The problem in Accuracy Compensation of Industrial Robot

Industrial robots are increasingly being used in automated production line with their high flexibility and low cost However the poor features of repeat positioning accuracy and absolute positioning accuracy of industrial robots have been a bottleneck restricting its application in higher accuracy situation Many scholarshave studied methods to improve the accuracy of robot But there is congenital defect for industrial robots when their accuracy is further improved by compensation and few people pay attention to this In this article the backlash of industrial robot joint is discussed and its impact on accuracy compensation is analyzed Finally the method of eliminating the backlash and further improving the robot s accuracy based on joint feedback is proposed