JPS5463308A - Dc brushless motor - Google Patents

Dc brushless motor

Info

Publication number
JPS5463308A
JPS5463308A JP12961677A JP12961677A JPS5463308A JP S5463308 A JPS5463308 A JP S5463308A JP 12961677 A JP12961677 A JP 12961677A JP 12961677 A JP12961677 A JP 12961677A JP S5463308 A JPS5463308 A JP S5463308A
Authority
JP
Japan
Prior art keywords
section
electromagnetic
main
auxiliary
torque
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
JP12961677A
Other languages
Japanese (ja)
Inventor
Saburo Kazama
Norio Goto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12961677A priority Critical patent/JPS5463308A/en
Publication of JPS5463308A publication Critical patent/JPS5463308A/en
Pending legal-status Critical Current

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  • Brushless Motors (AREA)

Abstract

PURPOSE:To simplify construction and reduce size of the motor by adopting single phase driving and also permitting the detectin of position and rpm to be made by a single detecting element. CONSTITUTION:A main electromagnetic section constituted by four-pole rotor magnet 1 and a stator and an auxiliary electromagnet section formed by a four- pole salient pole ferromagentic rotor 8 and a stator such that the electromagnetic gap is non symmetrical in the peripheral direction are provided on the same rotative shaft. The auxiliary electromagnetic sectin is excited with DC current without switching so that forward torque can be provided to the rotative shaft in the direction of rotation even at the time of the switching of the exciting current in the main electromagnetic section. Thus, by suitably setting the magnitude and phase of the torque produced in the auxiliary electromagntic section to appropriate values with respect to the torque produced in the main electromagnetic section it is possible to reduced in the main eletromagnetic section it is possible to reduce the torque variations of the entire system without reducing the electromagnetic conversion efficiency.
JP12961677A 1977-10-31 1977-10-31 Dc brushless motor Pending JPS5463308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12961677A JPS5463308A (en) 1977-10-31 1977-10-31 Dc brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12961677A JPS5463308A (en) 1977-10-31 1977-10-31 Dc brushless motor

Publications (1)

Publication Number Publication Date
JPS5463308A true JPS5463308A (en) 1979-05-22

Family

ID=15013862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12961677A Pending JPS5463308A (en) 1977-10-31 1977-10-31 Dc brushless motor

Country Status (1)

Country Link
JP (1) JPS5463308A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656163A (en) * 1979-10-11 1981-05-18 Mitsubishi Electric Corp Brushless motor
JPH05238681A (en) * 1991-03-28 1993-09-17 Eckhart Dewert Lifting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656163A (en) * 1979-10-11 1981-05-18 Mitsubishi Electric Corp Brushless motor
JPH05238681A (en) * 1991-03-28 1993-09-17 Eckhart Dewert Lifting device

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