JPS5574385A - Quick stop system for brushless dc motor - Google Patents
Quick stop system for brushless dc motorInfo
- Publication number
- JPS5574385A JPS5574385A JP14557978A JP14557978A JPS5574385A JP S5574385 A JPS5574385 A JP S5574385A JP 14557978 A JP14557978 A JP 14557978A JP 14557978 A JP14557978 A JP 14557978A JP S5574385 A JPS5574385 A JP S5574385A
- Authority
- JP
- Japan
- Prior art keywords
- revolutions
- motor
- detector
- stop
- output
- 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 Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE: To operate accurate quick stop control, by providing number of revolutions detectors, which detect the rotation and stop of the motor.
CONSTITUTION: On rotary shaft 2 of brushless DC motor 1 are provided No.1 number of revolutions detector 3, which outputs a signal poroportional to the number of revolutions of the motor, No.2 number of revolutions detector 10, which discriminates the rotation and stop of the motor, and position detector 4, which detects the position of the rotor. The output of No.1 number of revolutions detector 3 is fed to drive circuit 6 via control circuit 5. When a stop command is issued from motor stop command circuit 8, drive circuit 6 reverses the direction of power supply to the rotor coil and operates quick braking action. Then, number of revolutions detector 9 produces an output when the output of No.2 number of revolutions detector is cut off. Power supply to drive circuit 6 is stopped when the number of revolutions becomes nearly zero.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14557978A JPS5574385A (en) | 1978-11-25 | 1978-11-25 | Quick stop system for brushless dc motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14557978A JPS5574385A (en) | 1978-11-25 | 1978-11-25 | Quick stop system for brushless dc motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5574385A true JPS5574385A (en) | 1980-06-04 |
Family
ID=15388354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14557978A Pending JPS5574385A (en) | 1978-11-25 | 1978-11-25 | Quick stop system for brushless dc motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5574385A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4549120A (en) * | 1982-07-19 | 1985-10-22 | Pioneer Electronic Corporation | Turntable dc brushless motor stopping control |
US4629949A (en) * | 1983-11-01 | 1986-12-16 | Pioneer Electronic Corporation | Apparatus for driving a turntable of a disc player system |
US4739231A (en) * | 1983-06-16 | 1988-04-19 | Canon Kabushiki Kaisha | Image forming system |
JPH01238481A (en) * | 1988-03-17 | 1989-09-22 | Matsushita Electric Ind Co Ltd | Stopper for motor |
-
1978
- 1978-11-25 JP JP14557978A patent/JPS5574385A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4549120A (en) * | 1982-07-19 | 1985-10-22 | Pioneer Electronic Corporation | Turntable dc brushless motor stopping control |
US4739231A (en) * | 1983-06-16 | 1988-04-19 | Canon Kabushiki Kaisha | Image forming system |
US4629949A (en) * | 1983-11-01 | 1986-12-16 | Pioneer Electronic Corporation | Apparatus for driving a turntable of a disc player system |
JPH01238481A (en) * | 1988-03-17 | 1989-09-22 | Matsushita Electric Ind Co Ltd | Stopper for motor |
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