JP2008310564A - Rotary type finite angle detector - Google Patents
Rotary type finite angle detector Download PDFInfo
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Abstract
Description
本発明は、回転型有限角度検出器に関し、特に、輪状ステータの一対の１８０度対称位置で、巻線を有する突出磁極を所定の角度範囲のみに配設して一対のチャンネルセンサを形成し、各チャンネルセンサの出力信号の和を用いることにより、輪状ステータとロータ間の偏芯や傾きなどの取り付け誤差影響を低減するための新規な改良に関する。 The present invention relates to a rotary finite angle detector, and in particular, at a pair of 180-degree symmetrical positions of a ring-shaped stator, a pair of channel sensors is formed by disposing protruding magnetic poles having windings only in a predetermined angle range, The present invention relates to a novel improvement for reducing the influence of mounting errors such as eccentricity and inclination between a ring-shaped stator and a rotor by using the sum of output signals of channel sensors.
従来、用いられていたこの種の回転型有限角度検出器としては、例えば、図２に示される構成を挙げることができるが、本出願人が社内で開発したのみで特許出願を行っていないため、ここでは、その構成を示す特許文献は開示していない。
図２において符号１で示されるものは、例えば、１００度の範囲の予め設定された有限角を有する有限角ステータであり、この有限角ステータ１の内面１ａには、複数の突出磁極２が所定角度間隔で配設されている。
As this type of rotational finite angle detector that has been used in the past, for example, the configuration shown in FIG. 2 can be cited. However, since the applicant has only developed in-house and has not filed a patent application. Here, patent literature showing the configuration is not disclosed.
2 is a finite angle stator having a preset finite angle in a range of 100 degrees, for example, and a plurality of projecting magnetic poles 2 are predetermined on the inner surface 1a of the finite angle stator 1. They are arranged at angular intervals.
前記各突出磁極２には、周知の励磁巻線３ａと出力巻線３ｂとからなる巻線３が巻回されている。
前記有限角ステータ１の内側には、有限角に形成された扇形のコア（鉄芯等）のみからなる有限角ロータ４が所定有限角の範囲で回転自在に設けられ、この有限角ロータ４の有限角回転に応じて、有限角ロータ４の回転角度位置を検出することができる。
A winding 3 composed of a well-known excitation winding 3a and output winding 3b is wound around each protruding magnetic pole 2.
Inside the finite-angle stator 1, a finite-angle rotor 4 consisting only of a fan-shaped core (iron core or the like) formed at a finite angle is rotatably provided within a range of a predetermined finite angle. The rotational angle position of the finite angle rotor 4 can be detected according to the finite angle rotation.
従来の回転型有限角度検出器は、以上のように構成されていたため、次のような課題が存在していた。
すなわち、１個の有限角ステータに対して１個の有限角ロータが組合せられた構成であるため、１チャンネルセンサしか構成されておらず、例えば、有限角ステータ又は有限角ロータに対して、取付けによる偏芯や傾きなどの取り付け誤差があった場合に、回転角度位置の誤差となり、有限角度検出器としての検出精度が著しく低下することになっていた。
Since the conventional rotary type finite angle detector is configured as described above, the following problems exist.
That is, since one finite angle rotor is combined with one finite angle stator, only one channel sensor is configured. For example, it is attached to a finite angle stator or a finite angle rotor. When there is an attachment error such as eccentricity or inclination due to the above, it becomes an error of the rotational angle position, and the detection accuracy as a finite angle detector is remarkably lowered.
本発明による回転型有限角度検出器は、輪状をなす輪状ステータと、前記輪状ステータの少なくとも所定の第１角度範囲に形成された複数の第１突出磁極と、前記輪状ステータの前記第１角度範囲と対向する少なくとも所定の第２角度範囲に形成された複数の第２突出磁極と、前記各第１突出磁極に巻回された第１チャンネル用の第１巻線と、前記各第２突出磁極に巻回された第２チャンネル用の第２巻線と、前記輪状ステータの内側に回転自在に設けられコアのみからなると共に外周が半径方向に沿って凹凸状に変化する少なくとも第１、第２凸部を有するロータと、を備え、前記各第１突出磁極と前記各第１巻線及び前記第１凸部により第１チャンネルセンサを形成し、前記各第２突出磁極と前記各第２巻線及び前記第２凸部により第２チャンネルセンサを形成し、前記輪状ステータとロータとは同一軸芯に配設され、前記各第１突出磁極と各第２突出磁極とは互いに１８０度対称に配置され、前記ロータの前記第１凸部と第２凸部とは互いに１８０度対称に配置され、前記ロータの有限角回転により前記第１、第２チャンネルセンサから得られる出力信号の和を用いて、前記ロータの有限角位置を検出する構成であり、また、前記輪状ステータの内面前記第１突出磁極と第２突出磁極との間には、突出磁極が形成されていない構成であり、また、前記輪状ステータの内面の前記第１突出磁極と第２突出磁極との間には、巻線を有しない複数の突出磁極が形成されている構成であり、また、前記第１突出磁極と第２突出磁極の数は同一とした構成であり、また、前記各第１巻線同志、及び、前記各第２巻線同志は、互いに直列接続されるか、又は、並列に接続されている構成である。 The rotary finite angle detector according to the present invention includes a ring-shaped stator having a ring shape, a plurality of first projecting magnetic poles formed in at least a predetermined first angle range of the ring-shaped stator, and the first angle range of the ring-shaped stator. A plurality of second projecting magnetic poles formed in at least a predetermined second angle range facing each other, a first winding for a first channel wound around each first projecting magnetic pole, and each second projecting magnetic pole A second winding for the second channel wound around the ring-shaped stator, and at least first and second at least first and second whose outer periphery changes in a radial direction along the radial direction. And a first channel sensor formed by the first protruding magnetic poles, the first windings, and the first protruding portions, and the second protruding magnetic poles and the second windings. The second by the line and the second convex part Forming a channel sensor, wherein the ring-shaped stator and the rotor are disposed on the same axis, the first projecting magnetic poles and the second projecting magnetic poles are disposed 180 degrees symmetrical to each other, and the first convex portion of the rotor And the second convex part are arranged 180 degrees symmetrical to each other, and a finite angle position of the rotor is detected using a sum of output signals obtained from the first and second channel sensors by a finite angle rotation of the rotor. And a projecting magnetic pole is not formed between the first projecting magnetic pole and the second projecting magnetic pole on the inner surface of the annular stator, and the first projecting on the inner surface of the annular stator. A plurality of protruding magnetic poles having no winding are formed between the magnetic pole and the second protruding magnetic pole, and the number of the first protruding magnetic poles and the second protruding magnetic poles is the same. And each of the first windings Zhi, and, each second coil each other are either connected in series to each other, or a configuration that is connected in parallel.
本発明による回転型有限角度検出器は、以上のように構成されているため、次のような効果を得ることができる。
すなわち、輪状ステータの１８０度対称位置に巻線を有する複数の突出磁極を所定の角度範囲に配置して有限角度検出することで、半径方向の輪状ステータとロータの取り付け偏芯や傾きが発生した場合においても、各方向の出力信号である出力電圧は間隙が大きくなった方向で減少、ギャップが小さくなった方向で増加となる。
従って、一対のチャンネルセンサからの出力電圧の増減の和は偏芯等のない状態とほぼ一致した出力電圧になり、その結果、輪状ステータとロータの相対的な偏芯や傾きによる出力電圧変化を低減し、有限角の高精度検出を得ることができる。
また、輪状ステータは従来の有限角ステータと異なり輪状に形成されているため、輪状ステータの強度が高く取付剛性を上げることができ、車輌等に搭載する場合には高い信頼性を得ることができる。
Since the rotary type finite angle detector according to the present invention is configured as described above, the following effects can be obtained.
That is, a plurality of projecting magnetic poles having windings at 180 ° symmetrical positions of the ring-shaped stator are arranged in a predetermined angle range to detect a finite angle, thereby causing eccentric mounting and inclination of the ring-shaped stator and rotor in the radial direction. Even in this case, the output voltage, which is an output signal in each direction, decreases in the direction in which the gap becomes larger and increases in the direction in which the gap becomes smaller.
Therefore, the sum of the increase and decrease of the output voltage from the pair of channel sensors is an output voltage that almost matches the state without eccentricity, and as a result, the output voltage change due to the relative eccentricity and inclination of the annular stator and the rotor. It is possible to reduce and obtain high-precision detection of a finite angle.
Further, since the ring-shaped stator is formed in a ring shape unlike a conventional finite-angle stator, the strength of the ring-shaped stator is high and the mounting rigidity can be increased, and high reliability can be obtained when mounted on a vehicle or the like. .
本発明は、輪状ステータの一対の１８０度対称位置で、巻線を有する突出磁極を所定の角度範囲のみに配設して一対のチャンネルセンサを形成し、各チャンネルセンサの出力信号の和を用いることにより、輪状ステータとロータ間の偏芯や傾きなどの取付け誤差影響を低減するようにした回転型有限角度検出器を提供することを目的とする。 The present invention forms a pair of channel sensors by arranging protruding magnetic poles having windings only in a predetermined angle range at a pair of 180-degree symmetrical positions of a ring-shaped stator, and uses the sum of output signals of the channel sensors. Accordingly, an object of the present invention is to provide a rotary type finite angle detector that reduces the influence of mounting errors such as eccentricity and inclination between the annular stator and the rotor.
以下、図面と共に本発明による回転型有限角度検出器の好適な実施の形態について説明する。
尚、従来例と同一又は同等部分には同一符号を付して説明する。
図１において符号１で示されるものは全体形状が輪状をなす輪状ステータであり、この輪状ステータ１の内面１ａの所定の第１角度範囲θには、複数の第１突出磁極２が所定の角度間隔毎に内方へ向けて突出して形成されている。
Hereinafter, preferred embodiments of a rotary finite angle detector according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
A reference numeral 1 in FIG. 1 indicates a ring-shaped stator having an annular shape as a whole, and a plurality of first projecting magnetic poles 2 have a predetermined angle within a predetermined first angle range θ of the inner surface 1a of the ring-shaped stator 1. It protrudes inward at every interval.
前記輪状ステータ１の内面１ａの前記第１角度範囲θに対して１８０度対向する第２角度範囲θ’には、複数の第２突出磁極２Ａが所定の角度間隔毎に内方へ向けて突出して形成されている。
前記各第１突出磁極２と各第２突出磁極２Ａとは、直径方向線Ａからみて１８０度対称となるように構成されている。
A plurality of second projecting magnetic poles 2A project inwardly at predetermined angular intervals in a second angle range θ ′ opposed to the first angle range θ of the inner surface 1a of the annular stator 1 by 180 degrees. Is formed.
Each of the first protruding magnetic poles 2 and each of the second protruding magnetic poles 2A are configured to be 180 degrees symmetrical with respect to the diameter direction line A.
前記各第１突出磁極２には、周知のバリアブルリラクタンス（ＶＲ）型のレゾルバと同様な巻線である励磁巻線３ａと出力巻線３ｂとからなる第１チャンネル用の第１巻線３が巻回されている。
また、前記各第２突出磁極２Ａには、前述と同様の励磁巻線３ａと出力巻線３ｂとからなる第２チャンネル用の第２巻線３Ａが巻回されている。
Each of the first projecting magnetic poles 2 has a first winding 3 for a first channel, which is composed of an excitation winding 3a and an output winding 3b, which are the same windings as a known variable reluctance (VR) type resolver. It is wound.
The second projecting magnetic pole 2A is wound with a second channel winding 3A composed of an excitation winding 3a and an output winding 3b similar to those described above.
前記輪状ステータ１の内側には、その外周が半径方向に沿って凹凸状に変化する少なくとも第１、第２凸部４Ａ、４Ｂを有する周知のコアのみ（巻線を有しない）からなる輪状のロータ４が図示しない回転軸を介して前記輪状ステータ１と同一軸芯Ｐで回転自在に設けられている。
前記各第１突出磁極２と前記第１巻線３及び前記第１凸部４Ａにより有限角検出器としての第１チャンネルセンサ１０が形成され、前記各第２突出磁極２Ａと前記第２巻線３Ａ及び前記第２凸部４Ｂにより有限角検出器としての第２チャンネルセンサ１１が形成されている。
On the inner side of the ring-shaped stator 1, a ring-shaped ring composed of only a known core (having no windings) having at least first and second convex portions 4A and 4B whose outer periphery changes in a concavo-convex shape along the radial direction. A rotor 4 is rotatably provided on the same axis P as that of the annular stator 1 via a rotating shaft (not shown).
Each of the first protruding magnetic poles 2, the first winding 3, and the first convex portion 4A form a first channel sensor 10 as a finite angle detector, and each of the second protruding magnetic poles 2A and the second winding. A second channel sensor 11 as a finite angle detector is formed by 3A and the second convex portion 4B.
尚、前記輪状ステータ１の内面１ａにおいて、前記各第１突出磁極２と各第２突出磁極２Ａとの間の位置には、図１では、各突出磁極２、２Ａと同一等の突出磁極は何ら形成されていない構成としているが、例えば、プレス加工時各突出磁極２、２Ａを前記内面１ａの全周にわたり所定間隔で形成し、前記第１、第２角度範囲θ、θ’のみの各突出磁極２、２Ａに前記第１巻線３と第２巻線３Ａを巻回すると、図１に示される第１巻線３を有する各第１突出磁極２と、第２巻線３Ａを有する各第２突出磁極２Ａを形成することができる。 Incidentally, in the inner surface 1a of the ring-shaped stator 1, in the position between each of the first protruding magnetic poles 2 and each of the second protruding magnetic poles 2A, in FIG. Although not formed at all, for example, at the time of pressing, the protruding magnetic poles 2 and 2A are formed at predetermined intervals over the entire circumference of the inner surface 1a, and each of the first and second angular ranges θ and θ ′ only When the first winding 3 and the second winding 3A are wound around the protruding magnetic poles 2 and 2A, the first protruding magnetic pole 2 having the first winding 3 shown in FIG. 1 and the second winding 3A are provided. Each second protruding magnetic pole 2A can be formed.
従って、前述の場合、前記内面１ａの各第１、第２突出磁極２、２Ａ間には巻線を有しない突出磁極が残ることになるが、有限角検出には何ら支障はなく、積層型の輪状ステータ１の場合、その積層時の転積が可能となる。 Accordingly, in the above-described case, a protruding magnetic pole having no winding remains between the first and second protruding magnetic poles 2 and 2A of the inner surface 1a. In the case of the ring-shaped stator 1, it is possible to roll over at the time of lamination.
次に、前述の構成において、各励磁巻線３ａ、３ａに励磁信号を印加した状態で、前記ロータ４に接続された回転軸（図示せず）を所定の有限角に沿って回転させると、周知のバリアブルリラクタンス型のＶＲ型レゾルバの動作と同様に、輪状ステータ１とロータ４との間隙Ｄに沿うギャップパーミアンスの変化に従って、第１チャンネルセンサ１０と第２チャンネルセンサ１１における第１、第２巻線３、３Ａの各出力巻線３ｂ、３ｂから出力される有限角回転位置を示す各出力信号の和を取ることにより、半径方向の輪状ステータ１とロータ４の取り付け偏芯や傾きが発生した場合、ロータ４が回転する各回転方向の出力信号である出力電圧は、ロータ４の各凸部４Ａ、４Ｂと各突出磁極２、２Ａ間の間隙Ｄが大きくなった方向で減少、この間隙Ｄが小さくなった方向で増加となる。
Next, in the above-described configuration, when a rotating shaft (not shown) connected to the rotor 4 is rotated along a predetermined finite angle while an excitation signal is applied to each excitation winding 3a, 3a, Similar to the operation of the known variable reluctance type VR resolver, the first and second channel sensors 10 and 11 in the first channel sensor 10 and the second channel sensor 11 change according to the gap permeance change along the gap D between the annular stator 1 and the rotor 4. By taking the sum of the output signals indicating the finite angle rotational positions output from the
従って、一対の各チャンネルセンサ１０、１１からの出力信号（出力電圧）の増減の和は、偏芯等のない状態で検出した出力信号とほぼ一致した出力信号になり、その結果、輪状ステータ１とロータ４の相対的な偏芯や傾きによる出力電圧変化を低減し、有限回転角度位置の高精度検出を得ることができる。
また、前記輪状ステータ１は、従来の有限角ステータとは異なって輪状に形成されているため、輪状ステータ１を他の装置に取付ける際の取付剛性を向上させることができ、さらに、ロータ４を回転させるだけでなく、ロータ４を固定側とし、輪状ステータ１を回転側とすることも可能である。
Therefore, the sum of the increase / decrease of the output signals (output voltages) from the pair of channel sensors 10 and 11 is an output signal that substantially matches the output signal detected without any eccentricity. As a result, the annular stator 1 The output voltage change due to the relative eccentricity and inclination of the rotor 4 can be reduced, and high-precision detection of the finite rotation angle position can be obtained.
Further, since the ring-shaped stator 1 is formed in a ring shape unlike a conventional finite angle stator, it is possible to improve the mounting rigidity when the ring-shaped stator 1 is mounted on another device. In addition to rotation, the rotor 4 can be a fixed side and the annular stator 1 can be a rotation side.
１ 輪状ステータ
１ａ 内面
２ 第１突出磁極
２Ａ 第２突出磁極
３ 第１巻線
３Ａ 第２巻線
３ａ 励磁巻線
３ｂ 出力巻線
４ ロータ
４Ａ 第１凸部
４Ｂ 第２凸部
１０ 第１チャンネルセンサ
１１ 第２チャンネルセンサ
θ 第１角度範囲
θ’ 第２角度範囲
Ｄ 間隙
Ａ 直径方向線
Ｐ 同一軸芯
DESCRIPTION OF SYMBOLS 1 Ring-shaped stator 1a Inner surface 2 1st protrusion magnetic pole 2A 2nd protrusion magnetic pole 3 1st winding 3A
Claims (5)
前記各第１突出磁極(2)と前記各第１巻線(3)及び前記第１凸部(4A)により第１チャンネルセンサ(10)を形成し、
前記各第２突出磁極(2A)と前記各第２巻線(3A)及び前記第２凸部(4B)により第２チャンネルセンサ(11)を形成し、
前記輪状ステータ(1)とロータ(4)とは同一軸芯(P)に配設され、前記各第１突出磁極(2)と各前記第２突出磁極(2A)とは互いに１８０度対称に配置され、前記ロータ(4)の前記第１凸部(4A)と第２凸部(4B)とは互いに１８０度対称に配置され、
前記ロータ(4)の有限角回転により前記第１、第２チャンネルセンサ(10,11)から得られる出力信号の和を用いて、前記ロータ(4)の有限角位置を検出することを特徴とする回転型有限角度検出器。 An annular stator (1) having an annular shape, a plurality of first projecting magnetic poles (2) formed in at least a predetermined first angle range (θ) of the annular stator (1), and the annular stator (1) A plurality of second projecting magnetic poles (2A) formed in at least a predetermined second angle range (θ ′) facing the first angle range (θ), and wound around each of the first projecting magnetic poles (2) A first winding (3) for the first channel, a second winding (3A) for the second channel wound around each second protruding magnetic pole (2A), and the inner side of the annular stator (1) And a rotor (4) having at least first and second convex portions (4A, 4B) which are provided rotatably and have only a core and whose outer periphery changes in a concavo-convex shape along the radial direction,
A first channel sensor (10) is formed by the first protruding magnetic poles (2), the first windings (3), and the first protrusions (4A).
A second channel sensor (11) is formed by the second projecting magnetic poles (2A), the second windings (3A), and the second protrusions (4B).
The annular stator (1) and the rotor (4) are disposed on the same axis (P), and the first projecting magnetic poles (2) and the second projecting magnetic poles (2A) are symmetrical with each other by 180 degrees. The first protrusions (4A) and the second protrusions (4B) of the rotor (4) are disposed symmetrically with each other by 180 degrees;
A finite angle position of the rotor (4) is detected using a sum of output signals obtained from the first and second channel sensors (10, 11) by a finite angle rotation of the rotor (4). Rotating finite angle detector.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115555A (en) * | 2013-01-16 | 2013-05-22 | 宁波钢铁有限公司 | Magnetic motor rotor angle positioning instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140020A (en) * | 1985-12-16 | 1987-06-23 | Toshiro Higuchi | Multifunctional detector |
| JPH06129873A (en) * | 1992-10-22 | 1994-05-13 | Akira Ishizaki | Position detecting apparatus |
| WO2002025216A1 (en) * | 2000-09-19 | 2002-03-28 | Honda Giken Kogyo Kabushiki Kaisha | Rotational position detector and motor equipped with rotational position detector |
| JP2002119032A (en) * | 2000-10-03 | 2002-04-19 | Tamagawa Seiki Co Ltd | Iron core structure of rotation detector |
| JP2002168652A (en) * | 2000-11-30 | 2002-06-14 | Sanyo Denki Co Ltd | nX RELUCTANCE RESOLVER |
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2007
- 2007-06-14 JP JP2007157346A patent/JP4992022B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140020A (en) * | 1985-12-16 | 1987-06-23 | Toshiro Higuchi | Multifunctional detector |
| JPH06129873A (en) * | 1992-10-22 | 1994-05-13 | Akira Ishizaki | Position detecting apparatus |
| WO2002025216A1 (en) * | 2000-09-19 | 2002-03-28 | Honda Giken Kogyo Kabushiki Kaisha | Rotational position detector and motor equipped with rotational position detector |
| JP2002119032A (en) * | 2000-10-03 | 2002-04-19 | Tamagawa Seiki Co Ltd | Iron core structure of rotation detector |
| JP2002168652A (en) * | 2000-11-30 | 2002-06-14 | Sanyo Denki Co Ltd | nX RELUCTANCE RESOLVER |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115555A (en) * | 2013-01-16 | 2013-05-22 | 宁波钢铁有限公司 | Magnetic motor rotor angle positioning instrument |
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| JP4992022B2 (en) | 2012-08-08 |
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