Study on measurement of positional precision for industrial robot

The aim of this paper is to test the positional precision of the execution terminal of the industrial robot based on a non-contact laser tracing measurement technique aiming. The target is found in terms of tracing mirror attached in measurement position. This method utilizes the linear motion units and photo detection units to trace the target actively. The measurement of the target coordinates are measured with the laser interferometer linear measurement module and the grating ruler. This system can achieve the position measurement of the planar motion objects without contact in real-time condition and also possesses the high precision.