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WO2009038161A1 - 原点検出装置 - Google Patents

原点検出装置 Download PDF

Info

Publication number
WO2009038161A1
WO2009038161A1 PCT/JP2008/066959 JP2008066959W WO2009038161A1 WO 2009038161 A1 WO2009038161 A1 WO 2009038161A1 JP 2008066959 W JP2008066959 W JP 2008066959W WO 2009038161 A1 WO2009038161 A1 WO 2009038161A1
Authority
WO
WIPO (PCT)
Prior art keywords
origin
differential output
free magnetic
detection device
magneto
Prior art date
Application number
PCT/JP2008/066959
Other languages
English (en)
French (fr)
Inventor
Masahiko Sato
Yoshito Sasaki
Takafumi Noguchi
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.
Publication of WO2009038161A1 publication Critical patent/WO2009038161A1/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
    • G01D5/244—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

【課題】　特に、固定磁性層及びフリー磁性層を有する磁気抵抗効果素子を用いて、従来に比べて高精度に原点検出を行えるようにした原点検出装置を提供することを目的としている。 【解決手段】　磁石１の中心１ｃが原点Ｐにあるとき、各磁気抵抗効果素子のフリー磁性層には水平磁場成分Ｈ１が作用するためフリー磁性層をその水平磁場方向に向かせることができ、磁化を安定化でき、ヒステリシスを十分に小さくでき、高精度な原点検出を行うことができる。そして前記磁石１の中心１ｃが、原点Ｐに位置したとき、差動出力がゼロになり、それ以外の時には差動出力が生じているため、差動出力の有無の判断により、原点検出を行うことができ、基準電圧設定回路が必要でない等、簡単な回路構成で、高精度な原点検出を行うことが可能である。
PCT/JP2008/066959 2007-09-20 2008-09-19 原点検出装置 WO2009038161A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-243933 2007-09-20
JP2007243933A JP2010286236A (ja) 2007-09-20 2007-09-20 原点検出装置

Publications (1)

Publication Number Publication Date
WO2009038161A1 true WO2009038161A1 (ja) 2009-03-26

Family

ID=40467970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066959 WO2009038161A1 (ja) 2007-09-20 2008-09-19 原点検出装置

Country Status (2)

Country Link
JP (1) JP2010286236A (ja)
WO (1) WO2009038161A1 (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9034865B2 (en) 2010-02-18 2015-05-19 Medivation Technologies, Inc. Pyrido [4,3-B] indole and pyrido [3,4-B] indole derivatives and methods of use
US9040519B2 (en) 2010-02-18 2015-05-26 Medivation Technologies, Inc. Fused tetracyclic pyrido [4,3-B] indole and pyrido [3,4-B] indole derivatives and methods of use
US9193728B2 (en) 2010-02-18 2015-11-24 Medivation Technologies, Inc. Fused tetracyclic pyrido [4,3-B] indole and pyrido [3,4-B] indole derivatives and methods of use
US9434747B2 (en) 2011-02-18 2016-09-06 Medivation Technologies, Inc. Methods of treating diabetes
CN107037381A (zh) * 2015-12-29 2017-08-11 爱盛科技股份有限公司 磁场感测装置及其感测方法
WO2018193961A1 (ja) * 2017-04-18 2018-10-25 アルプス電気株式会社 回転角度検出装置
DE112014003316B4 (de) 2013-07-17 2019-07-11 Denso Corporation Rotationssensor
CN111656208A (zh) * 2018-03-22 2020-09-11 株式会社东海理化电机制作所 磁传感器
CN113960508A (zh) * 2020-07-21 2022-01-21 Tdk株式会社 磁传感器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6986002B2 (ja) * 2018-11-26 2021-12-22 Tdk株式会社 磁気センサ装置
CN109975861B (zh) * 2019-04-18 2024-05-31 国仪量子(合肥)技术有限公司 磁谱仪磁铁调试装置和光探测磁共振磁谱仪
JP7339088B2 (ja) * 2019-09-13 2023-09-05 ニデックインスツルメンツ株式会社 振れ補正機能付き光学ユニット及びその検査方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05175483A (ja) * 1991-12-24 1993-07-13 Asahi Chem Ind Co Ltd 位置センサー
JP2006153720A (ja) * 2004-11-30 2006-06-15 Tdk Corp 回転角度検出装置
JP2007220367A (ja) * 2006-02-14 2007-08-30 Alps Electric Co Ltd 磁気スイッチ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05175483A (ja) * 1991-12-24 1993-07-13 Asahi Chem Ind Co Ltd 位置センサー
JP2006153720A (ja) * 2004-11-30 2006-06-15 Tdk Corp 回転角度検出装置
JP2007220367A (ja) * 2006-02-14 2007-08-30 Alps Electric Co Ltd 磁気スイッチ

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9034865B2 (en) 2010-02-18 2015-05-19 Medivation Technologies, Inc. Pyrido [4,3-B] indole and pyrido [3,4-B] indole derivatives and methods of use
US9040519B2 (en) 2010-02-18 2015-05-26 Medivation Technologies, Inc. Fused tetracyclic pyrido [4,3-B] indole and pyrido [3,4-B] indole derivatives and methods of use
US9193728B2 (en) 2010-02-18 2015-11-24 Medivation Technologies, Inc. Fused tetracyclic pyrido [4,3-B] indole and pyrido [3,4-B] indole derivatives and methods of use
US9433626B2 (en) 2010-02-18 2016-09-06 Medivation Technologies, Inc. Pyrido[4,3-B]indole and pyrido[3,4-B]indole derivatives and methods of use
US9434747B2 (en) 2011-02-18 2016-09-06 Medivation Technologies, Inc. Methods of treating diabetes
DE112014003316B4 (de) 2013-07-17 2019-07-11 Denso Corporation Rotationssensor
CN107037381A (zh) * 2015-12-29 2017-08-11 爱盛科技股份有限公司 磁场感测装置及其感测方法
WO2018193961A1 (ja) * 2017-04-18 2018-10-25 アルプス電気株式会社 回転角度検出装置
CN111656208A (zh) * 2018-03-22 2020-09-11 株式会社东海理化电机制作所 磁传感器
CN113960508A (zh) * 2020-07-21 2022-01-21 Tdk株式会社 磁传感器
CN113960508B (zh) * 2020-07-21 2024-05-24 Tdk株式会社 磁传感器

Also Published As

Publication number Publication date
JP2010286236A (ja) 2010-12-24

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