Title:
SENSORLESS CONTROL DEVICE FOR SYNCHRONOUS ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2003/019314
Kind Code:
A1
Abstract:
A synchronous electric motor sensorless control device for driving a synchronous electric motor without using any rotational position measuring device. The sensorless control device comprises a relative position counter (4) for resetting an accumulated value to zero when a reference position signal serving as a reference for a positioning count is inputted and fetching a magnetic pole position estimate as a reference position from the position&sol speed estimator to start the accumulation, and a speed command generator (3) having a position controller (29) for controlling the position by the difference between the command value of the displacement from the reference position and the accumulated value outputted as a relative position from the relative position counter, and adapted for outputting a speed command. Thus, the sensorless control device can place the synchronous electric motor having no position sensor in a predetermined position.
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Inventors:
KAITANI TOSHIYUKI (JP)
Application Number:
PCT/JP2001/007308
Publication Date:
March 06, 2003
Filing Date:
August 27, 2001
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
KAITANI TOSHIYUKI (JP)
KAITANI TOSHIYUKI (JP)
International Classes:
G05B11/18; G05D3/12; G05D16/00; H02P3/06; H02P6/06; H02P6/08; H02P6/16; H02P6/17; H02P6/18; H02P6/182; H02P6/28; H02P21/18; H02P21/22; H02P21/24; H02P21/36; H02P23/12; H02P23/16; H02P23/18; (IPC1-7): G05D3/12
Foreign References:
| JP2001042948A | 2001-02-16 | |||
| JPH0675638A | 1994-03-18 | |||
| JPH0637907U | 1994-05-20 | |||
| JPS5884312A | 1983-05-20 | |||
| JPH05324083A | 1993-12-07 | |||
| JPH10143248A | 1998-05-29 |
Other References:
Yang Geng et al., "Tekiou Observer ni yoru Brushless DC Motor ni Ichi Sensorless Seigyo", Denki-gakkai Ronbunshi, May 1993, Vol. 113, No. 5, pages 579 to 586
Takaharu TAKESHITA et al., "Zen-sokudo Ryouiki ni okeru Sensorless Tokkyokukei PM Douki Dendoki Seigyo", Denki Gakkai Ronbunshi, February 2000, Vol. 120, No. 2, pages 240 to 247
Takaharu TAKESHITA et al., "Zen-sokudo Ryouiki ni okeru Sensorless Tokkyokukei PM Douki Dendoki Seigyo", Denki Gakkai Ronbunshi, February 2000, Vol. 120, No. 2, pages 240 to 247
Attorney, Agent or Firm:
Miyata, Kaneo c/o Mitsubishi Denki Kabushiki Kaisha 2-3 (Marunouchi 2-Chome Chiyoda-ku, Tokyo, JP)
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