Elevator group supervisory control system using target route preparation

An elevator group control system for controlling multiple elevators each of which serves a plurality of floors, comprising:

• a target route preparation section which determines, for each of the multiple elevators, a position and an upward or downward transportation upon a lapse of a predetermined time period, and which generates, for each of the multiple elevators, a new target route during the predetermined time period from a current time point in accordance with positions of the respective elevators at the current time point so that the each elevator locates at the determined position and in the determined upward or downward transportation upon the lapse of the predetermined time period from the current time point, by adjusting a position of a turnaround point of a target route before adjustment to a time axis direction;
• and
• a controller which transports the each elevator so that an actual trajectory of the each elevator becomes closer to the new target route of the each elevator.