Patent ID: 8145394

Claim:
A method of automatically calibrating an earthworking machine equipped with an articulated arm in a plane, and unable to rotate about its axis of symmetry, wherein a working tool is positioned at the end of the arm, the calibration method comprising, after a series of movements of the end of the working tool between reference points that are not on the earthworking machine and are located in accordance with a given geometrical configuration, collecting angular position data relating to different articulated components of the earthworking machine, said angular position data being (a) derived by removable and interchangeable detector devices positioned in an imprecise manner on each articulated component of the machine, and (b) sent by a communication link to a system for calibrating the earthworking machine; and operating a calculation module of the calibration system of the machine to determine, by use of known input data representing the reference points, unknown parameters representing the positioning inaccuracies of the detectors.