Research on control of medical permanent magnet synchronous Motor based on fuzzy adaptive fractional order PID

Abstract

The medical centrifuge is mainly used for the separation, purification and preparation of blood, and is the basic equipment in medicine and biology research fields. The speed, response time and anti-interference of centrifuge have great influence on experimental results and disease diagnosis. In order to solve the slow response and poor dynamic performance of permanent magnet synchronous motor in medical centrifuge. In this paper, a fuzzy adaptive fractional ORDER PID control system is designed by combining fractional order control theory with fuzzy control theory. Fractional order PID control system aims to improve the control accuracy of permanent magnet synchronous motor system, and fuzzy control realizes the online tuning of fractional order PID parameters. Finally, traditional PID, fractional-order PID and fuzzy adaptive PID control systems are selected for simulation experiments. The experimental comparison results show that the fuzzy adaptive fractional-order PID controller has fast response speed, strong anti-interference ability, good dynamic and static performance, and strong robustness.