Abstract: An elevator traffic control technique includes destination grouping that is selectively implemented during selected traffic condition. One example includes determining when up peak traffic conditions exist. If so, the passenger-to-car assignments are grouped based upon the passengers' desired destinations, which are determined before the passengers enter elevator cars, Arranging sectors responsive to current traffic conditions in one example is based upon elevator passenger traffic patterns over the most recent five minutes.

Abstract: An elevator system includes a controller that uses one of a plurality of fuzzy logic algorithms for assigning an elevator car to service a passenger request. One example uses a passenger's desired destination as indicated by the passenger service request prior to the passenger entering an elevator car. One example includes multiple fuzzy logic algorithms, each corresponding to a particular relationship between an elevator car's current assignments, a passenger's desired destination, a source landing of the passenger's request, or a combination of them.

Abstract: A elevator traffic control technique includes destination grouping that is selectively implemented during selective traffic conditions by a system controller (36). If, for example, an up-peak traffic condition exists, passenger-to-car (30,20) assignments are grouped bused on passengers' desired destinations.

Abstract: An elevator system (20) includes a controller (36) that uses one of a plurality of fuzzy logic algorithms for assigning an elevator car (22-28) to service a passenger request. A disclosed example uses a passenger's desired destination as indicated by the passenger service request prior to the passenger entering an elevator car. A disclosed example includes multiple fuzzy logic algorithms, each corresponding to a particular relationship between an elevator car's current assignments, a passenger's desired destination, a source landing of the passenger's request, or a combination of them.

Abstract: Deeming a full elevator car available for servicing a hall call is accomplished by testing if all of the car calls for the car are between the position of the elevator car and the hall call. If not, the full car may still be deemed available if there is a special stop car call between the position of the car and the position of the hall call or if there is at least one car call between the position of the car and the position of the hall call and there are no other hall calls between the position of the car and the position of the hall call.

Abstract: Assignment of a hall call to an elevator car occurs only if servicing the hall call will not have an adverse effect on the response times of other registered calls for the car. Assignment of a hall call is made to the car having the lowest number of registered calls which cross a predetermined response time threshold in response to servicing the call.