Genetic procedure for allocating landing calls in an elevator gr

Details Genetic procedure for allocating landing calls in an elevator gr Genetic procedure for allocating landing calls in an elevator gr

1998-08-14

1999-05-25

Nappi, Robert E.

Elevator, industrial lift truck, or stationary lift for vehicle

With call registration means

Shared by plural load supports

187380, 187910, 187 13, B66B 118

Patent

active

059071370

ABSTRACT:
Genetic procedure for the allocation of calls for elevators comprised in an elevator group. In the procedure, a plurality of allocation options, i.e. chromosomes (33) are formed, each of which contains a call data item and an elevator data item for each landing call, and these data, i.e. genes together define an elevator to serve the landing call. A fitness function value (34) is determined for each chromosome (33) and one or more of the chromosomes (33) are modified and, based on the fitness function values, the best chromosome (33) is selected and the elevator group is controlled in accordance with this chromosome. According to the invention, the chromosomes (33) and the corresponding fitness function values (34) are collected in a file, i.e. a gene bank, and each chromosome (33) generated is compared with the chromosomes (33) in the gene bank, and a fitness function value (34) is only determined for a new chromosome (33).

REFERENCES:
patent: 5780789 (1998-07-01), Tsuji
patent: 5848403 (1998-12-01), Gabriner et al.
Lawrence Davis, Handbook of Genetic Algorithms, pp. 1-560, 90-99, 333-349, 1991.

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