Control apparatus for elevator

Details Control apparatus for elevator Control apparatus for elevator

1984-07-03

1985-06-04

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

318765, B66B 132

Patent

active

045209065

ABSTRACT:
A control apparatus for an elevator comprising loss impartation means to impart a loss to a hoisting machine for a cage; cage position detection means to detect the position of the cage; and control means to control the loss impartation means on the basis of an output signal of the cage position detection means so as to adjust the loss in accordance with the position of the cage; wherein by adjusting and controlling the loss, the resonance of a mechanical system composed of the cage, a balance weight, a hoisting rope, etc., is suppressed to improve riding conditions in the elevator car.

REFERENCES:
patent: 2846631 (1958-08-01), Vogt
patent: 3345548 (1967-10-01), Grepe
patent: 3802274 (1974-01-01), Berkovitz
patent: 4027745 (1977-06-01), Watanabe
patent: 4030570 (1977-06-01), Caputo
patent: 4269286 (1981-05-01), Ishii et al.
patent: 4271931 (1981-06-01), Watanabe

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