Elevator floor arrival correction control

Details Elevator floor arrival correction control Elevator floor arrival correction control

1997-11-03

1999-02-09

Nappi, Robert E.

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

107393, 107284, B66B 140

Patent

active

058697950

ABSTRACT:
An elevator is provided with floor arrival correction control which monitors the elapsed time following completion of the previous floor arrival correction. If the time elapsed is less than a fixed time (102), the elevator car is controlled with a standard floor arrival control speed pattern (103, 52), if it is greater than the fixed time, the next floor arrival-corrected operation is compared with the direction of operation for the previous correction (104). If the same, the car has not yet arrived in the door zone (e.g., because the car is heavily loaded) and the car is controlled with an increased speed pattern (105, 51). If not the same, the car has overrun the door zone and it is controlled with a reduced speed pattern (106, 53).

REFERENCES:
patent: 4337846 (1982-07-01), Yonemoto et al.
patent: 4470482 (1984-09-01), Husson
patent: 4976338 (1990-12-01), Holland

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