JP2003121107A5 - - Google Patents

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JP2003121107A5
JP2003121107A5 JP2001313083A JP2001313083A JP2003121107A5 JP 2003121107 A5 JP2003121107 A5 JP 2003121107A5 JP 2001313083 A JP2001313083 A JP 2001313083A JP 2001313083 A JP2001313083 A JP 2001313083A JP 2003121107 A5 JP2003121107 A5 JP 2003121107A5
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coil
rotational position
rotation
impedance
coil portion
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JP2001313083A
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JP4336070B2 (en
JP2003121107A (en
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Priority claimed from JP2001313083A external-priority patent/JP4336070B2/en
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Publication of JP2003121107A5 publication Critical patent/JP2003121107A5/ja
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Claims (5)

交流信号で励磁される少なくとも１対のコイルを所定の一部の回転角度範囲にわたって配置してなるコイル部であって、１対のコイルにおける各コイルは所定の回転角に対応する間隔で離隔されて配置されており、
前記コイル部に対して相対的に回転変位するよう配置された磁気応答部材であって、検出対象の回転に応じて該部材と前記コイル部との相対的回転位置が変化し、この相対的回転位置に応じて前記コイルのインピーダンスを変化させ、このインピーダンス変化に基づき前記相対的回転位置が所定の回転角範囲にわたって変化する間で前記コイルに生じる電圧が増減変化するようにし、１対のコイルにおける各コイルの電圧の増減変化が差動的な特性を示すようにしたものであり、１回転において複数周期分の前記インピーダンス変化を生じさせるような形状からなるものと、
前記１対のコイルにおける各コイルに生じる電圧の差をそれぞれ取り出し、所定の周期的振幅関数を振幅係数として持つ交流出力信号を各コイル毎に生成する回路であって、前記各交流出力信号の前記周期的振幅関数はその周期特性において所定位相だけ異なっているものと
を具えた回転型位置検出装置。A coil unit in which at least one pair of coils excited by an AC signal is arranged over a predetermined part of a rotation angle range, and each coil in the pair of coils is separated at intervals corresponding to a predetermined rotation angle. Arranged,
A magnetic response member arranged so as to be rotationally displaced relative to the coil part, wherein the relative rotational position of the member and the coil part changes according to the rotation of the detection target, and this relative rotation The impedance of the coil is changed according to the position, and the voltage generated in the coil is increased or decreased while the relative rotational position changes over a predetermined rotation angle range based on the impedance change. The increase / decrease change of the voltage of each coil shows a differential characteristic, and it has a shape that causes the impedance change for a plurality of cycles in one rotation,
A circuit for taking out a difference in voltage generated in each coil in the pair of coils and generating an AC output signal having a predetermined periodic amplitude function as an amplitude coefficient for each coil, A rotational position detecting device having a periodic amplitude function that differs in a periodic characteristic by a predetermined phase. 前記コイル対は２対設けられており、
前記回路は、各々のコイル対からサイン関数を振幅係数として持つ交流出力信号とコサイン関数を振幅係数として持つ交流出力信号とを生成することを特徴とする請求項１に記載の回転型位置検出装置。Two pairs of the coil pairs are provided,
The rotary position detecting device according to claim 1, wherein the circuit generates an AC output signal having a sine function as an amplitude coefficient and an AC output signal having a cosine function as an amplitude coefficient from each coil pair. . 前記コイル部の周囲に、該コイル部に対する外部からの磁気を遮蔽するための磁気シールド部材を設けたことを特徴とする請求項１に記載の回転位置検出装置。  The rotational position detection device according to claim 1, wherein a magnetic shield member for shielding magnetism from the outside to the coil portion is provided around the coil portion. 磁性体からなる検出対象回転軸に取り付けられる磁気応答部材からなる所定形状のロータ部と、交流信号によって励磁されるコイル部を備えたステータとを具備し、前記回転軸の回転に応じて前記磁気応答部材と前記コイル部との相対的回転位置が変化し、この相対的回転位置の変化に応じて前記コイル部のインピーダンスを変化させ、このインピーダンス変化に応じた出力信号を生成するようにした回転位置検出装置において、
前記ロータ部を前記回転軸に固定する接合部において磁気シールド部材を設け、該回転軸を通って前記ロータ部に漏洩する外部からの磁気を該磁気シールド部材で遮蔽することを特徴とする回転位置検出装置。A rotor part having a predetermined shape made of a magnetic response member attached to a detection target rotating shaft made of a magnetic material, and a stator having a coil part excited by an AC signal, and the magnetism corresponding to the rotation of the rotating shaft Rotation in which the relative rotational position of the response member and the coil portion changes, the impedance of the coil portion is changed in accordance with the change in the relative rotational position, and an output signal is generated in accordance with the impedance change. In the position detection device,
A rotating position characterized in that a magnetic shield member is provided at a joint portion for fixing the rotor portion to the rotating shaft, and the magnetism from the outside leaking to the rotor portion through the rotating shaft is shielded by the magnetic shield member. Detection device. 検出対象回転軸に取り付けられる磁気応答部材からなる所定形状のロータ部と、交流信号によって励磁されるコイル部を備えたステータとを具備し、前記回転軸の回転に応じて前記磁気応答部材と前記コイル部との相対的回転位置が変化し、この相対的回転位置の変化に応じて前記コイル部のインピーダンスを変化させ、このインピーダンス変化に応じた出力信号を生成するようにした回転位置検出装置において、
前記コイル部の周囲に、該コイル部に対する外部からの磁気を遮蔽するための磁気シールド部材を設けたことを特徴とする回転位置検出装置。A rotor portion having a predetermined shape made of a magnetic response member attached to a rotation shaft to be detected; and a stator having a coil portion excited by an AC signal, and the magnetic response member and the rotor according to the rotation of the rotation shaft In the rotational position detection device in which the relative rotational position of the coil portion changes, the impedance of the coil portion is changed according to the change of the relative rotational position, and an output signal is generated according to the impedance change. ,
A rotational position detecting device, wherein a magnetic shield member for shielding magnetism from the outside to the coil portion is provided around the coil portion.
JP2001313083A 2001-10-10 2001-10-10 Rotary position detector Expired - Fee Related JP4336070B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001313083A JP4336070B2 (en) 2001-10-10 2001-10-10 Rotary position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001313083A JP4336070B2 (en) 2001-10-10 2001-10-10 Rotary position detector

Related Child Applications (1)

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JP2009105742A Division JP5135277B2 (en) 2009-04-23 2009-04-23 Rotary position detector

Publications (3)

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JP2003121107A JP2003121107A (en) 2003-04-23
JP2003121107A5 true JP2003121107A5 (en) 2005-06-30
JP4336070B2 JP4336070B2 (en) 2009-09-30

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4532417B2 (en) * 2005-01-25 2010-08-25 古河電気工業株式会社 Rotation sensor
KR100927690B1 (en) * 2005-01-31 2009-11-18 도요타 지도샤（주） Resolver fixing structure
JP4639281B2 (en) * 2005-03-31 2011-02-23 多摩川精機株式会社 Flat type resolver
JP4762622B2 (en) * 2005-07-13 2011-08-31 古河電気工業株式会社 Rotation sensor
JP4934340B2 (en) * 2006-03-31 2012-05-16 古河電気工業株式会社 Displacement sensor and rotation sensor
JP2010112825A (en) * 2008-11-06 2010-05-20 Takenaka Electronic Industrial Co Ltd Device for measuring traveling object to be inspected with the use of space filter
JP5764785B2 (en) * 2011-04-13 2015-08-19 多摩川精機株式会社 Segment resolver
JP6997098B2 (en) * 2016-10-31 2022-01-17 三菱電機株式会社 Rotation angle detection device and rotation angle detection method

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JPH0619292Y2 (en) * 1986-04-04 1994-05-18 山洋電気株式会社 Brushless resolver
JP3349623B2 (en) * 1995-08-23 2002-11-25 多摩川精機株式会社 Rotary differential transformer
JP2000031064A (en) * 1998-07-10 2000-01-28 Hitachi Cable Ltd Method and device for horizontal vapor phase epitaxial growth
JP3514984B2 (en) * 1998-10-30 2004-04-05 山洋電気株式会社 Electromagnetic induction type rotation sensor
JP4390348B2 (en) * 1999-03-15 2009-12-24 株式会社アミテック Rotary position detector
BR9905263A (en) * 1999-09-30 2001-06-12 Elevadores Atlas S A Position sensor by magnetic permanence
JP3665737B2 (en) * 2000-11-30 2005-06-29 山洋電気株式会社 nX Reluctance Resolver

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