill,and the results show that the control precision is improved significantly.
引文
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[9]丁敬国,焦景民,昝培,等.基于模糊聚类的PSO-神经网络预测热连轧粗轧宽度[J].东北大学学报:自然科学版,2007,28(9):1282.
[10]SUN Jian-liang,PENG Yan,LIU Hong-min.Dynamic characteristics of cold rolling mill and strip based on flatness and thickness control in rolling process[J].Journal of Central South University,2014,21(2):567.
[11]Calvo-Rolle JoséLuis,Casteleiro-Roca JoséLuis,Quintián Héctor,et al.A hybrid intelligent system for PID controller using in a steel rolling process[J].Expert Systems with Applications,2013,40(1):5188.
[12]JI Ya-feng,ZHANG Dian-hua,CHEN Shu-zong,et al.Algorithm design and application of novel GM-AGC based on mill stretch characteristic curve[J].Journal of Central South University,2014(21):942.
[13]孙一康.冷热轧板带轧机的模型与控制[M].北京:冶金工业出版社,2010.
[2]HONG W K,KIM P H,MOON Y H,et al.Hot strip width control method by using looper tension measuring system in finishing mill[J].Journal of Materials Processing Technology,2001,111(1):74.
[3]ZOU Jun,FU Xin,YANG Hua-yong.Active disturbance rejection control for hydraulic width control system for rough mill[J].Journal of Zhejiang University Science A,2007,8(9):1429.
[4]王四海,包建华,于晓波,等.减小热轧中宽带钢宽度偏差的措施[J].轧钢,2011,28(3):54.
[5]刘恩洋,彭文,李旭,等.全连续粗轧机控制系统的开发与应用[J].冶金自动化,2015,39(6):45.
[6]田野,胡贤磊,刘相华,等.热轧带钢头尾短行程控制自学习策略[J].钢铁研究学报,2010,22(4):55.
[7]PARK Cheol Jae,HWANG I Cheol.Width control systems with roll force automatic width control and finishing vertical mill automatic width control in hot strip mill[J].Journal of Materials Processing Technology,2008,206(1):143.
[8]刘文斌,康永林,崔伦凯,等.迁钢2250mm热轧短行程控制模型参数优化[J].轧钢,2010,27(1):51.
[9]丁敬国,焦景民,昝培,等.基于模糊聚类的PSO-神经网络预测热连轧粗轧宽度[J].东北大学学报:自然科学版,2007,28(9):1282.
[10]SUN Jian-liang,PENG Yan,LIU Hong-min.Dynamic characteristics of cold rolling mill and strip based on flatness and thickness control in rolling process[J].Journal of Central South University,2014,21(2):567.
[11]Calvo-Rolle JoséLuis,Casteleiro-Roca JoséLuis,Quintián Héctor,et al.A hybrid intelligent system for PID controller using in a steel rolling process[J].Expert Systems with Applications,2013,40(1):5188.
[12]JI Ya-feng,ZHANG Dian-hua,CHEN Shu-zong,et al.Algorithm design and application of novel GM-AGC based on mill stretch characteristic curve[J].Journal of Central South University,2014(21):942.
[13]孙一康.冷热轧板带轧机的模型与控制[M].北京:冶金工业出版社,2010.