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Patent Searching and Data


Title:
MOTOR AND DRIVE CONTROL SYSTEM THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/088827
Kind Code:
A1
Abstract:
There is provided a motor including magnetic pole means having a plurality of coil strings alternately excited to different poles to which is faced a permanent magnetic pole string having permanent magnetic pole elements of alternately different poles. The motor is configured so that the permanent magnetic pole string is moved. The motor further includes drive circuit means for supplying an excitation signal to the coil string and a sensor for detecting the position of the permanent magnet string. The output of the sensor is fed back as a drive waveform directly to the drive circuit means. According to the feed back signal, the drive circuit forms the excitation signal.

Inventors:
Takeuchi, Kesatoshi c/o Seiko Epson Corporation (3-5 Owa 3-chome, Suwa-sh, Nagano 02, 39285, JP)
Application Number:
PCT/JP2005/004897
Publication Date:
September 22, 2005
Filing Date:
March 14, 2005
Export Citation:
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Assignee:
Seiko Epson Corporation (4-1 Nishishinjuku 2-chome, Shinjuku-ku Tokyo, 11, 16308, JP)
International Classes:
H02K29/08; H02K3/00; H02K21/00; H02K41/03; H02P3/18; H02P6/06; H02P6/08; H02P6/24; H02P7/00; H02P25/06; H02P25/064; (IPC1-7): H02P6/24; H02K29/08; H02K41/03; H02P7/00
Foreign References:
JPS5195212A1976-08-20
JPH10290558A1998-10-27
JPS56120785U1981-09-14
JPH07336967A1995-12-22
JP2004064845A2004-02-26
JP2003289690A2003-10-10
Attorney, Agent or Firm:
Inaba, Yoshiyuki (TMI ASSOCIATES, 23rd Floor Roppongi Hills Mori Tower, 6-10-1, Roppongi, Minato-k, Tokyo 23, 10661, JP)
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