Abstract:Link coordinates of the five degree of freedom (5-DOF) serial robot were set up by Denavit-Hartenberg method, and forward and inverse kinematic model of serial robot was established through homogeneous transformation matrix. Based on this, the pose error of the end of serial robot resulting from static errors was analyzed. The static pose error analytic model of the serial robot was developed by using small displacement composing method. By considered mechanism reliability as the evaluation guidelines of pose precision, the influence of errors of links parameters on static pose precision of the robot was analyzed, by using Monte Carlo numerical simulation method. Finally the joint is obtained by analyzing, which is the greatest impacted on the static pose precision.