LOCATION TRACKING METHOD OF ROBOT

PURPOSE: A method for searching a workpiece of a robot is provided to improve an ability to search a position of a workpiece by reducing a circulation process of the coordinate system because a robot can grasp the position of the workpiece with only one coordinate system of the workpiece. CONSTITUTION: A method for searching a workpiece of a robot is as follows. A workpiece is recognized through a vision(S10). A direction of the workpiece is sensed. A distance from a robot arm to the workpiece is measured by using a laser distance sensor. Coordinates of the workpiece is set(S20). A method for setting coordinates of the workpiece is as follows. A distance from the laser distance sensor to an end part of the robot arm is set(S30). A distance from the end part of the robot arm to the workpiece is measured(S40). [Reference numerals] (S10) Step for recognizing a direction of a workpiece; (S20) Step for setting a location coordinate of a work piece; (S30) Step for setting a robot arm distance; (S40) Step for measuring a workpiece distance; (S50) Step for moving a coordinate