JPS6217470B2 - - Google Patents
Info
- Publication number
- JPS6217470B2 JPS6217470B2 JP53082196A JP8219678A JPS6217470B2 JP S6217470 B2 JPS6217470 B2 JP S6217470B2 JP 53082196 A JP53082196 A JP 53082196A JP 8219678 A JP8219678 A JP 8219678A JP S6217470 B2 JPS6217470 B2 JP S6217470B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency generator
- magnet
- frequency
- field magnet
- faces
- 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
Links
- 238000004804 winding Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 230000004907 flux Effects 0.000 description 9
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Brushless Motors (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【発明の詳細な説明】
本発明は電動機の回転速度に応じた周波数（ま
たはパルス数）の信号を得る周波数発電機を具備
した電動機に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motor equipped with a frequency generator that obtains a signal with a frequency (or number of pulses) corresponding to the rotational speed of the motor.
一般に、周波数発電機を電動機内に同軸的に一
体に組込み、その周波数発電機から得られる周波
数信号によつて、電動機の回転速度を定速に制御
するようにした場合、制御特性が良好で、周囲温
度による影響を受けにくいなどのメリツトがある
反面、周波数信号の検出誤差は電動機の回転むら
となつて現われるため、多大の支障を来たすこと
がある。 Generally, when a frequency generator is coaxially integrated into a motor and the rotational speed of the motor is controlled at a constant speed by the frequency signal obtained from the frequency generator, the control characteristics are good. Although it has the advantage of being less susceptible to the effects of ambient temperature, detection errors in the frequency signal appear as uneven rotation of the motor, which can cause a great deal of trouble.
従来の矩形波状発電コイルによる磁気変化形周
波数発電方式では電動機からの磁束による磁気誘
導ノイズが問題となる場合が構造上生じ易い。 In the conventional magnetically variable frequency power generation system using a rectangular waveform power generation coil, magnetic induction noise due to magnetic flux from the motor tends to be a problem due to its structure.
本発明は、そのような問題を解決するもので、
以下に、その実施例を図面に基いて説明する。 The present invention solves such problems,
Examples thereof will be described below based on the drawings.
第１図は本発明の一実施例を示す要部側断面図
であり、また、第２図は同実施例における周波数
発電機の固定子部の平面図である。それらの図面
において、軸受１には回転軸２が回転自在に支承
されており、その回転軸２には円板状の磁気帰路
用磁性体鉄板３がスペーサ４を介して固着されて
いる。 FIG. 1 is a sectional side view of a main part showing an embodiment of the present invention, and FIG. 2 is a plan view of a stator section of a frequency generator in the same embodiment. In these drawings, a rotating shaft 2 is rotatably supported by a bearing 1, and a disc-shaped magnetic iron plate 3 for magnetic return is fixed to the rotating shaft 2 via a spacer 4.
上記磁気帰路用磁性体鉄板３の下面にはＰ極対
（ただし、Ｐは４以上の整数で、ここでは８極対
＝16極）に永久着磁されたワツシヤー状またはド
ーナツ状などといつた回転子を構成するところの
円環状の界磁磁石５が回転軸２と同心的に固着さ
れ、その下方に配された固定子を構成するところ
の電機子鉄心６、電機子巻線７と共に平面対向型
の無刷子電動機を構成している。 The lower surface of the magnetic iron plate 3 for magnetic return is permanently magnetized into P pole pairs (P is an integer of 4 or more, in this case, 8 pole pairs = 16 poles) in the shape of a washer or a donut. An annular field magnet 5 constituting the rotor is fixed concentrically to the rotating shaft 2, and is arranged in a flat plane together with an armature core 6 and an armature winding 7 disposed below that constituting the stator. It constitutes an opposed brushless motor.
また、周波数発電機の回転子部として、上記界
磁磁石５の外周端部全域にわたつて所定のピツチ
で多極着磁された周波数発電機用回転子８が構成
されている。 Further, as a rotor portion of the frequency generator, a rotor 8 for the frequency generator is configured, which is multi-pole magnetized at a predetermined pitch over the entire outer peripheral end portion of the field magnet 5.
さらに、上記周波数発電機用回転子８と所要の
空隙を介して近接対向するように、前記界磁磁石
５と電機子巻線７の間に回転軸２と同心的に配さ
れた円板状の絶縁基板９の片面にはプリント配線
技術で形成した周波数発電機の固定子部（検出
部）を構成する周波数発電機用回転子の着磁に対
応したピツチの矩形波状の発電コイル１０が回転
軸心を中心として円環状に配備されている。さら
に、上記絶縁基板９上で上記発電コイル１０によ
つて囲まれる部分には、界磁磁石５の回転位置に
応じて各相の電機子巻線７への通電を順次制御す
るための信号を出力する回転位置検出部を構成す
るところのホール素子１１ａ，１１ｂが配備され
ている。 Furthermore, a disc-shaped disc is arranged concentrically with the rotating shaft 2 between the field magnet 5 and the armature winding 7 so as to closely face the frequency generator rotor 8 with a required gap therebetween. On one side of the insulating substrate 9, there is a rotating rectangular wave-shaped generating coil 10 formed by printed wiring technology and having a pitch corresponding to the magnetization of the rotor for the frequency generator, which constitutes the stator section (detection section) of the frequency generator. They are arranged in a circular ring around the axis. Furthermore, a signal for sequentially controlling energization to the armature winding 7 of each phase in accordance with the rotational position of the field magnet 5 is provided on the portion of the insulating substrate 9 surrounded by the generating coil 10. Hall elements 11a and 11b, which constitute a rotational position detecting section for outputting, are provided.
このようにホール素子１１ａ，１１ｂを発電コ
イル１０の内周部に配置しなければならない場合
（一般的に、周波数発電機部は電動機の外周部に
設けた方がパルス数が多くとれるので有利であ
る）には、ホール素子１１ａ，１１ｂの端子引出
線１２を形成するために、第２図に例示するよう
に発電コイル１０の一部を削除した構成にしなけ
ればならない。このような構成にした場合、次に
述べるような問題が発生する。 In this case, when the Hall elements 11a and 11b have to be placed on the inner circumference of the generator coil 10 (generally, it is advantageous to place the frequency generator section on the outer circumference of the motor because a larger number of pulses can be obtained). In some cases, in order to form the terminal lead wires 12 of the Hall elements 11a and 11b, a part of the power generating coil 10 must be removed as illustrated in FIG. If such a configuration is adopted, the following problems occur.
すなわち、第１図、第２図に示す実施例では小
形化および部品点数を減らすために界磁磁石５と
周波数発電機用回転子８を兼用しているが、それ
らを別々の部品で構成する場合でも、一般に小形
に構成したい場合が多いので、駆動用磁石と周波
数発電機とは近接して設けなければならない場合
が多い。このような場合には、駆動磁石の漏洩磁
束が周波数発電機に悪影響を与えるおそれがあ
る。特に、本発明の実施例のように発電コイル１
０の一部を削除する場合には、その影響が顕著と
なる。そこで、本発明の実施例においてはＰ（＝
８）極対の界磁磁石５の漏洩磁束による誘導ノイ
ズ電圧を打ち消すために、第２図に示すごとく、
発電コイル１０の引出線である始端線素１０ａと
終端線素１０ｂのなす角度を３６０゜／ｐまたは、ほぼ
３６０゜／ｐとするように構成している。 That is, in the embodiments shown in FIGS. 1 and 2, the field magnet 5 and the rotor 8 for the frequency generator are used together in order to downsize and reduce the number of parts, but these are constructed from separate parts. Even in this case, it is generally desired to have a compact configuration, so the driving magnet and the frequency generator must be provided close to each other in many cases. In such a case, the leakage magnetic flux of the drive magnet may have an adverse effect on the frequency generator. In particular, as in the embodiment of the present invention, the power generating coil 1
When deleting part of 0, the effect becomes noticeable. Therefore, in the embodiment of the present invention, P(=
8) In order to cancel the induced noise voltage due to the leakage magnetic flux of the field magnet 5 of the pole pair, as shown in Fig. 2,
The angle formed by the starting line element 10a and the ending line element 10b, which are the lead wires of the generating coil 10, is 360°/p or approximately 360°/p.
このように構成すると、発電コイル１０の発電
線素ごとに発生する漏洩磁束による誘導ノイズは
３６０゜／８または、ほぼ３６０゜／８ごとの発電線素
で互いに
打ち消し合い、始端線素１０ａから３６０゜／８の整数
倍の角度に位置する終端線素１０ｂで完全に打ち
消し合う。また、発電線素以外の始端線素１０ａ
の引出し部と終端線素１０ｂの引出し部での漏洩
磁束による誘導ノイズも互いに打ち消し合うの
で、駆動磁石からの誘導磁束の影響はほとんど問
題とならない。 With this configuration, the induced noise due to leakage magnetic flux generated in each generating line element of the generating coil 10 is canceled out by each generating line element every 360°/8 or approximately every 360°/8, and the noise is reduced by 360° from the starting line element 10a. They completely cancel each other out at the terminal line element 10b located at an angle that is an integral multiple of °/8. In addition, the starting line element 10a other than the power generating line element
Since the induced noise due to the leakage magnetic flux at the lead-out portion of the terminal wire element 10b and the lead-out portion of the terminal wire element 10b also cancel each other out, the influence of the induced magnetic flux from the drive magnet poses almost no problem.
なお、本発明の実施例では電機子巻線による誘
導磁束及びトランスなどの外部磁界の誘導磁束の
打ち消し対策として、終端線素１０ｂ（または始
端線素１０ａ）側から直列的に略円環状を成した
誘導ノイズ除去用導電体１３を同絶縁基板９上の
発電コイル１０の外周にプリント配線技術で形成
している。 In addition, in the embodiment of the present invention, as a countermeasure for canceling the magnetic flux induced by the armature winding and the magnetic flux induced by an external magnetic field such as a transformer, a substantially circular ring is formed in series from the terminal wire element 10b (or the starting wire element 10a) side. The induced noise removing conductor 13 is formed on the outer periphery of the power generating coil 10 on the same insulating substrate 9 by printed wiring technology.
なお、以上の実施例においてはＰ＝８すなわち
16極着磁の界磁磁石を使用した場合を説明した
が、本発明は、それに限定されるものではなく、
Ｐが４以上の整数の磁極構成でも同様に実施可能
である。また、Ｐが大きい場合、すなわち多極着
磁の場合、始端線素１０ａと終端線素１０ｂのな
す角度を３６０゜／ｐ×ｎ（ただし、ｎは１以上の整
数）にしても同様な効果が得られることはいうま
でもない。 In addition, in the above embodiment, P=8, that is,
Although the case where a 16-pole magnetized field magnet is used has been described, the present invention is not limited thereto.
A magnetic pole configuration in which P is an integer of 4 or more can be similarly implemented. In addition, when P is large, that is, in the case of multi-pole magnetization, the same effect can be obtained even if the angle formed by the starting line element 10a and the ending line element 10b is set to 360°/p×n (where n is an integer of 1 or more). Needless to say, you can obtain
以上のことから明らかなように本発明は周波数
発電機の検出誤差要因となる誘導磁束の影響のな
い、すなわちSN比のよい周波数発電機付電動機
を実現できるため、特にレコードプレーヤやテー
プレコーダの如き音響機器の駆動源として使用す
れば高性能の機器となし得る。 As is clear from the above, the present invention can realize a motor with a frequency generator that is free from the influence of induced magnetic flux that causes detection errors of frequency generators, that is, has a good signal-to-noise ratio. If used as a drive source for audio equipment, it can be made into a high-performance equipment.
第１図は本発明の一実施例の要部側断面図、第
２図は同実施例における周波数発電機の固定子部
の平面図である。
２……回転軸、５……界磁磁石、７……電機子
巻線、８……周波数発電機用回転子、９……絶縁
基板、１０……発電コイル、１０ａ……始端線素
（引出線）、１０ｂ……終端線素（引出線）、１１
ａ，１１ｂ……ホール素子、１２……端子引出
線、１３……誘導ノイズ除去用導電体。
FIG. 1 is a sectional side view of a main part of an embodiment of the present invention, and FIG. 2 is a plan view of a stator section of a frequency generator in the same embodiment. 2...Rotating shaft, 5...Field magnet, 7...Armature winding, 8...Rotor for frequency generator, 9...Insulating substrate, 10...Generating coil, 10a...Starting wire element ( Leader line), 10b...Terminal line element (Leader line), 11
a, 11b...Hall element, 12...Terminal lead wire, 13...Inductive noise removal conductor.
Claims (1)
された円環状の界磁磁石とその外周部に配設され
所定ピツチで多極着磁された周波数発電機用磁石
とを有する回転子と、前記界磁磁石と対向してト
ルクを発生する電機子巻線と、前記界磁磁石の一
部と対向し、その回転位置を検出し、電機子巻線
への電流を切換える信号を発生する位置検出素子
と、前記周波数発電機用磁石と対向し、回転子の
回転数に応じた周波数の電気信号を発生する発電
コイルとを具備し、前記発電コイルは絶縁基板面
にプリント配線技術で所定のピツチの矩形波状で
円環状に配設され、その環状の一部を削除した形
状に配設するとともに、その両端の引出線である
始端線素と終端線素のなす角をｎ×３６０゜／ｐまた は、ほぼｎ×３６０゜／ｐ（ただし、ｎは１以上の整 数）となるよう形成され、かつ前記絶縁基板面上
に前記位置検出素子が配設され、その引出線は前
記発電コイルの環状の一部を削除した部分を通し
て外側へ導出されていることを特徴とする周波数
発電機付電動機。[Claims] 1. An annular field magnet magnetized into p-pole pairs (where p is an integer of 4 or more) and a frequency power generator arranged around its outer periphery and magnetized with multiple poles at a predetermined pitch. a rotor having a machine magnet; an armature winding that faces the field magnet and generates torque; and an armature winding that faces a part of the field magnet and detects its rotational position; a position detection element that generates a signal to switch the current to the frequency generator; and a power generation coil that faces the frequency generator magnet and generates an electric signal with a frequency corresponding to the rotation speed of the rotor, the power generation coil A rectangular wave shape with a predetermined pitch is arranged in a ring shape on the surface of an insulating substrate using printed wiring technology, and a part of the ring shape is removed, and a starting line element and a terminal line are drawn out at both ends. The position detection element is formed so that the angle formed by the element is n x 360°/p or approximately n x 360°/p (where n is an integer of 1 or more), and the position detection element is disposed on the surface of the insulating substrate. An electric motor with a frequency generator, characterized in that the lead wire is led out through a portion of the generating coil in which a part of the annular shape is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8219678A JPS5510825A (en) | 1978-07-05 | 1978-07-05 | Motor with frequency generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8219678A JPS5510825A (en) | 1978-07-05 | 1978-07-05 | Motor with frequency generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5510825A JPS5510825A (en) | 1980-01-25 |
| JPS6217470B2 true JPS6217470B2 (en) | 1987-04-17 |
Family
ID=13767663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8219678A Granted JPS5510825A (en) | 1978-07-05 | 1978-07-05 | Motor with frequency generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5510825A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851687U (en) * | 1981-10-02 | 1983-04-07 | ミツミ電機株式会社 | DC motor |
| JPS59126578U (en) * | 1983-02-10 | 1984-08-25 | 株式会社三協精機製作所 | Motor with built-in frequency generator |
| JPS59141481U (en) * | 1983-03-11 | 1984-09-21 | 株式会社東芝 | Motor with built-in frequency generator |
| JPS6059789U (en) * | 1983-09-29 | 1985-04-25 | 愛知電機株式会社 | Electric motor with frequency generator |
| JPS61106053A (en) * | 1984-10-30 | 1986-05-24 | Sanyo Electric Co Ltd | Brushless motor |
| JPS61106057A (en) * | 1984-10-30 | 1986-05-24 | Sanyo Electric Co Ltd | Brushless motor |
| JPS63117279U (en) * | 1987-01-20 | 1988-07-28 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5291110A (en) * | 1976-01-26 | 1977-08-01 | Hitachi Ltd | Frequency generator |
| JPS5291109A (en) * | 1976-01-26 | 1977-08-01 | Hitachi Ltd | Motor with frequency generator |
-
1978
- 1978-07-05 JP JP8219678A patent/JPS5510825A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5291110A (en) * | 1976-01-26 | 1977-08-01 | Hitachi Ltd | Frequency generator |
| JPS5291109A (en) * | 1976-01-26 | 1977-08-01 | Hitachi Ltd | Motor with frequency generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5510825A (en) | 1980-01-25 |
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