Calibration system and calibration method calibrating mechanical parameters of wrist part of robot

摘要

A calibration system able to calibrate mechanical parameters of a wrist part by a simpler manner is provided. The calibration system utilizes a target fastened at a predetermined position with respect to the joint closest to a hand of a robot and an imaging device set around the robot so as to calibrate the parameters of a mechanical model representing the wrist part of the robot. The posture of the target is changed from a predetermined initial position to generate a plurality of preliminary positions. Using these preliminary positions as starting points, the end point position of the robot whereby the target becomes a predetermined positional relationship with respect to the imaging device on the image obtained by capturing an image of the target is calculated. The calibration system uses the calculated end point position as the basis to calibrate the mechanical parameters of the wrist part.