Patent ID: 11965319
Assignee: KOMATSU LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E  G

Claim 0:
1. A system for calibrating a work machine including a vehicle body and a work implement attached to the vehicle body, by using an external measurement apparatus, the system comprising:
an attitude sensor that outputs attitude data indicative of an attitude of the vehicle body;
a positional sensor attached to the vehicle body;
a storage device that stores machine data indicative of a position of the positional sensor in a vehicle body coordinate system;
an input device that receives an input of calibration data including
positions of at least two predetermined measurement points on the work machine measured by the external measurement apparatus, the at least two predetermined measurement points being spaced apart in a vehicle width direction of the work machine and the positions of the at least two predetermined measurement points being measured in an external coordinate system different from the vehicle body coordinate system, and
a position of the positional sensor in the external coordinate system measured by the external measurement apparatus; and

a processor configured to
calculate a deviation between an azimuth of the vehicle body coordinate system and an azimuth of the external coordinate system based on the at least two predetermined measurement points, and
calibrate the machine data based on the attitude data, the deviation, and the position of the positional sensor in the external coordinate system.