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Patent Searching and Data


Title:
MOTOR DRIVING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2006/068116
Kind Code:
A1
Abstract:
A motor driving apparatus by which a motor start time is shortened. In the motor driving apparatus (100), a control section (110) detects a number of rotations of a motor to be driven, and a control voltage (Vcnt) is generated to have the number of rotations close to a desired number. A clamp circuit (20) limits an upper limit value (Vcu) and a lower limit value (Vcl) of the control voltage (Vcnt). A driving section (120) drives a motor (200) based on the control voltage (Vcnt) generated by the control section (110). A start circuit (40) fixes the control voltage (Vcnt) at a prescribed initial voltage (Vinit) when the motor (200) starts to be driven.

Inventors:
Sugie, Hisashi c/o Rohm Co. Ltd. (21, Saiin Mizosaki-Cho, Ukyo-ku, Kyoto-sh, Kyoto 85, 61585, JP)
Application Number:
PCT/JP2005/023322
Publication Date:
June 29, 2006
Filing Date:
December 20, 2005
Export Citation:
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Assignee:
ROHM CO., LTD (21 Saiin Mizosaki-Cho, Ukyo-ku Kyoto-sh, Kyoto 85, 61585, JP)
Sugie, Hisashi c/o Rohm Co. Ltd. (21, Saiin Mizosaki-Cho, Ukyo-ku, Kyoto-sh, Kyoto 85, 61585, JP)
International Classes:
H02P1/18; H02P7/06; H02P7/29
Foreign References:
JPS5833982A1983-02-28
JP3282218B22002-05-13
JPH087402A1996-01-12
JPH0630589A1994-02-04
JPS55100490U1980-07-12
Attorney, Agent or Firm:
Morishita, Sakaki (2-11-12 Ebisu-Nishi, Shibuya-ku, Tokyo 21, 15000, JP)
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