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Huang Yanwei
Wu Tihua
Department of Automation,
Shanghai Jiaotong University,
Shanghai 200030, China
Zhao Jingyi
Wang Yiqun
College of Mechanical Engineering,
Yanshan University,
Qinhuangdao 066004, China |
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SENSITIVITY ANALYSIS FOR
ROLLING PROCESS BASED ON
SUPPORT VECTOR MACHINE*
Abstract: A method for the calculation of the sensitivity factors of the rolling process has been obtained by differentiating the roll force model based on support vector machine. It can eliminate the algebraic loop of the analytical model of the rolling process. The simulations in the first stand of five stand cold tandem rolling mill indicate that the calculation for sensitivities by this proposed method can obtain a good accuracy, and an appropriate adjustment on the control variables determined directly by the sensitivity has an excellent compensation accuracy. Moreover, the roll gap has larger effect on the exit thickness than both front tension and back tension, and it is more efficient to select the roll gap as the control variable of the thickness control system in the first stand.
Key words:
Support vector machine (SVM) Cold tandem rolling mill Modeling Sensitivity |