JPS55100088A - Brushless dc motor - Google Patents

Brushless dc motor

Info

Publication number
JPS55100088A
JPS55100088A JP793179A JP793179A JPS55100088A JP S55100088 A JPS55100088 A JP S55100088A JP 793179 A JP793179 A JP 793179A JP 793179 A JP793179 A JP 793179A JP S55100088 A JPS55100088 A JP S55100088A
Authority
JP
Japan
Prior art keywords
signal
counters
schumit
rom
frequency generator
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
JP793179A
Other languages
Japanese (ja)
Other versions
JPS6235354B2 (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 JP793179A priority Critical patent/JPS55100088A/en
Publication of JPS55100088A publication Critical patent/JPS55100088A/en
Publication of JPS6235354B2 publication Critical patent/JPS6235354B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To reduce the occurrence of torque ripple of brush-less motor by a method wherein the sine wave information stored in the memory is read out by means of a signal synchronized with the rotor revolution to form a stator coil current.
CONSTITUTION: The signal FG in response to the rotor revolution speed obtained from the frequency generator 22 is put into the counters 25, 26 by means of the amplifier 23 and the Schumit trigger circuit 24. The counters 25, 26 digitize the signal FG and designate the address of ROM 20, 21 where the waveform information put in sampling based on the tooth number of the frequency generator 22 is stored. And further, the counter 36 which is pre-set by the output signal MD of the detection head 33 digitizes the pulses of the Schumit trigger circuit 24 to send out the carry-pulse CA and receiving this output signal, the counters 25, 26 read out ROM 20, 21. And this information is supplied to the coils 4, 5 through the D/A converters 27, 28, the amplifiers 29, 30 and the drive circuits 31, 32.
COPYRIGHT: (C)1980,JPO&Japio
JP793179A 1979-01-25 1979-01-25 Brushless dc motor Granted JPS55100088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP793179A JPS55100088A (en) 1979-01-25 1979-01-25 Brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP793179A JPS55100088A (en) 1979-01-25 1979-01-25 Brushless dc motor

Publications (2)

Publication Number Publication Date
JPS55100088A true JPS55100088A (en) 1980-07-30
JPS6235354B2 JPS6235354B2 (en) 1987-07-31

Family

ID=11679257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP793179A Granted JPS55100088A (en) 1979-01-25 1979-01-25 Brushless dc motor

Country Status (1)

Country Link
JP (1) JPS55100088A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007511191A (en) * 2003-11-06 2007-04-26 コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト Device for operating a synchronous machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01284867A (en) * 1988-05-11 1989-11-16 Sharp Corp Electrophotographic printer device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555010A (en) * 1978-06-23 1980-01-14 Nippon Telegr & Teleph Corp <Ntt> Method of driving brushless motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555010A (en) * 1978-06-23 1980-01-14 Nippon Telegr & Teleph Corp <Ntt> Method of driving brushless motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007511191A (en) * 2003-11-06 2007-04-26 コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト Device for operating a synchronous machine

Also Published As

Publication number Publication date
JPS6235354B2 (en) 1987-07-31

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