JPS631395A - Drive circuit for brushless motor - Google Patents

Drive circuit for brushless motor

Info

Publication number
JPS631395A
JPS631395A JP61143218A JP14321886A JPS631395A JP S631395 A JPS631395 A JP S631395A JP 61143218 A JP61143218 A JP 61143218A JP 14321886 A JP14321886 A JP 14321886A JP S631395 A JPS631395 A JP S631395A
Authority
JP
Japan
Prior art keywords
motor
starting
processor
drive circuit
speed
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
JP61143218A
Other languages
Japanese (ja)
Inventor
Hiromi Nakase
Koichi Yamada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP61143218A priority Critical patent/JPS631395A/en
Publication of JPS631395A publication Critical patent/JPS631395A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/20Arrangements for starting

Abstract

PURPOSE:To improve the starting operation of a motor by starting the motor from its stopping state by means of a motor drive circuit, and switching to a motor drive by a phase detection energizing circuit when the rotating speed of the motor exceeds a set speed. CONSTITUTION:Data for setting the starting speed variation of a motor 5 is stored in a memory circuit 9, and is set in a counter 8. A logic processor 7 inputs the output of the counter 8 at the time of starting and starts the motor 5 from its stopping state. When the rotating speed of the motor 5 exceeds a set speed, the processor 7 inputs the output of a comparator 6 and drives the motor by means of phase detection energization. When the stop of the motor 5 is detected by an output signal from a rotation detector 14 from the starting time, the processor 7 again starts the motor.
JP61143218A 1986-06-19 1986-06-19 Drive circuit for brushless motor Pending JPS631395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61143218A JPS631395A (en) 1986-06-19 1986-06-19 Drive circuit for brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61143218A JPS631395A (en) 1986-06-19 1986-06-19 Drive circuit for brushless motor

Publications (1)

Publication Number Publication Date
JPS631395A true JPS631395A (en) 1988-01-06

Family

ID=15333635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61143218A Pending JPS631395A (en) 1986-06-19 1986-06-19 Drive circuit for brushless motor

Country Status (1)

Country Link
JP (1) JPS631395A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475493A (en) * 1990-07-13 1992-03-10 Matsushita Electric Ind Co Ltd Commutatorless dc motor
JPH05284781A (en) * 1992-03-30 1993-10-29 Toshiba Corp Controller for sensorless spindle motor
JP2002223583A (en) * 2001-01-25 2002-08-09 Nec Kansai Ltd Brushless motor driving device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475493A (en) * 1990-07-13 1992-03-10 Matsushita Electric Ind Co Ltd Commutatorless dc motor
JPH05284781A (en) * 1992-03-30 1993-10-29 Toshiba Corp Controller for sensorless spindle motor
JP2002223583A (en) * 2001-01-25 2002-08-09 Nec Kansai Ltd Brushless motor driving device

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