Title:
BRUSHLESS DC FAN MOTOR
Document Type and Number:
WIPO Patent Application WO/2004/030200
Kind Code:
A1
Abstract:
A brushless DC fan motor capable of communicating with an external apparatus while simplifying the circuitry. A speed control command generating means (9) generating a command for controlling the rotational speed of the rotor comprises a microcomputer (9a) capable of bi-directional communication with an external apparatus (1) by serial communication based on a predetermined communication protocol. The microcomputer (9a) operates the speed control command based on control conditions transmitted from the external apparatus (1) and a signal indicative of the rotational speed and/or the exciting current detected by a speed detector (13) and/or a current detector (15) incorporated in the brushless DC fan motor (1). A drive circuit (7) controls the exciting current by PWM control according to an optimal speed control command.
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Inventors:
MURATA MASATO (JP)
KUDOU NARUHIKO (JP)
TAKAKUWA MUNENORI (JP)
KUDOU NARUHIKO (JP)
TAKAKUWA MUNENORI (JP)
Application Number:
PCT/JP2003/012531
Publication Date:
April 08, 2004
Filing Date:
September 30, 2003
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
MURATA MASATO (JP)
KUDOU NARUHIKO (JP)
TAKAKUWA MUNENORI (JP)
MURATA MASATO (JP)
KUDOU NARUHIKO (JP)
TAKAKUWA MUNENORI (JP)
International Classes:
F04D27/02; F04D27/00; H02P6/06; H02P6/08; H02P6/17; H02P7/08; (IPC1-7): H02P6/06
Foreign References:
| JP2002058280A | 2002-02-22 | |||
| JP2002044982A | 2002-02-08 | |||
| JPH05118629A | 1993-05-14 | |||
| JPH0454892A | 1992-02-21 |
Attorney, Agent or Firm:
Nishiura, Tsuguharu (Toranomon 34 MT Building 9F 25-5, Toranomon 1-chom, Minato-ku Tokyo, JP)
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