DE3862318D1 - Elektrohydraulisches servosystem. - Google Patents

Elektrohydraulisches servosystem.

Info

Publication number
DE3862318D1
DE3862318D1 DE8888102539T DE3862318T DE3862318D1 DE 3862318 D1 DE3862318 D1 DE 3862318D1 DE 8888102539 T DE8888102539 T DE 8888102539T DE 3862318 T DE3862318 T DE 3862318T DE 3862318 D1 DE3862318 D1 DE 3862318D1
Authority
DE
Germany
Prior art keywords
servo system
electrohydraulic servo
electrohydraulic
servo
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.)
Expired - Fee Related
Application number
DE8888102539T
Other languages
English (en)
Inventor
Lael Brent Taplin
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.)
Vickers Inc
Original Assignee
Vickers Inc
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 Vickers Inc filed Critical Vickers Inc
Application granted granted Critical
Publication of DE3862318D1 publication Critical patent/DE3862318D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F15B15/2869—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using electromagnetic radiation, e.g. radar or microwaves
    • 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
DE8888102539T 1987-02-26 1988-02-22 Elektrohydraulisches servosystem. Expired - Fee Related DE3862318D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/019,189 US4757745A (en) 1987-02-26 1987-02-26 Microwave antenna and dielectric property change frequency compensation system in electrohydraulic servo with piston position control

Publications (1)

Publication Number Publication Date
DE3862318D1 true DE3862318D1 (de) 1991-05-16

Family

ID=21791893

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888102539T Expired - Fee Related DE3862318D1 (de) 1987-02-26 1988-02-22 Elektrohydraulisches servosystem.

Country Status (5)

Country Link
US (1) US4757745A (de)
EP (1) EP0280980B1 (de)
JP (1) JPS63214502A (de)
CA (1) CA1325664C (de)
DE (1) DE3862318D1 (de)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD271619A3 (de) * 1987-04-03 1989-09-13 Bauakademie Ddr Einrichtung zum kontinuierlichen bewegen von lasten
US4987823A (en) * 1989-07-10 1991-01-29 Vickers, Incorporated Location of piston position using radio frequency waves
US4952916A (en) * 1989-12-04 1990-08-28 Vickers, Incorporated Power transmission
US5438274A (en) * 1991-12-23 1995-08-01 Caterpillar Linear position sensor using a coaxial resonant cavity
US5182979A (en) * 1992-03-02 1993-02-02 Caterpillar Inc. Linear position sensor with equalizing means
US5325063A (en) * 1992-05-11 1994-06-28 Caterpillar Inc. Linear position sensor with means to eliminate spurians harmonic detections
DE4228308A1 (de) * 1992-08-26 1994-03-03 Rexroth Mannesmann Gmbh Hydraulische Antriebsvorrichtung, insbesondere für eine Werkzeugmaschine
DE9305640U1 (de) * 1993-04-15 1994-08-25 Hydraulik Techniek Druckmittelbetätigter Arbeitszylinder
US5608332A (en) * 1995-05-09 1997-03-04 Caterpillar Inc. Dynamic gain adjustment in electromagnetic wave hydraulic cylinder piston position sensing
US5710514A (en) * 1995-05-09 1998-01-20 Caterpillar, Inc. Hydraulic cylinder piston position sensing with compensation for piston velocity
US5617034A (en) * 1995-05-09 1997-04-01 Caterpillar Inc. Signal improvement in the sensing of hydraulic cylinder piston position using electromagnetic waves
US5760731A (en) * 1995-12-19 1998-06-02 Fisher Controls International, Inc. Sensors and methods for sensing displacement using radar
US5901633A (en) * 1996-11-27 1999-05-11 Case Corporation Method and apparatus for sensing piston position using a dipstick assembly
US6142059A (en) * 1996-11-27 2000-11-07 Case Corporation Method and apparatus for sensing the orientation of a mechanical actuator
US5977778A (en) * 1996-11-27 1999-11-02 Case Corporation Method and apparatus for sensing piston position
US5844390A (en) * 1997-01-27 1998-12-01 Cameron; Robert Method and apparatus for regulating a fluid operated machine
US5880681A (en) * 1997-09-16 1999-03-09 Caterpillar Inc. Apparatus for determining the position of a work implement
US6005395A (en) * 1997-11-12 1999-12-21 Case Corporation Method and apparatus for sensing piston position
AU2001241641A1 (en) * 2000-03-08 2001-09-17 Rosemount, Inc. Piston position measuring device
DE60112266T2 (de) 2000-03-08 2006-06-08 Rosemount Inc., Eden Prairie Bidirektionaler differenzdruck- durchflusssensor
US20010037689A1 (en) * 2000-03-08 2001-11-08 Krouth Terrance F. Hydraulic actuator piston measurement apparatus and method
US20010037724A1 (en) 2000-03-08 2001-11-08 Schumacher Mark S. System for controlling hydraulic actuator
US6588313B2 (en) 2001-05-16 2003-07-08 Rosemont Inc. Hydraulic piston position sensor
CN1254925C (zh) * 2001-09-27 2006-05-03 株式会社东芝 便携式无线电设备
WO2003062840A1 (en) * 2002-01-18 2003-07-31 Her Majesty In Right Of Canada As Represented By The Minister Of Industry Antenna array for the measurement of complex electromagnetic fields
US6722261B1 (en) 2002-12-11 2004-04-20 Rosemount Inc. Hydraulic piston position sensor signal processing
US6722260B1 (en) 2002-12-11 2004-04-20 Rosemount Inc. Hydraulic piston position sensor
US7098671B2 (en) * 2003-03-07 2006-08-29 Fred Bassali Microwave measurement system for piston displacement
DE102008061227A1 (de) * 2008-11-14 2010-07-15 Astyx Gmbh Abstandsmessvorrichtung und Verfahren zur Ermittlung eines Abstands in einer Leitungsstruktur
DE102010033369B4 (de) 2010-08-04 2016-06-09 Festo Ag & Co. Kg Linearantrieb
US8761329B2 (en) * 2011-09-22 2014-06-24 Westinghouse Electric Company Llc Rod position detection apparatus and method
DE102013018808A1 (de) * 2013-11-11 2015-05-13 Astyx Gmbh Abstandsmessvorrichtung zur Ermittlung eines Abstandes sowie Verfahren zur Ermittlung des Abstands

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Publication number Priority date Publication date Assignee Title
GB883828A (en) * 1957-03-06 1961-12-06 Beloit Iron Works Improvements in or relating to methods and apparatus for sensing a constituent of a material
US3188634A (en) * 1961-12-28 1965-06-08 Jr Moody C Thompson Distance measuring system with automatic index compensation
US3290678A (en) * 1965-02-05 1966-12-06 Philips Corp Means for correcting the local oscillator frequency in a radar system
US3703005A (en) * 1965-06-21 1972-11-14 Hughes Aircraft Co Radar signal phase correction
FR1552029A (de) * 1967-10-31 1969-01-03
US3589177A (en) * 1968-10-02 1971-06-29 Merlo Angelo L Combustion microwave diagnostic system
CH515488A (de) * 1969-08-11 1971-11-15 Aga Ab Entfernungsmesseinrichtung
US3680092A (en) * 1970-03-30 1972-07-25 Ford Motor Co Ranging system using phase detection
US3688188A (en) * 1970-12-21 1972-08-29 Bendix Corp Means for measuring the density of fluid in a conduit
GB1400012A (en) * 1972-03-15 1975-07-16 British Steel Corp Distance measurement using microwaves
ZA723648B (en) * 1972-05-29 1973-09-26 South African Inventions Electronic means for resolving vernier measurements
US3798642A (en) * 1972-09-27 1974-03-19 Microlab Fxr Recognition system
US4107684A (en) * 1977-05-02 1978-08-15 E-Systems, Inc. Phase locked detector
DE2748124C2 (de) * 1977-10-27 1983-01-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zur Entfernungsmessung nach dem FM-CW-Radarprinzip
GB2063001B (en) * 1979-11-07 1984-04-26 Rolls Royce Microwave interferometer
US4381485A (en) * 1981-02-23 1983-04-26 Steinbrecher Corporation Microwave test apparatus and method
US4588953A (en) * 1983-08-11 1986-05-13 General Motors Corporation Microwave piston position location
US4628499A (en) * 1984-06-01 1986-12-09 Scientific-Atlanta, Inc. Linear servoactuator with integrated transformer position sensor
US4689553A (en) * 1985-04-12 1987-08-25 Jodon Engineering Associates, Inc. Method and system for monitoring position of a fluid actuator employing microwave resonant cavity principles

Also Published As

Publication number Publication date
EP0280980A1 (de) 1988-09-07
EP0280980B1 (de) 1991-04-10
CA1325664C (en) 1993-12-28
US4757745A (en) 1988-07-19
JPS63214502A (ja) 1988-09-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8339 Ceased/non-payment of the annual fee