MOTOR DRIVE CONTROL APPARATUS, ELECTRICALLY DRIVEN ASSIST APPARATUS, AND RESPONSIVENESS FEEDBACK CONTROL METHOD

WIPO Patent Application WO/2008/069205

A1

A motor drive control apparatus, an electrically driven assist apparatus and a responsiveness feedback control method wherein even if a target rotational speed oscillates during a low speed operation, the occurrence of hunting of the rotational speed of a motor can be suppressed, while the reduction of speed responsiveness being suppressed. A rotational speed determining part (92) determines the rotational speed of a motor (40). A target rotational speed acquiring part (90) acquires a target rotational speed of the motor (40). A gain coefficient deriving part (94) derives a gain coefficient with which the adjustment amount of the rotational speed of the motor (40) is amplified within such a range that there will occur no overshoot that the rotational speed of the motor (40) exceeds the target rotational speed. At this moment, the gain coefficient is derived in such a manner that the higher the determined rotational speed is, the larger value the derived gain coefficient exhibits. A PID control part (96) performs a feedback control of the rotational speed of the motor (40) based on both the deviation of the determined rotational speed from the acquired target rotational speed and the derived gain coefficient.

WAKABAYASHI MITSUYUKI (JP)
OCHIAI HIROSHI (JP)

PCT/JP2007/073402

June 12, 2008

December 04, 2007

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NIFCO INC (JP)
WAKABAYASHI MITSUYUKI (JP)
OCHIAI HIROSHI (JP)

H02P29/00; A47B51/00; A47B77/04; H02P25/098; H02P29/10

JPH11235069A	1999-08-27
JPH1189642A	1999-04-06
JPH05113826A	1993-05-07

NAKAJIMA, Jun et al. (NAKAJIMA & KATO Seventh FloorHK-Shinjuku Bldg.,3-17, Shinjuku 4-chome, Shinjuku-ku Tokyo 22, JP)

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