JP6190157B2 - 回転角度検出器 - Google Patents
回転角度検出器 Download PDFInfo
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- JP6190157B2 JP6190157B2 JP2013103755A JP2013103755A JP6190157B2 JP 6190157 B2 JP6190157 B2 JP 6190157B2 JP 2013103755 A JP2013103755 A JP 2013103755A JP 2013103755 A JP2013103755 A JP 2013103755A JP 6190157 B2 JP6190157 B2 JP 6190157B2
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- magnet
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- rotation angle
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- angle detector
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- 230000004907 flux Effects 0.000 claims description 64
- 238000001514 detection method Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
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- 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
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
(2)磁気センサ4を磁石2と磁性体6とで挟むことにより、磁気収束効果により磁気センサ4の周辺部の磁束密度が高められ、その結果、磁気センサ4の出力のS/N比が向上し、回転角度の検出精度が高められる。
図1に示した回転角度検出器100では、磁性体6Aを平板状の磁性体とし、この平板状の磁性体を加工して、その中央部に磁石2側に突出した凸部6aを形成し、その凸部6aの頂部を丸い山状としている。
図4に磁性体6Aの凸部6aの頂部を磁石2の対向する面2aと平行な円形の平面とした場合のX方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。図5に磁性体6の凸部6aの頂部を丸い山状とした場合のX方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。図6に磁性体6の凸部6aの頂部を鋭い山状とした場合のX方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。
図8に磁性体6Aの凸部6aの頂部を磁石2の対向する面2aと平行な円形の平面とした場合のY方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。図9に磁性体6の凸部6aの頂部を丸い山状とした場合のY方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。図10に磁性体6の凸部6aの頂部を鋭い山状とした場合のY方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。
図12に磁性体6Aの凸部6aの高さを変えた場合のX方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。図13に磁性体6Aの凸部6aの高さを変えた場合のY方向への軸ずれ時の磁気センサ4の中心の磁束密度変化を示す。なお、図12,図13において、磁性体6Aは、その凸部6aの頂部を磁石2の対向する面2aと平行な円形の平面としたものとしている。
以上、実施の形態を参照して本発明を説明したが、本発明は上記の実施の形態に限定されるものではない。本発明の構成や詳細には、本発明の技術思想の範囲内で当業者が理解し得る様々な変更をすることができる。
Claims (3)
- 回転軸と、この回転軸の軸心を中心として回転する径方向に着磁された磁石と、この磁石の径方向に対して直交する方向をその磁石の厚み方向とし,この磁石の厚み方向の一方の面にその感磁面を平行に対向させて,かつその感磁面の中心を前記磁石の回転中心と一致させるようにして配置され,前記感磁面に作用する磁束密度の変化を検出する磁気センサとを備え、前記磁気センサが検出する磁束密度の変化から検出対象の回転角度を検出する回転角度検出器において、
前記磁気センサを基点として前記磁石と反対側に配置され、前記磁気センサを挟んで前記磁石の一方の面に対向する面の中央部に、前記磁石側に突出した凸部を有する磁性体を備え、
前記磁石は、その平面形状が円形とされ、
前記凸部は、その頂部が前記磁石の一方の面と平行な円形の平面とされ、
前記磁石および前記凸部の頂部は、その平面形状の円形の径が等しくされている
ことを特徴とする回転角度検出器。 - 請求項1に記載された回転角度検出器において、
前記磁性体は、前記凸部が一体的に形成された磁性体である
ことを特徴とする回転角度検出器。 - 請求項1に記載された回転角度検出器において、
前記磁性体は、前記凸部が別体として接合された磁性体である
ことを特徴とする回転角度検出器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013103755A JP6190157B2 (ja) | 2013-05-16 | 2013-05-16 | 回転角度検出器 |
KR1020140055480A KR101537903B1 (ko) | 2013-05-16 | 2014-05-09 | 회전 각도 검출기 |
CN201410206367.9A CN104165579B (zh) | 2013-05-16 | 2014-05-15 | 旋转角度检测器 |
Applications Claiming Priority (1)
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---|---|---|---|
JP2013103755A JP6190157B2 (ja) | 2013-05-16 | 2013-05-16 | 回転角度検出器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014224737A JP2014224737A (ja) | 2014-12-04 |
JP6190157B2 true JP6190157B2 (ja) | 2017-08-30 |
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JP2013103755A Expired - Fee Related JP6190157B2 (ja) | 2013-05-16 | 2013-05-16 | 回転角度検出器 |
Country Status (3)
Country | Link |
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JP (1) | JP6190157B2 (ja) |
KR (1) | KR101537903B1 (ja) |
CN (1) | CN104165579B (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017000850A1 (de) * | 2017-01-31 | 2018-08-02 | Thyssenkrupp Ag | Sensoreinrichtung zur Erfassung der Drehlage einer sich drehenden Welle mit ultraschallverschweißtem Gebermagneten |
EP3640579B1 (en) * | 2017-06-15 | 2022-12-28 | Alps Alpine Co., Ltd. | Rotation detection device |
JP7192317B2 (ja) * | 2018-09-03 | 2022-12-20 | 富士電機株式会社 | エンコーダ |
CN110132472B (zh) * | 2019-05-16 | 2020-09-18 | 大同煤矿集团有限责任公司 | 冲击地压监控传感器以及冲击地压用监控装置 |
JP7272289B2 (ja) * | 2020-01-23 | 2023-05-12 | 株式会社デンソー | 磁石ホルダ |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58112915U (ja) * | 1982-01-27 | 1983-08-02 | 日本電気ホームエレクトロニクス株式会社 | 回転角検出装置 |
JPH02298815A (ja) * | 1989-05-13 | 1990-12-11 | Aisan Ind Co Ltd | 回転角度センサ |
JPH02298814A (ja) * | 1989-05-13 | 1990-12-11 | Aisan Ind Co Ltd | 回転角度センサ |
JP3086563B2 (ja) * | 1993-02-27 | 2000-09-11 | 愛三工業株式会社 | 回転角度センサ |
JPH08193802A (ja) * | 1995-01-13 | 1996-07-30 | Murata Mfg Co Ltd | 無接触型ポテンショメータ |
JP2001066106A (ja) * | 1999-08-26 | 2001-03-16 | Asmo Co Ltd | 回転センサ |
JP2004257894A (ja) * | 2003-02-26 | 2004-09-16 | Hitachi Unisia Automotive Ltd | 回動角検出装置 |
JP4385911B2 (ja) * | 2004-09-28 | 2009-12-16 | 株式会社デンソー | 回転角度検出装置 |
JP3848670B1 (ja) * | 2005-07-20 | 2006-11-22 | 株式会社トーメンエレクトロニクス | 回転角度検出装置 |
JP4729358B2 (ja) * | 2005-08-03 | 2011-07-20 | 旭化成エレクトロニクス株式会社 | 回転角度センサ |
JP2007085889A (ja) * | 2005-09-22 | 2007-04-05 | Ntn Corp | 回転検出装置付き軸受 |
JP5301864B2 (ja) * | 2008-03-31 | 2013-09-25 | 株式会社ミクニ | 回転位置センサ |
KR20100050670A (ko) * | 2008-11-06 | 2010-05-14 | 한국오므론전장주식회사 | 자성체를 구비하는 회전 각도 센서 |
JP5069210B2 (ja) * | 2008-12-15 | 2012-11-07 | 東京コスモス電機株式会社 | 回転角度センサ |
CN102564293A (zh) * | 2010-12-31 | 2012-07-11 | 上海派芬自动控制技术有限公司 | 非接触式角度传感器 |
-
2013
- 2013-05-16 JP JP2013103755A patent/JP6190157B2/ja not_active Expired - Fee Related
-
2014
- 2014-05-09 KR KR1020140055480A patent/KR101537903B1/ko active IP Right Grant
- 2014-05-15 CN CN201410206367.9A patent/CN104165579B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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KR20140135624A (ko) | 2014-11-26 |
JP2014224737A (ja) | 2014-12-04 |
KR101537903B1 (ko) | 2015-07-17 |
CN104165579A (zh) | 2014-11-26 |
CN104165579B (zh) | 2017-01-11 |
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