JPS57116574A - 3-phase brushless motor - Google Patents
3-phase brushless motorInfo
- Publication number
- JPS57116574A JPS57116574A JP56002944A JP294481A JPS57116574A JP S57116574 A JPS57116574 A JP S57116574A JP 56002944 A JP56002944 A JP 56002944A JP 294481 A JP294481 A JP 294481A JP S57116574 A JPS57116574 A JP S57116574A
- Authority
- JP
- Japan
- Prior art keywords
- interval
- poles
- detectors
- magnet
- position detector
- 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE:To simplify a motor drive circuit having a rotary position detector by sequentially energizing 3-phase coils one by one in response to a signal obtained from the position detector. CONSTITUTION:A rotor magnet 1 is magnetized to four poles, and a shaft 2 is secured to the center of the magnet. Three armature cores 4a-4c are provided on the planar surface of a stator, and salient poles 5a, 5b are formed at both ends of the respective cores 4a-4c. The interval between the poles 5a and 5b is set at 90 deg., and 3-phase coils P1-P3 are wound on one pole 5a of the respective cores 4a-4c. The interval between the coils is at 120 deg.. Rotor position detecting colored parts 6a, 6b, 6a' are formed at the peripheral surface of the rotor magnet 1, and detectors S1, S2 having light emitting elements are disposed closely and opposite to the colored parts at the stator side. The interval between the detectors S1 and S2 is at 120 deg..
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56002944A JPS57116574A (en) | 1981-01-12 | 1981-01-12 | 3-phase brushless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56002944A JPS57116574A (en) | 1981-01-12 | 1981-01-12 | 3-phase brushless motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57116574A true JPS57116574A (en) | 1982-07-20 |
Family
ID=11543468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56002944A Pending JPS57116574A (en) | 1981-01-12 | 1981-01-12 | 3-phase brushless motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57116574A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6261183U (en) * | 1985-10-07 | 1987-04-16 | ||
JPS6261184U (en) * | 1985-10-07 | 1987-04-16 | ||
JPS6288471U (en) * | 1985-11-22 | 1987-06-05 |
-
1981
- 1981-01-12 JP JP56002944A patent/JPS57116574A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6261183U (en) * | 1985-10-07 | 1987-04-16 | ||
JPS6261184U (en) * | 1985-10-07 | 1987-04-16 | ||
JPH0528939Y2 (en) * | 1985-10-07 | 1993-07-26 | ||
JPS6288471U (en) * | 1985-11-22 | 1987-06-05 |
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