DE69211349D1 - Linearer Hochfrequenz-Stellungsgeber - Google Patents

Linearer Hochfrequenz-Stellungsgeber

Info

Publication number
DE69211349D1
DE69211349D1 DE69211349T DE69211349T DE69211349D1 DE 69211349 D1 DE69211349 D1 DE 69211349D1 DE 69211349 T DE69211349 T DE 69211349T DE 69211349 T DE69211349 T DE 69211349T DE 69211349 D1 DE69211349 D1 DE 69211349D1
Authority
DE
Germany
Prior art keywords
frequency position
position transmitter
linear high
linear
transmitter
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
DE69211349T
Other languages
English (en)
Other versions
DE69211349T2 (de
Inventor
Ali Bitar
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.)
Caterpillar Inc
Original Assignee
Caterpillar 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 Caterpillar Inc filed Critical Caterpillar Inc
Application granted granted Critical
Publication of DE69211349D1 publication Critical patent/DE69211349D1/de
Publication of DE69211349T2 publication Critical patent/DE69211349T2/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/48—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Toxicology (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
DE69211349T 1992-06-29 1992-08-31 Linearer Hochfrequenz-Stellungsgeber Expired - Fee Related DE69211349T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/905,716 US5241278A (en) 1991-07-05 1992-06-29 Radio frequency linear position sensor using two subsequent harmonics
PCT/US1992/007365 WO1994000737A1 (en) 1992-06-29 1992-08-31 Radio frequency linear position sensor

Publications (2)

Publication Number Publication Date
DE69211349D1 true DE69211349D1 (de) 1996-07-11
DE69211349T2 DE69211349T2 (de) 1997-02-06

Family

ID=25421343

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69211349T Expired - Fee Related DE69211349T2 (de) 1992-06-29 1992-08-31 Linearer Hochfrequenz-Stellungsgeber

Country Status (6)

Country Link
US (1) US5241278A (de)
EP (1) EP0601121B1 (de)
JP (1) JPH06510865A (de)
AU (1) AU2573292A (de)
DE (1) DE69211349T2 (de)
WO (1) WO1994000737A1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI101109B (fi) * 1995-04-12 1998-04-15 Nokia Mobile Phones Ltd Menetelmä elektronisen laitteen tehonkulutuksen pienentämiseksi
US5710514A (en) * 1995-05-09 1998-01-20 Caterpillar, Inc. Hydraulic cylinder piston position sensing with compensation for piston velocity
US5608332A (en) * 1995-05-09 1997-03-04 Caterpillar Inc. Dynamic gain adjustment in electromagnetic wave hydraulic cylinder piston position sensing
US5617034A (en) * 1995-05-09 1997-04-01 Caterpillar Inc. Signal improvement in the sensing of hydraulic cylinder piston position using electromagnetic waves
DE19518072A1 (de) * 1995-05-17 1996-11-21 Bosch Gmbh Robert Verfahren zur Erfassung der Hubbewegung eines in einem Gehäuse verschiebbaren Körpers, insbesondere eines Ventilgliedes eines Einspritzventils
US5977778A (en) * 1996-11-27 1999-11-02 Case Corporation Method and apparatus for sensing piston position
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
US5856745A (en) * 1996-12-19 1999-01-05 Caterpillar Inc. Hydraulic cylinder end member arrangement for a piston position sensing system
US5994906A (en) * 1996-12-19 1999-11-30 Caterpillar Inc. Fluid measurement of dielectric property change in hydraulic fluid
US5780743A (en) * 1997-02-13 1998-07-14 Caterpillar Inc. Resonance identification in hydraulic cylinder piston position sensing
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
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
AU2001243213A1 (en) 2000-03-08 2001-09-17 Rosemount, Inc. Bi-directional differential pressure flow sensor
WO2001066954A2 (en) * 2000-03-08 2001-09-13 Rosemount Inc. Piston position measuring device
US7330271B2 (en) * 2000-11-28 2008-02-12 Rosemount, Inc. Electromagnetic resonant sensor with dielectric body and variable gap cavity
US6588313B2 (en) 2001-05-16 2003-07-08 Rosemont Inc. Hydraulic piston position sensor
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
US8240240B2 (en) * 2008-10-31 2012-08-14 Cnh America Llc Cylinder position sensor
JP6266613B2 (ja) 2012-07-11 2018-01-24 サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング ストッパ位置を決定するための配置および方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589177A (en) * 1968-10-02 1971-06-29 Merlo Angelo L Combustion microwave diagnostic system
US3726191A (en) * 1971-02-08 1973-04-10 Bunker Ramo Electrically controlled hydraulic system and transducer therefor
US4365503A (en) * 1980-03-28 1982-12-28 Rockwell International Apparatus for calibrating meter prover encoder
US4588953A (en) * 1983-08-11 1986-05-13 General Motors Corporation Microwave piston position location
US4901628A (en) * 1983-08-11 1990-02-20 General Motors Corporation Hydraulic actuator having a microwave antenna
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
US4737705A (en) * 1986-11-05 1988-04-12 Caterpillar Inc. Linear position sensor using a coaxial resonant cavity
US4987823A (en) * 1989-07-10 1991-01-29 Vickers, Incorporated Location of piston position using radio frequency waves

Also Published As

Publication number Publication date
US5241278A (en) 1993-08-31
AU2573292A (en) 1994-01-24
DE69211349T2 (de) 1997-02-06
EP0601121B1 (de) 1996-06-05
JPH06510865A (ja) 1994-12-01
EP0601121A1 (de) 1994-06-15
WO1994000737A1 (en) 1994-01-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee