High-precision position control of belt drive system based on OPC communication

Abstract

Aiming at the problem of low precision of high-speed start-stop position of belt drive system controlled by PLC, the text takes the belt drive system driven by the brushless DC servo motor (BLDCM) as the research object, studying the PLC intelligent control system based on OPC communication. Firstly, a mathematical model is established. Then, a fuzzy adaptive PID control algorithm is proposed to perform self-tune the tape speed and its deviation rate. Finally, the simulation comparison is made with the traditional PID control in terms of speed and step response. Compared with the traditional PID, the overshoot of the fuzzy self-adaptive PID algorithm decreases by 20.3%; the response speed is increased by 33.33%. A prototype of the belt drive system is developed, and the result of the algorithm verification experiment shows that the experimental data is basically consistent with the simulation data, the error controlled within 8%. Research provide theoretical and experimental bases for improving the position accuracy and robustness of the belt drive system.