Transactions of Materials and Heat Treatment

Title：Application of Smith-predictor in exit-AGC for cold rolling mill

Authors： ZHAO Li-juan~(1 2) XU Tao~2 LIU Jie~1(1.School of Mechanical Engineering and Automation Northeastern University Shenyang Liaoning 110004 China 2.Mechanical Engineering College Liaoning Engineering Technology University Fuxin Liaoning 123000 China)

Unit：

KeyWords： cold rolling mill automatic gauge control AGC smith-predictor

ClassificationCode：TG333

year,vol(issue):pagenumber：2005,30(6):58-61

Abstract：

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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Reference：

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