JP2939950B2 - Resolver - Google Patents
ResolverInfo
- Publication number
- JP2939950B2 JP2939950B2 JP14798691A JP14798691A JP2939950B2 JP 2939950 B2 JP2939950 B2 JP 2939950B2 JP 14798691 A JP14798691 A JP 14798691A JP 14798691 A JP14798691 A JP 14798691A JP 2939950 B2 JP2939950 B2 JP 2939950B2
- Authority
- JP
- Japan
- Prior art keywords
- inductor
- iron core
- magnetic pole
- yoke
- resolver
- 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
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、モータの回転位置や移
動体の位置などを検出するインダクタ形レゾルバに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inductor type resolver for detecting a rotational position of a motor and a position of a moving body.
【０００２】[0002]
【従来の技術】従来、回転形のインダクタ形レゾルバは
検出ヘッドをリング状の鉄心からなる固定子で構成し、
固定子の内周に複数の磁極を設け、固定子の内周に空隙
を介して対向し、固定子の磁極数と異なる複数の磁極を
備えた回転形のインダクタを設け、固定子に励磁巻線と
検出巻線を備えている。2. Description of the Related Art Conventionally, a rotary inductor resolver has a detection head composed of a stator made of a ring-shaped iron core.
A plurality of magnetic poles are provided on the inner periphery of the stator, and a rotating inductor having a plurality of magnetic poles different from the number of magnetic poles of the stator is provided on the inner periphery of the stator with a gap therebetween. With wires and sensing windings.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記構成で
はインダクタの全周をリング状の固定子で囲み、かつ固
定子の全周にわたって励磁巻線と検出巻線が設けられて
いるので、レゾルバ全体の大きさはインダクタの外周よ
り極めて大きくなり、小形化が難しいという欠点があっ
た。本発明は、検出ヘッドをピックアップ形として小形
のレゾルバを提供することを目的とするものである。However, in the above configuration, the entire periphery of the inductor is surrounded by a ring-shaped stator, and the excitation winding and the detection winding are provided over the entire periphery of the stator. Is extremely larger than the outer periphery of the inductor, and it is difficult to reduce the size. SUMMARY OF THE INVENTION It is an object of the present invention to provide a small-sized resolver having a pickup head as a detection head.
【０００４】[0004]
【課題を解決するための手段】本発明は、複数の鉄心歯
を有するインダクタと、前記鉄心歯に空隙を介して対向
する磁極歯を有しヨーク部に励磁巻線と検出巻線を設け
た検出ヘッドを備えたレゾルバにおいて、前記インダク
タの移動方向に沿って設けられた二つの互いに平行な前
記ヨーク部を中央部で連結部によって結合してＨ字状に
形成し、前記二つのヨーク部の両端部に磁極歯を形成
し、前記インダクタと前記検出ヘッドとの間にパーミア
ンス変化の位相差が９０°生じるように二つの磁気回路
を形成したものである。According to the present invention, an inductor having a plurality of iron core teeth, and magnetic pole teeth opposed to the iron core teeth via a gap, and an excitation winding and a detection winding are provided in a yoke portion. In a resolver provided with a detection head, two parallel yoke portions provided along the moving direction of the inductor are connected to each other at a central portion by a connecting portion to form an H shape, and the two yoke portions Magnetic pole teeth are formed at both ends, and two magnetic circuits are formed so that a phase difference of a permeance change of 90 ° occurs between the inductor and the detection head.
【０００５】[0005]
【作用】検出ヘッドのヨーク部をインダクタの移動方向
に沿って形成された二つの互いに平行なヨーク部を中央
部で連結部によって結合し、Ｈ字状に形成して、その両
端部に形成した磁極歯とインダクタの鉄心歯とを対向さ
せ、インダクタと検出ヘッドとの間にパーミアンス変化
が９０°位相差を生じるように二つの磁気回路を形成し
ているので、検出ヘッドはインダクタの一部分だけに対
向し、全体に対向する必要がなく、検出ヘッドのヨーク
部および検出巻線の占めるスペースも小さくなる。The yoke portion of the detection head is formed by joining two parallel yoke portions formed along the direction of movement of the inductor by a connecting portion at the center portion to form an H shape, and formed at both ends thereof. The magnetic pole teeth and the iron core teeth of the inductor are opposed to each other, and two magnetic circuits are formed so that the permeance change causes a 90 ° phase difference between the inductor and the detection head. It is not necessary to face each other, and the space occupied by the yoke portion and the detection winding of the detection head is reduced.
【０００６】[0006]
【実施例】本発明を図に示す実施例について説明する。
図１は本発明の実施例を示す正面図、図２（ａ）は側面
図で、インダクタ１の外周には円周方向に等間隔に複数
の鉄心歯１１が設けられている。検出ヘッド２の鉄心部
３はインダクタ１の外周に沿って円弧状に形成された二
つの互いに平行なヨーク部３１と３２が中央部で連結部
３３によって結合され、Ｈ字状に形成されてインダクタ
１との間に二つの磁気回路を形成している。ヨーク部３
１の両端にはインダクタ１の二つの鉄心歯１１Ａ，１１
Ｂに対して空隙を介して対向する二つの磁極歯３４Ａ，
３４Ｂを設けている。ヨーク部３２の両端には磁極歯３
４Ａ，３４Ｂに対して、図３に示すように、パーミアン
ス変化の位相差が９０°出るように磁極歯３４Ｃ，３４
Ｄを設けてある。すなわち、鉄心歯１１のピッチをＴと
すると、磁極歯３４Ａ，３４Ｂが鉄心歯１１Ａ，１１Ｂ
に対面する位置にある場合、磁極歯３４Ｃ，３４ＤはＴ
／４だけずれた位置で鉄心歯１１Ａ，１１Ｂに対向する
ようにしてあるので、磁極歯３４Ａ，３４Ｂのパーミア
ンスρA-B と磁極歯３４Ｃ，３４Ｄのパーミアンスρ
C-D との関係は図３に示すように９０°位相差ができ
る。励磁巻線４は連結部３３に巻付けてあり、検出巻線
５はヨーク部３１に、検出巻線６はヨーク部３２に巻付
けてある。したがって、インダクタ１が回転することに
よって検出巻線５と６には位相差９０°の信号波形が得
られる。なお、検出ヘッド２を図２（ｂ）に示すよう
に、回転方向に対してスキュー角Δθだけ傾けて取りつ
けることにより二つの磁気回路のパーミアンス変化が正
弦波と余弦波に近づけることができ、検出精度を向上さ
せることができる。また、以上は回転形レゾルバの構成
について述べたが、リニア形についても同様に適用でき
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2A is a side view. A plurality of iron core teeth 11 are provided on an outer periphery of an inductor 1 at equal intervals in a circumferential direction. The core part 3 of the detection head 2 is formed in an H shape by connecting two mutually parallel yoke parts 31 and 32 formed in an arc shape along the outer periphery of the inductor 1 by a connecting part 33 at a center part. Two magnetic circuits are formed between the two magnetic circuits. Yoke part 3
The two core teeth 11A and 11 of the inductor 1
B, two magnetic pole teeth 34A facing each other via a gap,
34B. Magnetic pole teeth 3 at both ends of the yoke portion 32
As shown in FIG. 3, the magnetic pole teeth 34C and 34B have a phase difference of 90 ° with respect to 4A and 34B.
D is provided. That is, assuming that the pitch of the iron core teeth 11 is T, the magnetic pole teeth 34A, 34B become the iron core teeth 11A, 11B.
, The magnetic pole teeth 34C and 34D
/ 4, so as to oppose the iron core teeth 11A, 11B, the permeance ρ AB of the magnetic pole teeth 34A, 34B and the permeance ρ AB of the magnetic pole teeth 34C, 34D.
As shown in FIG. 3, there is a 90 ° phase difference with respect to CD . The excitation winding 4 is wound around the connecting portion 33, the detection winding 5 is wound around the yoke 31, and the detection winding 6 is wound around the yoke 32. Accordingly, a signal waveform having a phase difference of 90 ° is obtained in the detection windings 5 and 6 by the rotation of the inductor 1. As shown in FIG. 2B, the permeance change of the two magnetic circuits can be approximated to a sine wave and a cosine wave by mounting the detection head 2 at a skew angle Δθ with respect to the rotation direction, as shown in FIG. Accuracy can be improved. Further, although the configuration of the rotary resolver has been described above, the present invention can be similarly applied to a linear resolver.
【０００７】[0007]
【発明の効果】以上述べたように、本発明によれば、検
出ヘッドがインダクタの全周にわたって囲むことがない
ので、検出ヘッドのヨーク部や励磁巻線、検出巻線が占
めるスぺースが小さくなり、小形、軽量化が可能となり
コストが低減される効果がある。As described above, according to the present invention, since the detection head does not surround the entire circumference of the inductor, the space occupied by the yoke, the exciting winding, and the detection winding of the detection head is reduced. It is possible to reduce the size, reduce the size and weight, and reduce the cost.
【図１】本発明の実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】（ａ）図１の側面図である。FIG. 2 (a) is a side view of FIG.
【図２】（ｂ）本発明の他の実施例を示す側面図であ
る。FIG. 2 (b) is a side view showing another embodiment of the present invention.
【図３】磁気回路のパーミアンス変化の説明図である。FIG. 3 is an explanatory diagram of a change in permeance of a magnetic circuit.
１ インダクタ １１、１１Ａ、１１Ｂ 鉄心歯 ２ 検出ヘッド ３ 鉄心部 ３１、３２ ヨーク部 ３３連結部 ３４Ａ，３４Ｂ，３４Ｃ，３４Ｃ 磁極歯 ４ 励磁巻線 ５、６ 検出巻線 DESCRIPTION OF SYMBOLS 1 Inductor 11, 11A, 11B Iron core tooth 2 Detection head 3 Iron core part 31, 32 Yoke part 33 Connection part 34A, 34B, 34C, 34C Magnetic pole tooth 4 Excitation winding 5, 6 Detection winding
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−176454（ＪＰ，Ａ) 実開 昭60−147978（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H02K 24/00 ────────────────────────────────────────────────── (5) References JP-A-60-176454 (JP, A) JP-A-60-147978 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H02K 24/00
Claims (1)
記鉄心歯に空隙を介して対向する磁極歯を有しヨーク部
に励磁巻線と検出巻線を設けた検出ヘッドを備えたレゾ
ルバにおいて、前記インダクタの移動方向に沿って設け
られた二つの互いに平行な前記ヨーク部を中央部で連結
部によって結合してＨ字状に形成し、前記ヨーク部の両
端部に磁極歯を形成し、前記インダクタと前記検出ヘッ
ドとの間にパーミアンス変化の位相差が９０°生じるよ
うに二つの磁気回路を形成したことを特徴とするレゾル
バ。1. A resolver comprising: an inductor having a plurality of iron core teeth; and a detection head having magnetic pole teeth opposed to the iron core teeth via a gap and having an excitation winding and a detection winding provided in a yoke portion. The two parallel yoke portions provided along the moving direction of the inductor are connected to each other at a central portion by a connecting portion to form an H shape, and magnetic pole teeth are formed at both ends of the yoke portion. A resolver, wherein two magnetic circuits are formed so that a phase difference of permeance change occurs between the inductor and the detection head by 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14798691A JP2939950B2 (en) | 1991-05-22 | 1991-05-22 | Resolver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14798691A JP2939950B2 (en) | 1991-05-22 | 1991-05-22 | Resolver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05252711A JPH05252711A (en) | 1993-09-28 |
| JP2939950B2 true JP2939950B2 (en) | 1999-08-25 |
Family
ID=15442582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14798691A Expired - Fee Related JP2939950B2 (en) | 1991-05-22 | 1991-05-22 | Resolver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2939950B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3911670B2 (en) * | 2002-03-27 | 2007-05-09 | ミネベア株式会社 | Rotation position detector |
| JP4225150B2 (en) * | 2003-08-12 | 2009-02-18 | アイシン・エィ・ダブリュ株式会社 | Electric drive control device and electric drive control method |
| JP3751311B1 (en) | 2005-06-09 | 2006-03-01 | 山洋電気株式会社 | Inductor type resolver |
| JP5135277B2 (en) * | 2009-04-23 | 2013-02-06 | 株式会社アミテック | Rotary position detector |
-
1991
- 1991-05-22 JP JP14798691A patent/JP2939950B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05252711A (en) | 1993-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 9 Free format text: PAYMENT UNTIL: 20080618 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 10 Free format text: PAYMENT UNTIL: 20090618 |
|
| LAPS | Cancellation because of no payment of annual fees |