Speed instruction generating device for elevator

Details Speed instruction generating device for elevator Speed instruction generating device for elevator

1981-06-10

1982-10-19

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 130

Patent

active

043545777

ABSTRACT:
A method for controlling the movement of an elevator cage in which a difference between first and second speed instruction values is made constant irrespective of speed so that no shock force is applied to the cage at a time of switching between speed instruction values. A predetermined distance is added to a remaining distance of the age to a target floor. A modified second speed instruction value corresponding to the resultant distance is compared with the first speed instruction value, and when this difference becomes smaller than a predetermined value, a switching preparation instruction is issued. The elevator is operated at a speed determined by the first speed instruction value until a predetermined period of time after the switching preparation instruction after which the elevator is operated in accordance with the second speed instruction value.

REFERENCES:
patent: 3777854 (1973-12-01), Ozawa
patent: 4050547 (1977-09-01), Kataoka et al.
patent: 4150734 (1979-04-01), Ohira et al.
patent: 4155426 (1979-05-01), Booker, Jr.

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