EP 1624982 B2 20110615 - METHOD FOR REGULATING THE TEMPERATURE OF A METAL STRIP, ESPECIALLY FOR ROLLING A METAL HOT STRIP IN A FINISHING TRAIN
Title (en)
METHOD FOR REGULATING THE TEMPERATURE OF A METAL STRIP, ESPECIALLY FOR ROLLING A METAL HOT STRIP IN A FINISHING TRAIN
Title (de)
VERFAHREN ZUR REGELUNG DER TEMPERATUR EINES METALLBANDES, INSBESONDERE IN EINER FERTIGSTRASSE ZUM WALZEN VON METALLWARMBAND
Title (fr)
PROCEDE DE REGULATION DE LA TEMPERATURE D'UNE BANDE METALLIQUE, EN PARTICULIER DANS UN TRAIN FINISSEUR POUR LE LAMINAGE A CHAUD DE BANDES METALLIQUES
Publication
Application
Priority
- EP 2004001366 W 20040213
- DE 10308222 A 20030225
- DE 10321791 A 20030514
Abstract (en)
[origin: US7310981B2] The invention relates to a method for controlling and regulating the temperature of a metal strip in a finishing train 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 optimization with auxiliary conditions and are regulated and controlled online by solving a quadratic optimization problem with linear auxiliary conditions, preferably with the aid of an active set strategy.
IPC 8 full level
B21B 37/74 (2006.01)
CPC (source: EP US)
B21B 37/74 (2013.01 - EP US); C21D 11/00 (2013.01 - EP US); C21D 11/005 (2013.01 - EP US)
Citation (opposition)
Opponent :
- DE 10064267 A1 20020704 - ALSTOM SWITZERLAND LTD [CH]
- EP 1231010 A1 20020814 - SIEMENS WESTINGHOUSE POWER [US]
- US 4274273 A 19810623 - FAPIANO DONALD J, et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004076086 A2 20040910; WO 2004076086 A3 20041118; AT E360483 T1 20070515; DE 502004003617 D1 20070606; EP 1624982 A2 20060215; EP 1624982 B1 20070425; EP 1624982 B2 20110615; JP 2006518670 A 20060817; NO 20054156 L 20050907; US 2006156773 A1 20060720; US 7310981 B2 20071225
DOCDB simple family (application)
EP 2004001366 W 20040213; AT 04710836 T 20040213; DE 502004003617 T 20040213; EP 04710836 A 20040213; JP 2006501837 A 20040213; NO 20054156 A 20050907; US 54578105 A 20050816