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摘要：
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出口厚度控制(Automatic Gauge Control,简称AGC)系统是冷轧机AGC系统的一个组成部分,主要通过控制张力,调节辊缝以保持其恒定,属于精调AGC。轧机出口板厚很大程度上取决于该出口AGC系统的性能。论文以1676mm酸洗-冷连轧联合机为研究对象,通过分析其AGC系统的控制模型,对其出口板厚控制机理作了深入的研究,发现其出口使用的Smith-AGC系统对改善系统超调,减小滞后对厚度控制的影响都有较好的效果;但同时也发现其不稳定的局限性,并介绍了一种改进的Smith预估器,通过引入微分环节可以明显提高系统性能;因此Smith-AGC需和其它AGC系统配合使用才能更好地发挥功效。
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Exit-AGC(Automatic Gauge Control) is one part of AGC system of cold rolling mill.It is a kind of small-adjust AGC system which keeps the gauge invariable by controlling the tension between the last mill and the coiler.The thickness of the strip awfully depends on the performance of exit-AGC.The paper analyses in detail the mechanism of Smith-AGC based on the research of the control system model of 1676mm CPL/TCM Coupled.Smith-AGC strictly can improve the response curve of the system.It also decreases bad effects to the thickness control because of lag.Smith-AGC has a disadvantage-instability.A kind of improved smith-predictor can enhance system performance by introducing differential effect.Therefore,Smith-predictor has more effects with the help of other AGC system.
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作者简介：
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参考文献：
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[1][美]V.B.金兹伯格著.姜明东,王国栋,等译.高精度板带材轧制理论与实践[M].北京:冶金工业出版社,2000
[2]赵家骏,魏立群.冷轧带钢生产问答[M].北京:冶金工业出版社,2004.
[3]孙一康.带钢冷连轧计算机控制[M].北京:冶金工业出版社,2002.
[4]刘博.轧机一机架AGC控制机理研究[J].冶金设备,2003,(1):35 38.
[5]韩立强,李志宏.一种改进结构的Smith预估器及在轧机AGC中的应用[J].河北大学学报(自然科学版),2004(2):130 134.
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