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Title:
MAGNETIC LEVITATION TYPE MOTOR
Document Type and Number:
Japanese Patent JP2002247823
Kind Code:
A
Abstract:

To eliminate requirement for high speed operation of a drive amplifier of simplified structure without any influence on either the magnetic levitation force control or rotating torque control by the other control, and moreover by reducing the drive frequency.

The number of poles of a rotor magnet 11 is set to four at an interval of 90 degrees in the rotating direction. Coils 21, 22 for rotation and levitation have 12 induction conductor coils 22a1 to 12, 22a1 to 12 which are wound in the centralized winding manner keeping the interval of 30 degrees in the rotating direction. These 12 induction conductor coils 22a1 to 12, 22a1 to 12 are wired by forming a pair with two effective conductor coils having the interval of 90 degrees to provide paired six sets. A current for rotation and a current for levitation for the rotation/levitation control of the rotor are applied to the six sets of the coils 21, 22 for rotation and levitation.


Inventors:
KANEBAKO HIDEKI
OKADA YOJI
ABE KEISUKE
Application Number:
JP2001038920A
Publication Date:
August 30, 2002
Filing Date:
February 15, 2001
Export Citation:
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Assignee:
SANKYO SEIKI SEISAKUSHO KK
OKADA YOJI
CHIBA SEIMITSU KK
International Classes:
F16C32/04; F16C39/06; H02K3/04; H02K3/28; H02K7/09; H02K21/14; H02K21/24; H02K29/00; (IPC1-7): H02K21/24; F16C32/04; H02K3/04; H02K3/28; H02K21/14; H02K29/00
Domestic Patent References:
JPH1080113A1998-03-24
JPH0332338A1991-02-12
JPH10201170A1998-07-31
JPS55157948A1980-12-09
JP2000511399A2000-08-29
Attorney, Agent or Firm:
Takahide Goto



 
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