JPS56162961A - Brushless dc motor - Google Patents

Brushless dc motor

Info

Publication number
JPS56162961A
JPS56162961A JP6303280A JP6303280A JPS56162961A JP S56162961 A JPS56162961 A JP S56162961A JP 6303280 A JP6303280 A JP 6303280A JP 6303280 A JP6303280 A JP 6303280A JP S56162961 A JPS56162961 A JP S56162961A
Authority
JP
Japan
Prior art keywords
theta
rotor
magnetization
sin
proportional
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
JP6303280A
Other languages
Japanese (ja)
Inventor
Hiroyuki Yamauchi
Hideharu Yamamoto
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 JP6303280A priority Critical patent/JPS56162961A/en
Publication of JPS56162961A publication Critical patent/JPS56162961A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors

Abstract

PURPOSE:To obtain definite torque with the brushless DC motor irrelevant to the rotating angular position of the rotor thereof by a method wherein field magnets being formed to generate magnetic flux thereof proportional to sin<2>theta (theta is rotating angle of the rotor) after magnetization, and two phases driving coils being arranged at the positions different by an odd number times of 90 deg. electric angles with each other, are provided. CONSTITUTION:A permanent magnet magnetized as to have plural poles is used for the rotor magnet 2, and magnetic field thereof after magnetization is made as to form a wave form being proportional to sin<2>theta. While the first driving coil consisting of winding blocks C1 and C2 connected in series and the second driving coil consisting of winding blocks C3 and C4 connected in series are arranged at the positions different by the odd number times of 90 deg. electric angles with each other. The direction of the current to be made to flow in the first and the second driving coils are changed over in accordance with outputs of Hall elements 11, 12 detecting magnetic field of the rotor magnet 2.
JP6303280A 1980-05-13 1980-05-13 Brushless dc motor Pending JPS56162961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6303280A JPS56162961A (en) 1980-05-13 1980-05-13 Brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6303280A JPS56162961A (en) 1980-05-13 1980-05-13 Brushless dc motor

Publications (1)

Publication Number Publication Date
JPS56162961A true JPS56162961A (en) 1981-12-15

Family

ID=13217572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6303280A Pending JPS56162961A (en) 1980-05-13 1980-05-13 Brushless dc motor

Country Status (1)

Country Link
JP (1) JPS56162961A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10234148A (en) * 1997-02-20 1998-09-02 Toshiba Corp Permanent magnet type motor
JPH10336987A (en) * 1997-05-30 1998-12-18 Sanyo Electric Co Ltd Facing plane brushless motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10234148A (en) * 1997-02-20 1998-09-02 Toshiba Corp Permanent magnet type motor
JPH10336987A (en) * 1997-05-30 1998-12-18 Sanyo Electric Co Ltd Facing plane brushless motor

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