IT1261950B - Dispositivo rivelatore di posizione assiale di aste, in particolare steli di pistoni. - Google Patents

Dispositivo rivelatore di posizione assiale di aste, in particolare steli di pistoni.

Info

Publication number
IT1261950B
IT1261950B ITRM930841A ITRM930841A IT1261950B IT 1261950 B IT1261950 B IT 1261950B IT RM930841 A ITRM930841 A IT RM930841A IT RM930841 A ITRM930841 A IT RM930841A IT 1261950 B IT1261950 B IT 1261950B
Authority
IT
Italy
Prior art keywords
magnetic
parts
auctions
magnetic parts
axial position
Prior art date
Application number
ITRM930841A
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 JP34490192A external-priority patent/JP3226124B2/ja
Priority claimed from JP5000831A external-priority patent/JPH06201400A/ja
Priority claimed from JP11314493A external-priority patent/JP3217895B2/ja
Priority claimed from JP11615193A external-priority patent/JP3188041B2/ja
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Publication of ITRM930841A0 publication Critical patent/ITRM930841A0/it
Publication of ITRM930841A1 publication Critical patent/ITRM930841A1/it
Application granted granted Critical
Publication of IT1261950B publication Critical patent/IT1261950B/it

Links

Classifications

    • 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
    • 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
    • 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
    • G01D5/145—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 influenced by the relative movement between the Hall device and magnetic fields

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (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 scala magnetica è formata da una pluralità di parti non magnetiche disposte ad intervalli equidistanti in una direzione assiale su un'asta magnetica che si sposta in direzione assiale. Le parti non magnetiche consistono di prime parti non magnetiche aventi una profondità costante e di seconde parti non magnetiche aventi una diversa profondità. Un sensore magnetico che emette in uscita un segnale in conformità con la variazione di profondità e di posizione delle parti non magnetiche è installato in posizione fissa opposta alla scala magnetica. Sono inoltre forniti un meccanismo per identificare una seconda parte non magnetica che è passata attraverso il sensore magnetico, sulla base dell'uscita del sensore, una memoria per memorizzare individualmente le posizioni assolute delle seconde parti non magnetiche ed un meccanismo per calcolare lo spostamento dell'asta dalla seconda parte non magnetica identificata fino alla sua posizione corrente, sulla base dell'uscita del sensore
ITRM930841A 1992-12-24 1993-12-22 Dispositivo rivelatore di posizione assiale di aste, in particolare steli di pistoni. IT1261950B (it)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP34490192A JP3226124B2 (ja) 1992-12-24 1992-12-24 位置検出装置
JP5000831A JPH06201400A (ja) 1993-01-06 1993-01-06 位置検出装置
JP11314493A JP3217895B2 (ja) 1993-05-14 1993-05-14 位置検出装置
JP11615193A JP3188041B2 (ja) 1993-05-18 1993-05-18 位置検出装置

Publications (3)

Publication Number Publication Date
ITRM930841A0 ITRM930841A0 (it) 1993-12-22
ITRM930841A1 ITRM930841A1 (it) 1995-06-22
IT1261950B true IT1261950B (it) 1996-06-04

Family

ID=27453254

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930841A IT1261950B (it) 1992-12-24 1993-12-22 Dispositivo rivelatore di posizione assiale di aste, in particolare steli di pistoni.

Country Status (4)

Country Link
US (1) US5461311A (it)
KR (1) KR970003620B1 (it)
DE (1) DE4344291C2 (it)
IT (1) IT1261950B (it)

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DE19547686A1 (de) * 1995-12-20 1997-06-26 Indramat Gmbh Elektrischer Synchron-Linearmotor und Verfahren zur Ermittlung des Kommutierungsoffsets eines Linearantriebs mit einem solchen elektrischen Synchron-Linearmotor
EP0810420A3 (de) * 1996-05-29 1998-04-15 Vibro-Meter AG Positionsmesssystem
DE69725814T2 (de) * 1996-08-23 2004-09-23 Canon Denshi K.K., Chichibu Verfahren und Vorrichtung zur Feststellung der Drehung von Rädern
JP3531375B2 (ja) * 1996-09-03 2004-05-31 ソニー・プレシジョン・テクノロジー株式会社 変位量検出装置
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
WO1999042790A1 (de) 1998-02-21 1999-08-26 Dr. Johannes Heidenhain Gmbh Verfahren zum betrieb eines positionsmesssystems und geeignete positionsmesssystem hierzu
US6404188B1 (en) * 1998-03-19 2002-06-11 Honeywell Inc Single geartooth sensor yielding multiple output pulse trains
JP4239042B2 (ja) * 1998-06-19 2009-03-18 株式会社安川電機 ２次元アブソリュート位置センサおよびロボット
US6321590B1 (en) * 1999-07-19 2001-11-27 Kayaba Industry Co., Ltd. Leakage measuring device
DE10318692A1 (de) * 2003-04-24 2004-11-25 Siko Gmbh Dr.-Ing. G. Wandres Verfahren und Positionserfassung eines sich bewegenden Elementes
CA2524264A1 (en) 2003-05-06 2004-11-18 Sri International Systems and methods of recording piston rod position information in a magnetic layer on a piston rod
JP4586800B2 (ja) * 2004-07-12 2010-11-24 Ｎｏｋ株式会社 磁気エンコーダ
GB2429757B (en) * 2004-07-14 2009-07-29 Tenneco Automotive Operating Shock absorber with integrated displacement sensor
US7259553B2 (en) 2005-04-13 2007-08-21 Sri International System and method of magnetically sensing position of a moving component
DE102005031333A1 (de) * 2005-07-05 2007-01-11 Zf Friedrichshafen Ag Positionsdetektion an einer Stange
WO2008157498A1 (en) 2007-06-15 2008-12-24 Shell Oil Company Methods and systems for predicting equipment operation
DE102008020455A1 (de) * 2008-04-23 2009-10-29 Carl Freudenberg Kg Magnetischer Encoder
EP2391869B1 (en) * 2009-01-27 2021-08-18 Renishaw PLC Magnetic encoder apparatus
ATE538317T1 (de) * 2009-03-06 2012-01-15 Sick Stegmann Gmbh Vorrichtung zur messung der axialen position einer kolbenstange bezüglich eines zylindergehäuses
EP2534448A4 (en) * 2010-02-11 2014-09-10 Kurt D Fulkerson WAY MEASURING SYSTEM AND METHOD THROUGH MAGNETIC ENCODING
US8957675B2 (en) 2010-03-03 2015-02-17 Jtekt Corporation Rotation angle detection device
US9518844B2 (en) 2010-04-16 2016-12-13 Jtekt Corporation Rotation angle detection device compromising
US8456114B2 (en) 2010-05-27 2013-06-04 Hamilton Sundstrand Corporation Motor bus voltage commutation method
DE102011078717A1 (de) * 2011-07-06 2013-01-10 Continental Teves Ag & Co. Ohg Einrichtung zur Messung von Winkel und Winkelgeschwindigkeit oder Weg und Geschwindigkeit
CN106104211B (zh) * 2014-03-14 2018-11-13 三菱电机株式会社 磁力式位置检测装置、磁力式位置检测方法
US11344220B2 (en) 2016-05-13 2022-05-31 Becton, Dickinson And Company Invasive medical device cover with magnet
US10327667B2 (en) 2016-05-13 2019-06-25 Becton, Dickinson And Company Electro-magnetic needle catheter insertion system
US11116419B2 (en) * 2016-06-01 2021-09-14 Becton, Dickinson And Company Invasive medical devices including magnetic region and systems and methods
US20170347914A1 (en) 2016-06-01 2017-12-07 Becton, Dickinson And Company Invasive Medical Devices Including Magnetic Region And Systems And Methods
US11826522B2 (en) 2016-06-01 2023-11-28 Becton, Dickinson And Company Medical devices, systems and methods utilizing permanent magnet and magnetizable feature
US11413429B2 (en) 2016-06-01 2022-08-16 Becton, Dickinson And Company Medical devices, systems and methods utilizing permanent magnet and magnetizable feature
US10032552B2 (en) 2016-08-30 2018-07-24 Becton, Dickinson And Company Cover for tissue penetrating device with integrated magnets and magnetic shielding
EP3855257A1 (de) * 2020-01-22 2021-07-28 Siemens Aktiengesellschaft Verfahren zur überwachung einer fehlersicheren funktion von sensoren in einem motor

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US3132337A (en) * 1960-09-12 1964-05-05 Ibm Variable reluctance slotted drum position indicating device
IT1043269B (it) * 1975-10-10 1980-02-20 Magneti Marelli Spa Sistema di inviduazione di una pluralita di posizioni angolaridi un organo rotante
US4142153A (en) * 1977-02-17 1979-02-27 Sperry Rand Corporation Tachometer for measuring speed and direction of shaft rotation with a single sensing element
JPS54163061A (en) * 1978-06-15 1979-12-25 Nippon Denso Co Revolution positional detector
DE3486351T2 (de) * 1983-07-27 1995-02-16 Sony Magnescale Inc Detektorkopf.
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
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
DE3617254A1 (de) * 1986-05-22 1987-11-26 Heidenhain Gmbh Dr Johannes Messeinrichtung
US4851771A (en) * 1987-02-24 1989-07-25 Kabushiki Kaisha Yaskawa Denki Seisakusho Magnetic encoder for detection of incremental and absolute value displacement
JPH01502452A (ja) * 1987-02-24 1989-08-24 レニショウ パブリック リミテッド カンパニー 位置決め装置用スケール
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
JP3029657B2 (ja) * 1990-09-28 2000-04-04 カヤバ工業株式会社 位置検出装置
JPH086259Y2 (ja) * 1990-10-30 1996-02-21 株式会社小松製作所 直線位置検出装置

Also Published As

Publication number Publication date
KR940015329A (ko) 1994-07-20
DE4344291C2 (de) 1996-05-09
ITRM930841A0 (it) 1993-12-22
KR970003620B1 (ko) 1997-03-20
US5461311A (en) 1995-10-24
ITRM930841A1 (it) 1995-06-22
DE4344291A1 (de) 1994-06-30

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