Abstract:Feeding system is an important part of automatic industrial manufacturing line. In order to overcome the problems of low efficiency and low precision,a servo control system was designed based on PC and motion control card. In this system, PC was selected as the center of the system and motion control card was taken in charge of the details of motion controlling. By calling the motion function library in the motion control card,the system software platform was developed which had good accuracy, versatility and flexibility.Finally, it is indicated that this system has advantages of high precision, high performance and good economic in practical.