JPS5468914A - Dc brushless motor - Google Patents

Dc brushless motor

Info

Publication number
JPS5468914A
JPS5468914A JP13530077A JP13530077A JPS5468914A JP S5468914 A JPS5468914 A JP S5468914A JP 13530077 A JP13530077 A JP 13530077A JP 13530077 A JP13530077 A JP 13530077A JP S5468914 A JPS5468914 A JP S5468914A
Authority
JP
Japan
Prior art keywords
voltages
rotor
torque
constant
sine wave
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
JP13530077A
Other languages
Japanese (ja)
Inventor
Susumu Oota
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP13530077A priority Critical patent/JPS5468914A/en
Publication of JPS5468914A publication Critical patent/JPS5468914A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To keep the torque constant independently of perfmanent magnet rotor, by causing magnetism-sensitive elements to generate sine wave voltages and performing the pulse width modulation of the voltages and then applying the voltages to the armature coil.
CONSTITUTION: Hall elements H1, H2 are located near the permanet magnet rotor R and are supplied with driving currents of magnitudes corresponding to motor control signals to generate the sine wave voltages corresponding to the rotation of the rotor R. The voltages VH1, VH2 are pulse-width modulated by pulse width modulators W1, W2 and then applied to the armature coils W1, W2 through power amplifiers A1, A2. Therefore, a constant torque is caused independintly of the rotational angle of the rotor R. The magnitude of the torque is proportional to those of the currents supplied to the Hall elements H1, H2. Thus, the starting voltage can be made constant and low.
COPYRIGHT: (C)1979,JPO&Japio
JP13530077A 1977-11-11 1977-11-11 Dc brushless motor Pending JPS5468914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13530077A JPS5468914A (en) 1977-11-11 1977-11-11 Dc brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13530077A JPS5468914A (en) 1977-11-11 1977-11-11 Dc brushless motor

Publications (1)

Publication Number Publication Date
JPS5468914A true JPS5468914A (en) 1979-06-02

Family

ID=15148472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13530077A Pending JPS5468914A (en) 1977-11-11 1977-11-11 Dc brushless motor

Country Status (1)

Country Link
JP (1) JPS5468914A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117196U (en) * 1979-02-13 1980-08-19
JPS5854884A (en) * 1981-09-26 1983-03-31 Hitachi Ltd DC motor control method
JP2008043199A (en) * 2007-09-21 2008-02-21 Seiko Epson Corp Motor and motor drive system
JP2008043200A (en) * 2007-09-21 2008-02-21 Seiko Epson Corp Motor and motor drive system
US7956562B2 (en) 2004-03-02 2011-06-07 Seiko Epson Corporation Motor and motor drive system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117196U (en) * 1979-02-13 1980-08-19
JPS5854884A (en) * 1981-09-26 1983-03-31 Hitachi Ltd DC motor control method
US7956562B2 (en) 2004-03-02 2011-06-07 Seiko Epson Corporation Motor and motor drive system
JP2008043199A (en) * 2007-09-21 2008-02-21 Seiko Epson Corp Motor and motor drive system
JP2008043200A (en) * 2007-09-21 2008-02-21 Seiko Epson Corp Motor and motor drive system

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