Electric motor control apparatus

Electricity: motive power systems – Positional servo systems – 'reset' systems

Reexamination Certificate

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Details

C318S611000, C318S629000

Reexamination Certificate

active

07868577

ABSTRACT:
In order to simultaneously realize an improvement in disturbance suppression force of an electric motor control apparatus and vibration suppression of a load machine, a velocity control circuit receives a velocity command signal as a target value of velocity of an electric motor and a corrected velocity signal, obtained by correcting a velocity signal with a velocity correction signal, and outputs a torque command signal specifying target torque of the electric motor driving the load machine. A vibration suppression circuit outputs a velocity correction signal, based on an acceleration signal, indicating acceleration of the load machine. A transfer function from the acceleration signal to the torque command signal is obtained by multiplying a transfer function from a position signal, indicating position of the electric motor to the torque command signal, by a proportion characteristic having a specified gain and integration characteristic.

REFERENCES:
patent: 5204602 (1993-04-01), Iwashita
patent: 5272423 (1993-12-01), Kim
patent: 7030585 (2006-04-01), Iwashita et al.
patent: 2003/0102427 (2003-06-01), Tohyama et al.
patent: 62-84309 (1987-04-01), None
patent: 1-136582 (1989-05-01), None
patent: 2-82303 (1990-03-01), None
patent: 5-303427 (1993-11-01), None
patent: 6-91482 (1994-04-01), None
patent: 7-281758 (1995-10-01), None
patent: 2002-21544 (2002-07-01), None

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