Speed control apparatus for elevator system

Details Speed control apparatus for elevator system Speed control apparatus for elevator system

1979-02-26

1981-05-26

Witkowski, Stanley J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 502

Patent

active

042692865

ABSTRACT:
A speed control apparatus for elevator system which controls a speed of a cage through a main rope under controlling a motor by a speed control system comprising an acceleration feedback circuit, comprises a detection circuit for detecting a speed or a position of the cage which is vibrated under corresponding a frequency of an outer disturbance to a resonance frequency of the main rope and a command circuit for increasing a gain of the acceleration feedback circuit by the output of the detection circuit.

REFERENCES:
patent: 3749204 (1973-07-01), Caputo
patent: 4027745 (1977-06-01), Watanabe
patent: 4030570 (1977-06-01), Caputo

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