WO2009054391A1 - 磁気エンコーダ - Google Patents

磁気エンコーダ Download PDF

Info

Publication number
WO2009054391A1
WO2009054391A1 PCT/JP2008/069083 JP2008069083W WO2009054391A1 WO 2009054391 A1 WO2009054391 A1 WO 2009054391A1 JP 2008069083 W JP2008069083 W JP 2008069083W WO 2009054391 A1 WO2009054391 A1 WO 2009054391A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetoresistive effect
magnetic encoder
output waveform
effect element
effect elements
Prior art date
Application number
PCT/JP2008/069083
Other languages
English (en)
French (fr)
Inventor
Daisuke Tsuchiya
Ichiro Tokunaga
Original Assignee
Alps Electric 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
Application filed by Alps Electric Co., Ltd. filed Critical Alps Electric Co., Ltd.
Priority to JP2009538224A priority Critical patent/JPWO2009054391A1/ja
Publication of WO2009054391A1 publication Critical patent/WO2009054391A1/ja

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
    • 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
    • G01D5/24428—Error prevention
    • G01D5/24433—Error prevention by mechanical means
    • G01D5/24438—Special design of the sensing element or scale
    • 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
    • G01D5/24471—Error correction
    • G01D5/24476—Signal processing

Abstract

【課題】　特に、倍周波タイプの磁気エンコーダにおいて、磁気抵抗効果素子が磁石（磁界発生部材）の幅中心から幅方向にずれて配置されても、出力波形を自己補正でき、検知精度を向上させることが可能な磁気エンコーダを提供することを目的としている。 【解決手段】　第１磁気抵抗効果素子Ａ１～第８磁気抵抗効果素子Ａ８の８個の磁気抵抗効果素子にてＡ相のブリッジ回路が構成される。本発明の磁気抵抗効果素子の配置及び回路構成によれば、磁気抵抗効果素子が磁石の幅中心から幅方向にずれて配置されても出力波形が左右対称で、しかも等周期で出力波形が得られるように出力波形を自己補正でき、倍周波タイプの磁気エンコーダにおいて、従来に比べて、検知精度を向上させることが可能である。
PCT/JP2008/069083 2007-10-26 2008-10-22 磁気エンコーダ WO2009054391A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009538224A JPWO2009054391A1 (ja) 2007-10-26 2008-10-22 磁気エンコーダ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-279229 2007-10-26
JP2007279229 2007-10-26

Publications (1)

Publication Number Publication Date
WO2009054391A1 true WO2009054391A1 (ja) 2009-04-30

Family

ID=40579495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/069083 WO2009054391A1 (ja) 2007-10-26 2008-10-22 磁気エンコーダ

Country Status (2)

Country Link
JP (1) JPWO2009054391A1 (ja)
WO (1) WO2009054391A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013161027A1 (ja) * 2012-04-26 2013-10-31 三菱電機株式会社 磁気式位置検出装置
JP2016095208A (ja) * 2014-11-13 2016-05-26 日本精工株式会社 磁気検出装置
US9772198B2 (en) 2013-01-10 2017-09-26 Murata Machinery, Ltd. Displacement sensor and displacement detection method
EP3385680A1 (en) * 2014-03-10 2018-10-10 DMG Mori Seiki Co. Ltd. Position detecting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06261523A (ja) * 1993-03-08 1994-09-16 Sony Corp 回転検出装置
JPH08122095A (ja) * 1994-10-25 1996-05-17 Sony Magnescale Inc 位置検出装置
JP2007155417A (ja) * 2005-12-02 2007-06-21 Hitachi Metals Ltd 磁気エンコーダー

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06261523A (ja) * 1993-03-08 1994-09-16 Sony Corp 回転検出装置
JPH08122095A (ja) * 1994-10-25 1996-05-17 Sony Magnescale Inc 位置検出装置
JP2007155417A (ja) * 2005-12-02 2007-06-21 Hitachi Metals Ltd 磁気エンコーダー

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013161027A1 (ja) * 2012-04-26 2013-10-31 三菱電機株式会社 磁気式位置検出装置
CN104246445A (zh) * 2012-04-26 2014-12-24 三菱电机株式会社 磁式位置检测装置
JP5752322B2 (ja) * 2012-04-26 2015-07-22 三菱電機株式会社 磁気式位置検出装置
CN104246445B (zh) * 2012-04-26 2016-04-13 三菱电机株式会社 磁式位置检测装置
DE112012006270B4 (de) * 2012-04-26 2019-05-09 Mitsubishi Electric Corporation Magnetpositions-Erfassungsvorrichtung
US9772198B2 (en) 2013-01-10 2017-09-26 Murata Machinery, Ltd. Displacement sensor and displacement detection method
EP3385680A1 (en) * 2014-03-10 2018-10-10 DMG Mori Seiki Co. Ltd. Position detecting device
JP2016095208A (ja) * 2014-11-13 2016-05-26 日本精工株式会社 磁気検出装置

Also Published As

Publication number Publication date
JPWO2009054391A1 (ja) 2011-03-03

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