JPS5574385A - Quick stop system for brushless dc motor - Google Patents

Quick stop system for brushless dc motor

Info

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
Application number
JP14557978A
Other languages
Japanese (ja)
Inventor
Hiroshi Kuribayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP14557978A priority Critical patent/JPS5574385A/en
Publication of JPS5574385A publication Critical patent/JPS5574385A/en
Pending legal-status Critical Current

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  • 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
JP14557978A 1978-11-25 1978-11-25 Quick stop system for brushless dc motor Pending JPS5574385A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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