System for controlling total picking of robot for processing orders at same time, and system

A method of controlling at least one server configured to assign a task to a plurality of robots assisting to a worker, the method comprising:

• generating, by the server, one or more picking rounds including a plurality of orders with respect to the same unloading location;
• identifying, by the server, at least one robot corresponding to an idle state as a target robot;
• selecting, by the server, one or more picking rounds in progress and assigning the target robot to the selected picking round;
• selecting a location group matching a picking unit in a waiting state among a plurality of location groups in which locations at which at least one shipment related to the selected picking round is stored are grouped;
• and
• assigning the target robot to the selected location group and assigning a picking task to the target robot according to a picking unit matching the selected location group,
• wherein the picking unit corresponds to a minimum unit of work of the robot, which is defined based on the same location and the same shipment,
• at least one robot including the target robot is assigned to the selected location group,
• each location group is set to match a plurality of stations corresponding to a location at which the robot is stopped to pick the shipment stored at the location, and
• the method of controlling the at least one server includes controlling the target robot to move to one of the plurality of stations matching the selected location group and perform picking, when the picking task is assigned to the target robot.