WO2008129872A1 - Détecteur de rotation, et palier avec détecteur de rotation - Google Patents

Détecteur de rotation, et palier avec détecteur de rotation Download PDF

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Publication number
WO2008129872A1
WO2008129872A1 PCT/JP2008/000937 JP2008000937W WO2008129872A1 WO 2008129872 A1 WO2008129872 A1 WO 2008129872A1 JP 2008000937 W JP2008000937 W JP 2008000937W WO 2008129872 A1 WO2008129872 A1 WO 2008129872A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
rotation detector
encoders
phase difference
sensors
Prior art date
Application number
PCT/JP2008/000937
Other languages
English (en)
Japanese (ja)
Inventor
Shintarou Ueno
Toru Takahashi
Original Assignee
Ntn Corporation
S.N.R.Roulements S.A.
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 JP2007108276A external-priority patent/JP2008267868A/ja
Priority claimed from JP2007108275A external-priority patent/JP2008267867A/ja
Application filed by Ntn Corporation, S.N.R.Roulements S.A. filed Critical Ntn Corporation
Publication of WO2008129872A1 publication Critical patent/WO2008129872A1/fr

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
    • G01D5/14—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • 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
    • G01D5/2451—Incremental encoders
    • 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
    • G01D5/249—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 pulse code
    • G01D5/2497—Absolute encoders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

Cette invention se rapporte à un détecteur de rotation présentant une structure simple et capable de détecter de manière précise un angle absolu avec une résolution élevée, et à un palier équipé du détecteur de rotation. Le détecteur de rotation (1) comprend : deux encodeurs magnétiques (2A, 2B) qui ont la forme d'anneaux coaxiaux, et qui comportent des configurations de chaîne magnétique (2Aa, 2Ba) présentant des nombres de pôles magnétiques mutuellement différents, ces pôles magnétiques étant agencés sur la périphérie de chaque encodeur magnétique ; et des capteurs magnétiques (3A, 3B) détectant chacun le champ magnétique de chacun des encodeurs magnétiques (2A, 2B). Les capteurs magnétiques respectifs (3A, 3B) présentent une fonction consistant à détecter des informations sur les positions des encodeurs magnétiques (2A, 2B) dans les pôles magnétiques. Le détecteur de rotation (1) comprend des moyens de détection de différence de phase (6) qui obtiennent la différence de phase entre des signaux de champ magnétique détectés par les capteurs magnétiques respectifs (3A, 3B) et des moyens de calcul d'angle (7) qui calculent les angles absolus des encodeurs magnétiques en fonction de la différence de phase détectée. Un espace (12) est présent entre les configurations de chaîne magnétique (2Aa, 2Ba) des deux encodeurs magnétiques (2A, 2B).
PCT/JP2008/000937 2007-04-17 2008-04-10 Détecteur de rotation, et palier avec détecteur de rotation WO2008129872A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007108276A JP2008267868A (ja) 2007-04-17 2007-04-17 回転検出装置および回転検出装置付き軸受
JP2007-108276 2007-04-17
JP2007108275A JP2008267867A (ja) 2007-04-17 2007-04-17 回転検出装置および回転検出装置付き軸受
JP2007-108275 2007-04-17

Publications (1)

Publication Number Publication Date
WO2008129872A1 true WO2008129872A1 (fr) 2008-10-30

Family

ID=39875402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000937 WO2008129872A1 (fr) 2007-04-17 2008-04-10 Détecteur de rotation, et palier avec détecteur de rotation

Country Status (1)

Country Link
WO (1) WO2008129872A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2336729A1 (fr) * 2008-09-11 2011-06-22 NTN Corporation Dispositif de détection de rotation et roulement avec dispositif de détection de rotation
CN102933940A (zh) * 2010-06-03 2013-02-13 Ntn株式会社 磁性编码器
EP2649349A1 (fr) * 2010-12-10 2013-10-16 Aktiebolaget SKF Rondelle encodeur et ensemble roulement comprenant une telle rondelle
WO2015081981A1 (fr) * 2013-12-02 2015-06-11 Aktiebolaget Skf Rondelle de codeur et ensemble comportant une telle rondelle
CN109910061A (zh) * 2019-03-13 2019-06-21 北京金钢科技有限公司 分离式磁双编码器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0658766A (ja) * 1992-08-05 1994-03-04 Hitachi Ltd 絶対位置検出装置およびモ−タ制御装置
JPH09311053A (ja) * 1996-03-19 1997-12-02 Yazaki Corp 回転センサ
JP2002541485A (ja) * 1999-04-14 2002-12-03 エス．エヌ．エール．ルールマン コーダから生ずる磁気パルスを検出するための整列された複数の検知要素を有する素子を備えた軸受要素
JP2005156499A (ja) * 2003-11-28 2005-06-16 Ntn Corp 多回転絶対位置検出装置。
JP2006177897A (ja) * 2004-12-24 2006-07-06 Ntn Corp 回転速度検出装置付き車輪用軸受装置
JP2006330004A (ja) * 2006-09-01 2006-12-07 Ntn Corp 磁気エンコーダおよびそれを備えた車輪用軸受

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0658766A (ja) * 1992-08-05 1994-03-04 Hitachi Ltd 絶対位置検出装置およびモ−タ制御装置
JPH09311053A (ja) * 1996-03-19 1997-12-02 Yazaki Corp 回転センサ
JP2002541485A (ja) * 1999-04-14 2002-12-03 エス．エヌ．エール．ルールマン コーダから生ずる磁気パルスを検出するための整列された複数の検知要素を有する素子を備えた軸受要素
JP2005156499A (ja) * 2003-11-28 2005-06-16 Ntn Corp 多回転絶対位置検出装置。
JP2006177897A (ja) * 2004-12-24 2006-07-06 Ntn Corp 回転速度検出装置付き車輪用軸受装置
JP2006330004A (ja) * 2006-09-01 2006-12-07 Ntn Corp 磁気エンコーダおよびそれを備えた車輪用軸受

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2336729A1 (fr) * 2008-09-11 2011-06-22 NTN Corporation Dispositif de détection de rotation et roulement avec dispositif de détection de rotation
EP2336729A4 (fr) * 2008-09-11 2012-02-29 Ntn Toyo Bearing Co Ltd Dispositif de détection de rotation et roulement avec dispositif de détection de rotation
EP2778624A1 (fr) * 2008-09-11 2014-09-17 NTN Corporation Dispositif de détection de rotation et palier avec dispositif de détection de rotation
CN102933940A (zh) * 2010-06-03 2013-02-13 Ntn株式会社 磁性编码器
CN102933940B (zh) * 2010-06-03 2015-07-08 Ntn株式会社 磁性编码器
US9250102B2 (en) 2010-06-03 2016-02-02 Ntn Corporation Magnetic encoder
EP2649349A1 (fr) * 2010-12-10 2013-10-16 Aktiebolaget SKF Rondelle encodeur et ensemble roulement comprenant une telle rondelle
WO2015081981A1 (fr) * 2013-12-02 2015-06-11 Aktiebolaget Skf Rondelle de codeur et ensemble comportant une telle rondelle
CN109910061A (zh) * 2019-03-13 2019-06-21 北京金钢科技有限公司 分离式磁双编码器

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