JPS562566A - Detecting method for rotation of motor - Google Patents
Detecting method for rotation of motorInfo
- Publication number
- JPS562566A JPS562566A JP7783379A JP7783379A JPS562566A JP S562566 A JPS562566 A JP S562566A JP 7783379 A JP7783379 A JP 7783379A JP 7783379 A JP7783379 A JP 7783379A JP S562566 A JPS562566 A JP S562566A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- rotation
- pole
- magnetic
- stators
- 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
Landscapes
- Dc Machiner (AREA)
Abstract
PURPOSE: To detect accurately a motor turning by arranging a sensor between a couple of stators and by detecting a change in magnetic field due to passing by stators.
CONSTITUTION: Direct-current magnet motor 1 changes in magnetic polarity by electric power feed several times in single rotation and its rotation is maintained by attraction and repulsion action between stators 3 and 4. Therefore, as the magnetic pole moves from the position indicated by line (b) to that by line (c), the magnetic pole changes from pole S to pole N at the position by line (a) and pole sensor 9 consisting of a Hall element, etc., is applied with alternate S and N magnetic fields. As a result, sensor 9, affected by alternating magnetic fields in the order of N, S, N, S..., generates electric signals, which serve as signals detecting the rotation of the motor. Therefore, the rotation of the motor is detected with precision and those signals are passed through a detecting circuit, amplifying circuit, etc., for control over the motor.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7783379A JPS562566A (en) | 1979-06-20 | 1979-06-20 | Detecting method for rotation of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7783379A JPS562566A (en) | 1979-06-20 | 1979-06-20 | Detecting method for rotation of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS562566A true JPS562566A (en) | 1981-01-12 |
Family
ID=13645035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7783379A Pending JPS562566A (en) | 1979-06-20 | 1979-06-20 | Detecting method for rotation of motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS562566A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63187567U (en) * | 1987-05-26 | 1988-12-01 | ||
| JPH05211747A (en) * | 1991-08-27 | 1993-08-20 | Robert Bosch Gmbh | Electric motor with device for detecting position of rotor, number of revolution and/or direction of rotation |
| US6522130B1 (en) | 1998-07-20 | 2003-02-18 | Uqm Technologies, Inc. | Accurate rotor position sensor and method using magnet and sensors mounted adjacent to the magnet and motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4869015A (en) * | 1971-12-22 | 1973-09-20 | ||
| JPS5234008B2 (en) * | 1973-05-31 | 1977-09-01 |
-
1979
- 1979-06-20 JP JP7783379A patent/JPS562566A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4869015A (en) * | 1971-12-22 | 1973-09-20 | ||
| JPS5234008B2 (en) * | 1973-05-31 | 1977-09-01 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63187567U (en) * | 1987-05-26 | 1988-12-01 | ||
| JPH05211747A (en) * | 1991-08-27 | 1993-08-20 | Robert Bosch Gmbh | Electric motor with device for detecting position of rotor, number of revolution and/or direction of rotation |
| US6522130B1 (en) | 1998-07-20 | 2003-02-18 | Uqm Technologies, Inc. | Accurate rotor position sensor and method using magnet and sensors mounted adjacent to the magnet and motor |
| US6693422B2 (en) | 1998-07-20 | 2004-02-17 | Uqm Technologies, Inc. | Accurate rotor position sensor and method using magnet and sensors mounted adjacent to the magnet and motor |
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