WO2013176104A1 - 磁気式回転角検出器 - Google Patents
磁気式回転角検出器 Download PDFInfo
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- WO2013176104A1 WO2013176104A1 PCT/JP2013/064014 JP2013064014W WO2013176104A1 WO 2013176104 A1 WO2013176104 A1 WO 2013176104A1 JP 2013064014 W JP2013064014 W JP 2013064014W WO 2013176104 A1 WO2013176104 A1 WO 2013176104A1
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- magnetic
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- rotation angle
- slit plate
- angle detector
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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
- 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
- G01D5/16—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 by varying resistance
- G01D5/165—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 by varying resistance by relative movement of a point of contact or actuation and a resistive track
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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
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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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
-
- 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
- G01D5/147—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 movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
Definitions
- the present invention relates to a magnetic rotation angle detector.
- a magnetic rotation angle detector there is a method in which a magnetic slit obtained by processing a disk-shaped magnetic body into a slit shape is attached to a motor, and a magnetic field change accompanying the rotation of the magnetic slit is detected by a magnetic sensor.
- Patent Document 1 in a magnetic encoder, a detection body is arranged between a magnetic slit plate and a flat magnet, and a plurality of magnetoresistive elements are arranged on the detection body in a circumferential shape having substantially the same diameter as the magnetic slit plate. It is described to do. Thereby, according to Patent Document 1, since the magnetoresistive element is arranged on the entire circumference of the magnetic slit plate, it is possible to detect the rotation of the magnetic slit plate by canceling the shaft flutter and the rotation portion mounting error. It is supposed to be possible.
- Patent Document 1 The technique described in Patent Document 1 is to enable detection of the rotation angle of the magnetic slit by disposing a magnetic sensor (magnetoresistance element) between the magnetic slit and the flat magnet. Conceivable.
- the magnetic rotation angle detector described in Patent Document 1 using a magnetic slit is called an incremental method, and detects the relative rotation angle by counting the change in signal due to the rotation of the magnetic slit plate. It is thought to be.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a magnetic rotation angle detector capable of miniaturizing a configuration for detecting an absolute rotation angle with high resolution.
- the magnetic rotation angle detector is configured so that the magnetic pole changes n times (n is an integer of 1 or more) every rotation.
- the disk-shaped magnet magnetized to the magnet and the magnetic flux transmittance so that the magnetic flux transmittance changes m times (m is an integer of 2 or more, m> n) every time it rotates together with the magnet.
- FIG. 1 is a configuration diagram of a magnetic rotation angle detector according to the first embodiment.
- FIG. 2 is a configuration diagram of the rotating disk according to the first embodiment.
- FIG. 3 is a diagram illustrating an example of an output signal of the magnetic sensor according to the first embodiment.
- FIG. 4 is a diagram illustrating the positions of the magnetic slit plate and the magnetic sensor according to the first embodiment.
- FIG. 5 is a diagram illustrating a waveform of a signal obtained by the angle calculation unit according to the first embodiment.
- FIG. 6 is a diagram illustrating a waveform of a signal obtained by the angle calculation unit according to the first embodiment.
- FIG. 7 is a diagram showing the positions of the magnetic slit plate and the magnetic sensor according to the second embodiment.
- FIG. 8 is a diagram illustrating a waveform of a signal obtained by the angle calculation unit according to the second embodiment.
- FIG. 9 is a configuration diagram of a magnetic rotation angle detector according to the third embodiment.
- FIG. 10 is a diagram showing the relationship between the magnetic field strength from the magnet and the distance in the magnetic rotation angle detector according to the third embodiment.
- FIG. 11 is a configuration diagram of a magnetic rotation angle detector according to the fourth embodiment.
- FIG. 12 is a configuration diagram of a rotating disk according to the fourth embodiment.
- FIG. 13 is a configuration diagram of a magnetic rotation angle detector according to the fifth embodiment.
- FIG. 1 shows an example of a magnetic rotation angle detector according to Embodiment 1 of the present invention.
- the magnet 4 is fixed to the rotating shaft 3, and the magnetic slit plate 5 and the magnet 4 constitute the rotating disk 1 together.
- each of the magnetic slit plate 5 and the magnet 4 is a hollow disk having a hole into which the rotary shaft 3 is inserted near the center.
- the rotating disk 1 rotates integrally with the rotating shaft 3.
- a magnetic sensor 2 fixed to a housing (not shown) is installed at a position facing the magnet 4 with the magnetic slit plate 5 interposed therebetween. Even if the rotating disk 1 rotates, the position of the magnetic sensor 2 does not change.
- the output of the magnetic sensor 2 changes corresponding to the change of the magnetic field.
- the angle calculation unit 7 calculates the rotation angle of the rotating disk 1 from the output from the magnetic sensor 2 and outputs it.
- the rotating disk 1 and the magnetic sensor 2 are disposed with a gap in the direction (z direction) along the rotation axis of the rotating shaft 3.
- the distance between the rotating disk 1 and the magnetic sensor 2 takes into consideration the magnetic characteristics of the magnet 4 and the magnetic slit plate 5, the sensitivity to changes in the magnetic field of the magnetic sensor 2, and the restrictions on the assembly of the entire magnetic rotation angle detector. And determined.
- the rotating disk 1 may include a member such as a boss for fastening with the rotating shaft 3, but detailed description thereof is omitted in the first embodiment.
- FIG. 2 is a diagram for explaining the structure of the rotating disk 1.
- the rotating disk 1 includes a magnet 4 and a magnetic slit plate 5.
- the magnet 4 and the magnetic slit plate 5 are drawn separately for the sake of explanation, but actually the magnet 4 and the magnetic slit plate 5 rotate together as shown in FIG. To do.
- the magnetic slit plate 5 and the magnet 4 are respectively fixed to the rotary shaft 3, and the magnet 4 is rotated with the rotation of the rotary shaft 3.
- the magnetic slit plate 5 rotate together.
- the magnetization direction of the magnet 4 is generally called radial magnetization.
- the magnet 4 is in a state in which an N pole and an S pole are magnetized in the x-axis direction.
- the magnet 4 fixed to the rotating shaft 3 is measured.
- the magnetic slit plate 5 has, for example, a disk shape, and has a structure in which an opening and a shielding portion are repeated at a certain angle P [rad] along the circumferential direction.
- the magnetic flux of the magnet 4 below the z-axis is transmitted to the upper part of the z-axis, and the shielding part prevents the magnetic flux of the magnet 4 below the z-axis from being transmitted to the upper part of the z-axis.
- the magnetic slit plate 5 is formed of a member having a high magnetic flux transmittance at a portion corresponding to the opening and a member having a low magnetic flux transmittance at a portion corresponding to the shielding portion, even if the opening is not physically formed. It does not matter if the structure is repeated.
- the width of the opening of the magnetic slit plate 5 and the width of the shielding portion are, for example, substantially equal to P / 2 [rad].
- P 2 ⁇ / 16 [rad]
- there are 16 sets of openings and shielding portions. That is, if the frequency with respect to one rotation of the magnetic slit plate 5 fixed to the rotary shaft 3 is m, m 16 magnetic field changes. Note that m is an integer larger than n.
- FIG. 4 is a diagram of the magnetic slit plate 5 and the magnetic sensor 2 in FIG. 1 viewed from above the z axis.
- the magnetic slit plate 5 is indicated by a broken line.
- the magnetic sensor 2 includes a magnetic detection element group 6 arranged in an array.
- the magnetic detection element group 6 includes two magnetic detection elements 61 and 62 arranged at an interval of P / 2 [rad]. It is composed of At this time, when the output from the magnetic detection element 61 is F 1 ( ⁇ ) and the output from the magnetic detection element 62 is F 2 ( ⁇ ), the following expression (1) is obtained.
- FIG. 6 shows the state of the waveform of the signal represented by Expression (4).
- two signals of frequency n and frequency m can be extracted from one track.
- n 1
- position detection with higher resolution (resolution) is possible from the signal of frequency m. Therefore, the absolute position of the rotating disk 1 can be detected with high accuracy from the frequency n signal and the frequency m signal.
- a high-resolution magnetic rotation angle detector can be realized with a small casing. That is, in the magnetic rotation angle detector, the configuration for detecting the absolute rotation angle with high resolution (high resolution) can be reduced in size.
- the present invention is limited to this separation method.
- only one magnetic detection element is used, and the component of frequency n is separated from the component of frequency m after the Fourier transform process in the angle calculation unit 7, and the sine wave waveform and the frequency of frequency n are separated by the inverse Fourier transform process.
- a sine wave waveform of m may be obtained.
- FIG. 7 is a view for explaining the positional relationship between the magnetic slit plate 5 and the magnetic sensor 2 in the magnetic rotation angle detector according to the second embodiment.
- FIG. 7 is the same as FIG. 4 showing the positional relationship between the magnetic slit plate 5 and the magnetic sensor 2 according to the first embodiment except that the installation positions of the magnetic detection elements 61 and 62 of the magnetic sensor 2 are different.
- the hatched portion indicates that the south pole of the magnet 4 is below the magnetic slit plate 5, and the magnetic slit plate 5 rotates around the rotation axis 8 of the rotary shaft 3. ing.
- FIG. 7 is the same as FIG. 4 showing the positional relationship between the magnetic slit plate 5 and the magnetic sensor 2 according to the first embodiment except that the installation positions of the magnetic detection elements 61 and 62 of the magnetic sensor 2 are different.
- the hatched portion indicates that the south pole of the magnet 4 is below the magnetic slit plate 5, and the magnetic slit plate 5 rotates around the rotation axis 8 of the rotary shaft 3.
- the magnetic detection elements 61 and 62 are set at a position of 180 degrees with respect to the rotation shaft 8.
- the n ⁇ component that is the periodic variation component of the frequency n is removed from F 1 ( ⁇ ) + F 2 ( ⁇ ), and a sine wave having only the m ⁇ component that is the periodic variation component of the frequency m is obtained.
- the state of F 1 ( ⁇ ) + F 2 ( ⁇ ) is shown in FIG.
- the two signals of the frequency n and the frequency m are separated with higher accuracy (for example, completely) than the magnetic rotation angle detector according to the first embodiment. Can be taken out.
- FIG. 9 is a side view of a magnetic rotation angle detector according to the third embodiment of the present invention.
- the basic configuration of the present embodiment is almost the same as that of the magnetic rotation angle detector according to the first and second embodiments of the present invention, but a non-magnetic material having a thickness T between the magnet 4 and the magnetic slit plate 5.
- the difference is that a body spacer 9 is provided.
- the spacer 9 is, for example, a hollow disk shape having a hole into which the rotary shaft 3 is inserted near the center. The spacer 9 rotates integrally with the magnet 4 and the magnetic slit plate 5.
- the rotating shaft 3 is inserted into the magnetic slit plate 5, the spacer 9, and the magnet 4, so that the magnetic slit plate 5, the spacer 9, and the magnet 4 are fixed to the rotating shaft 3.
- the magnet 4, the spacer 9, and the magnetic slit plate 5 rotate together.
- the magnetic field is modulated by the magnetic slit in the vicinity of the point with the largest magnetic field on the surface of the magnet 4 (the surface of the magnet 4 facing the magnetic slit plate 5).
- the magnetic slit plate 5 is thin and the magnetic field intensity from the magnet 4 is large, the magnetic slit plate 5 is magnetically saturated, and the magnetic field modulation by the magnetic slit is sufficient for the magnetic field change from the magnet 4. It is assumed that this is not possible.
- a non-magnetic spacer 9 is provided between the magnet 4 and the magnetic slit plate 5, and the magnetic field is modulated by the magnetic slit at a position separated from the magnet 4 by the thickness T of the spacer. Is multiplied.
- the spacer thickness T is set so that the magnetic field is modulated by the magnetic slit at the position where the magnetic field intensity from the magnet 4 is 0.7 is illustrated.
- the thickness T of the spacer can be arbitrarily set according to the required performance.
- the output ratio of the sine wave waveform with the frequency n and the sine wave waveform with the frequency m can be arbitrarily set, so that the calculation processing capability of the angle calculation unit 7 can be improved.
- a more reliable rotation angle detector can be obtained.
- FIG. 11 shows an example of a magnetic rotation angle detector according to the fourth embodiment of the present invention. Comparing FIG. 11 with FIG. 1 showing the magnetic rotation angle detector according to the first embodiment of the present invention, a magnet 14 that rotates integrally with the rotating shaft 3 is installed at the center of the rotating disk 1. It is basically the same except that it is. The magnet 4, the magnetic slit plate 5, and the magnet 14 rotate integrally with the rotating shaft 3.
- FIG. 12 is a view for explaining the structure of the rotating disk 1.
- the rotating disk 1 includes a magnet 4 and a magnetic slit plate 5.
- the magnet 4 and the magnetic slit plate 5 are drawn separately for the sake of explanation, but actually the magnet 4 and the magnetic slit plate 5 rotate together as shown in FIG. To do.
- the magnetic field is formed so as to be changed.
- a component of one rotation m cycle You may make it obtain the output which removed.
- an output from which the component of one rotation n period is removed may be obtained.
- Each frequency component may be separated by Fourier transform processing or the like.
- FIG. FIG. 13 shows an example of a magnetic rotation angle detector according to the fifth embodiment of the present invention.
- FIG. 13 is the same as FIG. 1 showing the magnetic rotation angle detector according to the first embodiment of the present invention except that the magnetic slit plate 5 is changed to the magnetic slit plate 51.
- the magnetic slit plate 5 is formed separately from the magnet 4 and is installed so as to be integrated with the magnet 4.
- the magnetic slit plate 51 is formed on the magnet 4 by printing using magnetic ink or the like.
- the magnetic rotation angle detector according to the present invention is useful for detecting the rotation angle of the magnetic slit plate.
- Magnetic sensor 4 magnets, 5, 51 magnetic slit plate, 7 angle calculator.
Abstract
Description
図1は、本発明の実施の形態1による磁気式回転角検出器の一例を示したものである。磁石4は回転シャフト3に固定されており、磁性体スリット板5と磁石4とは一体となって回転円板1を構成している。例えば、磁性体スリット板5と磁石4とは、それぞれ、回転シャフト3が差し込まれる穴を中心近傍に有する中空の円盤状である。回転円板1は、回転シャフト3と一体となって回転する。磁性体スリット板5を挟んで磁石4と対向する位置に、図示されていない筐体に固定された磁気センサ2が設置されている。回転円板1が回転しても、磁気センサ2の位置は変わらない。磁気センサ2は、磁界の変化に対応して出力が変化する。角度演算部7は、磁気センサ2からの出力から回転円板1の回転角を求めて、出力する。
本実施の形態2による磁気式回転角検出器の構成を、図7を用いて説明する。図7は、実施の形態2による磁気式回転角検出器における磁性体スリット板5と磁気センサ2の位置関係を説明するための図である。図7を実施の形態1による磁性体スリット板5と磁気センサ2の位置関係を示す図4と比べると、磁気センサ2の磁気検出素子61および62の設置位置が異なる以外は、同じである。また、図7においては、ハッチングの部分は磁性体スリット板5の下に磁石4のS極があることを示しており、磁性体スリット板5は回転シャフト3の回転軸8を中心として回転している。実施の形態2においては、図7に示すとおり、磁気検出素子61と62とが、回転軸8に対して180度の位置に設定されている。磁石4の着磁の周波数nが2以上のときは、磁気検出素子61と62とは、磁石4の着磁ピッチをQ(Q=2π/n)としたときに、互いにQ/2の間隔で配置される。
図9は、本発明の実施の形態3による磁気式回転角検出器の側面図である。本実施の形態の基本的な構成は本発明の実施の形態1および2による磁気式回転角検出器とほぼ同様であるが、磁石4と磁性体スリット板5の間に厚さTの非磁性体のスペーサ9が設けられる点が異なる。スペーサ9は、例えば、回転シャフト3が差し込まれる穴を中心近傍に有する中空の円盤状である。スペーサ9は、磁石4と磁性体スリット板5と一体となって回転する。例えば、回転シャフト3が磁性体スリット板5とスペーサ9と磁石4とにそれぞれ差し込まれることで、磁性体スリット板5とスペーサ9と磁石4とがそれぞれ回転シャフト3に固定され、回転シャフト3の回転に伴って磁石4とスペーサ9と磁性体スリット板5とは一体となって回転する。
図11は、本発明の実施の形態4による磁気式回転角検出器の一例を示したものである。図11を本発明の実施の形態1による磁気式回転角検出器を示した図1と比べると、回転円板1の中央部分に回転シャフト3と一体となって回転する磁石14が設置されていること以外は基本的に同じである。磁石4、磁性体スリット板5および磁石14は、回転シャフト3と一体となって回転する。
図13は、本発明の実施の形態5による磁気式回転角検出器の一例を示したものである。図13を本発明の実施の形態1による磁気式回転角検出器を示した図1と比べると磁性体スリット板5が磁性体スリット板51に変わっている以外は同じである。
Claims (7)
- 1回転する毎に磁極がn回(nは1以上の整数)変化するように着磁された円盤状の磁石と、
前記磁石と一体に回転し1回転する毎に磁束透過率がm回(mは2以上の整数で、m>n)変化するように磁束透過率の高い部分と低い部分とが交互に繰り返される磁性体スリット板と、
前記磁性体スリット板を通った前記磁石からの磁気を検出する磁気センサと、
前記磁気センサの出力から前記磁石の回転角度を求める演算部と、
を備える磁気式回転角検出器。 - 前記演算部は、前記磁石が1回転するときの周波数nの信号成分と周波数mの信号成分とを分離して前記磁石の回転角度を求める
ことを特徴とする請求項1に記載の磁気式回転角検出器。 - 前記磁気センサは、π/m[rad]の間隔で配置された複数の磁気検出素子を有する
ことを特徴とする請求項1または2に記載の磁気式回転角検出器。 - 前記磁気センサは、π/n[rad]の間隔で配置された複数の磁気検出素子を有する
ことを特徴とする請求項1または2に記載の磁気式回転角検出器。 - 前記磁石と前記磁性体スリット板との間に設けられた非磁性体のスペーサをさらに備え、
前記磁石と前記磁性体スリット板との間に一定の間隔が設けられている
ことを特徴とする請求項1から4のいずれか1項に記載の磁気式回転角検出器。 - 1回転する毎に磁極がk回(kは1以上の整数で、k<n)変化するように着磁され、前記磁石の内側に配された円盤状の第2の磁石をさらに備えた
ことを特徴とする請求項1から5のいずれか1項に記載の磁気式回転角検出器。 - 前記磁性体スリット板は、前記磁石の表面に磁気インクで印刷されている
ことを特徴とする請求項1から6のいずれか1項に記載の磁気式回転角検出器。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US14/378,559 US9702735B2 (en) | 2012-05-22 | 2013-05-21 | Magnetic rotation-angle detector |
CN201380023134.9A CN104303020B (zh) | 2012-05-22 | 2013-05-21 | 磁式旋转角检测器 |
JP2014516799A JP5893134B2 (ja) | 2012-05-22 | 2013-05-21 | 磁気式回転角検出器 |
KR1020147027719A KR20140138253A (ko) | 2012-05-22 | 2013-05-21 | 자기식 회전각 검출기 |
DE112013002617.1T DE112013002617T5 (de) | 2012-05-22 | 2013-05-21 | Magnetdrehwinkeldetektor |
TW102118019A TWI476375B (zh) | 2012-05-22 | 2013-05-22 | 磁力式旋轉角檢測器 |
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JP2012116754 | 2012-05-22 | ||
JP2012-116754 | 2012-05-22 |
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PCT/JP2013/064014 WO2013176104A1 (ja) | 2012-05-22 | 2013-05-21 | 磁気式回転角検出器 |
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US (1) | US9702735B2 (ja) |
JP (1) | JP5893134B2 (ja) |
KR (1) | KR20140138253A (ja) |
CN (1) | CN104303020B (ja) |
DE (1) | DE112013002617T5 (ja) |
TW (1) | TWI476375B (ja) |
WO (1) | WO2013176104A1 (ja) |
Cited By (3)
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WO2015134140A1 (en) * | 2014-03-05 | 2015-09-11 | Dynapar Corporation | Rotational sensor |
JP2019074397A (ja) * | 2017-10-16 | 2019-05-16 | 旭化成エレクトロニクス株式会社 | 角度検出装置、角度検出方法、およびプログラム |
WO2021002149A1 (ja) * | 2019-07-04 | 2021-01-07 | 日立オートモティブシステムズ株式会社 | 操舵量検出装置 |
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JP6180197B2 (ja) * | 2013-06-17 | 2017-08-16 | 株式会社ケーヒン | 回転角度検出装置 |
US9979259B2 (en) * | 2015-08-27 | 2018-05-22 | Apple Inc. | Electromagnetic levitator |
JP6512141B2 (ja) * | 2016-03-09 | 2019-05-15 | Tdk株式会社 | 磁石および変位検出装置 |
KR101963106B1 (ko) * | 2016-11-29 | 2019-04-01 | 주식회사 해치텍 | 회전각 검출 장치 |
US10163053B2 (en) | 2017-01-06 | 2018-12-25 | International Business Machines Corporation | Coded tags encoded using different magnetic materials and systems of detecting coded tags |
CN111043943B (zh) * | 2018-10-15 | 2021-09-03 | 大银微系统股份有限公司 | 旋转轴件的偏移感测机构 |
CN109367727B (zh) * | 2018-12-03 | 2021-05-07 | 深圳市苇渡智能科技有限公司 | 一种遥控器及电动冲浪板 |
DE102019112423B4 (de) * | 2019-05-13 | 2022-07-28 | Beyond Gravity Germany GmbH | Encoder |
KR20220009588A (ko) | 2020-07-16 | 2022-01-25 | 한국전자기술연구원 | 자성체를 이용한 회전체의 절대위치 검출장치 및 검출방법 |
KR102419301B1 (ko) | 2020-07-16 | 2022-07-12 | 한국전자기술연구원 | 회전체의 절대위치 검출장치 및 검출방법 |
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- 2013-05-21 KR KR1020147027719A patent/KR20140138253A/ko not_active Application Discontinuation
- 2013-05-21 CN CN201380023134.9A patent/CN104303020B/zh active Active
- 2013-05-21 JP JP2014516799A patent/JP5893134B2/ja active Active
- 2013-05-21 WO PCT/JP2013/064014 patent/WO2013176104A1/ja active Application Filing
- 2013-05-21 US US14/378,559 patent/US9702735B2/en active Active
- 2013-05-22 TW TW102118019A patent/TWI476375B/zh active
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WO2015134140A1 (en) * | 2014-03-05 | 2015-09-11 | Dynapar Corporation | Rotational sensor |
JP2019074397A (ja) * | 2017-10-16 | 2019-05-16 | 旭化成エレクトロニクス株式会社 | 角度検出装置、角度検出方法、およびプログラム |
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JP2021012046A (ja) * | 2019-07-04 | 2021-02-04 | 日立オートモティブシステムズ株式会社 | 操舵量検出装置 |
Also Published As
Publication number | Publication date |
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JP5893134B2 (ja) | 2016-03-23 |
US20150054499A1 (en) | 2015-02-26 |
KR20140138253A (ko) | 2014-12-03 |
CN104303020B (zh) | 2016-08-31 |
DE112013002617T5 (de) | 2015-04-02 |
TWI476375B (zh) | 2015-03-11 |
US9702735B2 (en) | 2017-07-11 |
CN104303020A (zh) | 2015-01-21 |
JPWO2013176104A1 (ja) | 2016-01-14 |
TW201403032A (zh) | 2014-01-16 |
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