JP2523654Y2 - Magnetoelectric conversion rotation angle detector - Google Patents
Magnetoelectric conversion rotation angle detectorInfo
- Publication number
- JP2523654Y2 JP2523654Y2 JP2091491U JP2091491U JP2523654Y2 JP 2523654 Y2 JP2523654 Y2 JP 2523654Y2 JP 2091491 U JP2091491 U JP 2091491U JP 2091491 U JP2091491 U JP 2091491U JP 2523654 Y2 JP2523654 Y2 JP 2523654Y2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- magnetized
- band
- rotation angle
- magnetized band
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は磁電変換式回転角検知装
置に関するものであり、特に、回転角の被検知物である
回転体に施された着磁帯を改良した磁電変換式回転角検
知装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-electric conversion type rotation angle detecting device, and more particularly to a magneto-electric conversion type rotation angle detection in which a magnetized band applied to a rotating body which is an object whose rotation angle is to be detected is improved. It concerns the device.
【０００２】[0002]
【従来の技術】図５は従来の磁電変換式回転角検知装置
の一例を示す斜視図およびその要部拡大図である。同図
において、回転角の被検知物である回転体（図示せず）
に装着される回転子１の端部には所望の着磁を施すため
の着磁リング２が嵌着されている。着磁リング２には、
その全周に亘ってＮ極およびＳ極が交互に着磁されたＡ
Ｂ相着磁帯３と、Ｎ極，Ｓ極のいずれか一方の極を他方
の極で挟む形で着磁リング２の一部に着磁されたＺ相着
磁帯４とが設けられている。2. Description of the Related Art FIG. 5 is a perspective view showing an example of a conventional magneto-electric conversion type rotation angle detecting device and an enlarged view of a main part thereof. In the figure, a rotating body (not shown) which is a detection object of a rotation angle
A magnetizing ring 2 for performing desired magnetizing is fitted to an end of a rotor 1 mounted on the magnet. In the magnetized ring 2,
A in which N and S poles are alternately magnetized over the entire circumference
A B-phase magnetized band 3 and a Z-phase magnetized band 4 magnetized on a part of the magnetized ring 2 with one of the N pole and the S pole sandwiched by the other pole are provided. I have.
【０００３】着磁リング２の外周面に対して、所定の間
隙を有して磁電変換素子５および６が配設されている。
一方の磁電変換素子５（以下、ＡＢ相センサ５という）
はＡＢ相着磁帯３と対向する位置に配され、他方の磁電
変化素子６（以下、Ｚ相センサという）はＺ相着磁帯４
と対向する位置に配されている。[0003] Magnetoelectric conversion elements 5 and 6 are arranged at a predetermined gap from the outer peripheral surface of the magnetizing ring 2.
One magnetoelectric conversion element 5 (hereinafter referred to as AB phase sensor 5)
Is disposed at a position facing the AB-phase magnetized band 3, and the other magnetoelectric change element 6 (hereinafter, referred to as a Z-phase sensor) is
Are arranged at a position opposed to.
【０００４】ＡＢ相センサ５は、回転子１が矢印１１の
方向に回転するのに伴ってＡＢ相着磁帯３のＮ極および
Ｓ極から交互に磁気作用を受け、正弦波信号を出力す
る。この正弦波信号は図示しない波形整形手段に供給さ
れて矩形波信号に整形され、その矩形波信号のパルス数
を計数することによって回転子１の回転角を検知するこ
とができる。The AB phase sensor 5 receives a magnetic action alternately from the N pole and the S pole of the AB phase magnetized band 3 as the rotor 1 rotates in the direction of the arrow 11, and outputs a sine wave signal. . The sine wave signal is supplied to a waveform shaping means (not shown) and shaped into a rectangular wave signal. By counting the number of pulses of the rectangular wave signal, the rotation angle of the rotor 1 can be detected.
【０００５】同様に、Ｚ相センサ６もＺ相着磁帯４によ
る磁界の作用で正弦波信号を出力する。但し、こちらの
場合は着磁リングの全周ではなく、一部に着磁されてい
るだけなので、連続して正弦波信号が出力されるのでは
ない。つまり回転子１の１回転についてＺ相着磁部４と
Ｚ相センサ６とが対向する位置においてのみ正弦波信号
が出力されることになる。このように正弦波信号は限定
された範囲でのみ出力されるので、この信号に基づいて
回転子１の１回転中における位置を特定でき、この位置
を回転角検知の基準点とすることができる。なお、図５
（ｂ）に示したようにこの従来装置では、Ｚ相着磁帯４
はＳ極をＮ極で挟む配置にしているが、その逆にＮ極を
Ｓ極で挟むような配置もある。Similarly, the Z-phase sensor 6 outputs a sine wave signal by the action of the magnetic field generated by the Z-phase magnetized band 4. However, in this case, the sine wave signal is not output continuously because the magnetized ring is only partially magnetized, not the entire circumference. That is, a sine wave signal is output only at a position where the Z-phase magnetized portion 4 and the Z-phase sensor 6 face each other for one rotation of the rotor 1. Since the sine wave signal is output only in a limited range as described above, the position of the rotor 1 during one rotation can be specified based on this signal, and this position can be used as a reference point for rotation angle detection. . FIG.
As shown in (b), in this conventional device, the Z-phase magnetized
Has an arrangement in which the S pole is sandwiched by the N poles. On the contrary, there is also an arrangement in which the N pole is sandwiched by the S poles.
【０００６】[0006]
【考案が解決しようとする課題】上記した従来の磁電変
換式回転角検知装置には、次のような問題点があった。
図６に従来の磁電変換式回転角検知装置で得られるＺ相
センサ６の出力信号波形を示す。同図において、正弦波
信号ＳＷはＮ極側のしきい値ＴｈｎとＳ極側のしきい値
Ｔｈｓとに従ってパルス整形され、矩形波信号ＰＷに変
換される。このように、Ｎ極およびＳ極の両側にしきい
値を設定して波形整形する方式を両磁界方式と呼ぶ。The conventional magneto-electric conversion type rotation angle detecting device has the following problems.
FIG. 6 shows the output signal waveform of the Z-phase sensor 6 obtained by the conventional magneto-electric conversion type rotation angle detecting device. In the figure, a sine wave signal SW is pulse-shaped according to a threshold value Thn on the N pole side and a threshold value Ths on the S pole side, and is converted into a rectangular wave signal PW. Such a method of setting the threshold values on both sides of the N pole and the S pole and shaping the waveform is called a dual magnetic field method.
【０００７】この両磁界方式では図示のように、Ｚ相着
磁帯４によって得られるＺ相センサ６の出力信号の波形
には、オフからオンへの変化点がＳ１，Ｓ２の２か所に
現れる。矩形波信号ＰＷの立上がりを検出して回転基準
を認識する検知装置では、余計な変化点Ｓ１が現れる矩
形波ＰＷでは回転基準の認識が困難となって処理回路が
複雑になるという問題点があった。[0007] In this dual magnetic field system, as shown in the figure, the waveform of the output signal of the Z-phase sensor 6 obtained from the Z-phase magnetized band 4 has two transition points from OFF to ON at S1 and S2. appear. The detection device that detects the rise of the rectangular wave signal PW and recognizes the rotation reference has a problem in that it is difficult to recognize the rotation reference in the rectangular wave PW where an extra change point S1 appears and the processing circuit becomes complicated. Was.
【０００８】このような変化点Ｓ１が現れないようにす
るためには、しきい値ＴｈｎおよびＴｈｓの双方をＳ極
側に設定するようにすればよい。このようにしきい値を
片方の磁極側に設定して波形整形する方式を片磁界方式
と呼ぶ。この片磁界方式では、正弦波信号ＳＷの幅を有
効に使用できないため、Ｚ相センサ６と着磁リング２と
の間隙調整に高い精度を要求される。また、高精度を維
持できない場合は、Ｚ相着磁帯４の磁力を強くし、正弦
波信号ＳＷの振幅を大きくしなければならない。In order to prevent such a change point S1 from appearing, both threshold values Thn and Ths may be set to the S pole side. Such a method of setting the threshold value to one of the magnetic poles and shaping the waveform is called a single magnetic field method. Since the width of the sine wave signal SW cannot be used effectively in this single magnetic field method, high precision is required for adjusting the gap between the Z-phase sensor 6 and the magnetized ring 2. If high precision cannot be maintained, the magnetic force of the Z-phase magnetized band 4 must be increased to increase the amplitude of the sine wave signal SW.
【０００９】前記Ｚ相センサ６と着磁リング２との間隙
を正確に調整するには、長い調整時間が必要となったり
調整用の治具が必要となったりする。一方、Ｚ相着磁帯
４の磁力を強くするとＡＢ相着磁帯３に影響が出るた
め、ＡＢ着磁帯３の個々の磁極を小さくできない、つま
り分解能が低下するという問題点も生じる。In order to accurately adjust the gap between the Z-phase sensor 6 and the magnetized ring 2, a long adjustment time is required or an adjustment jig is required. On the other hand, when the magnetic force of the Z-phase magnetized band 4 is increased, the AB-phase magnetized band 3 is affected, so that the individual magnetic poles of the AB-magnetized band 3 cannot be reduced, that is, the resolution is reduced.
【００１０】このように、Ｚ相センサ６の出力波形は両
磁界方式で整形する方が利点が多いが、従来の着磁帯で
は上述のように両磁界方式を使用できないという問題点
があった。As described above, it is more advantageous to shape the output waveform of the Z-phase sensor 6 by the dual magnetic field method, but there is a problem that the conventional magnetic band cannot use the dual magnetic field method as described above. .
【００１１】本考案の目的は、前述の問題点を解決し、
センサ出力の処理や取付け調整を複雑にしないでＺ相セ
ンサ６の出力波形を両磁界方式によって整形できる磁電
変換式回転角検知装置を提供することにある。An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a magneto-electric conversion type rotation angle detecting device capable of shaping the output waveform of the Z-phase sensor 6 by a dual magnetic field method without complicating the processing of the sensor output and the mounting adjustment.
【００１２】[0012]
【課題を解決するための手段】前記の問題点を解決する
ために、本考案は、１個の基準磁極およびこの基準磁極
の両端に繋がり、かつ基準磁極とは逆極性のバックグラ
ウンド磁極からなる環状のＺ相着磁帯と、異なる極性の
磁極を交互に配してなる環状のＡＢ相着磁帯と、前記Ｚ
相着磁帯およびＡＢ相着磁帯の中間に設けられた環状磁
性体と、前記Ｚ相着磁帯に対向して配設された回転基準
検知用Ｚ相センサと、前記ＡＢ相着磁帯に対向して配設
された回転角検知用ＡＢ相センサとを具備すると共に、
前記各着磁帯は回転角被検知物体の回転方向に沿って配
設された点に特徴がある。In order to solve the above-mentioned problems, the present invention comprises one reference magnetic pole and background magnetic poles connected to both ends of the reference magnetic pole and having opposite polarities to the reference magnetic pole. An annular AB-phase magnetized band in which magnetic poles having different polarities are alternately arranged;
An annular magnetic body provided between the phase-magnetized band and the AB-phase magnetized band; a rotation-reference-detecting Z-phase sensor disposed opposite to the Z-phase magnetized band; And a rotation angle detection AB-phase sensor disposed opposite to
Each of the magnetized bands is characterized in that it is disposed along the rotation direction of the rotation angle of the detected object.
【００１３】[0013]
【作用】Ｚ相センサの出力波形は、これを両磁界方式で
整形した場合でも回転子の１回転につきオフからオンへ
の変化点は１か所、つまり基準磁極とバックグラウンド
磁極との境界の一方でしか現れないので、この変化点に
基づいて回転角検知の基準点を容易に認識できる。ま
た、ＡＢ着磁帯とＺ相着磁帯との間に設けられた環状磁
性体によってＺ相着磁帯の磁力がＡＢ相着磁帯で形成さ
れる磁界に影響を及ぼすのを防止できる。The output waveform of the Z-phase sensor has one point of change from OFF to ON for one rotation of the rotor, that is, the boundary between the reference magnetic pole and the background magnetic pole, even when the Z-phase sensor is shaped by the dual magnetic field method. Since it appears only on one side, the reference point for rotation angle detection can be easily recognized based on this change point. Further, the annular magnetic body provided between the AB magnetization band and the Z-phase magnetization band can prevent the magnetic force of the Z-phase magnetization band from affecting the magnetic field formed by the AB-phase magnetization band.
【００１４】[0014]
【実施例】以下に図面を参照して、本考案を詳細に説明
する。図１は本考案の一実施例を示す磁電変換式回転角
検知装置の斜視図およびその要部拡大図であり、図５と
同符号は同一または同等部分を示す。同図において、回
転子１に装着された着磁リング２の円周方向には、ＡＢ
相着磁帯３と、Ｚ相着磁帯７とが設けられている。ＡＢ
相着磁帯３は、多数のＮ極およびＳ極が交互に配置され
て環状を形成した着磁帯である。一方、Ｚ相着磁帯７
は、基準磁極となるＳ極と、この基準磁極に連続し、バ
ックグラウンド磁極となるＮ極とで環状を形成した着磁
帯である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a magnetoelectric conversion type rotation angle detecting device showing an embodiment of the present invention and an enlarged view of a main part thereof. The same reference numerals as those in FIG. 5 denote the same or equivalent parts. In the same figure, AB in the circumferential direction of the magnetized ring 2 mounted on the rotor 1
A phase magnetization band 3 and a Z phase magnetization band 7 are provided. AB
The phase magnetized band 3 is a magnetized band in which a large number of N poles and S poles are alternately arranged to form a ring. On the other hand, the Z-phase magnetized band 7
Is a magnetized band formed by an S pole serving as a reference magnetic pole and an N pole connected to the reference magnetic pole and serving as a background magnetic pole.
【００１５】本実施例において、Ｚ相着磁帯７の基準磁
極であるＳ極の大きさつまりＺ相着磁帯の環状方向（長
さ方向）寸法ｌは、前記ＡＢ相着磁帯３の１つの磁極の
大きさとほぼ同一にしているが、これは任意に設定でき
る。要は、Ｚ相着磁帯７の回転子１の回転方向に沿った
環状領域、つまり回転子１の円周領域の一部分をＮ極ま
たはＳ極の基準磁極で着磁し、それとは逆極性の磁極で
この基準磁極の両側に繋がるバックグラウンド磁極が形
成されていればよい。ＡＢ相着磁帯３とＺ相着磁帯７と
の間には、Ｚ相着磁帯７に隣接して中間着磁帯８が形成
されている。この中間着磁帯８は前記基準磁極と同じ極
性すなわちＳ極に着磁される。In this embodiment, the size of the S pole, which is the reference magnetic pole of the Z-phase magnetized band 7, that is, the dimension l in the annular direction (length direction) of the Z-phase magnetized band is the same as that of the AB-phase magnetized band 3. Although the size is almost the same as the size of one magnetic pole, this can be set arbitrarily. In short, the annular region of the Z-phase magnetized band 7 along the rotation direction of the rotor 1, that is, a part of the circumferential region of the rotor 1 is magnetized with the N-pole or S-pole reference magnetic pole, and the polarity opposite to that. It is sufficient that background magnetic poles connected to both sides of the reference magnetic pole are formed by the above magnetic poles. An intermediate magnetization band 8 is formed between the AB-phase magnetization band 3 and the Z-phase magnetization band 7 adjacent to the Z-phase magnetization band 7. The intermediate magnetized band 8 is magnetized to have the same polarity as the reference magnetic pole, that is, the S pole.
【００１６】次に、上記の着磁が施されたＡＢ相着磁帯
３およびＺ相着磁帯７の磁界の作用によってＡＢ相セン
サ５およびＺ相センサ６から出力される信号の波形を示
す。図２はＺ相センサ６から出力される信号波形を示す
図であり、図３はＡＢ相センサ５から出力される信号波
形を示す図である。図２および図３において、“１回
転”と示した分が、回転子１の１回転によってＡＢ相セ
ンサ５およびＺ相センサ６から出力される信号である。
このように、信号がオフからオンへ変化するのは回転子
１の１回転中に１回のみである。Next, waveforms of signals output from the AB-phase sensor 5 and the Z-phase sensor 6 by the action of the magnetic fields of the AB-phase magnetized band 3 and the Z-phase magnetized band 7 which have been subjected to the above-described magnetization will be described. . FIG. 2 is a diagram illustrating a signal waveform output from the Z-phase sensor 6, and FIG. 3 is a diagram illustrating a signal waveform output from the AB-phase sensor 5. In FIGS. 2 and 3, the signal indicated by “one rotation” is a signal output from the AB phase sensor 5 and the Z phase sensor 6 by one rotation of the rotor 1.
Thus, the signal changes from OFF to ON only once during one rotation of the rotor 1.
【００１７】なお、図３において鎖線で示した波形ＳＷ
ｄは、前記中間着磁帯８を設けなかった場合のＡＢ相セ
ンサ５の出力波形である。図示のように、中間着磁帯８
を設けない場合は、バックグラウンド磁極であるＮ極の
影響を受け、ＡＢ相センサ５に作用するＡＢ相着磁帯３
のＮ極の磁束数が減少し、逆にＳ極の磁束数が増加する
ため波形の中点がＳ極側にずれるのである。このよう
に、バックグラウンド磁極はＡＢ相センサの出力に与え
る影響を排除するために設けられる。The waveform SW shown by a chain line in FIG.
d is an output waveform of the AB phase sensor 5 when the intermediate magnetized band 8 is not provided. As shown in FIG.
Is not provided, the AB pole magnetized band 3 acting on the AB phase sensor 5 is affected by the N pole which is a background magnetic pole.
The number of magnetic fluxes at the N pole decreases and the number of magnetic fluxes at the S pole increases, so that the middle point of the waveform shifts to the S pole side. As described above, the background magnetic pole is provided to eliminate the influence on the output of the AB phase sensor.
【００１８】以上説明した実施例では、各着磁帯を回転
子１の円周に装着した着磁リング２の上に形成したが、
回転子１または回転角の被検知物体に直接着磁するよう
にしてもよい。また、着磁位置は回転子１や着磁リング
２の円周に限らず、被検知物体の形状や大きさに応じ、
回転子１や被検知物体の他の面に設けても良い。すなわ
ち、被検知物体である回転体の回転方向に着磁帯が沿っ
て形成されていればよい。In the embodiment described above, each magnetized band is formed on the magnetized ring 2 mounted on the circumference of the rotor 1.
You may make it magnetize directly to the rotor 1 or the to-be-detected object of a rotation angle. Further, the magnetized position is not limited to the circumference of the rotor 1 and the magnetized ring 2, but may vary depending on the shape and size of the detected object.
It may be provided on the rotor 1 or another surface of the detected object. That is, it is sufficient that the magnetized band is formed along the rotation direction of the rotating body that is the detected object.
【００１９】図４は、被検知物体の端面にＡＢ相着磁帯
３およびＺ相着磁帯７ならびに中間着磁帯８を形成した
例である。同図において、被検知物体９は矢印１１の方
向に回転する物体であり、その端面１０に、直径の異な
る環状の着磁帯３，７，８がそれぞれ形成されている。FIG. 4 shows an example in which an AB-phase magnetized band 3, a Z-phase magnetized band 7, and an intermediate magnetized band 8 are formed on the end face of the detected object. In the figure, the detected object 9 is an object that rotates in the direction of arrow 11, and annular magnetized bands 3, 7, 8 having different diameters are formed on the end face 10 thereof.
【００２０】なお、中間着磁帯８は積極的に着磁させる
代わりに、鉄などの磁性体で環状のシールド領域を形成
することによっても本実施例と同様の効果が得られる。The same effect as that of the present embodiment can be obtained by forming an annular shield region with a magnetic material such as iron instead of positively magnetizing the intermediate magnetized band 8.
【００２１】[0021]
【考案の効果】以上の説明から明らかなように、本考案
によれば、両磁界方式によってＺ相センサの出力を整形
した場合でも、センサの出力が単純化されているので回
転の基準点を容易に認識できる。したがって、両磁界方
式を使用できるようになり、着磁帯の磁界をセンサに有
効に作用させることができる。その結果、Ｚ相センサの
検知能力が上がり、取付け公差を緩和できる。As is apparent from the above description, according to the present invention, even when the output of the Z-phase sensor is shaped by the dual magnetic field method, the output of the sensor is simplified, so that the reference point of rotation is set. Easy to recognize. Therefore, the dual magnetic field system can be used, and the magnetic field of the magnetized band can be effectively applied to the sensor. As a result, the detection capability of the Z-phase sensor is improved, and the mounting tolerance can be reduced.
【図１】本考案の実施例を示す回転角検知装置の斜視図
である。FIG. 1 is a perspective view of a rotation angle detecting device according to an embodiment of the present invention.
【図２】Ｚ相センサの出力波形を示す図である。FIG. 2 is a diagram showing an output waveform of a Z-phase sensor.
【図３】ＡＢ相センサの出力波形を示す図である。FIG. 3 is a diagram showing an output waveform of an AB phase sensor.
【図４】第２実施例を示す回転角検知装置の斜視図であ
る。FIG. 4 is a perspective view of a rotation angle detecting device according to a second embodiment.
【図５】従来技術を示す回転角検知装置の斜視図であ
る。FIG. 5 is a perspective view of a rotation angle detection device showing a conventional technique.
【図６】従来技術のＺ相センサの出力波形を示す図であ
る。FIG. 6 is a diagram showing an output waveform of a conventional Z-phase sensor.
１…回転子、 ２…着磁リング、 ３…ＡＢ相着磁帯、
４，７…Ｚ相着磁帯、８…中間着磁帯、 ９…被検知
物体1: rotor, 2: magnetized ring, 3: AB-phase magnetized band,
4, 7: Z-phase magnetized band, 8: Intermediate magnetized band, 9: Object to be detected
───────────────────────────────────────────────────── フロントページの続き (72)考案者 古海 洋 埼玉県和光市中央一丁目４番１号 株式 会社 本田技術研究所内 (56)参考文献 特開 昭61−165620（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Furumi 1-4-1 Chuo, Wako-shi, Saitama Pref. Honda Technology Laboratory Co., Ltd. (56) References JP-A-61-165620 (JP, A)
Claims (3)
置された着磁帯を有し、この着磁帯の磁気作用によって
磁電変換素子から出力される電気信号に基づいて回転体
の回転角を検知する磁電変換式回転角検知装置におい
て、１個の基準磁極およびこの基準磁極の両端に繋が
り、かつ基準磁極と逆極性のバックグラウンド磁極から
なる環状のＺ相着磁帯と、異なる極性の磁極を交互に配
してなる環状のＡＢ相着磁帯と、前記Ｚ相着磁帯および
ＡＢ相着磁帯の中間に設けられた環状磁性体と、前記Ｚ
相着磁帯に対向して配設された回転基準検知用Ｚ相セン
サと、前記ＡＢ相着磁帯に対向して配設された回転角検
知用ＡＢ相センサとを具備すると共に、前記各着磁帯は
回転角被検知物体の回転方向に沿って配設されたことを
特徴とする磁電変換式回転角検知装置。1. A rotating body provided on an object to be detected, the magnetized bands having magnetic poles alternately arranged, and the rotation of a rotating body based on an electric signal output from a magnetoelectric conversion element by a magnetic action of the magnetized band. In a magneto-electric conversion type rotation angle detecting device for detecting an angle, an annular Z-phase magnetized band composed of one reference magnetic pole and background magnetic poles connected to both ends of the reference magnetic pole and having a polarity opposite to that of the reference magnetic pole has a different polarity. An annular AB-phase magnetized band in which magnetic poles are alternately arranged; an annular magnetic body provided between the Z-phase magnetized band and the AB-phase magnetized band;
A rotation reference detection Z-phase sensor disposed opposite to the phase-magnetized band; and a rotation angle detection AB-phase sensor disposed opposite to the AB-phase magnetization band. A magnetized conversion type rotation angle detecting device, wherein the magnetized band is disposed along the rotation direction of the rotation angle detection object.
長さ方向寸法が、前記ＡＢ相着磁帯の各磁極の同方向寸
法以下であることを特徴とする請求項１記載の磁電変換
式回転角検知装置。2. The reference magnetic pole of the Z-phase magnetized band has a dimension in the longitudinal direction of the magnetized band which is equal to or smaller than the same dimension of each magnetic pole of the AB-phase magnetized band. The magnetoelectric conversion type rotation angle detecting device according to the above.
性の着磁帯であることを特徴とする請求項１記載の磁電
変換式回転角検知装置。3. The magnetoelectric conversion type rotation angle detecting device according to claim 1, wherein the annular magnetic body is a magnetized band having the same polarity as the reference electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091491U JP2523654Y2 (en) | 1991-03-11 | 1991-03-11 | Magnetoelectric conversion rotation angle detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091491U JP2523654Y2 (en) | 1991-03-11 | 1991-03-11 | Magnetoelectric conversion rotation angle detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110917U JPH04110917U (en) | 1992-09-25 |
| JP2523654Y2 true JP2523654Y2 (en) | 1997-01-29 |
Family
ID=31906875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2091491U Expired - Fee Related JP2523654Y2 (en) | 1991-03-11 | 1991-03-11 | Magnetoelectric conversion rotation angle detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2523654Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216590A (en) * | 2008-03-11 | 2009-09-24 | Makome Kenkyusho:Kk | Absolute value type magnetic scale device |
-
1991
- 1991-03-11 JP JP2091491U patent/JP2523654Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04110917U (en) | 1992-09-25 |
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