Co-ordinated control of profile and shape in hot strip finishing mills with nonlinear dynamics

Author

Bulut, B. ; Katebi, M R ; Grimble, M.J.

Author_Institution

Ind. Control Centre, Strathclyde Univ., Glasgow, UK

Volume

149

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

471

Lastpage

480

Abstract

A method of modelling and controlling profile and flatness in hot strip tandem rolling mills is described. The method for controlling the profile is based on explicit manipulation of the strip thickness across its width. The flatness is controlled by appropriately distributing and constraining the profile actuators, so that defects do not occur. Model-based predictive control is employed to generate the control signal for each stand and to co-ordinate the stands for optimal profile and shape control. Simulation results are presented to demonstrate the performance of the proposed co-ordinated control scheme.

Keywords

control system synthesis; distributed control; nonlinear control systems; optimal control; predictive control; rolling mills; shape control; co-ordinated control scheme; control signal generation; distributed actuators; explicit strip thickness manipulation; flatness control; hot strip finishing mills; hot strip tandem rolling mills; model-based predictive control; nonlinear dynamics; open-loop control schemes; optimal profile control; profile actuators; profile control; shape control;

fLanguage

English

Journal_Title

Control Theory and Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2379

Type

jour

DOI

10.1049/ip-cta:20020671

Filename

1048976