Title:
METHOD FOR REGULATING THE TEMPERATURE OF A METAL STRIP, ESPECIALLY FOR ROLLING A METAL HOT STRIP IN A FINISHING TRAIN
Document Type and Number:
WIPO Patent Application WO2004076086
Kind Code:
A3
Abstract:
The invention relates to a method for controlling and regulating the temperature of a metal strip (6) in a finishing train (3) of a hot rolling mill. A target function is formed by comparing a desired temperature gradient with an actual temperature gradient. The target function measures deviations from desired indications positioned in various places on the finishing train. The speed of the strip and the flow of the cooling agent are adjusted by predicting with the aid of a method of non-linear optimisation with auxiliary conditions and are regulated and controlled online by solving a quadratic optimisation problem with linear auxiliary conditions, preferably with the aid of an active set strategy.
Inventors:
KURZ MATTHIAS (DE)
METZGER MICHAEL (DE)
METZGER MICHAEL (DE)
Application Number:
PCT/EP2004/001366
Publication Date:
November 18, 2004
Filing Date:
February 13, 2004
Export Citation:
Assignee:
SIEMENS AG (DE)
KURZ MATTHIAS (DE)
METZGER MICHAEL (DE)
KURZ MATTHIAS (DE)
METZGER MICHAEL (DE)
International Classes:
B21B37/74; (IPC1-7): B21B37/74
Foreign References:
| DE19717615A1 | 1998-10-29 | |||
| US6185970B1 | 2001-02-13 | |||
| EP1014239A1 | 2000-06-28 | |||
| US5126947A | 1992-06-30 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03 27 February 1998 (1998-02-27)
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