JPS5467620A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS5467620A
JPS5467620A JP13418977A JP13418977A JPS5467620A JP S5467620 A JPS5467620 A JP S5467620A JP 13418977 A JP13418977 A JP 13418977A JP 13418977 A JP13418977 A JP 13418977A JP S5467620 A JPS5467620 A JP S5467620A
Authority
JP
Japan
Prior art keywords
transistors
brushless motor
stator windings
currents
current
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
JP13418977A
Other languages
Japanese (ja)
Other versions
JPS5927197B2 (en
Inventor
Noriaki Wakabayashi
Takeshi Shimamoto
Yoshiaki Igarashi
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 JP52134189A priority Critical patent/JPS5927197B2/en
Publication of JPS5467620A publication Critical patent/JPS5467620A/en
Publication of JPS5927197B2 publication Critical patent/JPS5927197B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To prevent S/N ratio of a brushless motor from deteriorating at winding switching time by reducing the current phase angles of the respective stator windings smaller than 180° and smoothly switching the currents in the respective stator windings regardless of the magnetic waveform of the main permanent magnet of the rotor of the motor.
CONSTITUTION: When the rotor of a brushless motor is revolved, the outputs A, -A of a hall element 210 are applied to the bases of first differential transistors 212a, 212b. The two outputs B, -B of a hall element 211 are applied respectively to two differential transistors 215, 216. The collector currents IA, I-A of the transistors 212a, 212b flow to the emitters of the transistors 215, 216. The output currents IA-B, IA-B, I-A-B, I-AB from the transistors 215, 216 are applied to the transistors 220 a to 220b to cause the current flowing through stator windings 212a to 212d become phase angle of 90° so as to smoothly switch the current.
COPYRIGHT: (C)1979,JPO&Japio
JP52134189A 1977-11-08 1977-11-08 brushless electric motor Expired JPS5927197B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52134189A JPS5927197B2 (en) 1977-11-08 1977-11-08 brushless electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52134189A JPS5927197B2 (en) 1977-11-08 1977-11-08 brushless electric motor

Publications (2)

Publication Number Publication Date
JPS5467620A true JPS5467620A (en) 1979-05-31
JPS5927197B2 JPS5927197B2 (en) 1984-07-04

Family

ID=15122505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52134189A Expired JPS5927197B2 (en) 1977-11-08 1977-11-08 brushless electric motor

Country Status (1)

Country Link
JP (1) JPS5927197B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61254095A (en) * 1985-04-30 1986-11-11 Matsushita Electric Ind Co Ltd Drive device for brushless motor
USRE36860E (en) * 1981-12-23 2000-09-12 Papst Licensing Gmbh & Co. Kg Brushless direct current motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36860E (en) * 1981-12-23 2000-09-12 Papst Licensing Gmbh & Co. Kg Brushless direct current motor
JPS61254095A (en) * 1985-04-30 1986-11-11 Matsushita Electric Ind Co Ltd Drive device for brushless motor

Also Published As

Publication number Publication date
JPS5927197B2 (en) 1984-07-04

Similar Documents

Publication Publication Date Title
EP0267283B1 (en) Brushless dc motor
JPS5484207A (en) Pulse motor
KR870008426A (en) 2-phase brushless motor
JPS5467620A (en) Brushless motor
KR840001387B1 (en) Motor
JPS54125418A (en) Dc motor
JPS5771258A (en) Permanent magnet rotary type brushless motor
GB1529834A (en) Brushless direct current motors
JPS5566262A (en) Motor
JPS51127404A (en) Rotor for synchronous motor
JPS5248008A (en) Motor
JPS54109113A (en) Starting system of non-commutator motor
JPS5374215A (en) Angle switching device of synchronous motor
SU748678A1 (en) Single-phase single-layer pole-switching winding
JPS5546863A (en) Commutatorless motor
JPS5439806A (en) Armature winding of revolving electrical machinery
JPS5518879A (en) Motor driving circuit
JPS51141309A (en) Speed controller for dc motor
JPS52104707A (en) Synchronous motor
JPS57162960A (en) Dc brushless motor
JPS5635671A (en) Brushless motor
JPS5298922A (en) Controlling device of dc motor
JPS6220790B2 (en)
JPS5379212A (en) Starting for three phases induction motors
JPS5415112A (en) Multi-phase ac motor