Evaluation of Motion Reliability for Robot Manipulator

Motion reliability is important in the application of robot manipulator. In this paper, we evaluated the motion reliability of robot manipulator through degree of reliability, process capability index, and process performance index. The repeated positioning accuracy was derived to calculate these three indices. These indices were applied to two robots through experiments. The experimental results showed that the proposed indices can evaluate the motion reliability of robot manipulator. The results can be considered as the criterion in the selection of robot manipulator.