Control apparatus for controlling motor drive

Details Control apparatus for controlling motor drive Control apparatus for controlling motor drive

2005-02-22

2005-02-22

Nguyen, Hung (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S543000, C340S686100, C340S686300, C340S672000, C340S870030

Reexamination Certificate

active

06859139

ABSTRACT:
A control apparatus controls a drive of a motor having a movable part via an electric power converter. The control apparatus includes a detecting device for detecting a position of the movable part of the motor; a locking device for locking the movable part of the motor; and a storage device for storing an initial position at which the movable part of the motor is locked for the first time. It is determined that the movable part is locked at an abnormal position when a deviation between the position detected by the detecting device where the movable part of the motor is locked and the initial position stored in the storage means is larger than a predetermined reference distance.

REFERENCES:
patent: 6400278 (2002-06-01), Weyerstall et al.
patent: 6459223 (2002-10-01), Mauel et al.

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