Elevator – industrial lift truck – or stationary lift for vehicle – With call registration means – Shared by plural load supports
Patent
1995-11-30
1998-06-16
Nappi, Robert
Elevator, industrial lift truck, or stationary lift for vehicle
With call registration means
Shared by plural load supports
395910, 187380, 187385, B66B 118, B66B 116
Patent
active
057674604
ABSTRACT:
A group controller for controlling elevator cars in a building having a plurality of floors includes an elevator dispatcher for controlling the operation of the elevator cars during single source traffic conditions, the elevator dispatcher having a constraint for limiting car assignments in response to the constraint; and an adaptive contraint generator for modifying a value of the constraint in response to an elevator control system output variable. In one embodiment, the group controller includes a traffic and traffic rate estimator for providing fuzzy estimates of traffic and traffic rate; a fuzzy logic controller for providing a control parameter in response to the fuzzy estimates of traffic and traffic rate, the control parameter having a constraint for limiting a value of the control parameter; an adaptive constraint generator for modifying a value of the constraint in response to an elevator control system output variable; and an elevator dispatcher for controlling the operation of the elevator cars during single source traffic conditions in response to the control parameter.
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Nappi Robert
Otis Elevator Company
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