JPS5873802A - Detector for rotation position - Google Patents
Detector for rotation positionInfo
- Publication number
- JPS5873802A JPS5873802A JP14774781A JP14774781A JPS5873802A JP S5873802 A JPS5873802 A JP S5873802A JP 14774781 A JP14774781 A JP 14774781A JP 14774781 A JP14774781 A JP 14774781A JP S5873802 A JPS5873802 A JP S5873802A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- iron core
- rotation position
- core rotor
- rotor
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
- G01D5/2013—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は回転位堵検出−に関し、たとえは同期モータの
ロータO回転位置検出のための回転位置検出器に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to rotational position detection, for example to a rotational position detector for detecting the rotational position of a rotor of a synchronous motor.
九とえば、同期そ−jのトルク制御は内部相差角を一定
にしてステータの巻線電流の絶対値のみによって行って
お9、このような内部相通角1一定にするためには、同
期モータのロータの回転位置(角)を検出する必要があ
る。For example, the torque control of a synchronous motor is performed by keeping the internal phase difference angle constant and using only the absolute value of the stator winding current9. It is necessary to detect the rotational position (angle) of the rotor.
従来の回転位置検出器は可変リラクタンス形回転トラン
スデ、−サであって、複数の励磁コイルおよびIF数の
検出コイルを有するステータ七、鉄芯ロータと會備えて
いる。、この鳩舎、励磁」イルと検出コイルとσ対9r
なして杉成さ第1ている。ま九、各励磁コイル1ctH
常に一定の高周波電圧が印加され、従って、各動磁コづ
ルと鉄芯ロータとにより形成される磁気回路の磁気抵抗
が鉄芯ロータの回転によって賀什−t′もと、励磁コイ
ルのvlL流も変化し、同時VC1この電流の変化は検
出コイルに誘起される。鉄芯ロータq)形状およびコイ
ルの巻線を適切に行えは、慣用コイルv(#起aれる電
圧力・ら正弦波状の出力が得られ、この正弦波状出力の
差分が鉄芯ロータの回転位置を示すことVCなる。A conventional rotational position detector is a variable reluctance type rotary transducer, which is equipped with a stator having a plurality of excitation coils and an IF number of detection coils, and an iron core rotor. , this pigeonhole, excitation coil and detection coil and σ vs. 9r
The first one is Suginari. 9, each excitation coil 1ctH
A constant high-frequency voltage is always applied, and therefore, the magnetic resistance of the magnetic circuit formed by each dynamic coil and the iron-core rotor increases due to the rotation of the iron-core rotor, and the excitation coil's vlL The current also changes and at the same time VC1 this change in current is induced in the sensing coil. If the shape of the iron core rotor q) and the winding of the coil are properly done, a sinusoidal output can be obtained from the voltage force generated by the conventional coil v(#a), and the difference in this sine wave output is the rotational position of the iron core rotor. It becomes VC to indicate.
しかしながら、上述の従来杉に赫・いてG′よ、励磁コ
イルと共r(検出コイルも必gIkし、との六め、巻線
作業がam化して製造コストが扁くな0. Lかも検出
器自体も大型化するという問題点がある。However, unlike the above-mentioned conventional method, the detection coil must also be used together with the excitation coil, and sixthly, the winding work is changed to AM, which reduces the manufacturing cost. There is also the problem that the container itself becomes larger.
本発明の目的は、励磁01ルの電流の変化を直接検出す
るという):!I想VCもとづ尋、検出コイルを不l!
にし、従って、箒、#作*kv葡略イLして1!l!造
コス)1−低減し、しかも検出器自体も小皺化して帥述
の従来形における問題点を解決することにある。The purpose of the present invention is to directly detect changes in the excitation current):! I think VC Motozuhiro, the detection coil is missing!
Therefore, the broom is 1! l! The purpose is to reduce the manufacturing cost (1) and to reduce the wrinkles in the detector itself, thereby solving the problems of the conventional type mentioned above.
以下、図面rcより本発明を説明する。The present invention will be explained below with reference to drawing rc.
@1図に本発明の第10集施例としての2*槙・造の回
転位置検出器の1#h図である。第1図において、1に
鉄芯ロータであつ1、ステータrcTIシて偏芯してい
る。2−1.2−2q励磁コイル、S−1,3−2ij
’抵抗でおる。各励磁コ1ル2−1.2−2に常に高周
波発振−4の電圧が印加1れている。ここで、鉄芯ロー
タ1とステータとのエアギャップ長L(θ)を適切に決
定すると、各励磁コ1ル2−1.2−2と鉄芯ロータ1
とによって形敗される磁気回路の磁気抵抗が鉄芯ロータ
1の回転と共に変化する。この結果、高周波発振器4の
励a周波数(*=2*/)′によって変−された回転角
1mMする正弦波状の□電圧 Vl、Vz が第2図
LA)お・よひ第2図CB) K$すように得られる。Figure @1 is a 1#h diagram of 2*Maki-Zo's rotational position detector as an embodiment of the 10th series of the present invention. In FIG. 1, the rotor 1 has an iron core and the stator rcTI is eccentric. 2-1.2-2q excitation coil, S-1,3-2ij
'I'm resisting. A voltage of high frequency oscillation -4 is always applied to each excitation coil 2-1, 2-2. Here, if the air gap length L (θ) between the iron core rotor 1 and the stator is appropriately determined, each excitation coil 2-1, 2-2 and the iron core rotor 1
The magnetic resistance of the magnetic circuit, which is defeated by the rotation of the iron core rotor 1, changes as the iron core rotor 1 rotates. As a result, sinusoidal □ voltages Vl and Vz with a rotation angle of 1 mm changed by the excitation frequency (*=2*/)' of the high-frequency oscillator 4 are shown in Fig. 2 LA) and Fig. 2 CB). You can get as much as K$.
この各電圧 ■1.■2t−整流一波して差分tとると
、正弦波電圧すなわちsin #に比例する電圧■5が
第2図(C) rc示すように得られる。この電圧な鉄
芯シータ1の回転位置會示す。なお、上述の電圧v、、
v2 は電気的に180°聴れ光位置にある。Each of these voltages ■1. (2) If one wave is rectified by 2t and the difference t is taken, a voltage (5) proportional to a sine wave voltage, ie, sin #, is obtained as shown in FIG. 2(C) rc. The rotational position of the iron core theta 1 at this voltage is shown. In addition, the above-mentioned voltage v,
v2 is electrically located at a 180° listening position.
第3図は本発明の第2の実施例としての6極構造の回転
位11f噴出4の回路図である。第5図においては、鉄
芯ロータ1′は第1図の鉄芯ロータ1と形状がAなり1
また、励磁コ1ル2−5.2−4および抵抗3−5.5
−4が付加されている。FIG. 3 is a circuit diagram of a rotation position 11f jet 4 having a six-pole structure as a second embodiment of the present invention. In Figure 5, the iron core rotor 1' has a shape A and 1 as the iron core rotor 1 in Figure 1.
Also, excitation coil 1 2-5.2-4 and resistor 3-5.5
-4 is added.
コ12)場合yζu、電圧 Vl、 VZ itvtg
的Vc1a d”離れた位置にあると同時に1電圧 v
s、 V4 も電気的に180@l@九九位置にある
。第3図においても、鉄芯ロータ1′ が回転すると、
各励磁コイルと鉄芯ロータ1′ とによって’*aさr
Lる磁気回路の磁気抵抗か変化する。この結果、尚周波
発振器4の励磁周波釘によっtlj調された回転角θf
C関する正弦波状のw庄 vle v2t v5* v
4か得られる龜こfLら各電圧r整//it検波し゛C
追分tとると2つの正弦波電圧す藩わち91n3θ(V
t−Vzに相当)、cos sft (V5− V4
に相当」に比例する電圧が得られる。これらの電圧・・
ユ6債婢造の鉄芯ロータ1′の電気角倉示すことになる
。12) In case yζu, voltage Vl, VZ itvtg
Vc1a d” and at the same time one voltage v
s, V4 is also electrically located at 180@l@99 position. Also in Fig. 3, when the iron core rotor 1' rotates,
By each exciting coil and the iron core rotor 1',
The magnetic resistance of the magnetic circuit changes. As a result, the rotation angle θf adjusted by the excitation frequency nail of the frequency oscillator 4
Sinusoidal waveform related to C vle v2t v5* v
4. Each voltage r obtained from the pin fL is adjusted//it is detected.
Taking Oiwake t, two sinusoidal voltages, that is, 91n3θ(V
t-Vz), cos sft (V5-V4
A voltage proportional to "equivalent to" is obtained. These voltages...
The electric corner of the iron core rotor 1' of U6 bond construction will be shown.
なお、上述の実施例において、多極構造として2極構造
お工び6極構造會示したが、もちろん本発明は他の多極
構造にも適用し得ることは言うまでもない。In the above-described embodiments, a two-pole structure and a six-pole structure are shown as multipolar structures, but it goes without saying that the present invention can be applied to other multipolar structures.
以上説明したように本発明に工nば、従来に比較して検
出コ1ルヤ用いていないので、七の分、コづルの巻線作
業簡略化でき、従って、製造コストr低減することがで
き、しかも検出す自体も小屋化できる。As explained above, by implementing the present invention, since no detection coil is used compared to the conventional method, the winding work of the coil can be simplified by 7 times, and therefore, the manufacturing cost can be reduced. Moreover, the detection itself can be made into a shed.
fat図は本発明の第1の実施例としての2−構造の回
転位置検出器の回路−、第2図(ム)〜第2図(C)に
杭1図の回路動作を説明するための説明図、@3図は本
発明の第2の実施例としての6極構造の回転位置検出器
の回路図である。
111’:ロータ
2−1.2−2.2−3.2−4 :励磁コづルs −
1,5−2、s−3,3−4、:抵抗4:高周波発振器
鳩3図The fat diagram is a circuit of a two-structure rotational position detector as the first embodiment of the present invention, and FIGS. 2(M) to 2(C) are diagrams for explaining the circuit operation of the pile 1. The explanatory diagram, Figure @3, is a circuit diagram of a six-pole structure rotary position detector as a second embodiment of the present invention. 111': Rotor 2-1.2-2.2-3.2-4: Excitation coil s -
1, 5-2, s-3, 3-4,: Resistor 4: High frequency oscillator pigeon 3 figure
Claims (1)
イルを有するステータト、腋ステータの中心に設けられ
友鉄芯ロータと葡具備し、―記谷励磁コイルに流れる直
流を検出することにより前記鉄芯ロータの回転に応じた
回転情報個号【発生するようにしたことt%黴、・、す
る回転位置検出器。[Claims] 1. A stator having an excitation coil to which an alternating current voltage of a constant frequency is supplied; a stator provided at the center of the armpit stator and equipped with a steel core rotor; A rotational position detector that generates rotational information corresponding to the rotation of the iron core rotor by detecting the rotational speed of the iron core rotor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14774781A JPS5873802A (en) | 1981-09-21 | 1981-09-21 | Detector for rotation position |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14774781A JPS5873802A (en) | 1981-09-21 | 1981-09-21 | Detector for rotation position |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5873802A true JPS5873802A (en) | 1983-05-04 |
Family
ID=15437221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14774781A Pending JPS5873802A (en) | 1981-09-21 | 1981-09-21 | Detector for rotation position |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5873802A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020774A1 (en) * | 1994-01-31 | 1995-08-03 | The Nippon Signal Co., Ltd. | Planar type galvanomirror having a displacement detecting function and method for producing the same |
JP2009216718A (en) * | 1999-03-15 | 2009-09-24 | Amitec:Kk | Rotary position detecting apparatus |
-
1981
- 1981-09-21 JP JP14774781A patent/JPS5873802A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020774A1 (en) * | 1994-01-31 | 1995-08-03 | The Nippon Signal Co., Ltd. | Planar type galvanomirror having a displacement detecting function and method for producing the same |
US5767666A (en) * | 1994-01-31 | 1998-06-16 | The Nippon Signal Co., Ltd | Planar type mirror galvanometer incorpotating a displacement detection function |
JP2009216718A (en) * | 1999-03-15 | 2009-09-24 | Amitec:Kk | Rotary position detecting apparatus |
JP4699544B2 (en) * | 1999-03-15 | 2011-06-15 | 株式会社アミテック | Rotary position detector |
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