Title:
METAL BEARING TYPE MOTOR
Document Type and Number:
Japanese Patent JPH05328689
Kind Code:
A
Abstract:
PURPOSE: To reduce torque ripples of a metal bearing type motor by a simple structure.
CONSTITUTION: A periodic variation in rotation of a rotor magnet 5 due to an inclination of a rotor shaft 7 is so controlled as to be cancelled under the of periodic control rotational speed of the magnet 5 by an auxiliary magnetic path M2 utilizing a leakage magnetic flux provided on an outer periphery of the magnet 5.
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Inventors:
NAKANE TOSHIHIDE
KAJIURA MINORU
MORINISHI YUSUKE
HIGUCHI MASARU
KAJIURA MINORU
MORINISHI YUSUKE
HIGUCHI MASARU
Application Number:
JP15619092A
Publication Date:
December 10, 1993
Filing Date:
May 25, 1992
Export Citation:
Assignee:
SONY CORP
International Classes:
H02K21/24; H02P7/10; (IPC1-7): H02K21/24; H02P7/10
Attorney, Agent or Firm:
Akio Waki