JPS5466416A - Brushless motor - Google Patents
Brushless motorInfo
- Publication number
- JPS5466416A JPS5466416A JP13370877A JP13370877A JPS5466416A JP S5466416 A JPS5466416 A JP S5466416A JP 13370877 A JP13370877 A JP 13370877A JP 13370877 A JP13370877 A JP 13370877A JP S5466416 A JPS5466416 A JP S5466416A
- Authority
- JP
- Japan
- Prior art keywords
- differential
- output currents
- stator
- current
- brushless motor
- 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.)
- Granted
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE: Not to generate a vibration in the winding, by smoothly switching a current in each stator winding, with a conduction angle of each stator winding in the brushless motor made below 180°.
CONSTITUTION: Output terminals A, -A and B, -B Hall elements, 110, 111, connected in parallel to a DC power source +E2, are connected to differential amplifiers 112a, 112b, 115a, 115b,116a,116b respectively, with a rotating position of the rotor being detected. Current mirror circuits 114a, 114b are connected to the respective differential amplifier circuits, and collector output currents IA, I-A of a first differential transistor are given to common emitters of two sets of differential transistors 115 and 116, and output currents IA-B, IAB of a second differential transistor 115 and output currents I-AB, I-A-B of the differential transistor 116 are made while switching at every 90° to stator windings 121a to 121d through transistors 120a to 120d, to successively and smoothly control a stator current.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52133708A JPS5927196B2 (en) | 1977-11-07 | 1977-11-07 | brushless electric motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52133708A JPS5927196B2 (en) | 1977-11-07 | 1977-11-07 | brushless electric motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5466416A true JPS5466416A (en) | 1979-05-29 |
JPS5927196B2 JPS5927196B2 (en) | 1984-07-04 |
Family
ID=15111024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52133708A Expired JPS5927196B2 (en) | 1977-11-07 | 1977-11-07 | brushless electric motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5927196B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5944992A (en) * | 1982-09-03 | 1984-03-13 | Citizen Watch Co Ltd | Drive circuit for motor |
-
1977
- 1977-11-07 JP JP52133708A patent/JPS5927196B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5944992A (en) * | 1982-09-03 | 1984-03-13 | Citizen Watch Co Ltd | Drive circuit for motor |
JPH0561877B2 (en) * | 1982-09-03 | 1993-09-07 | Citizen Watch Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS5927196B2 (en) | 1984-07-04 |
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