The kinematics imperfections of two-wheel differential mobile robot will lead to systematic error,which will affect the navigation and positioning accuracy of the robot.In order to reduce the influence of systematic error of mobile robots on positioning accuracy,calibration scheme of the systematic error for two-wheel differential mobile robots were studied,and the calibration parameters are obtained through the position deviation generated by straight back and forth motion of the robot.The validity of the calibration parameters is verified by the experiments of back and forth straight path an...