JP3534206B2 - Sheet coil type resolver - Google Patents
Sheet coil type resolverInfo
- Publication number
- JP3534206B2 JP3534206B2 JP12077195A JP12077195A JP3534206B2 JP 3534206 B2 JP3534206 B2 JP 3534206B2 JP 12077195 A JP12077195 A JP 12077195A JP 12077195 A JP12077195 A JP 12077195A JP 3534206 B2 JP3534206 B2 JP 3534206B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- spiral
- phase
- detection
- wave
- 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 - Lifetime
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- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、工作機械や産業用ロボ
ットなどのモータの回転検出器、またはリニアモータの
変位検出器として用いられ、励磁巻線と検出巻線がシー
トコイルで構成されたレゾルバに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a rotation detector of a motor of a machine tool or an industrial robot or a displacement detector of a linear motor, and an exciting winding and a detecting winding are composed of sheet coils. Regarding resolver.
【従来の技術】従来、シートコイルとして、薄膜の絶縁
シートを挟んで、その両面に平面渦巻き状の導体（以
下、渦巻きコイルという）を対応させ、それらの内側ど
うしをスルーホールを通して接続した構成をしているも
のが開示されている（例えば、特公昭６１−５６７００
号）。具体的例として、１相励磁２相検出方式軸倍角３
Ｘのレゾルバを図１０、図１１に基づいて説明する。図
１０は励磁相の平面状シートコイルを示す平面図であ
る。１は励磁相コイルで、薄膜の絶縁シート層１１の表
側に渦巻きコイル１２ａを設け、裏側には同一方向から
見ると逆方向の渦巻きコイル（以下、逆渦巻きコイルと
いう）１２ｂを設けて渦巻きコイル１２ａと対向させて
おり、表側に６個の渦巻きコイル１２ａ、裏側に６個の
逆渦巻きコイル１２ｂを形成してある。渦巻きコイル１
２ａと逆渦巻きコイル１２ｂの内側どうしをスルーホー
ル１３を通して接続し、この両側の２コイルを合わせて
１極としている。３Ｘのレゾルバでは、極ピッチは機械
角で６０度であり、励磁相の渦巻きコイル１２ａ、逆渦
巻きコイル１２ｂの１個が占める角度は機械角で６０度
となっている。図１１は検出相の平面状シートコイルを
示す平面図である。２は検出相コイルで、絶縁シート層
２１の表側に渦巻きコイル２２ａを設け、裏側には渦巻
きコイル２２ａと電気的に９０度の位相差を持つ逆渦巻
きコイル２２ｂを設けてある。二つの隣り合う渦巻きコ
イル２２ａは連続して接続してあり、渦巻きコイル２２
ａの内側はスルーホール２３を通り、裏側の渡線２４ｂ
の一方端に接続され、渡線２４ｂの他方端からスルーホ
ール２３を通り、再び表側の別の渦巻きコイル２２ａの
内側に接続され、Ａ相検出コイル２Ａを形成してある。
同様に、二つの隣り合う逆渦巻きコイル２２ｂは連続し
て接続してあり、逆渦巻きコイル２２ｂの内側はスルー
ホール２３を通り、表側の渡線２４ａの一方端に接続さ
れ、渡線２４ａの他方端からスルーホール２３を通り、
再び裏側の別の逆渦巻きコイル２２ｂの内側に接続さ
れ、Ｂ相検出コイル２Ｂを形成してある。検出相のそれ
ぞれ１個の渦巻きコイル２２ａ、逆渦巻きコイル２２ｂ
が占める角度は機械角で６０度となっており、表側には
６個のＡ相検出コイル２Ａ、裏側には６個のＢ相検出コ
イル２Ｂを形成してある。また、渦巻きコイル、逆渦巻
きコイルの形状は励磁相コイル、検出相コイル共に、円
弧と直線を順に接続した渦巻き状になっている。また、
円弧の中心角は６０度より小さい角で、渦巻きの外側か
ら内側になるほど小さくなっている。2. Description of the Related Art Conventionally, a sheet coil has a structure in which a thin film insulating sheet is sandwiched and flat spiral conductors (hereinafter referred to as spiral coils) are made to correspond to both surfaces of the sheet coil and the insides thereof are connected through through holes. Are disclosed (for example, Japanese Patent Publication No. 61-56700).
issue). As a specific example, a one-phase excitation two-phase detection system shaft angle doubler 3
The resolver of X will be described with reference to FIGS. FIG. 10 is a plan view showing a flat sheet coil in the excitation phase. Reference numeral 1 denotes an excitation phase coil, which is provided with a spiral coil 12a on the front side of the thin insulating sheet layer 11 and a spiral coil 12b in the opposite direction when viewed from the same direction on the back side (hereinafter referred to as the reverse spiral coil) 12a. 6 spiral coils 12a are formed on the front side and 6 inverse spiral coils 12b are formed on the back side. Spiral coil 1
2a and the insides of the reverse spiral coil 12b are connected to each other through the through hole 13, and the two coils on both sides are combined to form one pole. In the 3X resolver, the pole pitch is 60 degrees in mechanical angle, and the angle occupied by one of the spiral coil 12a and the reverse spiral coil 12b in the excitation phase is 60 degrees in mechanical angle. FIG. 11 is a plan view showing a flat sheet coil in the detection phase. Reference numeral 2 denotes a detection phase coil, which is provided with a spiral coil 22a on the front side of the insulating sheet layer 21 and a reverse spiral coil 22b having a phase difference of 90 degrees electrically with the spiral coil 22a on the back side. Two adjacent spiral coils 22a are continuously connected to each other.
The inside of a passes through the through hole 23 and the crossover line 24b on the back side
It is connected to one end, passes through the through hole 23 from the other end of the crossover wire 24b, and is again connected to the inside of another spiral coil 22a on the front side to form an A-phase detection coil 2A.
Similarly, two adjacent reverse spiral coils 22b are continuously connected, the inside of the reverse spiral coil 22b passes through the through hole 23, is connected to one end of the front side crossover wire 24a, and is connected to the other end of the crossover wire 24a. From the end through the through hole 23,
It is again connected to the inside of another reverse spiral coil 22b on the back side to form a B-phase detection coil 2B. One spiral coil 22a and one reverse spiral coil 22b for each detection phase
The mechanical angle is 60 degrees, and six A-phase detection coils 2A are formed on the front side and six B-phase detection coils 2B are formed on the back side. The shape of the spiral coil and the reverse spiral coil is a spiral shape in which an arc and a straight line are sequentially connected to both the excitation phase coil and the detection phase coil. Also,
The central angle of the arc is smaller than 60 degrees, and becomes smaller from the outside to the inside of the spiral.
【０００３】[0003]
【発明が解決しようとする課題】ところが、従来技術で
は、次のような問題がある。励磁相コイル１が回転し、
検出相コイル２は固定されているとする。ここで、励磁
相コイル１は渦巻きコイル１２ａの１ターンとその隣に
ある逆渦巻きコイル１２ｂの１ターンで構成された１極
対と、検出相コイル２の渦巻きコイル２２ａの１ターン
について、回転角に対する磁束の鎖交部分の変化を示す
図１２に基づいて説明する。検出相コイル２の渦巻きコ
イル２２ａの１ターンは、励磁相コイル１の渦巻きコイ
ル１２ａの１ターンによる磁束と逆渦巻きコイル１２ｂ
の１ターンによる磁束と鎖交するが、励磁コイル１の渦
巻きコイル１２ａの１ターンによる磁束と鎖交した場合
は、正の鎖交磁束であり、逆渦巻きコイル１２ｂについ
ては負の鎖交磁束となる。よって、回転角に対する鎖交
磁束の振幅の大きさは、図１３に示すように、三角波状
に変化する。したがって、励磁相を数ターンと検出相を
数ターンで構成した場合も、回転角に対する鎖交磁束の
振幅の大きさは、正弦波状に変化せず、検出相の誘起電
圧の変化も高調波成分を含むこととなり、検出出力の角
度誤差が発生するという問題があった。。本発明は、検
出相の出力波形を正弦波に近いものにして、角度誤差の
小さいシートコイル型レゾルバを提供することを目的と
するものである。However, the conventional technique has the following problems. The excitation phase coil 1 rotates,
It is assumed that the detection phase coil 2 is fixed. Here, the exciting phase coil 1 has a rotation angle with respect to one pole pair composed of one turn of the spiral coil 12a and one turn of the reverse spiral coil 12b adjacent thereto, and one turn of the spiral coil 22a of the detection phase coil 2. It will be described with reference to FIG. One turn of the spiral coil 22a of the detection phase coil 2 is equivalent to the magnetic flux generated by one turn of the spiral coil 12a of the excitation phase coil 1 and the reverse spiral coil 12b.
, Which is linked with the magnetic flux of one turn of the exciting coil 1, but is linked with the magnetic flux of one turn of the spiral coil 12a of the exciting coil 1, the magnetic flux is a positive magnetic flux, and with the reverse spiral coil 12b, it is a negative magnetic flux. Become. Therefore, the magnitude of the amplitude of the interlinkage magnetic flux with respect to the rotation angle changes in a triangular wave shape, as shown in FIG. Therefore, even when the excitation phase is composed of several turns and the detection phase is composed of several turns, the magnitude of the amplitude of the interlinkage magnetic flux with respect to the rotation angle does not change sinusoidally, and the change in the induced voltage of the detection phase is also a harmonic component. Therefore, there is a problem that an angular error of the detection output occurs. . It is an object of the present invention to provide a sheet coil resolver with a small angle error by making the output waveform of the detection phase close to a sine wave.
【０００４】[0004]
【課題を解決するための手段】上記問題を解決するため
に、本発明は、一方の絶縁シート層の表側に渦巻きコイ
ルを設け、裏側には表側と同一方向から見たときに逆向
きに巻かれた渦巻きコイルを設けた励磁相コイルと、他
方の絶縁シート層の表側に渦巻きコイルを設け、裏側に
前記表側の渦巻きコイルと電気的に９０度の位相差を持
つ渦巻きコイルを設けた検出相コイルとを備え、前記励
磁相コイルと前記検出相コイルとを空隙を介して対向さ
せて相対的に移動し得るようにしたシートコイル型レゾ
ルバにおいて、前記励磁相コイルの渦巻きコイルを円弧
状と直線状の導体のつなぎ合わせ、または直線状の導体
を接続した渦巻き状に形成し、前記検出相コイルの渦巻
きコイルを半波正弦波形状の導体と円弧状または直線状
の導体とを順に接続した渦巻き状に形成したものであ
る。また、一方の絶縁シート層の表側に渦巻きコイルを
設け、裏側には表側と同一方向から見たときに逆向きに
巻かれた渦巻きコイルを設けた励磁相コイルと、他方の
絶縁シート層を第１の絶縁シート層と第２の絶縁シート
層の２枚の絶縁シート層で構成し、前記第１の絶縁シー
ト層の表側と裏側にそれぞれＡ相検出コイルを設け、前
記第２の絶縁シート層の表側と裏側にそれぞれＢ相検出
コイルを設けると共に、前記Ａ相検出コイルと前記Ｂ相
検出コイルとを絶縁層を介して電気的に９０度の位相差
を持つように配置した検出相コイルとを備え、、前記励
磁相コイルと前記検出相コイルとを空隙を介して対向さ
せて相対的に移動し得るようにしたシートコイル型レゾ
ルバにおいて、前記励磁相コイルの渦巻きコイルを円弧
状と直線状の導体のつなぎ合わせ、または直線状の導体
を接続した渦巻き状に形成し、前記検出相コイルの渦巻
きコイルを半波正弦波形状の導体と円弧状または直線状
の導体とを順に接続した渦巻き状に形成したものであ
る。また、前記検出相コイルは、半波正弦波形状の導体
を移動方向に垂直な方向を軸として対称形となるよう
に、かつ前記半波正弦波形状の導体の中央部が外径側に
なるように配置し、前記半波正弦波形状の導体相互間を
内径側で円弧状の導体で接続して渦巻き状に形成したも
のである。また、前記検出相コイルは、半波正弦波形状
の導体を移動方向に垂直な方向を軸として対称形となる
ように、かつ前記半波正弦波形状の導体の中央部が内径
側になるように配置し、前記半波正弦波形状の導体相互
間を外径側で円弧状の導体で接続して渦巻き状に形成し
たものである。また、前記励磁コイルおよび前記検出コ
イルをリング状に配置したものである。また、前記励磁
コイルおよび前記検出コイルを直線状に配置したもので
ある。In order to solve the above-mentioned problems, the present invention provides a spiral coil on the front side of one insulating sheet layer, and reversely winds it on the back side when viewed from the same direction as the front side. A detection phase including an excitation phase coil provided with a spiral coil and a spiral coil provided on the front side of the other insulating sheet layer, and a spiral coil having a phase difference of 90 degrees electrically from the front side spiral coil on the back side. A sheet coil type resolver comprising a coil, wherein the excitation phase coil and the detection phase coil are opposed to each other via a gap and can move relative to each other. -Shaped conductors are joined together or formed into a spiral shape by connecting linear conductors, and the spiral coil of the detection phase coil is connected to a half-wave sinusoidal-shaped conductor and an arc-shaped or linear-shaped conductor in order. It is obtained by forming on the spiral. In addition, a spiral coil is installed on the front side of one insulation sheet layer.
It is installed, and when viewed from the same side as the front side,
Excitation phase coil with wound spiral coil and the other
Insulating sheet layer as first insulating sheet layer and second insulating sheet
The first insulating sheet is composed of two insulating sheet layers.
A-phase detection coils are provided on the front and back sides of the
B phase detection on the front and back sides of the second insulating sheet layer
A coil is provided, and the A phase detection coil and the B phase are provided.
Electrically 90 degree phase difference with the detection coil through an insulating layer
And a detection phase coil arranged so that
The magnetic phase coil and the detection phase coil are opposed to each other through a gap.
Sheet coil type resonators that can be moved relative to each other
In the Luba, the spiral coil of the excitation phase coil
Of straight and straight conductors, or straight conductors
The spiral of the detection phase coil is formed by connecting the
Coil and half-wave sinusoidal conductor and arc or straight
It is formed in a spiral shape in which the conductors of
It Further, the detection phase coil is symmetrical so that the half-wave sine-wave conductor is symmetrical about the direction perpendicular to the moving direction, and the central portion of the half-wave sine-wave conductor is on the outer diameter side. Thus, the half-wave sinusoidal conductors are connected to each other by an arc-shaped conductor on the inner diameter side to form a spiral shape. Further, the detection phase coil is symmetrical so that the half-wave sine-wave conductor is symmetrical about the direction perpendicular to the moving direction, and the center of the half-wave sine-wave conductor is on the inner diameter side. And the half-wave sinusoidal conductors are connected to each other by an arc-shaped conductor on the outer diameter side to form a spiral shape. Further, the exciting coil and the detecting coil are arranged in a ring shape. Further, the exciting coil and the detecting coil are linearly arranged.
【０００５】[0005]
【作用】上記手段により、励磁相コイルは絶縁シート層
の表側と裏側に渦巻きコイルを、円弧状と直線状の導体
を順につなぎ合わせて接続し、または直線状の導体で渦
巻き状に形成し、検出相コイルは表側と裏側に設けた渦
巻きコイルを半波正弦波形状の導体と円弧状または直線
状の導体とを順に接続した渦巻き状に形成して、回転角
または変位に対する鎖交磁束の振幅の大きさが正弦波状
に変化するようにしてあるので、変位誤差を大幅に低減
できる。また、検出相コイルのＡ相、Ｂ相検出コイルを
それぞれ表、裏の２層に形成してあるので、検出電圧を
大きくすることができる。By the action above means, the excitation phase coils a spiral coil on the front side and the back side of the insulating sheet layers, connected by connecting the arcuate and linear conductors in sequence, or formed in a spiral shape a linear conductor, The detection phase coil is formed by spiral coils provided on the front side and the back side in a spiral shape in which a half-wave sinusoidal conductor and an arc or linear conductor are connected in order, and the amplitude of the interlinkage magnetic flux with respect to the rotation angle or displacement is determined. Since the magnitude of is changed sinusoidally, the displacement error can be greatly reduced. Further, since the A-phase and B-phase detection coils of the detection phase coil are formed on the front and back layers, respectively, the detection voltage can be increased.
【０００６】[0006]
【実施例】以下、本発明を図に示す１相励磁２相検出方
式（軸倍角）３Ｘのレゾルバの実施例について説明す
る。図１（ａ）は本発明の第１の実施例の回転形レゾル
バに適用した励磁相コイルの表側を示す平面図、（ｂ）
は表側と同一方向から見た裏側を示す平面図、図２
（ａ）は検出相コイルの表側を示す平面図、（ｂ）は表
側と同一方向から見た裏側を示す平面図である。図１に
おいて、１は励磁相コイルで、図１０で説明した従来例
と同様に、薄膜の絶縁シート層１１の表側に渦巻きコイ
ル１２ａを設け、裏側には同一方向から見ると逆方向の
渦巻きコイル（以下、逆渦巻きコイルという）１２ｂを
設けて渦巻きコイル１２ａと対向させており、表側に６
個の渦巻きコイル１２ａ、裏側に６個の逆渦巻きコイル
１２ｂをリング状に形成してある。渦巻きコイル１２ａ
と逆渦巻きコイル１２ｂの内側どうしをスルーホール１
３を通して接続し、この両側の２コイルを合わせて１極
としている。（軸倍角）３Ｘのレゾルバでは、極ピッチ
は機械角で６０度であり、励磁相の渦巻きコイル１２
ａ、逆渦巻きコイル１２ｂの１個が占める角度は機械角
で６０度となっている。また、励磁相コイルの渦巻きコ
イル、逆渦巻きコイルの形状は、円弧状と直線状の導体
を順につなぎ合わせて接続した渦巻き状になっている。
また、円弧の中心角は６０度より小さい角で、渦巻きの
外側から内側になるほど小さくなっている。したがっ
て、励磁相コイル１は、それぞれ１個の渦巻きコイルお
よび逆渦巻きコイルを円弧の中心を合わせて６個を平面
に配置し、裏表で１２個の渦巻きコイルと逆渦巻きコイ
ルで構成してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a 1-phase excitation 2-phase detection system (axis multiplication angle) 3X resolver according to the present invention will be described below. FIG. 1A is a plan view showing the front side of an excitation phase coil applied to the rotary resolver of the first embodiment of the present invention, FIG.
2 is a plan view showing the back side viewed from the same direction as the front side, FIG.
(A) is a plan view showing the front side of the detection phase coil, and (b) is a plan view showing the back side viewed from the same direction as the front side. In FIG. 1, reference numeral 1 denotes an excitation phase coil, which has a spiral coil 12a on the front side of the thin insulating sheet layer 11 and a spiral coil in the opposite direction on the back side as in the conventional example described in FIG. A spiral coil 12b (hereinafter referred to as a reverse spiral coil) is provided so as to face the spiral coil 12a.
A single spiral coil 12a and six reverse spiral coils 12b on the back side are formed in a ring shape. Spiral coil 12a
And the insides of the reverse spiral coil 12b through the through hole 1
3 are connected, and the two coils on both sides are combined to form one pole. In the (axis multiplying angle) 3X resolver, the pole pitch is 60 degrees in mechanical angle, and the spiral coil 12 of the excitation phase is
a, the angle occupied by one of the inverse spiral coils 12b is a mechanical angle of 60 degrees. The shape of the spiral coil and the reverse spiral coil of the excitation phase coil is a spiral shape in which arcuate and linear conductors are sequentially connected and connected.
Further, the central angle of the arc is smaller than 60 degrees, and becomes smaller from the outside to the inside of the spiral. Therefore, in the excitation phase coil 1, six spiral coils and one reverse spiral coil are arranged on a plane with the centers of the arcs aligned, and are composed of 12 spiral coils and a reverse spiral coil on the front and back.
【０００７】図２において、３は検出相コイルで、絶縁
シート層３１の表側にＡ相検出コイル３Ａを形成する渦
巻きコイル３２ａを設け、裏側には渦巻きコイル３２ａ
と電気的に９０度の位相差を持ち、Ｂ相検出コイル３Ｂ
を形成する渦巻きコイル３２ｂを設けてある。渦巻きコ
イル３２ａ、渦巻きコイル３２ｂの形状は、平面を極座
標とした場合の角度を変数とする正弦波のうちの半波の
形状、すなわち半波正弦波形状の導体３２１を、回転方
向に垂直な方向を軸として対称形となるように、かつ導
体３２１の中央部が外径側になるように配置し、半波正
弦波形状の導体３２１相互間を内径側で円弧状の導体３
２２で接続して渦巻き状に形成してある。二つの隣り合
う渦巻きコイル３２ａは、図２（ａ）に示すように、連
続して接続してあり、渦巻きコイル３２ａの内側はスル
ーホール３３を通り、裏側の渡線３４ｂの一方端に接続
され、渡線３４ｂの他方端からスルーホール３３を通
り、再び表側の別の渦巻きコイル３２ａの内側に接続さ
れ、Ａ相検出コイル３Ａを形成してある。同様に、二つ
の隣り合う渦巻きコイル３２ｂは、図２（ｂ）に示すよ
うに、連続して接続してあり、渦巻きコイル３２ｂの内
側はスルーホール３３を通り、表側の渡線３４ａの一方
端に接続され、渡線３４ａの他方端からスルーホール３
３を通り、再び裏側の別の渦巻きコイル３２ｂの内側に
接続され、Ｂ相検出コイル３Ｂを形成してある。 検出
相のそれぞれ１個の渦巻きコイル３２ａ、渦巻きコイル
３２ｂが占める角度は機械角で６０度となっており、表
側には６個のＡ相検出コイル３Ａ、裏側には６個のＢ相
検出コイル３Ｂをリング状に形成してある。In FIG. 2, reference numeral 3 denotes a detection phase coil, which is provided with a spiral coil 32a forming the A-phase detection coil 3A on the front side of the insulating sheet layer 31, and a spiral coil 32a on the back side.
Has a phase difference of 90 degrees electrically with the B phase detection coil 3B.
There is provided a spiral coil 32b which forms The shape of the spiral coil 32a and the spiral coil 32b is a half-wave shape of a sine wave having an angle when the plane is polar coordinates, that is, a half-wave sine-wave conductor 321 in a direction perpendicular to the rotation direction. Are arranged so that the conductor 321 is symmetrical with respect to the axis and the central portion of the conductor 321 is on the outer diameter side.
It is connected at 22 and is formed in a spiral shape. As shown in FIG. 2A, the two adjacent spiral coils 32a are continuously connected, and the inside of the spiral coil 32a passes through the through hole 33 and is connected to one end of the back wire 34b. The other end of the crossover wire 34b passes through the through hole 33 and is again connected to the inside of another spiral coil 32a on the front side to form an A-phase detection coil 3A. Similarly, two adjacent spiral coils 32b are continuously connected as shown in FIG. 2B, the inside of the spiral coil 32b passes through the through hole 33, and one end of the front-side crossover wire 34a. To the through hole 3 from the other end of the crossover 34a.
3 and is connected to the inside of another spiral coil 32b on the back side again to form a B-phase detection coil 3B. An angle occupied by one spiral coil 32a and one spiral coil 32b in the detection phase is 60 degrees in mechanical angle. Six A-phase detection coils 3A are on the front side and six B-phase detection coils are on the back side. 3B is formed in a ring shape.
【０００８】ここで、励磁相コイル１の渦巻きコイル１
２ａと逆渦巻きコイル１２ｂの１極対と、検出相コイル
３の渦巻きコイル３２ａの１コイルを取り上げて、図３
に基づいて、回転角が０°から９０°まで変化した時の
状態を示す動作を説明する。検出相コイル３の渦巻きコ
イル３２ａの１ターンは、励磁相コイル１の渦巻きコイ
ル１２ａの１ターンによる磁束と、逆渦巻きコイル１２
ｂの１ターンによる磁束と鎖交するが、励磁相コイル３
の渦巻きコイル３２ａの１ターンによる磁束と鎖交した
場合は正の鎖交磁束であり、渦巻きコイル３２ｂについ
ては負の鎖交磁束となる。ここで、検出相コイル３の渦
巻きコイル３２ａの形状が半波正弦波形状となっってい
るので、回転角に対する磁束の鎖交部分（斜線で示した
部分）の変化は、図３に示すように、正弦波で囲まれた
面積の中で変化する。したがって、回転角に対する鎖交
磁束の振幅の大きさは、図４に示すように、正弦波状に
変化する。励磁相コイルが数ターンと検出コイルが数タ
ーンで構成した場合も、回転角に対する検出相の誘起電
圧の変化は高調波成分が小さいものとなり、角度誤差を
大幅に低減できる。Here, the spiral coil 1 of the excitation phase coil 1
2A and one spiral pair of the reverse spiral coil 12b and one spiral coil of the spiral coil 32a of the detection phase coil 3 are picked up and shown in FIG.
Based on, the operation showing the state when the rotation angle changes from 0 ° to 90 ° will be described. One turn of the spiral coil 32a of the detection phase coil 3 is equivalent to the magnetic flux generated by one turn of the spiral coil 12a of the excitation phase coil 1 and the reverse spiral coil 12a.
Excitation phase coil 3 interlinks with the magnetic flux generated by one turn b.
In the case of interlinking with the magnetic flux of one turn of the spiral coil 32a, the interlinkage flux is a positive interlinkage flux, and the spiral coil 32b is a negative interlinkage flux. Here, since the shape of the spiral coil 32a of the detection phase coil 3 is a half-wave sine wave shape, the change in the magnetic flux linkage portion (hatched portion) with respect to the rotation angle is as shown in FIG. , Changes in the area surrounded by the sine wave. Therefore, the magnitude of the amplitude of the interlinkage magnetic flux with respect to the rotation angle changes sinusoidally, as shown in FIG. Even when the excitation phase coil is composed of several turns and the detection coil is composed of several turns, the change in the induced voltage of the detection phase with respect to the rotation angle has a small harmonic component, and the angle error can be greatly reduced.
【０００９】図５は第２の実施例を示す検出相コイルの
平面図である。上記第１の実施例では検出相コイル３の
渦巻きコイル３２ａ、渦巻きコイル３２ｂの形状は、半
波正弦波形状の導体を、導体中央部が外径側になるよう
に配置し、円弧状の導体を内径側に配置していたが、こ
の場合は半波正弦波形状の導体を、導体中央部が内径側
になるように配置し、半波正弦波形状の導体相互間を外
径側で円弧状の導体で接続して渦巻き状に形成したもの
である。これにより、第１の実施例の場合より鎖交磁束
を増やすことができる。図６、図７は第３の実施例を示
す平面図で、励磁相コイルと検出相コイルとが相対的に
直線方向に移動するリニア型レゾルバに適用した場合を
示すものである。励磁相コイル４は、図６（ａ）に示す
ように、絶縁シート層４１の表側に長方形状の導体を順
に接続して形成した渦巻きコイル４２ａを設け、（ｂ）
に示すように、裏側には同様に形成した逆渦巻きコイル
４２ｂを渦巻きコイル４２ａと１ピッチずらして設け、
スルーホール４３を介して渦巻きコイル４２ａと逆渦巻
きコイル４２ｂとを接続してある。検出相コイル５は、
図７（ａ），（ｂ）に示すように、絶縁シート層５１の
表裏の両面に半波正弦波形状の導体と直線状の導体とを
順に接続して渦巻きコイル５２ａと渦巻きコイル５２ｂ
とを電気角で９０度位相差を持つように移動方向に配置
し、スルーホール５３により渡り線５４ａ，５４ｂを介
してＡ相検出コイル５Ａ，Ｂ相検出コイル５Ｂを形成し
てある。これにより、リニア型レゾルバの場合でも、直
線的変位に対する鎖交磁束の振幅の大きさは正弦波状に
変化し、変位誤差を大幅に低減できる。FIG. 5 is a plan view of a detection phase coil showing a second embodiment. In the first embodiment described above, the spiral coil 32a and the spiral coil 32b of the detection phase coil 3 have a half-wave sinusoidal shape and are arranged so that the conductor central portion is on the outer diameter side. Was placed on the inner diameter side.In this case, the half-wave sinusoidal conductors are placed so that the center of the conductor is on the inner diameter side, and the half-wave sinusoidal conductors are circled on the outer diameter side. It is formed in a spiral shape by connecting with an arc-shaped conductor. Thereby, the interlinkage magnetic flux can be increased as compared with the case of the first embodiment. FIG. 6 and FIG. 7 are plan views showing the third embodiment, and show the case of application to a linear resolver in which an excitation phase coil and a detection phase coil move relatively in a linear direction. As shown in FIG. 6A, the excitation phase coil 4 is provided with a spiral coil 42a formed by sequentially connecting rectangular conductors on the front side of the insulating sheet layer 41, and (b).
As shown in FIG. 5, a reverse spiral coil 42b, which is similarly formed, is provided on the back side so as to be offset from the spiral coil 42a by one pitch.
The spiral coil 42a and the reverse spiral coil 42b are connected via the through hole 43. The detection phase coil 5 is
As shown in FIGS. 7A and 7B, a spiral coil 52a and a spiral coil 52b are formed by sequentially connecting a half-wave sinusoidal conductor and a linear conductor on both front and back surfaces of the insulating sheet layer 51.
Are arranged in the moving direction so as to have a phase difference of 90 degrees in terms of electrical angle, and the A-phase detection coil 5A and the B-phase detection coil 5B are formed by the through hole 53 via the crossovers 54a and 54b. As a result, even in the case of the linear resolver, the magnitude of the amplitude of the interlinking magnetic flux with respect to the linear displacement changes in a sine wave shape, and the displacement error can be greatly reduced.
【００１０】図８、図９は第４の実施例の検出コイルを
示す平面図である。第１の実施例では、Ａ相検出コイ
ル、Ｂ相検出コイルをそれぞれ絶縁シート層の片側に渦
巻きコイルによって形成したが、この場合は、２枚の絶
縁シート層の表側および裏側にそれぞれＡ相検出コイ
ル、Ｂ相検出コイルを形成したものである。すなわち、
図８（ａ）に示すように、第１の絶縁シート層６１の表
側に半波正弦波形状の導体６２１相互間を内径側で円弧
状の導体６２２で接続して渦巻きコイル６２ａを形成
し、裏側には図８（ｂ）に示すように、第１の実施例の
励磁相コイル１と同様に、表側と同一方向から見ると逆
方向の逆渦巻きコイル６２ｂを設けて渦巻きコイル６２
ａと対向させ、スルーホール６３により渦巻きコイル６
２ａと逆渦巻きコイル６２ｂとを接続してＡ相検出コイ
ル６Ａを形成してある。Ｂ相検出コイル６Ｂについても
同様に、図９（ａ）に示すように、第２の絶縁シート層
６４の表側に半波正弦波形状の導体６５１相互間を内径
側で円弧状の導体６５２で接続して渦巻きコイル６５ａ
を形成し、裏側には図９（ｂ）に示すように、第１の実
施例の励磁相コイル１と同様に、表側と同一方向から見
ると逆方向の逆渦巻きコイル６５ｂを設けて渦巻きコイ
ル６５ａと対向させ、スルーホール６６により渦巻きコ
イル６５ａと逆渦巻きコイル６２ｂとを接続してある。
Ａ相検出コイル６ＡとＢ相検出コイル６Ｂは電気的に９
０度の位相差を持つように、絶縁シートあるいは絶縁皮
膜からなる絶縁層を介して接着により固定し、検出相コ
イル６を形成する。このように、Ａ相、Ｂ相検出コイル
ともにそれぞれ表裏の２相のコイル構成にすることによ
り、検出相コイル６の巻数が第１の実施例の場合より大
きくなり、検出電圧を高くすることができるので、検出
精度も高くすることができる。なお、第２の実施例で説
明した、半波正弦波形状の導体を導体中央部が内径側に
なるように配置し、半波正弦波形状の導体相互間を外径
側で円弧状の導体で接続して渦巻き状に形成した検出相
コイルについても、また第３の実施例で説明したリニア
型レゾルバに適用した場合も、同様に、Ａ相、Ｂ相検出
コイルをそれぞれ表裏の２相のコイル構成にすることが
できる。FIGS. 8 and 9 are plan views showing a detection coil of the fourth embodiment. In the first embodiment, the A-phase detection coil and the B-phase detection coil are formed by spiral coils on one side of the insulating sheet layers, but in this case, the A-phase detection coils are formed on the front and back sides of the two insulating sheet layers, respectively. A coil and a B-phase detection coil are formed. That is,
As shown in FIG. 8A, the spiral coil 62a is formed by connecting the half-wave sine-wave conductors 621 to each other on the front side of the first insulating sheet layer 61 with the arc-shaped conductor 622 on the inner diameter side, As shown in FIG. 8B, a reverse spiral coil 62b is provided on the back side in the opposite direction when viewed from the same direction as the front side, as in the excitation phase coil 1 of the first embodiment.
and the spiral coil 6 by the through hole 63.
2a and the reverse spiral coil 62b are connected to form an A-phase detection coil 6A. Similarly, for the B-phase detection coil 6B, as shown in FIG. 9A, half-sine sinusoidal conductors 651 are provided on the front side of the second insulating sheet layer 64 with arcuate conductors 652 on the inner diameter side. Connect and spiral coil 65a
As shown in FIG. 9B, a reverse spiral coil 65b is provided on the back side in the opposite direction when viewed from the same direction as the front side, as in the excitation phase coil 1 of the first embodiment. The spiral coil 65a and the inverse spiral coil 62b are connected to each other by a through hole 66 so as to be opposed to the coil 65a.
The A-phase detection coil 6A and the B-phase detection coil 6B are electrically connected to each other.
The detection phase coil 6 is formed by adhering with an insulating sheet or an insulating layer made of an insulating film so as to have a phase difference of 0 degree. In this way, by making the A-phase and B-phase detection coils each have a two-phase coil structure on the front and back sides, the number of turns of the detection phase coil 6 becomes greater than in the first embodiment, and the detection voltage can be increased. Therefore, the detection accuracy can be increased. The half-wave sine-wave conductors described in the second embodiment are arranged so that the conductor center portion is on the inner diameter side, and the half-wave sine-wave conductors are arc-shaped on the outer diameter side. Also in the case of the detection phase coil formed in a spiral shape by being connected with each other and when applied to the linear resolver described in the third embodiment, similarly, the A phase and B phase detection coils of the two phases of the front and back are respectively formed. It can have a coil configuration.
【００１１】[0011]
【発明の効果】以上述べたように、本発明によれば、励
磁相コイルは渦巻きコイル、逆渦巻きコイルを、円弧状
と直線状の導体を順につなぎ合わせて接続した渦巻き状
に形成し、検出相コイルは渦巻きコイル、逆渦巻きコイ
ルを半波正弦波形状の導体と円弧状または直線状の導体
とを順に接続した渦巻き状に形成して、回転角または変
位に対する鎖交磁束の振幅の大きさが正弦波状に変化す
るようにしてあるので、変位誤差を大幅に低減でき、角
度誤差の小さいシートコイル型レゾルバを提供できる効
果がある。As described above, according to the present invention, the exciting phase coil is formed by forming a spiral coil and an inverse spiral coil into a spiral shape by connecting arc-shaped and linear conductors in order and connected, and detecting The phase coil is a spiral coil or an inverse spiral coil formed by connecting a half-wave sinusoidal conductor and a circular or linear conductor in this order to form a spiral coil, and the magnitude of the amplitude of the interlinkage magnetic flux with respect to the rotation angle or displacement. Is changed so as to have a sine wave shape, so that a displacement error can be significantly reduced and a sheet coil type resolver with a small angle error can be provided.
【図１】 本発明の第１の実施例の励磁相コイルを示す
平面図である。FIG. 1 is a plan view showing an excitation phase coil of a first embodiment of the present invention.
【図２】 本発明の第１の実施例の検出相コイルを示す
平面図である。FIG. 2 is a plan view showing a detection phase coil of the first embodiment of the present invention.
【図３】 本発明の第１の実施例の動作を示す説明図で
ある。FIG. 3 is an explanatory diagram showing the operation of the first exemplary embodiment of the present invention.
【図４】 本発明の第１の実施例の鎖交磁束の状態を示
す説明図である。FIG. 4 is an explanatory diagram showing a state of interlinkage magnetic flux of the first embodiment of the present invention.
【図５】 本発明の第２の実施例の検出相コイルを示す
平面図である。FIG. 5 is a plan view showing a detection phase coil of a second embodiment of the present invention.
【図６】 本発明の第３の実施例の励磁相コイルを示す
平面図である。FIG. 6 is a plan view showing an excitation phase coil of a third embodiment of the present invention.
【図７】 本発明の第３の実施例の検出相コイルを示す
平面図である。FIG. 7 is a plan view showing a detection phase coil of a third embodiment of the present invention.
【図８】 本発明の第４の実施例の検出相コイルのＡ相
検出コイルを示す平面図である。FIG. 8 is a plan view showing an A phase detection coil of the detection phase coil of the fourth embodiment of the present invention.
【図９】 本発明の第４の実施例の検出相コイルのＢ相
検出コイルを示す平面図である。FIG. 9 is a plan view showing a B-phase detection coil of the detection phase coil of the fourth embodiment of the present invention.
【図１０】 従来例の励磁相コイルを示す平面図であ
る。FIG. 10 is a plan view showing an excitation phase coil of a conventional example.
【図１１】 従来例の検出相コイルを示す平面図であ
る。FIG. 11 is a plan view showing a conventional detection phase coil.
【図１２】 従来例の動作を示す説明図である。FIG. 12 is an explanatory diagram showing an operation of a conventional example.
【図１３】 従来例の鎖交磁束の状態を示す説明図であ
る。FIG. 13 is an explanatory diagram showing a state of interlinkage magnetic flux of a conventional example.
１ 励磁相コイル、１１、２１、３１、４１ 絶縁シー
ト層、１２ａ、２２ａ，３２ａ，３２ｂ，４２ａ、６２
ａ，６５ａ 渦巻きコイル、１２ｂ，２２ｂ，４２ｂ，
６２ｂ，６５ｂ 逆渦巻きコイル、１３、２３、３３、
４３、５３、６３、６６ スルーホール、２４ａ，２４
ｂ、３４ａ，３４ｂ、５４ａ，５４ｂ渡線、６１ 第１
の絶縁シート層、６４ 第２の絶縁シート層1 Excitation phase coil, 11, 21, 31, 41 Insulation sheet layer, 12a, 22a, 32a, 32b, 42a, 62
a, 65a spiral coil, 12b, 22b, 42b,
62b, 65b inverse spiral coil, 13, 23, 33,
43, 53, 63, 66 through holes, 24a, 24
b, 34a, 34b, 54a, 54b crossover, 61 1st
Insulating sheet layer, 64 second insulating sheet layer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−88121（ＪＰ，Ａ) 特開 平１−126142（ＪＰ，Ａ) 特開 平４−222447（ＪＰ，Ａ) 特開 平８−84449（ＪＰ，Ａ) 特開 昭53−102071（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01D 5/00 - 5/62 G01B 7/00 - 7/34 H02K 24/00 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-1-88121 (JP, A) JP-A 1-126142 (JP, A) JP-A 4-222447 (JP, A) JP-A 8- 84449 (JP, A) JP-A-53-102071 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) G01D 5/00-5/62 G01B 7 /00-7/34 H02K 24/00
Claims (6)
を設け、裏側には表側と同一方向から見たときに逆向き
に巻かれた渦巻きコイルを設けた励磁相コイルと、 他方の絶縁シート層の表側に渦巻きコイルを設け、裏側
に前記表側の渦巻きコイルと電気的に９０度の位相差を
持つ渦巻きコイルを設けた検出相コイルとを備え、 前記励磁相コイルと前記検出相コイルとを空隙を介して
対向させて相対的に移動し得るようにしたシートコイル
型レゾルバにおいて、 前記励磁相コイルの渦巻きコイルを円弧状と直線状の導
体のつなぎ合わせ、または直線状の導体を接続した渦巻
き状に形成し、前記検出相コイルの渦巻きコイルを半波
正弦波形状の導体と円弧状または直線状の導体とを順に
接続した渦巻き状に形成したことを特徴とするシートコ
イル型レゾルバ。1. An excitation phase coil in which a spiral coil is provided on the front side of one insulating sheet layer, and a spiral coil wound in the opposite direction when viewed from the same direction as the front side is provided on the back side, and the other insulating sheet. A spiral coil is provided on the front side of the layer, and a detection phase coil is provided on the back side of the spiral coil on the front side and a spiral coil having a phase difference of 90 degrees electrically is provided, and the exciting phase coil and the detection phase coil are provided. In a sheet coil type resolver that is opposed to each other through a gap and is movable relative to each other, a spiral coil of the excitation phase coil is formed by connecting arc-shaped and linear conductors, or a spiral in which a linear conductor is connected. And a spiral coil of the detection phase coil formed in a spiral shape in which a half-wave sinusoidal conductor and an arc-shaped or linear conductor are sequentially connected. Type resolver.
ルを設け、裏側には表側と同一方向から見たときに逆向
きに巻かれた渦巻きコイルを設けた励磁相コイルと、 他方の絶縁シート層を第１の絶縁シート層と第２の絶縁
シート層の２枚の絶縁シート層で構成し、前記第１の絶
縁シート層の表側と裏側にそれぞれＡ相検出コイルを設
け、前記第２の絶縁シート層の表側と裏側にそれぞれＢ
相検出コイルを設けると共に、前記Ａ相検出コイルと前
記Ｂ相検出コイルとを絶縁層を介して電気的に９０度の
位相差を持つように配置した検出相コイルとを備え、 前記励磁相コイルと前記検出相コイルとを空隙を介して
対向させて相対的に移動し得るようにしたシートコイル
型レゾルバにおいて、 前記励磁相コイルの渦巻きコイルを円弧状と直線状の導
体のつなぎ合わせ、または直線状の導体を接続した渦巻
き状に形成し、前記検出相コイルの渦巻きコイルを半波
正弦波形状の導体と円弧状または直線状の導体とを順に
接続した渦巻き状に形成したことを特徴とするシートコ
イル型レゾルバ。 2. A spiral carp on the front side of one insulating sheet layer.
And the reverse side when viewed from the same direction as the front side on the back side
Excitation phase coil provided with a spirally wound coil, and the other insulating sheet layer to the first insulating sheet layer and the second insulating sheet layer.
The first insulating layer is composed of two insulating sheet layers of a sheet layer.
A-phase detection coils are installed on the front and back sides of the edge sheet layer, respectively.
B on the front side and the back side of the second insulating sheet layer, respectively.
A phase detection coil is provided, and the A phase detection coil and the front
It is electrically connected to the phase B detection coil through an insulating layer at 90 degrees.
A detection phase coil arranged so as to have a phase difference, and the excitation phase coil and the detection phase coil through a gap
A sheet coil that faces each other and can move relatively
Type resolver, the spiral coil of the excitation phase coil is introduced into an arc shape and a linear shape.
A spiral that connects the body or connects straight conductors
It is formed into a rectangular shape and the spiral coil of the detection phase coil is half-wave
Sine wave conductor and arc or straight conductor
A sheet coil characterized by being formed in a spiral shape connected to each other.
Il-type resolver.
導体を移動方向に垂直な方向を軸として対称形となるよ
うに、かつ前記半波正弦波形状の導体の中央部が外径側
になるように配置し、前記半波正弦波形状の導体相互間
を内径側で円弧状の導体で接続して渦巻き状に形成した
請求項１または２記載のシートコイル型レゾルバ。3. The detection phase coil is symmetrical so that a half-wave sine-wave conductor is symmetrical about a direction perpendicular to the moving direction, and a center portion of the half-wave sine-wave conductor has an outer diameter. 3. The sheet coil type resolver according to claim 1, wherein the sheet-coil resolver is arranged so as to be on the side, and the half-wave sinusoidal conductors are connected to each other by an arc-shaped conductor on the inner diameter side to form a spiral shape.
導体を移動方向に垂直な方向を軸として対称形となるよ
うに、かつ前記半波正弦波形状の導体の中央部が内径側
になるように配置し、前記半波正弦波形状の導体相互間
を外径側で円弧状の導体で接続して渦巻き状に形成した
請求項１または２記載のシートコイル型レゾルバ。4. The detection phase coil is symmetrical so that a half-wave sine-wave conductor is symmetrical about a direction perpendicular to a moving direction, and a center portion of the half-wave sine-wave conductor has an inner diameter side. 3. The sheet coil type resolver according to claim 1, wherein the half-wave sinusoidal conductors are connected to each other by an arcuate conductor on the outer diameter side to form a spiral shape.
リング状に配置した請求項１〜４までののいずれか１項
に記載のシートコイル型レゾルバ。5. The sheet coil type resolver according to claim 1, wherein the exciting coil and the detecting coil are arranged in a ring shape.
直線状に配置した請求項１〜４までのいずれか１項に記
載のシートコイル型レゾルバ。6. The sheet coil type resolver according to claim 1, wherein the exciting coil and the detecting coil are linearly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12077195A JP3534206B2 (en) | 1995-04-21 | 1995-04-21 | Sheet coil type resolver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12077195A JP3534206B2 (en) | 1995-04-21 | 1995-04-21 | Sheet coil type resolver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08292066A JPH08292066A (en) | 1996-11-05 |
| JP3534206B2 true JP3534206B2 (en) | 2004-06-07 |
Family
ID=14794602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12077195A Expired - Lifetime JP3534206B2 (en) | 1995-04-21 | 1995-04-21 | Sheet coil type resolver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3534206B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100611630B1 (en) * | 1999-01-14 | 2006-08-10 | 가부시키가이샤 야스카와덴키 | Seat Coil Resolver |
| JP3047231B1 (en) * | 1999-04-02 | 2000-05-29 | 士郎 嶋原 | Resolver |
| JP4602749B2 (en) | 2004-12-10 | 2010-12-22 | ミネベア株式会社 | Flat type resolver |
| JP4862118B2 (en) * | 2006-07-19 | 2012-01-25 | 多摩川精機株式会社 | Angle detector |
| US8450893B2 (en) | 2008-11-06 | 2013-05-28 | Aisan Kogyo Kabushiki Kaisha | Motor structure with planar coil type rotation detector |
| JP4997213B2 (en) * | 2008-11-11 | 2012-08-08 | 愛三工業株式会社 | Resolver |
| US8269487B2 (en) | 2008-11-11 | 2012-09-18 | Aisan Kogyo Kabushiki Kaisha | Sheet coil type resolver |
| JP4997214B2 (en) * | 2008-11-19 | 2012-08-08 | 愛三工業株式会社 | Resolver |
| US8310228B2 (en) | 2008-11-12 | 2012-11-13 | Aisan Kogyo Kabushiki Kaisha | Resolver |
| JP5184420B2 (en) | 2009-03-31 | 2013-04-17 | 愛三工業株式会社 | Resolver |
| JP5755099B2 (en) * | 2011-10-06 | 2015-07-29 | 愛三工業株式会社 | Angle sensor |
| CN103036386B (en) | 2011-10-06 | 2015-07-15 | 爱三工业株式会社 | Angle sensor |
| CN116568994B (en) * | 2020-12-11 | 2024-04-30 | 马渊马达株式会社 | Rotary transformer |
-
1995
- 1995-04-21 JP JP12077195A patent/JP3534206B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08292066A (en) | 1996-11-05 |
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