Method and apparatus for controlling elevator cars in a common s

Details Method and apparatus for controlling elevator cars in a common s Method and apparatus for controlling elevator cars in a common s

1999-02-01

2000-12-19

Salata, Jonathan

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

187902, B66B 140

Patent

active

061616524

ABSTRACT:
A method and an apparatus for controlling an elevator is equipped with a deck-distance drive machine which by reference to positional information adjusts the distances between the individual cars in a common car sling in such a way that each car can stop at the corresponding floor accurately, i.e. without forming a step. Measured values of floor position are stored in memories and periodically updated so as to detect any changes such as, for example, building settlement. Based on this data the necessary deck-distances are calculated which are necessary for all the cars to stop without any of them forming a step. Furthermore, the method and the device can be correspondingly extended for a multi-decker elevator and for any type of control (conventional control, destination call control, etc.).

REFERENCES:
patent: 1914128 (1933-06-01), James et al.
patent: 1946982 (1934-02-01), McPeak
patent: 4434466 (1984-02-01), Friedli et al.
patent: 4484264 (1984-11-01), Friedli et al.
patent: 5220981 (1993-06-01), Kahkipuro et al.
patent: 5907136 (1999-05-01), Hongo et al.

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