| 摘要 |
PROBLEM TO BE SOLVED: To provide an elevator door control device for controlling the speed of an elevator door device with high precision without using a speed detector. SOLUTION: The elevator door control device comprises a motor for driving the elevator door device, a power converter for controlling armature voltage applied to an armature of the motor, a voltage detector for detecting the armature voltage of the motor, a current detector for detecting a current in the armature of the motor, and a controller for controlling the output of the power converter. The controller controls the speed feedback of the elevator door device in accordance with the rotating speed of the motor calculated based on detection values read out of the voltage detector and the current detector.
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