EP2355941A1 - Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem - Google Patents
Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystemInfo
- Publication number
- EP2355941A1 EP2355941A1 EP09799567A EP09799567A EP2355941A1 EP 2355941 A1 EP2355941 A1 EP 2355941A1 EP 09799567 A EP09799567 A EP 09799567A EP 09799567 A EP09799567 A EP 09799567A EP 2355941 A1 EP2355941 A1 EP 2355941A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic system
- pressure
- actuator
- hydraulic
- variable
- 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.)
- Withdrawn
Links
- 230000010355 oscillation Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000006096 absorbing agent Substances 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 238000005097 cold rolling Methods 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract description 19
- 238000009434 installation Methods 0.000 abstract description 3
- 238000009530 blood pressure measurement Methods 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- 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
-
- 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
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8613—Control during or prevention of abnormal conditions the abnormal condition being oscillations
Definitions
- the present invention relates to a method and an apparatus for the semi-active reduction of pressure oscillations in a hydraulic system of a cold or hot rolling mill or a strip processing plant for iron, steel or aluminum materials.
- pressure oscillations in hydraulic systems cause various problems, for example excessive noise, reduction of the life of components, disturbance of control circuits, etc.
- Pressure oscillations can either be caused in the hydraulic system itself, e.g. caused by the non-uniformity of the delivery of pumps or by the control of valves, etc., or also externally, e.g. due to periodic load fluctuations in hydraulic cylinders or motors.
- hydraulic systems with high dynamics for example consisting of a highly dynamic continuous hydraulic valve (for example an electrically controlled proportional or servo valve) and a hydraulic cylinder or motor, strong pressure oscillations can occur in the hydraulic system.
- Damage to the frameworks of a rolling mill and / or defects in the rolling stock can lead. This is mainly due to the fact that on the one hand - due to higher rolling forces or speeds - faster and faster reacting hydraulic systems (higher dynamics) are used and on the other hand - due to higher demands on the reaction time and economy - the damping in the hydraulic systems (eg the viscous damping in the seals of cylinders) is reduced.
- a device for the active suppression of pressure oscillations in a hydraulic power unit which comprises a pressure sensor, a control device with associated amplifier and a
- Volume compensator has. Concrete regulations for the method to be performed or further indications for an advantageous application of the device in a hydraulic system of a rolling mill or strip processing plant can not be found in the disclosure.
- the object of the invention is to provide a method and a device for the semi-active reduction of pressure oscillations in a hydraulic system of a cold or hot rolling mill or a strip processing plant with which occurring pressure oscillations can be effectively reduced by means of a simple and inexpensive device
- a method of the type mentioned comprising the following method steps in the order mentioned: a) detection of a pressure signal by means of a pressure transducer by permanently measuring a pressure in the hydraulic system; b) determination of an alternating component of the pressure signal; c) determination of at least one temporally variable manipulated variable in real time with the aid of a controller below
- a pressure signal by means of a pressure transducer (eg with a piezoelectric, piezoresistive or DMS (Dehn-measuring strip) measuring cell) by permanently measuring a pressure in a hydraulic system, for example, a rolling stand of a rolling mill, detected.
- a hydraulic system is understood to mean a section (typically a hydraulic circuit or a hydraulic axis) of a hydraulic system which is hydraulically connected to one another, for example the area between a hydraulic valve and a hydraulic cylinder including the hydraulic lines or hoses.
- an alternating component is determined from the pressure signal, ie. it will be a DC component of the pressure signal removed, and fed to a controller.
- the determination of the alternating component can be carried out either by an electronic filter module or by a digital filter (eg removal of the DC component by means of a viewing window English, "sliding window", consisting of n measured values of the pressure oscillations (filter order n), of course, however, the removal of the DC component
- the determination of the alternating component can also take place by means of a piezoelectric pressure transducer and a charge amplifier which is either connected downstream of the pressure transducer or integrated in the pressure transducer variable manipulated variable in real time, which is used for
- a vibration damper means a per se passive element for vibration damping, e.g. a ⁇ / 4 resonator, a Helmholtz resonator, etc.
- the term "semi-active reduction of pressure oscillations" should be understood to mean the attenuation of an amplitude of pressure oscillations in a hydraulic system by means of a passive vibration absorber
- Natural frequency of the passive vibration absorber is variable by means of an actuator.
- a particularly strong reduction in the amplitude of the pressure oscillations is possible when a natural frequency of the vibration absorber is changed by a targeted actuation of the actuator with the manipulated variable, that the natural frequency of the vibration is brought into agreement with a frequency of the pressure oscillation.
- the transmission of the manipulated variable signal from Controller for the actuator can be wired or wireless (eg via radio).
- the alternating component of the pressure signal is subjected to bandpass filtering.
- bandpass filtering it is possible to use the alternating component either particularly disturbing frequency components (which coincide, for example, with a natural frequency of the rolling mill or a subsystem) or frequency components with high amplitude or intensity (eg from a spectrum of an FFT (Fast Fourier Transform) or PSD (Power Signal Density)) and feed it to the controller.
- FFT Fast Fourier Transform
- PSD Power Signal Density
- the actuator changes a volume corresponding to the manipulated variable in the vibration absorber, the volume corresponding to the manipulated variable (a manipulated variable of zero corresponds for example to an undeflected (neutral) position of the actuator, a maximum manipulated variable can then be, for example, a maximum deflection in one direction) and thereby a natural frequency of the vibration absorber is changed.
- the inventive method can be carried out when the actuator changes the volume of a Helmholtz resonator or the active length of a ⁇ / 4 resonator.
- the natural frequency can be adjusted in a simple manner.
- the device comprises a pressure sensor connected to the hydraulic system for detecting a pressure signal, a member for determining a change proportion of the pressure signal, to which the pressure signal can be supplied, at least one control device to which the alternating component can be supplied and with the aid of which at least one control variable can be determined, at least one vibration damper connected to the hydraulic system and at least one actuator connected to the vibration damper with a variable volume, the the manipulated variable can be supplied and over which a resonator volume of the vibration absorber can be changed.
- a natural frequency of the vibration absorber can be adjusted via the resonator volume, whereby the natural frequency can be adapted to a frequency of the pressure oscillations.
- vibration damper is designed as a ⁇ / 4 or Helmholtz resonator.
- a particularly inexpensive device can be achieved if the actuator as an electric lifting spindle
- Actuator or hydraulic actuator is executed. Since the adjustment of the actuator can be slow compared to systems with active vibration compensation, conventional electrical or hydraulic actuators are completely sufficient.
- the device according to the invention can be used when the device is in communication with a hydraulic valve and a hydraulic cylinder of a hydraulic roller adjustment.
- a hydraulic valve and a hydraulic cylinder of a hydraulic roller adjustment By means of this installation, the reduction of vibrations on the rolls of a roll stand is particularly easy, whereby the quality of the rolling stock can be effectively improved.
- the installation is particularly compact when the device is installed in an intermediate plate of the hydraulic valve.
- Fig. 1 Scheme of a controlled system for the semi-active reduction of pressure oscillations in a hydraulic system
- Fig. 2 Scheme of a device according to the invention for reducing pressure oscillations in a hydraulic system of a rolling mill
- Figs. 3 and 4 schemes of a vibration damper with integrated actuator
- Fig. 1 shows the basic structure of a controlled system for the reduction of pressure oscillations in a hydraulic system a rolling mill.
- a pressure transducer 1 Via a pressure transducer 1, a pressure signal of a pressure in the hydraulic system is detected, the pressure signal 2 is passed to a high-pass filter 3 (for details on the electronic circuit, see eg P. 35 in P. Horowitz, W. Hill, The Art of Electronics, Cambridge University Press).
- Manipulated variable signal is then fed to an amplifier 8, which controls an actuator 9, designed as an electric lifting spindle actuator.
- the actuator 9 the resonator volume of a designed as a Helmholtz resonator vibration absorber 13 is changed, wherein the change of the resonator volume corresponds to the manipulated variable 6.
- a natural frequency of the vibration absorber 13 is changed, whereby the natural frequency of the vibration absorber is made to coincide with a frequency of the pressure vibration.
- FIG. 2 is a schematic device for suppressing pressure oscillations in a hydraulic system of a scaffold for rolling iron-steel or aluminum materials is shown.
- a pressure signal 2 is detected by means of a pressure transducer 1 by permanently measuring a pressure in a hydraulic system 10, the hydraulic system comprising a hydraulic valve 11, a hydraulic cylinder 12 and a hydraulic line.
- the hydraulic system is used to hire a roller 14 for rolling a rolling stock 15.
- the pressure transducer 1 can either in the section between a vibration damper 13 and the hydraulic cylinder 12 (as shown) or in the portion between the hydraulic valve 11 and the vibration damper 13 are located.
- a plurality of pressure transducers between the vibration damper 13 and the hydraulic cylinder 12 or between the hydraulic valve 11 and the vibration damper 13 are arranged.
- the pressure signal 2 is transmitted to a digital controller 4, which determines a frequency band of the alternating component of the pressure signal and calculates a temporally variable manipulated variable 6 with the aid of a control algorithm.
- the manipulated variable is supplied after amplification in an amplifier, not shown, designed as an electric actuator stroke actuator actuator 9, which changes a corresponding with the manipulated variable 6 resonator volume in the designed as a Helmholtz resonator vibration absorber 13, so that a natural frequency of the vibration 13 to a frequency of Pressure oscillations is adjusted, whereby the amplitude of a pressure oscillation is reduced.
- FIG. 3 shows a vibration damper 13 embodied as a Helmholtz resonator with an integrated actuator 9.
- Vibration modifier 13 variable, wherein the natural frequency f of the Helmholtz resonator by the condition
- c is the speed of sound in the pressure fluid
- S ' is the cross-sectional area and L' the Length in the resonator throat
- L the length and S the cross-sectional area of the resonator volume V (see Chapter 8.3.3 Resonators in the textbook H. Kuttruff, Acoustics - An introduction, Taylor and Francis, 2007).
- FIG. 4 shows a vibration damper 13 embodied as a ⁇ / 4 resonator with an integrated actuator 9.
- the actuator 9, a manipulated variable 6 can be supplied, whereby the active length L of the ⁇ / 4 resonator is variable.
- the active length L is a
- Natural frequency of the vibration absorber 13 variable wherein the natural frequency f of the ⁇ / 4 resonator by the condition given is.
- the velocity of sound in the pressure fluid is indicated by c and the active length by L.
- the method or the device according to the invention can be used in any hydraulic systems of mobile or industrial hydraulics.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Metal Rolling (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Metal Rolling (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0189608A AT507087B1 (de) | 2008-12-05 | 2008-12-05 | Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem |
| PCT/EP2009/066020 WO2010063664A1 (de) | 2008-12-05 | 2009-11-30 | Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2355941A1 true EP2355941A1 (de) | 2011-08-17 |
Family
ID=41664439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09799567A Withdrawn EP2355941A1 (de) | 2008-12-05 | 2009-11-30 | Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20110302976A1 (de) |
| EP (1) | EP2355941A1 (de) |
| JP (1) | JP2012510900A (de) |
| KR (1) | KR20110094322A (de) |
| CN (1) | CN102271832B (de) |
| AT (1) | AT507087B1 (de) |
| BR (1) | BRPI0922291A2 (de) |
| CA (1) | CA2745804A1 (de) |
| MX (1) | MX2011005501A (de) |
| RU (1) | RU2527496C2 (de) |
| WO (1) | WO2010063664A1 (de) |
Families Citing this family (23)
| 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 |
| IT1402012B1 (it) | 2010-10-08 | 2013-08-28 | Danieli Off Mecc | Sistema di smorzamento di vibrazioni di un laminatoio |
| ITMI20120476A1 (it) * | 2012-03-26 | 2013-09-27 | Danieli Off Mecc | Sistema di smorzamento di vibrazioni mediante un sistema di attuazione idraulico |
| DE102012023902B3 (de) * | 2012-12-07 | 2014-03-20 | Arburg Gmbh + Co. Kg | Verfahren zum Betrieb einer Hydraulikeinrichtung mit Pumpe und Servomotor sowie zugehörige Hydraulikeinrichtung |
| ITMI20132170A1 (it) * | 2013-12-20 | 2015-06-21 | Danieli Off Mecc | Sistema di smorzamento attivo di vibrazioni di un laminatoio |
| JP6564184B2 (ja) * | 2014-12-18 | 2019-08-21 | 日本電産トーソク株式会社 | 電磁弁制御装置および電磁弁制御方法 |
| US9829139B2 (en) | 2015-02-19 | 2017-11-28 | Robert Bosch Gmbh | Method of dampening pressure pulsations in a working fluid within a conduit |
| CN106762995B (zh) * | 2017-02-22 | 2018-09-25 | 中冶华天南京工程技术有限公司 | 一种可调的抑制伺服阀自激振荡装置 |
| JP6898559B2 (ja) * | 2017-09-07 | 2021-07-07 | シンフォニアテクノロジー株式会社 | エアノズル、及びこれを備えたパーツフィーダ |
| EP3610961B1 (de) * | 2018-08-15 | 2023-04-19 | Muhr und Bender KG | Vorrichtung, walzanlage und verfahren zum regeln eines bandzuges beim flexiblen walzen von metallband |
| DE102018126185A1 (de) * | 2018-10-22 | 2020-04-23 | Schaeffler Technologies AG & Co. KG | Werkzeug und Verfahren zur mechanischen Oberflächenbearbeitung |
| DE102019204724B3 (de) * | 2019-04-03 | 2020-10-01 | Audi Ag | Verfahren zum Betreiben eines Hydraulikventils einer Hydraulikeinrichtung einer Kraftfahrzeuggetriebeeinrichtung sowie Kraftfahrzeuggetriebeeinrichtung |
| WO2020239589A1 (de) * | 2019-05-24 | 2020-12-03 | Primetals Technologies Austria GmbH | Industrieanlage mit einem dämpfungssystem zum dämpfen von schwingungen |
| DE102020205139A1 (de) | 2020-04-23 | 2021-10-28 | Zf Friedrichshafen Ag | Adaptive Reibungsminimierung für elektrohydraulische Aktoren |
| DE102020207274B3 (de) * | 2020-06-10 | 2021-10-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hydraulik-Aggregat für eine Strangpresse, Baureihe derartiger Aggregate und Strangpresse mit dem Hydraulik-Aggregat |
| CN114576458A (zh) * | 2020-11-18 | 2022-06-03 | 北京机械设备研究所 | 一种结构可调的流体脉动消振器及其消振方法 |
| EP4094857A1 (de) | 2021-05-28 | 2022-11-30 | Primetals Technologies Austria GmbH | Stabilisierung der arbeits- und stützwalzen eines walzgerüsts während des warmwalzens eines walzguts zu einem band in dem walzgerüst |
| CN115488156B (zh) * | 2021-06-18 | 2024-10-29 | 上海宝信软件股份有限公司 | 冷轧机液压压下位置控制系统震荡检测与保护方法及系统 |
| EP4252929A1 (de) | 2022-03-28 | 2023-10-04 | Primetals Technologies Austria GmbH | Konstruktive ausgestaltung und anordnung eines dissipators zur unterdrückung von schwingungen an einem walzgerüst |
| CN115163735A (zh) * | 2022-07-18 | 2022-10-11 | 吴玥 | 一种液压油实时控温的高压大流量液压元件 |
| CN115780521B (zh) * | 2022-11-29 | 2025-06-27 | 太原重工股份有限公司 | 一种芯棒支撑架调整装置液压控制系统及控制方法 |
| CN116107293B (zh) * | 2023-04-10 | 2023-06-16 | 商飞软件有限公司 | 一种民用飞机飞控系统作动回路故障诊断系统及诊断方法 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19536977A1 (de) * | 1994-10-03 | 1996-04-04 | Caterpillar Inc | Vorrichtung und Verfahren zur Dämpfung von Geräusch in Strömungsmitteln |
| US6234758B1 (en) * | 1999-12-01 | 2001-05-22 | Caterpillar Inc. | Hydraulic noise reduction assembly with variable side branch |
Family Cites Families (59)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572032A (en) * | 1968-07-18 | 1971-03-23 | William M Terry | Immersible electrohydraulic failsafe valve operator |
| US3806202A (en) * | 1971-03-18 | 1974-04-23 | Toyota Motor Co Ltd | Skid controlling system for vehicles |
| US3918302A (en) * | 1973-09-20 | 1975-11-11 | British Steel Corp | Rolling mill test equipment |
| US3969987A (en) * | 1974-11-11 | 1976-07-20 | Hydroacoustics Inc. | Hydroacoustic apparatus and valving mechanisms for use therein |
| US3991655A (en) * | 1974-11-11 | 1976-11-16 | Hydroacoustics Inc. | Hydroacoustic apparatus and valving mechanisms for use therein |
| US4266606A (en) * | 1979-08-27 | 1981-05-12 | Teleco Oilfield Services Inc. | Hydraulic circuit for borehole telemetry apparatus |
| JPS6145130A (ja) * | 1984-08-07 | 1986-03-05 | Toyo Tire & Rubber Co Ltd | 液体減衰式防振支承装置 |
| US4718490A (en) * | 1986-12-24 | 1988-01-12 | Mobil Oil Corporation | Creation of multiple sequential hydraulic fractures via hydraulic fracturing combined with controlled pulse fracturing |
| US4774976A (en) * | 1987-09-23 | 1988-10-04 | Applied Power Inc. | Modulating hydraulic pressure control valve and assembly method therefor |
| JPH0729564B2 (ja) * | 1987-09-29 | 1995-04-05 | トヨタ自動車株式会社 | 四輪駆動装置の制御方法 |
| SU1507467A1 (ru) * | 1987-12-21 | 1989-09-15 | Производственное объединение "Новокраматорский машиностроительный завод" | Лини клети прокатного стана |
| DE3844059A1 (de) * | 1988-12-28 | 1990-08-30 | Allweiler Ag | Vorrichtung und verfahren zum bewegen von stroemungsmedien |
| JPH03179501A (ja) * | 1989-12-08 | 1991-08-05 | Kobe Steel Ltd | 油圧サーボ系の制御装置 |
| US5343752A (en) * | 1992-04-20 | 1994-09-06 | Team Corporation | High frequency vibration test fixture with hydraulic servo valve and piston actuator |
| US5228510A (en) * | 1992-05-20 | 1993-07-20 | Mobil Oil Corporation | Method for enhancement of sequential hydraulic fracturing using control pulse fracturing |
| DE4302977A1 (de) * | 1993-02-03 | 1994-03-31 | Bosch Gmbh Robert | Hydraulikanlage |
| US5385329A (en) * | 1993-02-16 | 1995-01-31 | Techco Corporation | Method and apparatus for enhancing stability in hydraulic flow control |
| US5518219A (en) * | 1995-01-31 | 1996-05-21 | Applied Power Inc. | Proportional pressure control pilot valve |
| JP3035185B2 (ja) * | 1995-03-02 | 2000-04-17 | 本田技研工業株式会社 | 車両用油圧作動式変速機の制御装置 |
| JP3602599B2 (ja) * | 1995-03-02 | 2004-12-15 | 本田技研工業株式会社 | 車両用油圧作動式変速機の制御装置 |
| US5582265A (en) * | 1995-05-26 | 1996-12-10 | Trw Inc. | Power steering assembly |
| RU2117204C1 (ru) * | 1996-06-25 | 1998-08-10 | Акционерное общество "АвтоВАЗ" | Дроссельное устройство |
| DE19747158A1 (de) * | 1997-10-24 | 1999-04-29 | Wolf Woco & Co Franz J | Pulsationsdämpfer |
| US5984259A (en) * | 1997-11-26 | 1999-11-16 | Saturn Electronics & Engineering, Inc. | Proportional variable force solenoid control valve with armature damping |
| US6179268B1 (en) * | 1998-04-21 | 2001-01-30 | Saturn Electronics & Engineering, Inc. | Proportional variable force solenoid control valve with segmented permanent magnet |
| GB9826322D0 (en) * | 1998-12-02 | 1999-01-20 | Mandeville Eng Ltd | Directional control valves |
| DE19918555C1 (de) * | 1999-04-23 | 2001-06-07 | Oskar Bschorr | Stabilisierung von Walzanlagen gegenüber selbsterregten Ratterschwingungen |
| AUPQ120999A0 (en) * | 1999-06-25 | 1999-07-22 | Industrial Automation Services Pty Ltd | Vibration suppressing piston |
| US8409847B2 (en) * | 2000-10-06 | 2013-04-02 | ICE Development Technologies, LLC | System and method for controlling the diameter of a mammilian hybrid coronary bypass graft |
| EP1234748B1 (de) * | 2001-02-23 | 2003-11-12 | Visteon Global Technologies, Inc. | Dämpfungsventil für hydraulisch unterstütztes Lenkungssystem |
| DE10112674C1 (de) * | 2001-03-16 | 2002-02-14 | Fte Automotive Gmbh | Vorrichtung zur Reduzierung von Schwingungen in einem hydraulischen Kraftübertragungssystem |
| JP2002274358A (ja) * | 2001-03-23 | 2002-09-25 | Unisia Jecs Corp | アンチスキッド制御装置 |
| US6640409B2 (en) * | 2001-09-25 | 2003-11-04 | Case Corporation | Method for retrofitting a swing damping valve circuit to a work vehicle |
| JP2004155236A (ja) * | 2002-11-05 | 2004-06-03 | Advics:Kk | 車両用液圧ブレーキ装置 |
| AT500766B1 (de) * | 2003-03-10 | 2008-06-15 | Voest Alpine Ind Anlagen | Verfahren und vorrichtung zur vermeidung von schwingungen |
| DE10316946A1 (de) * | 2003-04-12 | 2004-10-21 | Daimlerchrysler Ag | Vorrichtung und Verfahren zur Dämpfung von Druckschwingungen in Hydraulikleitungen |
| DE102004012945A1 (de) * | 2004-03-17 | 2005-10-13 | Cnh Baumaschinen Gmbh | Vorrichtung und Verfahren zur Bewegungstilgung bei Baumaschinen |
| US7225657B2 (en) * | 2004-05-05 | 2007-06-05 | United States Steel Corporation | Elimination of rolling mill chatter |
| ITBO20040639A1 (it) * | 2004-10-15 | 2005-01-15 | Cnh Italia Spa | Apparecchiatura di pompaggio per liquidi, in particolare per olio |
| FR2877862B1 (fr) * | 2004-11-12 | 2007-02-16 | Vai Clecim Soc Par Actions Sim | Procede de detection des vibrations d'une cage de laminoir |
| CN100410549C (zh) * | 2004-12-28 | 2008-08-13 | 东芝机械株式会社 | 液压控制装置 |
| US7278262B2 (en) * | 2005-06-03 | 2007-10-09 | Board Of Control Of Michigan Technological University | Control system for suppression of boom or arm oscillation |
| US20090145485A1 (en) * | 2005-08-11 | 2009-06-11 | Eksigent Technologies, Llc | Microfluidic methods and apparatuses for fluid mixing and valving |
| CN1775394A (zh) * | 2005-11-29 | 2006-05-24 | 苏州有色金属加工研究院 | 铝板带轧机厚度自适应模糊控制方法 |
| DE102005058547B4 (de) * | 2005-12-08 | 2012-04-12 | Airbus Operations Gmbh | Einrichtung zur Verminderung von Hydrofluidschwingungen in einem Hydrauliksystem |
| US8127791B2 (en) * | 2005-12-21 | 2012-03-06 | Saturn Electronics & Engineering, Inc. | Solenoid operated fluid control valve |
| DE102006008574A1 (de) * | 2006-02-22 | 2007-08-30 | Siemens Ag | Verfahren zur Unterdrückung des Einflusses von Walzenexzentrizitäten |
| DE102006024101A1 (de) * | 2006-05-23 | 2007-11-29 | Sms Demag Ag | Walzgerüst und Verfahren zum Walzen eines Walzbandes |
| US7614307B2 (en) * | 2006-06-06 | 2009-11-10 | Eaton Corporation | Manifold assembly having a centralized pressure sensing package |
| JP4545127B2 (ja) * | 2006-09-15 | 2010-09-15 | 株式会社デンソー | バルブタイミング調整装置 |
| US20080314591A1 (en) * | 2007-06-21 | 2008-12-25 | Hales John H | Single trip well abandonment with dual permanent packers and perforating gun |
| AT506398B1 (de) * | 2008-06-18 | 2009-09-15 | Siemens Vai Metals Tech Gmbh | Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage |
| US20100084588A1 (en) * | 2008-10-07 | 2010-04-08 | Diamond Offshore Drilling, Inc. | Deepwater Hydraulic Control System |
| DE102010046285B4 (de) * | 2009-09-29 | 2022-05-05 | Mando Corporation | Elektronisch gesteuertes Bremssystem mit einer Pumpeneinheit |
| US8640545B2 (en) * | 2009-10-05 | 2014-02-04 | Pcb Piezotronics, Inc. | Vibration sensor with mechanical isolation member |
| CN102639902A (zh) * | 2009-12-28 | 2012-08-15 | 昕芙旎雅有限公司 | 减震装置、电动致动器驱动装置以及车辆 |
| US20110289911A1 (en) * | 2010-06-01 | 2011-12-01 | Mark Phillip Vonderwell | Hydraulic system and method of actively damping oscillations during operation thereof |
| DE102010061337B4 (de) * | 2010-12-20 | 2015-07-09 | Hilite Germany Gmbh | Hydraulikventil für einen Schwenkmotorversteller |
| US20130062934A1 (en) * | 2011-09-13 | 2013-03-14 | Kelsey-Hayes Company | Mechanical attenuator for a vehicle braking system |
-
2008
- 2008-12-05 AT AT0189608A patent/AT507087B1/de not_active IP Right Cessation
-
2009
- 2009-11-30 EP EP09799567A patent/EP2355941A1/de not_active Withdrawn
- 2009-11-30 US US13/132,975 patent/US20110302976A1/en not_active Abandoned
- 2009-11-30 MX MX2011005501A patent/MX2011005501A/es not_active Application Discontinuation
- 2009-11-30 RU RU2011127440/02A patent/RU2527496C2/ru not_active IP Right Cessation
- 2009-11-30 BR BRPI0922291A patent/BRPI0922291A2/pt not_active IP Right Cessation
- 2009-11-30 CA CA2745804A patent/CA2745804A1/en not_active Abandoned
- 2009-11-30 CN CN200980148832.5A patent/CN102271832B/zh not_active Expired - Fee Related
- 2009-11-30 WO PCT/EP2009/066020 patent/WO2010063664A1/de not_active Ceased
- 2009-11-30 KR KR1020117015148A patent/KR20110094322A/ko not_active Ceased
- 2009-11-30 JP JP2011538977A patent/JP2012510900A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19536977A1 (de) * | 1994-10-03 | 1996-04-04 | Caterpillar Inc | Vorrichtung und Verfahren zur Dämpfung von Geräusch in Strömungsmitteln |
| US6234758B1 (en) * | 1999-12-01 | 2001-05-22 | Caterpillar Inc. | Hydraulic noise reduction assembly with variable side branch |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2010063664A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012510900A (ja) | 2012-05-17 |
| KR20110094322A (ko) | 2011-08-23 |
| RU2527496C2 (ru) | 2014-09-10 |
| RU2011127440A (ru) | 2013-01-10 |
| BRPI0922291A2 (pt) | 2015-12-29 |
| CA2745804A1 (en) | 2010-06-10 |
| CN102271832B (zh) | 2014-06-11 |
| AT507087B1 (de) | 2010-02-15 |
| US20110302976A1 (en) | 2011-12-15 |
| AT507087A4 (de) | 2010-02-15 |
| CN102271832A (zh) | 2011-12-07 |
| WO2010063664A1 (de) | 2010-06-10 |
| MX2011005501A (es) | 2011-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT507087B1 (de) | Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem | |
| AT507088B1 (de) | Verfahren und vorrichtung zur aktiven unterdrückung von druckschwingungen in einem hydrauliksystem | |
| EP2285506B1 (de) | Verfahren und vorrichtung zur unterdrückung von schwingungen in einer walzanlage | |
| EP3352921B1 (de) | Walzgerüst, walzlanlage und verfahren zum aktiven dämpfen von schwingungen in einem walzgerüst | |
| EP2519365A2 (de) | Verfahren zur regelung von seitenführungen eines metallbandes | |
| EP2125258B1 (de) | Regelanordnung für ein walzgerüst und hiermit korrespondierende gegenstände | |
| AT500766B1 (de) | Verfahren und vorrichtung zur vermeidung von schwingungen | |
| DE3422762C2 (de) | ||
| DE2828151A1 (de) | Vorrichtung zur steuerung der lage einer walze in ihrer axialen richtung beim walzen eines materials | |
| EP4259506A1 (de) | Prüfstand zur prüfung von drehgestellen von schienenfahrzeugen | |
| DE102007050911A1 (de) | Verfahren und Vorrichtung zum Unterdrücken des Ratterns von Arbeitswalzen eines Walzgerüsts | |
| DE102006008574A1 (de) | Verfahren zur Unterdrückung des Einflusses von Walzenexzentrizitäten | |
| DE102010062199A1 (de) | Konzept zum Einstellen von Prozessparametern eines Walzprozesses mittels eines gemessenen Lagerschlupfes | |
| EP2268427B1 (de) | Betriebsverfahren für eine kaltwalzstrasse mit verbesserter dynamik | |
| EP4094857A1 (de) | Stabilisierung der arbeits- und stützwalzen eines walzgerüsts während des warmwalzens eines walzguts zu einem band in dem walzgerüst | |
| DE102015202266A1 (de) | Verfahren und Vorrichtung zur Ermittlung der von einer Kolben-Zylindereinheit erzeugten Gesamtkraft | |
| WO2015079055A1 (de) | Anordnung und verfahren zum einstellen eines arbeitsspalts zwischen arbeitswalzen eines walz- und/oder führungsgerüstes | |
| DE1918207A1 (de) | Regelungseinrichtung fuer ein Walzwerk | |
| DE102009046156A1 (de) | Verfahren zur Fahrwerkregelung eines Fahrzeugs sowie entsprechende Vorrichtung | |
| EP3706933A1 (de) | STRANGFÜHRUNGSSEGMENT UND STRANGGIEßANLAGE | |
| DE10102037A1 (de) | Verfahren und Vorrichtung zur Steuerung oder Regelung des Walzvorgangs von Walzgut | |
| DE102010041615A1 (de) | Verfahren zum Betreiben eines Kalanders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20110516 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20140708 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PRIMETALS TECHNOLOGIES AUSTRIA GMBH |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20150728 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20151208 |