Active horizontal vibration reducing device for elevator

Details Active horizontal vibration reducing device for elevator Active horizontal vibration reducing device for elevator

2006-03-07

2006-03-07

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

C187S391000

Reexamination Certificate

active

07007774

ABSTRACT:
An elevator vibration reducing device in which horizontal vibrations of a cage are detected by a vibration sensor. The cage is displaced horizontally by an actuator. A control portion for controlling the actuator has a computing portion for computing a vibration reduction control signal for reducing the horizontal vibrations of the cage based on a vibration detection signal generated by the vibration sensor. The control portion has a detection signal comparing portion for comparing a detection value obtained from the vibration detection signal with a previously set value, and stopping controlling of the actuator when the detection value becomes no less than the set value.

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