Abstract: Disclosed herein is a method of controlling a robot arm to make ice cream. The method of controlling includes: receiving ice cream order information; gripping an ice cream capsule disposed on a table using the gripper of a robot arm; placing the ice cream capsule on a capsule support; gripping a cup configured to accommodate ice cream using the gripper of the robot arm; moving the cup under the capsule support while the gripper is gripping the cup; and discharging ice cream in the ice cream capsule to the cup. Discharging the ice cream includes controlling the robot arm so that the cup is rotated while the ice cream is being discharged.

Abstract: A method of controlling a movement of a robot based on determination of a risk level includes: a risk level determining operation of determining a risk level related to a motion of the robot; and a robot control operation of controlling the movement of the robot based on the risk level, wherein the robot transfers an object. The determination of the risk level related to the motion of the robot includes: an internal risk level determining operation of determining an internal risk level based on an attribute of the object; and an external risk level determining operation of determining an external risk level related to an environmental state around the robot.

Abstract: A method of controlling a movement of a robot based on determination of a risk level includes: a risk level determining operation of determining a risk level related to a motion of the robot; and a robot control operation of controlling the movement of the robot based on the risk level, wherein the robot transfers an object. The determination of the risk level related to the motion of the robot includes: an internal risk level determining operation of determining an internal risk level based on an attribute of the object; and an external risk level determining operation of determining an external risk level related to an environmental state around the robot.

Abstract: Disclosed herein are an unmanned payment method and system using a mobile robot in a store. The unmanned payment method includes: acquiring an image through a camera sensor installed above the plate of a mobile robot; recognizing a product, selected and taken by a customer, using the acquired image; identifying a table related to the customer; and calculating a payment amount for the product for the identified table.

Abstract: Disclosed herein is a method of controlling a robot arm to make ice cream. The method of controlling includes: receiving ice cream order information; gripping an ice cream capsule disposed on a table using the gripper of a robot arm; placing the ice cream capsule on a capsule support; gripping a cup configured to accommodate ice cream using the gripper of the robot arm; moving the cup under the capsule support while the gripper is gripping the cup; and discharging ice cream in the ice cream capsule to the cup. Discharging the ice cream includes controlling the robot arm so that the cup is rotated while the ice cream is being discharged.