Patent ID: 11865717
Assignee: LG ELECTRONICS INC.
Field: Handling (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 9:
10. A method of controlling movement of a cart robot in response to a change in a travel surface using artificial intelligence, the method comprising:
sensing the change in the travel surface of the cart robot by an inertial measurement unit (IMU) sensor of the cart robot;
sensing a distance from an installed object placed in a direction of an advance of the cart robot by an obstacle sensor of the cart robot;
calculating a time point of the cart robot's exit from the travel surface by a controller of the cart robot;
increasing magnitude of electric energy to be supplied to a plurality of moving parts of the cart robot by the controller at the time point of the cart robot's exit from the travel surface;
sensing a gradient of the cart robot, caused by a difference between heights of a moving part at a front and a moving part at a rear of the cart robot by the IMU sensor; and
when the distance sensed by the obstacle sensor at a front of the cart robot is a predetermined exit distance reference value or greater, and a tilt angle of the cart robot decreases, increasing the magnitude of the electric energy to be supplied to the plurality of moving parts by the controller in proportion to force sensed by a force sensor.