Abstract:
A group controller for controlling elevator cars in a building having a plurality of floors includes a traffic and traffic rate estimator for providing fuzzy estimates of traffic and traffic rate; a closed loop fuzzy logic controller for providing a control parameter in response to the fuzzy estimates of traffic and traffic rate and 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.
Abstract:
An elevator system including a group controller for controlling the dispatching of elevator cars to the lobby. The group controller predicts lobby single source traffic for short periods. When the predicted traffic is below a certain limit, cars are assigned to a lobby hall call on demand after hall call registration. When the predicted traffic is above a certain limit, cars are assigned to the lobby hall call at intervals. Accordingly, car assignment is scheduled at those intervals. The traffic threshold at which the scheduled mode is activated and the traffic threshold at which it is deactivated is learned by the system. The schedule interval is varied based on predicted traffic and predicted round trip time of the cars. The number of cars assigned and sent to the lobby is varied based on predicted traffic. In order to avoid oscillations in selecting the service mode, proper delays are used to activate and deactivate the scheduled service.
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 contraint for limiting car assignments in response to the contraint; and an adaptive contraint generator for modifying a value of the contraint 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 contraint for limiting a value of the control parameter; and adaptive contraint generator for modifying a value of the contraint 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.
Abstract:
A group controller for controlling elevator cars in a building having a plurality of floors includes a traffic and traffic rate estimator for providing fuzzy estimates of traffic and traffic rate; a closed loop fuzzy logic controller for providing a control parameter in response to the fuzzy estimates of traffic and traffic rate and in response to an elevator control system output variable, the closed loop fuzzy logic controller having membership functions for fuzzy sets of the control parameter; an adaptive controller for modifying the membership functions of the fuzzy sets of the control parameter in response to the 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.
Abstract:
PROBLEM TO BE SOLVED: To stably maintain intervals (time intervals) between respective elevator cars in an equal state in the long term. SOLUTION: With respect to each elevator, this elevator group supervisory operation system is provided with a target route generation means 101 for generating a target route targeted by each elevator and shown on a time axis and positional axis, and with an allocation means 2 for selecting an elevator allocated to generated hall calling such that an actual locus of each elevator shown on the time axis and positional axis follows each target route. Thereby, the target route leading to a state to be targeted in the future is prepared, and car allocation is performed to follow the target route. As a result, time equal interval control of each car can be stably achieved in the long term. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
The invention is based on elevator control of an elevator installation (10; 10') with at least two elevator cars (20, 22, 24, 26, 28, 30, 32, 34, 36; 26', 28', 30'), which are provided for being moved independently of one another in a common elevator well (14, 16, 18; 16'), and with a control device (12; 12'). The invention proposes that the control device (12; 12') is provided for the purpose of fixing a first common direction of travel (38, 40, 42; 40') of the at least two elevator cars (20, 22, 24, 26, 28, 30, 32, 34, 36; 26', 28', 30') in the common elevator well (14, 16, 18; 16') and of reversing this first direction of travel (38, 40, 42; 40') for the at least two elevator cars (20, 22, 24, 26, 28, 30, 32, 34, 36; 26', 28', 30') on the basis of at least one internal destination storey selection (46, 48, 50) and/or an external conveying request (44) and/or a destination call (58) only when all of the internal destination storey selections (46, 48, 50) and/or all of the external conveying requests (44) and/or all of the destination calls (58) of the elevator cars (20, 22, 24, 26, 28, 30, 32, 34, 36; 26', 28', 30') in the first direction of travel (38, 40, 42; 40') have been processed.
Abstract:
A method and a display for elevator allocation evaluating are provided. When an elevator allocated to a hall call is selected by employing two different view points such as a real and a future call evaluation index, an elevator allocation reason and a balance between the two view points can be easily grasped. An elevator allocated to a hall call is evaluated on orthogonal coordinates in which the real call evaluation index (ΦR (k)) and the future call evaluation index (ΦF (k)) are defined as an X and a Y coordinate axis. Evaluation indexes (21 to 24) of first to fourth elevator cars are evaluated by employing contour lines (25a to 25g) of a synthetic evaluation function (ΦV (k)), which is represented as the real and the future call evaluation index. A weight for allocating is displayed visually.