EP0424709A2 - Procédé pour compenser des défauts causés par des excentricités de cylindres - Google Patents

Procédé pour compenser des défauts causés par des excentricités de cylindres Download PDF

Info

Publication number: EP0424709A2
Authority: EP; European Patent Office
Prior art keywords: signal; rolling force; interference signal; controller; transfer function
Prior art date: 1989-10-25
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP90119151A

Other languages

German (de)

English (en)

Other versions

EP0424709B1 (fr

EP0424709A3 (en

Inventor

Hermann Wolters

Siegfried Latzel

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

SMS Siemag AG

Original Assignee

SMS Schloemann Siemag AG

Schloemann Siemag AG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1989-10-25

Filing date

1990-10-05

Publication date

1991-05-02

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6392117&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0424709(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1990-10-05 Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG

1991-05-02 Publication of EP0424709A2 publication Critical patent/EP0424709A2/fr

1992-12-02 Publication of EP0424709A3 publication Critical patent/EP0424709A3/de

1996-09-18 Application granted granted Critical

1996-09-18 Publication of EP0424709B1 publication Critical patent/EP0424709B1/fr

2010-10-05 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/66—Roll eccentricity compensation systems

Definitions

the invention relates to a method for regulating the thickness of rolled strip and for compensating for disturbances caused by roller eccentricities according to the preamble of claim 1 and a device for carrying out this method.
EP-PS 0170016 includes a method for compensating for the influence of roller eccentricities in the prior art, according to which an interference signal is filtered out from the actual value of the rolling force, the roller pitch and the stand spring constant with the aid of the backup roller speed and emulated by oscillators.
the simulated interference signal is used to control the thickness controller for the roll stand.
the causes of eccentricities lie in grinding inaccuracies of the rolls, non-uniform wear, pressure fluctuations in the bearings of the rolls, thermally induced eccentricities and others. All of these disturbances can occur on each roller of the stand and are superimposed, so that very complex disturbance signal profiles result which can only be simulated to some extent exactly with considerable expenditure on oscillators.
the rollers used have different diameters and are therefore operated at different speeds, so that a filter controlled by the backup roller speed cannot be set optimally for all rollers. This means that eccentricities cannot be compensated for adequately even with this method.
the invention is based on the object of demonstrating a method for regulating the thickness of rolled strip and for compensating for roller eccentricities, with which complex roller eccentricities resulting from superimposition of several interfering influences can be exactly compensated for.
the invention lies further the object of further developing a device for performing the method for roller eccentricity compensation.
a roll stand 1 is shown schematically.
the rolling stand 1 has a sensor 2 for the actual rolling force F i and a sensor 3 for the actual position S i .
the roll stand 1 is followed by a pick-up 4 for the actual strip thickness h i of the strip that is running out.
the scaffolding module M is represented by a spring.
a thickness control system is assigned to the roll stand 1, which consists of a monitor control circuit 5, a gauge control circuit 6 and a position control circuit 7.
a roller eccentricity compensation control loop 8 is provided.
the nominal thickness h s of the strip can be entered via an input unit E.
the compensation circuit 8 has an A / D converter 9 at the input and a D / A converter 10 at the output.
a non-linear filter 11 is coupled to the A / D converter 9.
the A / D converter 9 continues to operate on a negator 12 which is connected to an adder 13.
the output of the filter 11 is also connected to the adder 13.
the output of the adder 13 is coupled to an identification element 14, which in turn works on a computing element 15 for calculating controller parameters.
the outputs of the circuit 15 and the adder 13 are connected to a controller 16.
the output of the controller 16 is routed via the limiter 18 and the filter 19 on the one hand to the identification element 14 and on the other hand to the D / A converter 10.
the function of the compensation control loop 8 is described below.
the compensation control circuit 8 requires the rolling force signal F i as input signals and the position setting value S AGC formed by the gaugemeter circuit 6. This only requires signals that are already available for conventional thickness control, so that additional transducers, for example for the speed, etc., are not necessary.
the analog rolling force actual signal F i is digitized in the A / D converter 9 and applied to the filter 11.
the filter 11 is a non-linear low-pass filter. In order to smooth the actual rolling force signal well, ie to separate the higher-frequency interference signal, but at the same time to be able to react quickly to changes in the amplitude of the input signal, the filter 11 is controlled by the position default value S AGC , the dynamic behavior of the position control loop 7 being taken into account at the same time.
the rolling force signal at the filter output is shown in the ad dierer 13 added to the actual rolling force signal F i negated in the negator 12.
the interference signal F s caused by the roller eccentricities is thus present at the output of the adder 13.
the dynamic behavior of the interference signal F s is identified in the identification element 14, ie the Z transfer function of the interference signal F s is determined.
the unknown parameters a 1-m , b 1-n are estimated using a recursive parameter estimation method.
the parameters of the controller 16 are calculated in the computing element 15 as a function of the interference signal transfer function (1) determined and with the aid of a controller synthesis method.
the controller 16 is thus adapted to the current interference signal behavior, and compensation signals S k are generated taking into account the desired control loop behavior and the determined interference signal F s . So that the amplitudes of the compensation signal S n are not too great If the thickness of the rolled strip could be adversely affected and switched to the position control loop 7, the compensation signal S k in the limiter 18 is limited to definable maximum amplitudes. To calm the controller output, the compensation signal S k can be smoothed with a filter 19. After D / A conversion, the compensation signal S k at the position set value S AGC de s Gaugemeternikes 6 is added. The compensation signal S k is fed back to the identification circuit 14 at the same time.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Control Of Metal Rolling (AREA)
Rolls And Other Rotary Bodies (AREA)
Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Spinning Or Twisting Of Yarns (AREA)
Coating With Molten Metal (AREA)

EP90119151A 1989-10-25 1990-10-05 Procédé pour compenser des défauts causés par des excentricités de cylindres Expired - Lifetime EP0424709B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3935434A DE3935434A1 (de)	1989-10-25	1989-10-25	Verfahren zur kompensation von durch walzenexzentrizitaeten verursachten stoerungen
DE3935434		1989-10-25

Publications (3)

Publication Number	Publication Date
EP0424709A2 true EP0424709A2 (fr)	1991-05-02
EP0424709A3 EP0424709A3 (en)	1992-12-02
EP0424709B1 EP0424709B1 (fr)	1996-09-18

Family

ID=6392117

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90119151A Expired - Lifetime EP0424709B1 (fr)	1989-10-25	1990-10-05	Procédé pour compenser des défauts causés par des excentricités de cylindres

Country Status (5)

Country	Link
US (1)	US5077997A (fr)
EP (1)	EP0424709B1 (fr)
JP (1)	JP2877937B2 (fr)
AT (1)	ATE142915T1 (fr)
DE (2)	DE3935434A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0684090A1 (fr) *	1994-03-29	1995-11-29	Siemens Aktiengesellschaft	Procédé pour la suppression d'influence d'excentricité de cylindre sur le réglage d'épaisseur de matières à laminer dans une cage de laminoir
WO1998024567A1 (fr) *	1996-12-04	1998-06-11	Voest-Alpine Industrieanlagenbau Gmbh	Procede pour la compensation de l'excentricite des cylindres d'appui et/ou de travail dans une cage de laminoir duo ou quarto
EP0992295A3 (fr) *	1998-10-08	2002-12-18	Voest Alpine Industrieanlagenbau Gmbh	Procédé et dispositif pour la compensation active de perturbations périodiques pendant le laminage à chaud ou à froid
EP4613393A1 (fr)	2024-03-06	2025-09-10	Primetals Technologies Germany GmbH	Cage de laminoir avec compensation complète d'excentricités

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4231615A1 (de) *	1992-09-22	1994-03-24	Siemens Ag	Verfahren zum Unterdrücken des Einflusses von Walzenexzentrizitäten auf die Regelung der Walzgutdicke in einem Walzgerüst
DE4410960B4 (de) *	1994-03-29	2005-03-03	Siemens Ag	Verfahren zur Unterdrückung des Einflusses von Walzenexzentrizitäten
DE19652769A1 (de)	1996-12-18	1998-06-25	Voith Sulzer Papiermasch Gmbh	Verfahren und Vorrichtung zur Dämpfung von Kontaktschwingungen
US5961899A (en) *	1997-07-15	1999-10-05	Lord Corporation	Vibration control apparatus and method for calender rolls and the like
JP2000288614A (ja)	1999-04-09	2000-10-17	Toshiba Corp	圧延機の板厚制御装置
JP4227497B2 (ja) *	2003-10-15	2009-02-18	株式会社日立製作所	圧延機のフィードフォワード板厚制御装置及びその制御方法
DE102006008574A1 (de) *	2006-02-22	2007-08-30	Siemens Ag	Verfahren zur Unterdrückung des Einflusses von Walzenexzentrizitäten
WO2007148864A1 (fr) *	2007-01-17	2007-12-27	Taegutec Ltd.	Laminoir et rouleau associé
DE102007003243A1 (de)	2007-01-23	2008-07-31	Siemens Ag	Regelanordnung für ein Walzgerüst und hiermit korrespondierende Gegenstände
DE102009060826A1 (de) *	2009-12-29	2011-06-30	SMS Siemag AG, 40237	Regelung der Seitenführung eines Metallbandes
DE102009060823A1 (de) *	2009-12-29	2011-06-30	SMS Siemag AG, 40237	Regelung von Seitenführungen eines Metallbandes
CN104815848B (zh) *	2014-12-19	2017-03-29	中冶南方（武汉）自动化有限公司	基于厚度检测信号及自适应神经网络的轧辊偏心控制方法
CN113083907B (zh) *	2021-03-29	2022-07-19	广西北港不锈钢有限公司	一种不锈钢板材偏心轧制线计算方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5536004B2 (fr) *	1975-02-12	1980-09-18
US4222254A (en) *	1979-03-12	1980-09-16	Aluminum Company Of America	Gauge control using estimate of roll eccentricity
JPS5992113A (ja) *	1982-11-15	1984-05-28	Nisshin Steel Co Ltd	ロ−ル偏心制御装置
WO1985000998A1 (fr) *	1983-09-08	1985-03-14	John Lysaght (Australia) Limited	Regulateur d'epaisseur de bande pour un laminoir
EP0170016B1 (fr) *	1984-07-05	1988-12-07	Siemens Aktiengesellschaft	Méthode pour compenser l'influence de l'excentricité de rouleaux de laminage
US4648257A (en) *	1985-08-30	1987-03-10	Aluminum Company Of America	Rolling mill eccentricity compensation using actual measurement of exit sheet thickness
CA1284681C (fr) *	1986-07-09	1991-06-04	Alcan International Limited	Methode et dispositif pour detecter et corriger le desaxement des cylindres de laminoirs
DE58906215D1 (de) *	1989-07-10	1993-12-23	Siemens Ag	Verfahren und Einrichtung zur Elimination des Einflusses von periodischen Störgrössen mit bekannter, veränderlicher Frequenz.

1989
- 1989-10-25 DE DE3935434A patent/DE3935434A1/de not_active Withdrawn
1990
- 1990-10-05 EP EP90119151A patent/EP0424709B1/fr not_active Expired - Lifetime
- 1990-10-05 AT AT90119151T patent/ATE142915T1/de not_active IP Right Cessation
- 1990-10-05 DE DE59010507T patent/DE59010507D1/de not_active Expired - Lifetime
- 1990-10-11 JP JP2270639A patent/JP2877937B2/ja not_active Expired - Lifetime
- 1990-10-25 US US07/603,475 patent/US5077997A/en not_active Expired - Lifetime

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0684090A1 (fr) *	1994-03-29	1995-11-29	Siemens Aktiengesellschaft	Procédé pour la suppression d'influence d'excentricité de cylindre sur le réglage d'épaisseur de matières à laminer dans une cage de laminoir
US5647238A (en) *	1994-03-29	1997-07-15	Siemens Aktiengesellschaft	Method for suppressing the influence of roll eccentricities on a control for a rolling-stock thickness in a roll stand
WO1998024567A1 (fr) *	1996-12-04	1998-06-11	Voest-Alpine Industrieanlagenbau Gmbh	Procede pour la compensation de l'excentricite des cylindres d'appui et/ou de travail dans une cage de laminoir duo ou quarto
EP0992295A3 (fr) *	1998-10-08	2002-12-18	Voest Alpine Industrieanlagenbau Gmbh	Procédé et dispositif pour la compensation active de perturbations périodiques pendant le laminage à chaud ou à froid
EP4613393A1 (fr)	2024-03-06	2025-09-10	Primetals Technologies Germany GmbH	Cage de laminoir avec compensation complète d'excentricités
WO2025186051A1 (fr)	2024-03-06	2025-09-12	Primetals Technologies Germany Gmbh	Support de rouleau à compensation complète d'excentricités

Also Published As

Publication number	Publication date
JPH03156615A (ja)	1991-07-04
DE3935434A1 (de)	1991-05-02
EP0424709B1 (fr)	1996-09-18
US5077997A (en)	1992-01-07
EP0424709A3 (en)	1992-12-02
JP2877937B2 (ja)	1999-04-05
DE59010507D1 (de)	1996-10-24
ATE142915T1 (de)	1996-10-15

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Publication	Publication Date	Title
EP0424709B1 (fr)	1996-09-18	Procédé pour compenser des défauts causés par des excentricités de cylindres
DE69027292T2 (de)	1997-01-23	Verfahren und System zur digitalen Signalverarbeitung.
DE69607168T2 (de)	2000-07-13	Verfahren zur sensorfehlererkennung
EP0170016B1 (fr)	1988-12-07	Méthode pour compenser l'influence de l'excentricité de rouleaux de laminage
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EP0155301B1 (fr)	1989-09-20	Regulateur d'epaisseur de bande pour un laminoir
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DE4410960B4 (de)	2005-03-03	Verfahren zur Unterdrückung des Einflusses von Walzenexzentrizitäten
EP0698427B1 (fr)	1997-12-03	Procédé pour supprimer l'influence des excentricités de rouleaux de laminage
AT407015B (de)	2000-11-27	Verfahren zur kompensation der exzentrizität der stütz- und/oder arbeitswalzen in einem duo- oder quarto-walzgerüst
DE69917169T2 (de)	2005-07-07	Verfahren und Vorrichtung zur aktiven Kompensation periodischer Störungen beim Warm- oder Kaltwalzen
EP3940342B1 (fr)	2022-08-31	Appareil de mesure
DE4411313C2 (de)	1998-01-15	Verfahren zur Ausfilterung des Exzentrizitätseinflusses beim Walzen
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