Apparatus for controlling elevator door

Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support

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Details

187 31, 187 52R, 187104, 318257, 318282, 318626, B66B 1314

Patent

active

052507653

ABSTRACT:
An apparatus for controlling an elevator door comprises a motor for opening and closing an elevator door, an inverter unit for controlling the driving of the motor, a door position detecting unit for detecting the position of the door, first and second sensors for respectively detecting that the door passes through a terminal reference point on the opening side and a terminal reference point on the closing side, a speed command generating unit for generating a speed command on the basis of a distance between the door position detected by the door position detecting unit to a stop target on the opening side or the closing side when the first and second sensors respectively detect the passage of the door, and a control unit for controlling the inverter unit on the basis of the speed command output from the speed command generating unit.

REFERENCES:
patent: 4305481 (1981-12-01), Hmelovsky et al.
patent: 4776433 (1988-10-01), Lagree et al.
patent: 5131506 (1992-07-01), Mizuno et al.
patent: 5144101 (1992-09-01), Tawada et al.
patent: 5162711 (1992-11-01), Heckler
patent: 5170865 (1992-12-01), Mizuno et al.

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