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JPS5546890A - Driving circuit for brushless dc motor - Google Patents

Driving circuit for brushless dc motor

Info

Publication number
JPS5546890A
JPS5546890A JP11951678A JP11951678A JPS5546890A JP S5546890 A JPS5546890 A JP S5546890A JP 11951678 A JP11951678 A JP 11951678A JP 11951678 A JP11951678 A JP 11951678A JP S5546890 A JPS5546890 A JP S5546890A
Authority
JP
Japan
Prior art keywords
junction
amplifier
holding
pulses
brushless
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
Application number
JP11951678A
Other languages
Japanese (ja)
Other versions
JPS6143956B2 (en
Inventor
Hiroyuki Yamauchi
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP11951678A priority Critical patent/JPS5546890A/en
Publication of JPS5546890A publication Critical patent/JPS5546890A/en
Publication of JPS6143956B2 publication Critical patent/JPS6143956B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE: To increase the peak value of a current and to reduce torque ripples by supplying a pulse current to a Hall element and by sample-holding the output voltage of the element by the pulses which are in synchronization with the pulse period.
CONSTITUTION: A first switching element 26 is inserted between the junction of a first and second resistors 22 and 23 and one input terminal of an operation amplifier 11, and a second switching element 27 is inserted between the junction of a third and fourth resistors 24 and 25 and the other terminal of the operation amplifier 11. A first holding capacitor 28 is connected between the junction of the first element 26 and the amplifier 11 and the output terminal of a final-stage amplifier, and a second holding capacitor 29 is connected between the junction of the second element 27 and the amplifier 11 and the ground. To the first and second elements 26 and 27, are supplied sampling pulses which are in synchronization with pulses of a pulse current supplied from a holding element 6. In this constitution, torque ripples can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP11951678A 1978-09-28 1978-09-28 Driving circuit for brushless dc motor Granted JPS5546890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11951678A JPS5546890A (en) 1978-09-28 1978-09-28 Driving circuit for brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11951678A JPS5546890A (en) 1978-09-28 1978-09-28 Driving circuit for brushless dc motor

Publications (2)

Publication Number Publication Date
JPS5546890A true JPS5546890A (en) 1980-04-02
JPS6143956B2 JPS6143956B2 (en) 1986-09-30

Family

ID=14763196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11951678A Granted JPS5546890A (en) 1978-09-28 1978-09-28 Driving circuit for brushless dc motor

Country Status (1)

Country Link
JP (1) JPS5546890A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703236A (en) * 1985-11-26 1987-10-27 U.S. Philips Corporation Brushless d.c. motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703236A (en) * 1985-11-26 1987-10-27 U.S. Philips Corporation Brushless d.c. motor

Also Published As

Publication number Publication date
JPS6143956B2 (en) 1986-09-30

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