JPS60152298A - Rotation detector of step motor - Google Patents
Rotation detector of step motorInfo
- Publication number
- JPS60152298A JPS60152298A JP555284A JP555284A JPS60152298A JP S60152298 A JPS60152298 A JP S60152298A JP 555284 A JP555284 A JP 555284A JP 555284 A JP555284 A JP 555284A JP S60152298 A JPS60152298 A JP S60152298A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotation
- step motor
- stator
- coil
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step
- H02P8/14—Arrangements for controlling speed or speed and torque
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、ステップモータの回転検出に係り、特に安価
に好適なステップモータの回転検出に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to detection of rotation of a step motor, and particularly to detection of rotation of a step motor that is inexpensive and suitable.
従来のステップモータの回転検出を第１図により説明す
る。第１図において、１は固定子、２は回転子、３は駆
動装置、４は回転板、５は発光素子、６は受光素子、７
は波形整形装置である。回転子２が回転すると、回転板
４が回転し受光素子の出力により回転を検出していた。Detection of rotation of a conventional step motor will be explained with reference to FIG. In FIG. 1, 1 is a stator, 2 is a rotor, 3 is a drive device, 4 is a rotating plate, 5 is a light emitting element, 6 is a light receiving element, and 7
is a waveform shaping device. When the rotor 2 rotates, the rotating plate 4 rotates, and the rotation is detected by the output of the light receiving element.
回転板の取付精度を高くするための調整が困難で、高価
になるという欠点があった。The disadvantage is that it is difficult to make adjustments to increase the mounting accuracy of the rotating plate, and it is expensive.
本発明の目的は、安価なステップモータの回転検出装置
を提供することにある。An object of the present invention is to provide an inexpensive step motor rotation detection device.
本発明は、励磁コイルに発生する逆起電圧を用いて回転
を検出することにより無調整化にでき、価格を改善する
ものである。The present invention detects the rotation using the back electromotive force generated in the excitation coil, thereby eliminating the need for adjustment and improving the cost.
以下、本発明の一実施例を第２図により説明する。第２
図において、１は固定子、２は回転子。An embodiment of the present invention will be described below with reference to FIG. Second
In the figure, 1 is a stator and 2 is a rotor.
３はステップモータの駆動装置、８は回転検出用固定子
、９は回転検出用回転子、１０は波形整形装置である。3 is a step motor drive device, 8 is a rotation detection stator, 9 is a rotation detection rotor, and 10 is a waveform shaping device.
ステップモータの回転検出袋ぽは、固定子８、回転子９
、および波形整形装置１０で構成される。駆動装置３ま
たは外力により回転子１が回転すると、同一軸に取付け
られた回転子９が回転する。回転子９が回転すると、回
転子９に用いた永久磁石により固定子８に巻かれたコイ
ルの磁界が変化し、コイルに逆起電圧が発生する。The rotation detection bag of the step motor is stator 8 and rotor 9.
, and a waveform shaping device 10. When the rotor 1 is rotated by the drive device 3 or an external force, the rotor 9 attached to the same shaft rotates. When the rotor 9 rotates, the magnetic field of the coil wound around the stator 8 changes due to the permanent magnet used in the rotor 9, and a back electromotive force is generated in the coil.
コイルに発生する逆起電圧は、磁界はの変化すなわち回
転子９の回転速度に応じて変化するため、波形整形装置
１０で波形を整形し回転子９の回転速度に列して一定レ
ベルにする。波形整形装置１０の出力により回転子２の
回転を検出する。固定子８にコイルを多重巻にし、各コ
イルの；φ起電圧の整形波形を比較することにより、回
転子２の回転方向を検出する。また、ステップモータか
回転中に外力等により回転が妨げら第１た時は、回転子
９も回転を妨げられ固定子８巻かれたコイルに逆起電圧
が発生しなくなる。波形整形装置１０の出力も零になり
ステップモータが停止した事を検出する。回転の有無お
よび回転方向、回転角度を検出し、ステップモータの回
転制御を行なう。第３図は、固定子１１に励磁コイルの
他に検出用コイルを別巻にした実施例である。本実施例
によ負ば、ステップモータの組立が容易になり安価にな
る効果がある。Since the back electromotive force generated in the coil changes depending on the change in the magnetic field, that is, the rotational speed of the rotor 9, the waveform is shaped by the waveform shaping device 10 so that it is at a constant level in line with the rotational speed of the rotor 9. . The rotation of the rotor 2 is detected by the output of the waveform shaping device 10. The stator 8 is wound with multiple coils, and the rotational direction of the rotor 2 is detected by comparing the shaped waveforms of the ;φ electromotive force of each coil. Further, when the rotation of the step motor is prevented by an external force or the like while it is rotating, the rotor 9 is also prevented from rotating and no back electromotive voltage is generated in the coil wound around the stator 8. The output of the waveform shaping device 10 also becomes zero, and it is detected that the step motor has stopped. It detects the presence or absence of rotation, the direction of rotation, and the angle of rotation, and controls the rotation of the step motor. FIG. 3 shows an embodiment in which the stator 11 has a detection coil wound separately in addition to the excitation coil. According to this embodiment, the step motor can be easily assembled and the cost can be reduced.
本発明によれば、無調整化により組立か容易になり、か
つ安価になる等の効果がある。According to the present invention, there are effects such as ease of assembly due to no adjustment and cost reduction.
第１図は、従来のエンコーダイ＝Ｊステップモータの構
造図および周辺装置図、第２図は１回転子および固定子
を別に設けた回転検出装置伺ステップモータの構造図お
よび周辺装置図、第３図は１回転子を共用する回転検出
装置付ステップモータの構造図および周辺装置図である
。
１・・固定子、２ ・回転子、３・・駆動装置、４・・
回転板、５・・発光素子、６・・・受光素子、７・・・
波形整形装置、８・固定子、９ 回転子、１０ 波形整
形装置、１１・・固定子、１２・波形寮１図
不２日Fig. 1 is a structural diagram and peripheral device diagram of a conventional encoder-J step motor, and Fig. 2 is a structural diagram and peripheral device diagram of a step motor with a rotation detection device in which one rotor and stator are separately provided. FIG. 3 is a structural diagram and peripheral device diagram of a step motor with a rotation detection device that shares one rotor. 1. Stator, 2. Rotor, 3. Drive device, 4.
Rotating plate, 5... light emitting element, 6... light receiving element, 7...
Waveform shaping device, 8・Stator, 9 Rotor, 10 Waveform shaping device, 11・Stator, 12・Waveform dormitory 1 (not shown)
Claims (1)
ルから成るステップモータにおいて、励磁コイルに発生
する逆起電圧を用いて回転を検出することを特徴とする
ステップモータの回転検出装置。 ２、 回転子と固定子および励磁コイルから成るステッ
プモータにおいて同期して回転する永久磁石を用いた回
転子と固定子および励磁コイルを設けたことを特徴とす
るステップモータの回転検出装置。[Claims] 1. A step motor consisting of a rotor and a stator using permanent magnets, and an excitation coil, characterized in that rotation is detected using a back electromotive force generated in the excitation coil. Rotation detection device. 2. A rotation detecting device for a step motor, characterized in that a step motor consisting of a rotor, a stator, and an excitation coil is provided with a rotor, a stator, and an excitation coil using permanent magnets that rotate synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP555284A JPS60152298A (en) | 1984-01-18 | 1984-01-18 | Rotation detector of step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP555284A JPS60152298A (en) | 1984-01-18 | 1984-01-18 | Rotation detector of step motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60152298A true JPS60152298A (en) | 1985-08-10 |
Family
ID=11614356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP555284A Pending JPS60152298A (en) | 1984-01-18 | 1984-01-18 | Rotation detector of step motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60152298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0407654A2 (en) * | 1989-06-19 | 1991-01-16 | VDO Adolf Schindling AG | Indicator device and method of determining the absolute position of a pointer in the same |
-
1984
- 1984-01-18 JP JP555284A patent/JPS60152298A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0407654A2 (en) * | 1989-06-19 | 1991-01-16 | VDO Adolf Schindling AG | Indicator device and method of determining the absolute position of a pointer in the same |
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