Abstract:
An elevator system including a car call registration device by which an elevator user registers a car call before riding on a car and a group supervisory controller with a building specification data storage section in which building specification data including specially-assigned floors is stored. Further, a specially-assigned floor judgment section judges whether a departure floor is a specially-assigned floor when a car call is registered, and a traffic condition judgment section judges the traffic condition of elevators within a building. A car assignment is performed based on the traffic condition judgment section judging by the specially-assigned floor judgment section that the departure floor is a specially-assigned floor, and a car assignment is performed based on a building specification stored in the building specification data storage section when the specially-assigned floor judgment section judges the departure floor is not a specially-assigned floor.
Abstract:
Described is a method for assigning hall calls comprising the steps of receiving a hall call signal, receiving information regarding an elevator system, assigning a destination to the hall call signal, and calculating a call cost value for each elevator car using a handing capacity coefficient. The controller designates the elevator with the lowest call cost value to respond to a call signal. The handling capacity coefficient is a value that reflects the current traffic conditions of an elevator system.
Abstract:
An elevator group control system includes a reference route generating portion, which for each elevator, generates a reference route which the elevator should follow with respect to the time axis and position axis; and an assignment portion which selects an elevator for assignment to a generated hall call so as to make the actual trajectory of each elevator closer to its reference route. Reference routes which guide the cage's trajectory into temporally equal interval condition are generated, and car assignment is executed to allow the cages to settle in temporally equal interval condition over a long period of time.
Abstract:
An elevator group control system is provided which stably keeps cage's position in temporally equal interval condition over a long period of time.The present invention provides a system comprising: reference route generating means, which for each elevator, generates a reference route which the elevator should follow with respect to the time axis and position axis; and assignment means which selects an elevator for assignment to a generated hall call so as to make the actual trajectory of each elevator closer to its reference route.Since reference routes which guides the cage's trajectory into temporally equal interval condition are generated and car assignment is executed so as to make the respective cages follow their reference routes, it is possible to allow the cages to settle in temporally equal interval condition over a long period of time.
Abstract:
An elevator group management and control apparatus that manages and controls elevators as one group, detects the traffic demands of the elevators in a building; predicts the traffic demand in the near future on the basis of the detected traffic demand; discriminates the traffic pattern of the near future in accordance with the predicted result of the traffic demand; automatically generates candidates from the group management and control rule groups to be applied in the near future on the basis of the traffic pattern which has been predicted and discriminated; evaluates and selects one candidate of the respective rule groups which have been generated; and controls the elevators using the selected rule group, to implement group management and control, always using an appropriate rule group.
Abstract:
The position and direction (0-27, FIG. 2) of each elevator car (A-D) in a group of cars is recorded along with time and traffic rate of the elevator group to provide a data stream. The canonic representation of the position and direction data is reduced, to eliminate symmetry (FIGS. 1, 3 and 4) resulting from the relative positions and directions of the cars being the same except for the identification of which car is at which position and direction. An entropy estimation algorithm is used to provide a plot of entropy as a function of time, which is then translated from the other data in the stream to entropy as a function of traffic rate (FIG. 5). A maximum traffic rate is chosen, and thereafter, during normal operation, if the current rate is higher than the maximum, an elevator group parameter is altered to increase the traffic-handling capability of the group, but if the current traffic rate is lower than the maximum, an elevator parameter is altered in a manner to decrease the traffic-handling capability of the group.
Abstract:
A method for controlling an elevator group of double-deck elevators. Landing calls are allocated to the elevators and elevator decks in such a way that the passenger journey time is optimized. The method takes into account the current landing call time and the estimated time of arrival to the destination floor. The method minimizes passenger journey time by allocating the landing call to the deck that will cause the fewest additional stops to the elevator and least additional delay on the way to the passenger destination floor. In addition, the elevator estimated time of arrival to a destination floor is calculated separately for each deck, taking into account the stops already existing for the elevator and the additional stops caused by the selected landing call. Further the landing call is allocated to the deck for which the estimated time of arrival to the destination floor is least. In addition, the best deck for each landing call is selected by minimizing a cost function. The cost function may include the estimated time of arrival to the destination floor. Alternatively, the cost function may also include the estimated time of arrival to the furthest call floor.
Abstract:
The present invention prepares a rule base for storing therein a plurality of control rule sets, predicts a group management performance such as a waiting time distribution which is obtained when applying an arbitrary rule set stored in the rule base to the current traffic situation, and selects the optimal rule set in accordance with the performance prediction result. In addition, a weight database for storing therein weight parameters of a neural net corresponding to the rule sets and performance learning measure for correcting the weight parameters in the weight database in accordance with the learning result of the neural net is provided, whereby the prediction of the group management performance by the neural net using the corrected weight parameters is carried out. As a result, the optimal rule set is applied at all times to carry out the group management control for a plurality of elevators in order to provide passengers with the excellent service and also to enhance the prediction accuracy in correspondence to the actual operating situation of a plurality of elevators.
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:
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.