JPS5671488A - Brushless dc motor - Google Patents

Brushless dc motor

Info

Publication number
JPS5671488A
JPS5671488A JP14809179A JP14809179A JPS5671488A JP S5671488 A JPS5671488 A JP S5671488A JP 14809179 A JP14809179 A JP 14809179A JP 14809179 A JP14809179 A JP 14809179A JP S5671488 A JPS5671488 A JP S5671488A
Authority
JP
Japan
Prior art keywords
magnetic field
memory
rotor
information
rotor magnet
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
JP14809179A
Other languages
Japanese (ja)
Inventor
Hiroyuki Yamauchi
Tamotsu Yamagami
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 JP14809179A priority Critical patent/JPS5671488A/en
Publication of JPS5671488A publication Critical patent/JPS5671488A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To obtain a brushless motor having no torque ripple by reading strainless sine wave information stored in a memory in synchronism with the magnetic field detection signal from a rotor magnet and forming a coil current from the read information. CONSTITUTION:A rotor revolving speed correspondence signal FG from a frequency generator 23 is counted by an address counter in synchronism with a magnetic field by a rotor magnet, sampled value corresponding to the signal repetition number of the generator 23 per revolution of the rotor and the number of sampling relative to the magnetic field from the rotor magnet in two phase coils are stored as digital drive signal waveform information in a memory 21. The information includes one bit for identivying the phase and the residue being the same as the output code of the address counter 22. The read waveform information of the memory 21 is inputted through latch circuits 32, 42 by a timing pulse PFG to the driving circuits 36, 46, and the motor is thus driven.
JP14809179A 1979-11-15 1979-11-15 Brushless dc motor Pending JPS5671488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14809179A JPS5671488A (en) 1979-11-15 1979-11-15 Brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14809179A JPS5671488A (en) 1979-11-15 1979-11-15 Brushless dc motor

Publications (1)

Publication Number Publication Date
JPS5671488A true JPS5671488A (en) 1981-06-15

Family

ID=15445030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14809179A Pending JPS5671488A (en) 1979-11-15 1979-11-15 Brushless dc motor

Country Status (1)

Country Link
JP (1) JPS5671488A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043089A (en) * 1983-08-16 1985-03-07 Shibaura Eng Works Co Ltd Control circuit for ac servo motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043089A (en) * 1983-08-16 1985-03-07 Shibaura Eng Works Co Ltd Control circuit for ac servo motor

Similar Documents

Publication Publication Date Title
JPS5674094A (en) Brushless dc motor
US4874993A (en) Sensorless brushless motor
US4162435A (en) Method and apparatus for electronically commutating a direct current motor without position sensors
GB1286434A (en) Brushless dynamo electric machines
KR100258434B1 (en) Driving dircuit for a 3-phase bldc motor using 1-hall signal
SE9002420L (en) CONVERTER 3
US4717864A (en) Speed control method and apparatus for electronically commutated motors
KR900005669B1 (en) Motor drive device
US3848167A (en) Arrangement for generating a clock frequency signal for recording information on a data carrier
JPS5671488A (en) Brushless dc motor
JPS5671489A (en) Brushless dc motor
US4714878A (en) Apparatus for forming the actual value of a torque in a three-phase synchronous machine with current-block feeding
JPS55109188A (en) Brushless dc motor
JP2658085B2 (en) Brushless DC motor
JPS55100084A (en) Brushless dc motor
JPS55100088A (en) Brushless dc motor
JPH08266084A (en) Rotor position sensing device of brushless motor
JPS5674093A (en) Brushless dc motor
JPS56162987A (en) Commutatorless dc motor
USH939H (en) Commutator pulse tachometer
JPS55106095A (en) Brushless dc motor
KR100624086B1 (en) A generator of hall signal using of one hall sensor in the BLDC motor
JPS5453204A (en) Frequency generator
SU913304A1 (en) Device for synchronous driving of well-logging analog recorder
JPS5678386A (en) Brushless dc motor