Ri. Stephens et A. Randall, ONLINE ADAPTIVE CENTRAL IN THE HOT-ROLLING OF STEEL, IEE proceedings. Control theory and applications, 144(1), 1997, pp. 15-24
Citations number
16
Categorie Soggetti
Controlo Theory & Cybernetics","Instument & Instrumentation","Engineering, Eletrical & Electronic","Robotics & Automatic Control
Hot rolling is a competitive business in which quality and efficiency
are of paramount importance. Methods for improving the accuracy and pr
ecision of the product can yield significant savings for the steel pro
ducer. Automatic control of the process is now widespread, and the inc
lusion of adaptive techniques to control systems has shown notable imp
rovements in meeting tightening tolerances and reducing scrap. The pap
er describes some of the techniques used for on-line identification an
d control during the hot rolling of steel. A general adaptive control
scheme is described which is applicable to the majority of rolling mil
ls, and practical guidelines for success are outlined. Two case studie
s are included: the first is the application of extended Kalman filter
ing techniques to pass-by-pass adaptation within a section mill; the s
econd is the application of similar techniques to feedforward adaptive
control of a hot strip mill finishing train.