IT1261951B - Rivelatore della posizione assiale di un'asta, in particolare lo stelodi un pistone. - Google Patents

Rivelatore della posizione assiale di un'asta, in particolare lo stelodi un pistone.

Info

Publication number
IT1261951B
IT1261951B ITRM930842A ITRM930842A IT1261951B IT 1261951 B IT1261951 B IT 1261951B IT RM930842 A ITRM930842 A IT RM930842A IT RM930842 A ITRM930842 A IT RM930842A IT 1261951 B IT1261951 B IT 1261951B
Authority
IT
Italy
Prior art keywords
magnetic
rod
sensor
stem
scale
Prior art date
Application number
ITRM930842A
Other languages
English (en)
Inventor
Masakazu Nakazato
Youichi Shimoura
Masamichi Sugihara
Original Assignee
Kayaba Industry Co Ltd
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
Priority claimed from JP04344902A external-priority patent/JP3136012B2/ja
Priority claimed from JP08754493A external-priority patent/JP3184361B2/ja
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Publication of ITRM930842A0 publication Critical patent/ITRM930842A0/it
Publication of ITRM930842A1 publication Critical patent/ITRM930842A1/it
Application granted granted Critical
Publication of IT1261951B publication Critical patent/IT1261951B/it

Links

Classifications

    • 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
    • G01D5/12—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 electric or magnetic means
    • G01D5/244—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 electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—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 electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2454—Encoders incorporating incremental and absolute signals
    • G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
    • G01D5/2457—Incremental encoders having reference marks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
    • 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
    • F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • 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
    • G01D5/12—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 electric or magnetic means
    • G01D5/14—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 electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—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 electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Actuator (AREA)

Abstract

Una prima scala magnetica consistente di una pluralità di parti non magnetiche è disposta assialmente ad uguali intervalli ed una seconda scala magnetica consistente di una pluralità di parti non magnetiche disposte assialmente ad intervalli disuguali sono formate parallelamente una all'altra su uno stelo consistente di un materiale magnetico il quale può essere spostato in direzione assiale. Le parti non magnetiche della seconda scala sono disposte simmetricamente su ambedue i lati di una predeterminata posizione sullo stelo. Un primo ed un secondo sensore magnetico sono disposti in posizioni fisse rivolte contro le scale. Una memoria che memorizza singolarmente la posizione assoluta di ciascuna parte non magnetica della seconda scala magnetica in anticipo, un meccanismo che rivela l'intervallo fra le parti non magnetiche che passano attraverso il secondo sensore ed un meccanismo per distinguere su quale lato è situato il secondo sensore con riferimento alla summenzionata posizione predeterminata sono forniti in combinazione con un meccanismo per identificare una parte non magnetica che è passata, sulla base della distinzione del risultato del meccanismo di distinzione e dell'intervallo rivelato, un meccanismo per calcolare l'ammontare dello spostamento dell'asta o stelo dalla parte magnetica identificata fino alla sua posizione corrente, sulla base del segnale di uscita dal primo sensore, nonché un meccanismo per calcolare la posizione corrente dell'asta dalla posizione assoluta della parte magnetica identificata e sulla base dello spostamento calcolato. In questa maniera, la distanza di spostamento dell'asta richiesta per ottenere una informazione sulla posizione assoluta viene ridotta.
ITRM930842A 1992-12-24 1993-12-22 Rivelatore della posizione assiale di un'asta, in particolare lo stelodi un pistone. IT1261951B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP04344902A JP3136012B2 (ja) 1992-12-24 1992-12-24 位置検出装置
JP08754493A JP3184361B2 (ja) 1993-04-14 1993-04-14 位置検出装置

Publications (3)

Publication Number Publication Date
ITRM930842A0 ITRM930842A0 (it) 1993-12-22
ITRM930842A1 ITRM930842A1 (it) 1995-06-22
IT1261951B true IT1261951B (it) 1996-06-04

Family

ID=26428807

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930842A IT1261951B (it) 1992-12-24 1993-12-22 Rivelatore della posizione assiale di un'asta, in particolare lo stelodi un pistone.

Country Status (4)

Country Link
US (1) US5497083A (it)
KR (1) KR970007064B1 (it)
DE (1) DE4344290C2 (it)
IT (1) IT1261951B (it)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532903A1 (de) * 1995-09-07 1997-03-13 Teves Gmbh Alfred Lenkwinkelsensor mit Absolutwertmessung
DE19733885A1 (de) * 1997-08-05 1999-02-11 Horst Nahr Ges Fuer Elektronis Verfahren zum Messen von Wegen und Drehwinkeln an bewegten Gegenständen mit einer hartmagnetischen Oberfläche und Vorrichtung zur Durchführung des Verfahrens
JPH11160009A (ja) * 1997-10-31 1999-06-18 Samsung Heavy Ind Co Ltd ストロークセンシングシリンダの絶対位置検出方法
EP1056989B1 (de) 1998-02-21 2002-12-18 Dr. Johannes Heidenhain GmbH Verfahren zum betrieb eines positionsmesssystems und geeignetes positionsmesssystem hierzu
JP4174095B2 (ja) * 1998-03-31 2008-10-29 ソニーマニュファクチュアリングシステムズ株式会社 位置検出装置
JP3292709B2 (ja) 1999-07-01 2002-06-17 エスエムシー株式会社 計測機能付きエアチャック
JP2006525529A (ja) 2003-05-06 2006-11-09 エスアールアイ インターナショナル ピストンロッド位置情報をピストンロッド上の磁性層に記録するシステム及び方法
US7685891B2 (en) * 2003-12-30 2010-03-30 Nct Engineering Gmbh Magnetic principle based torque sensor
DE102004062278A1 (de) * 2004-12-23 2006-07-13 Siemens Ag Messelement und Messverfahren mit einer Spur zur Bestimmung einer Lage
US7259553B2 (en) 2005-04-13 2007-08-21 Sri International System and method of magnetically sensing position of a moving component
JP4214533B2 (ja) * 2006-08-10 2009-01-28 村田機械株式会社 移動体システム
JP4217918B2 (ja) * 2006-11-28 2009-02-04 村田機械株式会社 移動体システム
DE602008003809D1 (de) * 2008-09-10 2011-01-13 Fagor S Coop Optoelektronisches Messgerät
CN102301205B (zh) 2009-01-27 2014-07-09 瑞尼斯豪公司 磁性编码器装置
US8054068B2 (en) * 2009-02-22 2011-11-08 Hiwin Mikrosystem Corp. Magnetic absolute position sensor
CN101718516B (zh) * 2009-12-17 2011-08-24 西南交通大学 一种用于检测移动物体速度与位置的装置
JP2013519882A (ja) * 2010-02-11 2013-05-30 エスアールアイ インターナショナル 磁気符号化を用いた変位測定システム及び方法
DE102013105495A1 (de) * 2013-05-28 2014-12-04 Hamilton Bonaduz Ag Kolbenhubvorrichtung mit Messanordnung
NL2013123B1 (en) * 2014-07-04 2016-07-14 Stertil Bv Lifting device and system with integrated drive unit for lifting a vehicle, and method there for.
US9823092B2 (en) 2014-10-31 2017-11-21 Allegro Microsystems, Llc Magnetic field sensor providing a movement detector
CN109238119B (zh) * 2017-12-15 2019-06-14 重庆理工大学 一种基于交变电场的绝对式时栅直线位移传感器
US10989566B2 (en) 2018-04-09 2021-04-27 Infineon Technologies Ag Magnetic sensor system for measuring linear position
US10823586B2 (en) * 2018-12-26 2020-11-03 Allegro Microsystems, Llc Magnetic field sensor having unequally spaced magnetic field sensing elements
US11237020B2 (en) 2019-11-14 2022-02-01 Allegro Microsystems, Llc Magnetic field sensor having two rows of magnetic field sensing elements for measuring an angle of rotation of a magnet
US11280637B2 (en) 2019-11-14 2022-03-22 Allegro Microsystems, Llc High performance magnetic angle sensor
EP4375426A1 (en) * 2022-11-28 2024-05-29 Oilquick AB Tool holder for a machine with a positioning system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132337A (en) * 1960-09-12 1964-05-05 Ibm Variable reluctance slotted drum position indicating device
JP2554465B2 (ja) * 1985-08-09 1996-11-13 株式会社 エスジー アブソリユ−ト位置検出装置
DE3602292A1 (de) * 1986-01-25 1987-08-06 Audi Ag Geberanordnung
US4771237A (en) * 1986-02-19 1988-09-13 Panametrics Method and apparatus for calibrating a displacement probe using a polynomial equation to generate a displacement look-up table
DE8613887U1 (de) * 1986-05-22 1990-09-13 Dr. Johannes Heidenhain Gmbh, 83301 Traunreut Meßeinrichtung
JPS6395315A (ja) * 1986-10-13 1988-04-26 Hitachi Ltd 磁気的な位置検出装置
US4972332A (en) * 1987-07-28 1990-11-20 Caterpillar Inc. Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft
FR2650632B1 (fr) * 1989-08-03 1994-04-29 Renault Vehicules Ind Procede et dispositif de detection pour le pilotage d'injection electronique d'un moteur multicylindre
JP3029657B2 (ja) * 1990-09-28 2000-04-04 カヤバ工業株式会社 位置検出装置

Also Published As

Publication number Publication date
DE4344290C2 (de) 1995-07-20
ITRM930842A1 (it) 1995-06-22
US5497083A (en) 1996-03-05
KR940015460A (ko) 1994-07-21
DE4344290A1 (de) 1994-06-30
KR970007064B1 (ko) 1997-05-02
ITRM930842A0 (it) 1993-12-22

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