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Patent Searching and Data


Title:
APPARATUS AND METHOD FOR CONTROLLING DRIVE OF DOOR
Document Type and Number:
Japanese Patent JP2008271705
Kind Code:
A
Abstract:

To provide a method for controlling door drive, capable of accurately detecting a reversal runaway state without fail, and improving safety more than a conventional method.

This apparatus for controlling door drive includes a power converter 14 which supplies power to a linear motor 2 for driving the door 1, and drives the power converter 14 by feed-back control based on a speed detection value and speed command value of the door 1 to control the speed of the door 1. This apparatus also includes a door speed abnormality determination device 15 which outputs a door reserve direction speed abnormality signal "a" when the speed command value of the door 1 exceeds the positive or negative first set speed and when the speed detection value exceeds the second set speed of polarity opposite to that of the speed command value.


Inventors:
Nagakura, Takayuki
Sato, Yoshinobu
Fujimori, Akira
Takeda, Naoki
Application Number:
JP2007000111488
Publication Date:
November 06, 2008
Filing Date:
April 20, 2007
Export Citation:
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Assignee:
FUJI ELECTRIC SYSTEMS CO LTD
International Classes:
H02P25/06; E05F15/18; H02P6/12; H02P6/16; H02P25/02; E05F15/00; H02P6/12; H02P6/14