EP2285506B1 - Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage - Google Patents
Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage Download PDFInfo
- Publication number
- EP2285506B1 EP2285506B1 EP09765681.3A EP09765681A EP2285506B1 EP 2285506 B1 EP2285506 B1 EP 2285506B1 EP 09765681 A EP09765681 A EP 09765681A EP 2285506 B1 EP2285506 B1 EP 2285506B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- manipulated variable
- roller
- hydraulic valve
- actuating element
- Prior art date
- 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.)
- Active
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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
- B21B37/007—Control for preventing or reducing vibration, chatter or chatter marks
Definitions
- the present invention relates to a method and a device for suppressing vibrations in a rolling mill.
- the invention relates to a method for suppressing vibrations, in particular 3-octave oscillations, in a rolling mill with at least one roll stand with roll adjustment and at least one set of rolls, wherein at least one permanently measured size of the rolling mill fed to a controller, with the aid of this controller in real time determined time-variable manipulated variable and the controlled variables are kept substantially at defined setpoints by the action of at least one actuator of the roller adjustment.
- EP 1457274 A2 discloses a method and apparatus for avoiding 3rd and 5th octave vibrations in a rolling stand.
- at least one roller of a set of rollers is acted upon by means of a control circuit and an actuator, whereby the controlled variables are kept at defined setpoints.
- concrete embodiments or selection criteria for the actuator can not be taken from the disclosure.
- the object of the invention is to provide a method and a hydraulic roller adjustment having device for suppressing vibrations in a rolling mill with which in particular 3-octave oscillations effectively suppressed and thereby the quality of the rolling stock and / or the productivity of the rolling mill can be improved ,
- a method of the type mentioned in which the manipulated variable is fed to an electro-hydraulic actuator and at least one hydraulic actuator of the roller adjustment is acted upon by this actuator, wherein the electro-hydraulic actuator has a nominal flow rate ⁇ 50 l / min and at least part of the frequency response at frequencies f ⁇ 80 Hz is characterized by a magnitude decrease ⁇ 3 dB and in this frequency range, the phase drop ⁇ the conditions f ⁇ 19 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 and ⁇ ⁇ 90 ° is sufficient.
- the inventive method can be performed when at least part of the frequency response of the electro-hydraulic actuator at frequencies f ⁇ 80 Hz, preferably 200 ⁇ f ⁇ 80 Hz, characterized by a magnitude decrease ⁇ 3 dB and in this frequency range of Phase loss ⁇ the conditions f ⁇ 19 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 . prefers f ⁇ 23 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 . particularly preferred f ⁇ 27 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 . and ⁇ ⁇ 90 ° is sufficient.
- the method according to the invention can be carried out advantageously if the acceleration in the setting direction, a hydraulic pressure or the setting force of a hydraulic actuator of the roller setting is used as a permanently measured variable.
- Occurring vibrations are advantageously detected particularly quickly or suppressed in a particularly rapid manner when a permanently measured variable with a sampling time ⁇ 1 ms, preferably ⁇ 0.2 ms, a controller is supplied.
- a further advantageous embodiment of the method is that the difference of the accelerations between the value on the piston rod and the value on the cylinder housing of a hydraulic actuator of the roller adjustment is used as a permanently measured variable.
- a permanently measured variable is filtered by means of one or more bandpass filters, preferably by bandpass filters higher than the second order.
- the controller determines the manipulated variable, taking into account a mathematical control law and a submodel, which characterizes the system state or the system behavior and preferably contains a hydraulic and / or mechanical and / or rolling force model.
- the manipulated variable of the controller for suppressing vibrations of another manipulated variable, such as a roll gap control, additively superimposed and optionally supplied to a electro-hydraulic actuator after a phase change and / or a non-linear compensation.
- the efficiency of the method according to the invention can be further increased if the supply pressure and / or the control pressure and / or the tank pressure at the electro-hydraulic actuator is stabilized by means of hydraulic accumulators.
- the response time of the actuator is shortened or achieved a uniform response of the actuator largely independent of transient pressure fluctuations.
- the electro-hydraulic actuator has a nominal flow rate ⁇ 100 l / min, preferably ⁇ 200 l / min. This makes it possible to provide with an actuator and high flow rates for controlling one or more actuators of the roller adjustment. As noted above, the nominal flow rate is determined at a pressure drop of 70 bar.
- the size of the electrohydraulic actuator is selected via the inequality Q Nominal ⁇ 1592 * V Zyl , wherein the cylinder volume in m 3 is to be used in this numerical equation and the nominal volume flow Q Nenn results in l / min.
- an electrically controlled hydraulic valve to which the manipulated variable can be fed, and at least one hydraulic cylinder of the roller adjustment, on the at least one roller of the set of rollers can be acted upon are present, wherein the hydraulic valve has a rated flow ⁇ 50 l / min and at least part of the frequency response at frequencies f ⁇ 80 Hz has a magnitude decrease ⁇ 3 dB and in this frequency range, the phase drop ⁇ the conditions f ⁇ 19 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 and ⁇ ⁇ 90 ° is sufficient.
- the device for suppressing vibrations is executed when at least part of the frequency response of the hydraulic valve at frequencies ⁇ 80 Hz, preferably 200 ⁇ f ⁇ 80 Hz, a Amount drop ⁇ 3 dB and in this frequency range, the phase drop ⁇ the conditions f ⁇ 19 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 . prefers f ⁇ 23 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 . particularly preferred f ⁇ 27 ⁇ ⁇ 3 + 3 . 1 ⁇ 10 - 6 ⁇ ⁇ 4 . and ⁇ ⁇ 90 ° is sufficient.
- a measuring device is designed as an acceleration, pressure or force sensor.
- the measuring devices are connected to the digital controller, for example, via cable or fieldbus.
- An advantageous measuring device can be achieved if a measuring device has two acceleration sensors, wherein a sensor with the piston rod and a sensor with the cylinder housing of a hydraulic cylinder of the roller adjustment is connected. It is advantageous that the measuring axis of an acceleration sensor is arranged parallel to the Anstellides a hydraulic cylinder of the roll adjustment.
- a further improvement of the dynamic properties of the device according to the invention can be achieved if a supply line and / or a control line and / or a tank line to the hydraulic valve has a hydraulic accumulator for pressure stabilization.
- the hydraulic valve has a nominal flow rate ⁇ 100 l / min, preferably ⁇ 200 l / min.
- the electrohydraulic actuator has a nominal flow rate of Q nominal ⁇ 1592 * V cyl , again using the cylinder volume V Zyl in m 3 and the nominal flow Q nominal in l / min.
- Particularly advantageous dynamic properties of the device can be achieved if a hydraulic valve with a hydraulic cylinder of the roll adjustment forms an assembly or the hydraulic valve is in the immediate vicinity of the hydraulic cylinder.
- Fig. 1 shows the basic structure of a controlled system for the suppression of vibrations.
- a measured variable 2 Via an acceleration sensor 1, which is in communication with a roll of a roll stand 12, a measured variable 2 is fed to a bandpass filter 3, which is designed as a fourth order bandpass, which corresponds to the frequency component of the measured variable relevant for chatter oscillations, ie. of the acceleration signal, a controller 4 feeds.
- This controller 4 comprising a control algorithm and the plant state characterizing partial models, calculated in real time, taking into account the filtered measured variable 2 and a target size 5 at least one variable-time manipulated variable 6, which is a lead / lag member 7 and subsequently fed to a non-linear compensation element 8 ,
- a lead / lag member 7 By a lead / lag member 7, the phase of a signal, in the specific case of the Manipulated variable 6, to be changed.
- Such a change in the phase position is therefore particularly advantageous because it is possible to assume a substantially constant chatter frequency in a particular rolling mill, and it is possible to make targeted use of this knowledge to increase the power of the vibration suppression.
- the resulting volumetric flow 10 is subsequently fed to at least one actuator designed as a hydraulic cylinder 11, which in turn exerts forces on a roller of the roller set.
- This makes it possible, first, to selectively extract energy from a disturbance variable 13 and, secondly, to selectively influence the attenuation of the overall system. Both measures have an advantageous effect on the suppression of third octave oscillations and cause thereby the quality of the rolling stock and / or the production capacity of the rolling mill can be increased.
- a rolling mill 12 of a rolling mill is shown.
- a controller 4 is connected to a designed as a servo valve hydraulic valve 9.
- a hydraulic cylinder 11 which is in communication with the hydraulic valve 9, a roll of the roll adjustment is applied, wherein in addition to the adjusting movement of the roller and the impingement to avoid vibrations.
- position signals 14, pressure signals 15 and acceleration signals 16 of an acceleration pickup 1 are indicated.
- Fig. 3 is the inventive phase drop of an electro-hydraulic hydraulic valve specified.
- the frequency f is shown in Hz
- the phase drop ⁇ in ° The frequency range has been cut off for clarity at 350 Hz.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Vibration Prevention Devices (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0097908A AT506398B1 (de) | 2008-06-18 | 2008-06-18 | Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage |
PCT/EP2009/055526 WO2009153101A1 (de) | 2008-06-18 | 2009-05-07 | Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2285506A1 EP2285506A1 (de) | 2011-02-23 |
EP2285506B1 true EP2285506B1 (de) | 2013-07-03 |
Family
ID=41057735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09765681.3A Active EP2285506B1 (de) | 2008-06-18 | 2009-05-07 | Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage |
Country Status (8)
Country | Link |
---|---|
US (1) | US8695391B2 (zh) |
EP (1) | EP2285506B1 (zh) |
CN (1) | CN102083560B (zh) |
AT (1) | AT506398B1 (zh) |
BR (1) | BRPI0915724B1 (zh) |
MX (1) | MX2010013754A (zh) |
RU (1) | RU2503512C2 (zh) |
WO (1) | WO2009153101A1 (zh) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT507088B1 (de) * | 2008-12-05 | 2010-02-15 | Siemens Vai Metals Tech Gmbh | Verfahren und vorrichtung zur aktiven unterdrückung von druckschwingungen in einem hydrauliksystem |
AT507087B1 (de) * | 2008-12-05 | 2010-02-15 | Siemens Vai Metals Tech Gmbh | Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem |
ITMI20120476A1 (it) * | 2012-03-26 | 2013-09-27 | Danieli Off Mecc | Sistema di smorzamento di vibrazioni mediante un sistema di attuazione idraulico |
ITMI20132170A1 (it) * | 2013-12-20 | 2015-06-21 | Danieli Off Mecc | Sistema di smorzamento attivo di vibrazioni di un laminatoio |
KR20180117732A (ko) * | 2014-07-15 | 2018-10-29 | 노벨리스 인크. | 자려 1/3 옥타브 밀 진동의 댐핑 프로세스 |
EP3171995B1 (en) * | 2014-07-25 | 2018-07-11 | Novelis Inc. | Rolling mill third octave chatter control by process damping |
DE102015223516A1 (de) * | 2015-09-23 | 2017-03-23 | Sms Group Gmbh | Walzgerüst, Walzlanlage und Verfahren zum aktiven Dämpfen von Schwingungen in einem Walzgerüst |
CN107983781B (zh) * | 2016-10-26 | 2019-10-25 | 宝山钢铁股份有限公司 | 抑制轧机三倍频振动方法 |
CN114160583B (zh) * | 2021-11-29 | 2023-10-20 | 太原理工大学 | 一种轧机垂直振动的伺服阻尼器 |
CN116550767B (zh) * | 2023-07-10 | 2023-09-22 | 太原理工大学 | 一种抑制极薄带轧制过程中张力波动的半自动调节装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU655448A1 (ru) | 1976-10-25 | 1979-04-05 | Fajnberg Marat Yu | Способ управлени электродвигателем посто нного тока при ударной нагрузке |
SU671891A1 (ru) | 1977-04-04 | 1979-07-05 | Предприятие П/Я М-5973 | Электропривод нажимного устройства прокатного стана |
JPS60118313A (ja) | 1983-11-30 | 1985-06-25 | Kawasaki Steel Corp | 圧延機の板厚制御方法 |
JPH09267110A (ja) | 1995-12-28 | 1997-10-14 | Nkk Corp | 圧延機の振動防止装置 |
JP4416213B2 (ja) * | 1998-08-06 | 2010-02-17 | フォイト ズルツァー パピーアテヒニク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 回転中のロールの不都合な振動を能動的に弱めるための装置及び方法 |
AUPQ120999A0 (en) * | 1999-06-25 | 1999-07-22 | Industrial Automation Services Pty Ltd | Vibration suppressing piston |
US7155951B2 (en) * | 2000-12-20 | 2007-01-02 | Novelis, Inc. | Mill variation control apparatus and method |
FI113794B (fi) * | 2002-11-14 | 2004-06-15 | Metso Paper Inc | Menetelmä ja järjestely pitkänomaisen telavälineen paikan ja/tai voiman säätämiseksi |
RU2239501C2 (ru) | 2002-12-31 | 2004-11-10 | Открытое акционерное общество "Северсталь" | Способ определения критических вибраций на станах прокатки полосы |
AT500766B1 (de) | 2003-03-10 | 2008-06-15 | Voest Alpine Ind Anlagen | Verfahren und vorrichtung zur vermeidung von schwingungen |
FR2869819B1 (fr) | 2004-05-07 | 2006-08-04 | Vai Clecim Soc Par Actions Sim | Procede et dispositif d'amortissement d'une cage de laminoir |
AT502723B1 (de) | 2004-07-07 | 2008-08-15 | Voest Alpine Ind Anlagen | Verfahren und vorrichtung zur reduktion von schwingungen in einem steckelwalzwerk |
CN100441328C (zh) * | 2006-01-25 | 2008-12-10 | 冶金自动化研究设计院 | 一种抑制轧机传动系统动态速降和扭振的控制系统 |
-
2008
- 2008-06-18 AT AT0097908A patent/AT506398B1/de not_active IP Right Cessation
-
2009
- 2009-05-07 MX MX2010013754A patent/MX2010013754A/es active IP Right Grant
- 2009-05-07 WO PCT/EP2009/055526 patent/WO2009153101A1/de active Application Filing
- 2009-05-07 EP EP09765681.3A patent/EP2285506B1/de active Active
- 2009-05-07 RU RU2011101570/02A patent/RU2503512C2/ru active
- 2009-05-07 BR BRPI0915724A patent/BRPI0915724B1/pt active IP Right Grant
- 2009-05-07 US US12/999,365 patent/US8695391B2/en active Active
- 2009-05-07 CN CN200980122983.3A patent/CN102083560B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
RU2503512C2 (ru) | 2014-01-10 |
US20110120202A1 (en) | 2011-05-26 |
CN102083560A (zh) | 2011-06-01 |
MX2010013754A (es) | 2011-01-21 |
US8695391B2 (en) | 2014-04-15 |
AT506398A4 (de) | 2009-09-15 |
CN102083560B (zh) | 2014-01-08 |
BRPI0915724B1 (pt) | 2020-05-05 |
AT506398B1 (de) | 2009-09-15 |
BRPI0915724A2 (pt) | 2015-10-27 |
WO2009153101A1 (de) | 2009-12-23 |
EP2285506A1 (de) | 2011-02-23 |
RU2011101570A (ru) | 2012-07-27 |
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