JPS6469296A - Controlling circuit for brushless motor - Google Patents
Controlling circuit for brushless motorInfo
- Publication number
- JPS6469296A JPS6469296A JP62224050A JP22405087A JPS6469296A JP S6469296 A JPS6469296 A JP S6469296A JP 62224050 A JP62224050 A JP 62224050A JP 22405087 A JP22405087 A JP 22405087A JP S6469296 A JPS6469296 A JP S6469296A
- Authority
- JP
- Japan
- Prior art keywords
- roms
- brushless motor
- supplied
- trapezoidal
- forming
- 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
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE:To reduce torque ripples and to obtain a sufficient torque by forming the waveform of a winding current input to phase coils of a drive winding to be of a trapezoidal wave. CONSTITUTION:An angle position signal 10a from an angle sensor 10 obtained by the rotation of the rotor of a brushless motor 7 is supplied to ROMs 13, 13A and 13B. A trapezoidal wave forming software for forming a trapezoidal wave is stored in the ROMs 13, 13A and 13B. The trapezoidal waves from the ROMs 13, 13A and 13B are supplied through multipliers 12, 12A and 12B to input terminals 2, 2A and 2B, and the current waveforms supplied to coils 7a, 7b and 7c become trapezoidal waves.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224050A JPS6469296A (en) | 1987-09-09 | 1987-09-09 | Controlling circuit for brushless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224050A JPS6469296A (en) | 1987-09-09 | 1987-09-09 | Controlling circuit for brushless motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6469296A true JPS6469296A (en) | 1989-03-15 |
Family
ID=16807804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224050A Pending JPS6469296A (en) | 1987-09-09 | 1987-09-09 | Controlling circuit for brushless motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6469296A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03293990A (en) * | 1990-04-12 | 1991-12-25 | Nishishiba Electric Co Ltd | Controller for ac motor |
JP2002369569A (en) * | 2001-06-04 | 2002-12-20 | Nsk Ltd | Brushless motor drive control unit |
-
1987
- 1987-09-09 JP JP62224050A patent/JPS6469296A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03293990A (en) * | 1990-04-12 | 1991-12-25 | Nishishiba Electric Co Ltd | Controller for ac motor |
JP2002369569A (en) * | 2001-06-04 | 2002-12-20 | Nsk Ltd | Brushless motor drive control unit |
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