JP2010060478A5 - - Google Patents
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- JP2010060478A5 JP2010060478A5 JP2008227792A JP2008227792A JP2010060478A5 JP 2010060478 A5 JP2010060478 A5 JP 2010060478A5 JP 2008227792 A JP2008227792 A JP 2008227792A JP 2008227792 A JP2008227792 A JP 2008227792A JP 2010060478 A5 JP2010060478 A5 JP 2010060478A5
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- linear motion
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- rotary motor
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- 238000006073 displacement reaction Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 21
- 230000003287 optical Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 1
Description
上記問題を解決するため、本発明は、次のように構成したものである。
本発明の一観点による直動回転モータの位置検出装置は、回転方向および直動方向に移動する出力軸を有するモータ部の前記出力軸の回転位置および直動位置を検出する直動回転モータの位置検出装置において、前記位置検出装置は、直動方向に一定間隔に設けた直動目盛を有する円筒状の直動スケールと、円筒状で前記直動方向に対して垂直方向に、２極着磁された永久磁石と、前記直動スケールから直動方向の変位を検出する直動変位検出部と、前記永久磁石の磁界から回転方向の変位を検出する回転変位検出部を備えたことを特徴としている。
In order to solve the above problems, the present invention is configured as follows.
A linear motion rotary motor position detection device according to an aspect of the present invention is a linear motion rotary motor that detects the rotational position and the linear motion position of the output shaft of a motor unit having an output shaft that moves in the rotational direction and the linear motion direction. In the position detection device, the position detection device includes a cylindrical linear motion scale having linear motion graduations provided at regular intervals in the linear motion direction, and a cylindrical electrode that is bipolar in a direction perpendicular to the linear motion direction. It comprises a magnetized permanent magnet, a linear displacement detector that detects displacement in the linear motion direction from the linear motion scale, and a rotational displacement detector that detects displacement in the rotational direction from the magnetic field of the permanent magnet. It is said.
本発明の他の観点による直動回転モータの位置検出装置は、回転方向および直動方向に移動する出力軸を有するモータ部の前記出力軸の回転位置および直動位置を検出する直動回転モータの位置検出装置において、前記位置検出装置は、直動方向に一定間隔に設けた直動目盛を有する円筒状の直動スケールと、円板状で、前記直動方向に対して垂直方向に２極着磁された複数の永久磁石と、前記直動スケールから直動方向の変位を検出する直動変位検出部と、前記永久磁石の磁界から回転方向の変位を検出する回転変位検出部を備えたことを特徴としている。
According to another aspect of the present invention, there is provided a linear motion rotary motor position detecting device that detects a rotational position and a linear motion position of the output shaft of a motor unit having an output shaft that moves in the rotational direction and the linear motion direction. In the position detecting device, the position detecting device has a cylindrical linear motion scale having linear motion graduations provided at regular intervals in the linear motion direction, and a disc shape, and is 2 in a direction perpendicular to the linear motion direction. A plurality of pole magnetized permanent magnets, a linear displacement detector that detects displacement in the linear motion direction from the linear motion scale, and a rotational displacement detector that detects displacement in the rotational direction from the magnetic field of the permanent magnet It is characterized by that.
本発明の更に他の観点による直動回転モータの位置検出装置は、回転方向および直動方向に移動する出力軸を有するモータ部と、前記出力軸の回転位置および直動位置を検出する直動回転モータの位置検出装置において、前記位置検出装置は、直動方向に一定間隔に設けた直動目盛を有する円筒状の直動スケールと、円板状で、前記直動方向に対して垂直方向に２極着磁された永久磁石と、前記直動スケールから直動方向の変位を検出する直動変位検出部と、直動方向の異なる位置に前記永久磁石の磁界から回転方向の変位を検出する複数の回転変位検出部を備えたことを特徴としている。
According to still another aspect of the present invention, a linear motion rotary motor position detection device includes a motor unit having an output shaft that moves in a rotational direction and a linear motion direction, and a linear motion that detects a rotational position and a linear motion position of the output shaft. In the position detection device for a rotary motor, the position detection device is a cylindrical linear motion scale having a linear motion scale provided at regular intervals in the linear motion direction, and has a disk shape and is perpendicular to the linear motion direction. A permanent magnet magnetized in two poles, a linear displacement detector for detecting a displacement in the linear motion direction from the linear motion scale, and a rotational displacement from the magnetic field of the permanent magnet at different positions in the linear motion direction And a plurality of rotational displacement detectors.
また、この直動回転モータの位置検出装置では、前記出力軸が特定の複数ケ所の直動位置に移動したとき、前記複数の永久磁石のいずれかが前記回転変位検出部に近接するように複数の永久磁石が配置されていてもよい。
また、この直動回転モータの位置検出装置では、前記複数の磁石は２個であって、出力軸が特定の２カ所の直動位置に移動したとき、第１の永久磁石または第２の永久磁石が、回転変位検出部に近接するように取り付けていてもよい。
Further, in the position detecting device for the linear motion rotary motor, when the output shaft moves to a specific plurality of linear motion positions, a plurality of permanent magnets are arranged so as to be close to the rotational displacement detector. Permanent magnets may be arranged .
Further, in the position detecting device for the linear motion rotary motor, the plurality of magnets are two, and when the output shaft moves to two specific linear motion positions, the first permanent magnet or the second permanent magnet. The magnet may be attached so as to be close to the rotational displacement detector .
また、この直動回転モータの位置検出装置では、前記出力軸が特定の複数ケ所の直動位置に移動したとき、前記永久磁石が前記複数の回転変位検出部のいずれかに近接するように前記回転変位検出部を設けていてもよい。
また、この直動回転モータの位置検出装置では、前記複数の回転変位検出部は２個であって、前記出力軸が特定の２カ所の直動位置に移動したときに前記回転変位検出部のいずれかが前記永久磁石に近接するように取り付けられていてもよい。
Further, in this linear motion rotary motor position detection device, when the output shaft moves to a plurality of specific linear motion positions, the permanent magnet approaches the one of the multiple rotational displacement detectors. A rotational displacement detector may be provided .
Further, in the position detecting device for the linear motion rotary motor, the plurality of rotational displacement detectors are two, and when the output shaft moves to two specific linear motion positions, the rotational displacement detector One of them may be attached so as to be close to the permanent magnet .
また、この直動回転モータの位置検出装置では、前記直動スケールは光学式スケールであり、前記直動変位検出部は反射型リニアエンコーダであってもよい。
また、この直動回転モータの位置検出装置では、前記直動スケールは磁気式スケールであり、前記直動変位検出部は磁気式センサであってもよい。
また、この直動回転モータの位置検出装置では、前記直動スケールは凹凸の形状もしくは滑らかな山谷形状を設けた軟磁性材料より形成するとともに、前記直動変位検出部はインダクタンス変化を検出する手段であってもよい。
また、この直動回転モータの位置検出装置では、前記回転変位検出部は前記出力軸の回転中心に対して複数の異なる回転角に磁界検出素子を設けてもよい。
また、この直動回転モータの位置検出装置では、前記磁界検出素子は前記出力軸回転中心に対して９０度異なる回転角にホール素子または磁気抵抗素子をおのおの設けてもよい。
本発明の更に他の観点による直動回転モータは、上記直動回転モータの位置検出装置を備えたことを特徴としている。
Further, in the position detector of the linear rotating motor, the linear scale is an optical scale, the linear displacement detector may be I Oh reflection type linear encoder.
Further, in the position detector of the linear rotating motor, the linear scale is magnetic scale, the linear displacement detector may me magnetic sensor der.
Further, in the position detecting device of the linear motion rotary motor, the linear motion scale is formed of a soft magnetic material having an uneven shape or a smooth mountain-valley shape, and the linear motion displacement detector detects an inductance change. may it der.
Further, in this position detecting device for a linear motion rotary motor, the rotational displacement detector may be provided with magnetic field detecting elements at a plurality of different rotation angles with respect to the rotation center of the output shaft .
Further, in the position detecting device for the linear motion rotary motor, the magnetic field detecting element may be provided with a Hall element or a magnetoresistive element at a rotation angle different by 90 degrees with respect to the output shaft rotation center .
A linear motion rotary motor according to still another aspect of the present invention includes the position detection device for the linear motion rotary motor.
本発明の各観点による直動回転モータの位置検出装置によると、円筒状で底面に対して水平方向に一方向に磁化された永久磁石の発生磁界を検出するので、出力軸の絶対的な回転位置の検出ができる。
また、この直動回転モータの位置検出装置によると、回転位置を検出したい特定の直動位置に円板状の磁石を配置するので、使用する磁石の体積を小さくでき、低コストで出力軸の特定の直動位置の絶対的な回転位置が検出できる。
また、この直動回転モータの位置検出装置によると、円板状の磁石を１つだけ使用するので、使用する磁石の体積をより小さくでき、低コストで出力軸の特定の直動位置の絶対的な回転位置が検出できる。
According to the position detecting device of the linear motion rotary motor according to each aspect of the present invention, the magnetic field generated by the permanent magnet magnetized in one direction in the horizontal direction with respect to the bottom surface is detected. The position can be detected.
In addition, according to the position detection device of the linear motion rotary motor, since the disk-shaped magnet is arranged at a specific linear motion position where the rotational position is to be detected, the volume of the magnet to be used can be reduced, and the output shaft The absolute rotational position of a specific linear motion position can be detected.
Further , according to the position detecting device of the linear motion rotary motor, since only one disk-shaped magnet is used, the volume of the magnet to be used can be further reduced, and the absolute position of the specific linear motion position of the output shaft can be reduced at a low cost. The rotational position can be detected.
また、この直動回転モータの位置検出装置によると、直動位置を精密に刻まれた光学スケールを用い、光学式検出手段で検出するため正確な直動位置を検出することができる。
また、この直動回転モータの位置検出装置によると、直動回転位置の検出手段が磁気式、レゾルバ式であるので周囲温度が高い用途でも使用することができる。
また、この直動回転モータの位置検出装置によると、絶対的な回転位置を演算により容易に演算できるとともに回転方向の検出ができる。
また、この直動回転モータの位置検出装置を有すれば、絶対的な回転位置に位置決め可能な直動回転モータが得られる。
Further , according to the position detecting device for the linear motion rotary motor, an accurate linear motion position can be detected because an optical scale in which the linear motion position is precisely engraved is used to detect the position.
Further , according to the position detecting device for the direct acting rotation motor, the detecting means for the direct acting rotational position is a magnetic type or a resolver type, so that it can be used even in applications where the ambient temperature is high.
Further , according to the position detection device for the linear motion rotary motor , the absolute rotation position can be easily calculated by calculation and the rotation direction can be detected.
Further, if the position detecting device for the linear motion rotary motor is provided, a linear motion rotary motor that can be positioned at an absolute rotational position can be obtained.
Claims (8)
前記出力軸に連結され、円筒状を有し、前記直動方向に対して垂直方向に、２極に着磁された永久磁石と、
前記直動スケールから、前記出力軸の直動方向の変位を検出する直動変位検出部と、
前記永久磁石の磁界から、前記出力軸の回転方向の変位を検出する回転変位検出部と、
を備えた、直動回転モータの位置検出装置。 A cylindrical linear motion scale having linear motion graduations connected to the output shaft of the motor unit having an output shaft that moves in the rotational direction and the linear motion direction ;
A permanent magnet coupled to the output shaft, having a cylindrical shape and magnetized in two poles in a direction perpendicular to the linear motion direction;
A linear displacement detector that detects displacement in the linear motion direction of the output shaft from the linear motion scale;
A rotational displacement detector that detects displacement in the rotational direction of the output shaft from the magnetic field of the permanent magnet ;
A position detection device for a linear motion rotary motor.
With a position detecting device of the linear rotating motor of any one of claims 1 to 7, direct acting rotation motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008227792A JP5200778B2 (en) | 2008-09-05 | 2008-09-05 | Linear motion rotary motor position detection device and linear motion rotary motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008227792A JP5200778B2 (en) | 2008-09-05 | 2008-09-05 | Linear motion rotary motor position detection device and linear motion rotary motor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010060478A JP2010060478A (en) | 2010-03-18 |
| JP2010060478A5 true JP2010060478A5 (en) | 2012-01-26 |
| JP5200778B2 JP5200778B2 (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2008227792A Expired - Fee Related JP5200778B2 (en) | 2008-09-05 | 2008-09-05 | Linear motion rotary motor position detection device and linear motion rotary motor |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5764929B2 (en) * | 2010-04-14 | 2015-08-19 | 株式会社安川電機 | Linear rotary actuator |
| JP5597158B2 (en) * | 2011-04-11 | 2014-10-01 | ヤマハ発動機株式会社 | Component mounting equipment |
| JP2014052249A (en) * | 2012-09-06 | 2014-03-20 | Tokai Rika Co Ltd | Biaxial position sensor and shift position sensor including the same |
| JP6297287B2 (en) * | 2013-09-18 | 2018-03-20 | 株式会社ミツトヨ | Rotary encoder and micrometer provided with the same |
| JP2017058328A (en) | 2015-09-18 | 2017-03-23 | 日本電産サンキョー株式会社 | Linear motion rotation detector |
| CN114583898B (en) * | 2022-03-10 | 2024-04-16 | 广东工业大学 | Device and method for detecting absolute angle of motor reducer based on ring magnet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19817356A1 (en) * | 1998-04-18 | 1999-10-21 | Bosch Gmbh Robert | Angle indicator for determining an angle between a sensor arrangement and a magnetic field |
| JP4103018B2 (en) * | 1998-09-02 | 2008-06-18 | 株式会社安川電機 | Servomotor |
| JP5261913B2 (en) * | 2005-10-21 | 2013-08-14 | 株式会社安川電機 | Linear motion actuator and system |
| JP5041401B2 (en) * | 2006-12-18 | 2012-10-03 | 古河電気工業株式会社 | Rotation sensor |
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