AC Elevator control system

Details AC Elevator control system AC Elevator control system

1980-05-06

1982-03-16

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 128

Patent

active

043196659

ABSTRACT:
A control system for an AC elevator system in which an actual speed of an elevator car is compared with a speed command and control is made so that deviation between the actual speed and the commanded speed becomes zero. The speed command is so composed that deceleration of the elevator car is gradually decreased as the car approaches to a target landing position in the stopping operation of the elevator. A motoring torque or a braking torque is additionally generated in dependence on a load on the car in a region close to the target landing position.

REFERENCES:
patent: 3918552 (1975-11-01), Kameyama et al.
patent: 4150734 (1979-04-01), Ohira et al.
patent: 4213517 (1980-07-01), Ando

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