JPS57177265A - Dc motor with small torque ripple - Google Patents

Dc motor with small torque ripple

Info

Publication number
JPS57177265A
JPS57177265A JP6067881A JP6067881A JPS57177265A JP S57177265 A JPS57177265 A JP S57177265A JP 6067881 A JP6067881 A JP 6067881A JP 6067881 A JP6067881 A JP 6067881A JP S57177265 A JPS57177265 A JP S57177265A
Authority
JP
Japan
Prior art keywords
magnet
motor
poles
armature current
torque ripple
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
JP6067881A
Other languages
Japanese (ja)
Inventor
Itsuki Ban
Hideo Okada
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.)
Sekoh Giken KK
Secoh Giken Co Ltd
Original Assignee
Sekoh Giken KK
Secoh Giken 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 Sekoh Giken KK, Secoh Giken Co Ltd filed Critical Sekoh Giken KK
Priority to JP6067881A priority Critical patent/JPS57177265A/en
Publication of JPS57177265A publication Critical patent/JPS57177265A/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 suppress the irregularity of the torque of a DC motor by flowing an armature current proportional to the magnetic flux density of the pole of field magnet. CONSTITUTION:A DC motor consists of a rotor which is composed of a field magnet 4 magnetized in multiple poles alternately at N-poles and S-poles, a stator which is composed of armature coils L-1-L-3, position detectors a-c, a'-c' which detect the rotary position of the magnet 4, and an armature current control circuit. The detectors a-c, a'-c' are disposed under the filed of the magnet 4, and the armature current is controlled by an output voltage signal proportional to the magnetic flux density of each pole of the magnet 4.
JP6067881A 1981-04-23 1981-04-23 Dc motor with small torque ripple Pending JPS57177265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6067881A JPS57177265A (en) 1981-04-23 1981-04-23 Dc motor with small torque ripple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6067881A JPS57177265A (en) 1981-04-23 1981-04-23 Dc motor with small torque ripple

Publications (1)

Publication Number Publication Date
JPS57177265A true JPS57177265A (en) 1982-10-30

Family

ID=13149211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6067881A Pending JPS57177265A (en) 1981-04-23 1981-04-23 Dc motor with small torque ripple

Country Status (1)

Country Link
JP (1) JPS57177265A (en)

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