Speed control apparatus for compensating vibration of elevator

Details Speed control apparatus for compensating vibration of elevator Speed control apparatus for compensating vibration of elevator

1996-11-15

1998-10-20

Nappi, Robert

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

318802, 318271, 187393, B66B 134, H02P 100, H02P 534

Patent

active

058249753

ABSTRACT:
A speed control apparatus for operating a cage of an elevator at a speed suitable for a required operation condition is capable of reducing a mechanical vibration generated from the cage by obtaining a torque of the winding machine from a speed-controlled current command and an acceleration of the winding machine from the torque and the present acceleration of the winding machine to compensate for and output the value of the current command when a high speed elevator having a low mechanical resonant frequency is operated.

REFERENCES:
patent: 4684856 (1987-08-01), Kohkipuro
patent: 5184055 (1993-02-01), Ohishi et al.
patent: 5476158 (1995-12-01), Mann et al.
patent: 5542501 (1996-08-01), Ikejima et al.
patent: 5635689 (1997-06-01), Shepard et al.

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