EP2476916A3 - Kolben-Zylinder-Einheit mit Vorrichtung zur Positionsbestimmung - Google Patents

Kolben-Zylinder-Einheit mit Vorrichtung zur Positionsbestimmung Download PDF

Info

Publication number
EP2476916A3
EP2476916A3 EP11010014.6A EP11010014A EP2476916A3 EP 2476916 A3 EP2476916 A3 EP 2476916A3 EP 11010014 A EP11010014 A EP 11010014A EP 2476916 A3 EP2476916 A3 EP 2476916A3
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder unit
cylinder
position tracking
resonant frequency
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.)
Granted
Application number
EP11010014.6A
Other languages
English (en)
French (fr)
Other versions
EP2476916B1 (de
EP2476916A2 (de
Inventor
Rodolphe Dr.-Ing. De Maglie
Alfred Dr.-Ing. Engler
Ralf Dr.-Ing. Cremer
Hans-Peter Lavergne
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.)
Liebherr Electronics and Drives GmbH
Original Assignee
Liebherr Elektronik GmbH
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.)
Filing date
Publication date
Application filed by Liebherr Elektronik GmbH filed Critical Liebherr Elektronik GmbH
Publication of EP2476916A2 publication Critical patent/EP2476916A2/de
Publication of EP2476916A3 publication Critical patent/EP2476916A3/de
Application granted granted Critical
Publication of EP2476916B1 publication Critical patent/EP2476916B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2869—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using electromagnetic radiation, e.g. radar or microwaves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Toxicology (AREA)
  • Actuator (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Die Erfindung betrifft eine Kolben-Zylinder-Einheit (10) mit einer Vorrichtung zur Positionsbestimmung, wobei die Vorrichtung wenigstens ein Anregungsmittel (50) umfasst, das mittelbar bzw. unmittelbar mit dem Zylindermantel (20) und dem Zylinderkolben (30) der Kolben-Zylinder-Einheit leitend in Verbindung steht und den aus der Kolben-Zylinder-Einheit (10) und den Kontaktleitungen (40) gebildeten elektrischen Schwingkreis zur Schwingung in seiner Resonanzfrequenz anregt, wobei an der Kolben-Zylinder-Einheit (10) ein die Resonanzfrequenz charakterisierendes elektrisches Signal abgreifbar ist. Die Erfindung betrifft des weiteren eine Baumaschine bzw. ein Hubgerät mit einer derartigen Kolben-Zylinder-Einheit.
EP11010014.6A 2011-01-12 2011-12-20 Kolben-Zylinder-Einheit mit Vorrichtung zur Positionsbestimmung Not-in-force EP2476916B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011008381A DE102011008381A1 (de) 2011-01-12 2011-01-12 Kolben-Zylinder-Einheit mit Vorrichtung zur Positionsbestimmung

Publications (3)

Publication Number Publication Date
EP2476916A2 EP2476916A2 (de) 2012-07-18
EP2476916A3 true EP2476916A3 (de) 2014-03-26
EP2476916B1 EP2476916B1 (de) 2017-08-16

Family

ID=45470172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11010014.6A Not-in-force EP2476916B1 (de) 2011-01-12 2011-12-20 Kolben-Zylinder-Einheit mit Vorrichtung zur Positionsbestimmung

Country Status (4)

Country Link
US (1) US9027460B2 (de)
EP (1) EP2476916B1 (de)
JP (1) JP2012145226A (de)
DE (1) DE102011008381A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0911016D0 (en) 2009-06-25 2009-08-12 Airbus Operations Ltd Electrical power transmitting telescopic strut
DE102012100335B4 (de) * 2012-01-16 2013-11-07 Parker Hannifin Manufacturing Germany GmbH & Co. KG Druckbehälter mit einem darin beweglichen Kolben und einer Vorrichtung zur Positionsbestimmung des Kolbens in dem Druckbehälter
NO20120980A1 (no) * 2012-08-31 2014-03-03 Aker Mh As Antennesammenstilling for stempelakkumulatorer
DE102013001121A1 (de) 2013-01-23 2014-07-24 Liebherr-Elektronik Gmbh Verfahren zur Bestimmung der Kolbenposition einer Kolbenzylindereinheit und Kolbenzylindereinheit
DE102013018342A1 (de) * 2013-10-31 2015-04-30 Liebherr-Elektronik Gmbh Kolbenzylindereinheit mit Auswerteeinheit zur Positionsbestimmung des Kolbens
US10365370B2 (en) 2016-10-31 2019-07-30 Timothy Webster Wear tolerant hydraulic / pneumatic piston position sensing using optical sensors
EP4169822A4 (de) * 2020-06-23 2024-03-27 Hitachi Astemo, Ltd. Kalibrierungsvorrichtung, aufhängungssystem, sattelfahrzeug und kalibrierverfahren
WO2023033779A1 (en) * 2021-09-02 2023-03-09 Skvorchevsky Alexander Electro-hydraulic servo drive and a method of controlling the position of its rod with a piston

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1525363A (fr) * 1967-04-07 1968-05-17 Compteurs Et Moteurs Aster Vérin comportant un dispositif de contrôle et de commande de sa position
DE20218623U1 (de) * 2002-11-30 2003-02-13 FESTO AG & Co., 73734 Esslingen Positionsmessvorrichtung für fluidische Zylinder
US20100089144A1 (en) * 2008-07-31 2010-04-15 Liebherr-Elektronik Gmbh Position Measuring Device for a Fluidic Cylinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901628A (en) * 1983-08-11 1990-02-20 General Motors Corporation Hydraulic actuator having a microwave antenna
US5901633A (en) * 1996-11-27 1999-05-11 Case Corporation Method and apparatus for sensing piston position using a dipstick assembly
WO2007011402A2 (en) * 2004-10-26 2007-01-25 Georgia Tech Research Corporation Displacement sensor
EP1752665B1 (de) * 2005-08-11 2009-05-06 Festo AG & Co. KG Aktorvorrichtung mit einer Mikrowellen-Positionsmesseinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1525363A (fr) * 1967-04-07 1968-05-17 Compteurs Et Moteurs Aster Vérin comportant un dispositif de contrôle et de commande de sa position
DE20218623U1 (de) * 2002-11-30 2003-02-13 FESTO AG & Co., 73734 Esslingen Positionsmessvorrichtung für fluidische Zylinder
US20100089144A1 (en) * 2008-07-31 2010-04-15 Liebherr-Elektronik Gmbh Position Measuring Device for a Fluidic Cylinder

Also Published As

Publication number Publication date
US9027460B2 (en) 2015-05-12
US20120174771A1 (en) 2012-07-12
EP2476916B1 (de) 2017-08-16
DE102011008381A1 (de) 2012-07-12
EP2476916A2 (de) 2012-07-18
JP2012145226A (ja) 2012-08-02

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