The research of fuzzy PID control application in DC motor of automatic doors

Abstract

Currently, DC motor of automatic doors speed regulating system utilizes PID control which has parameters tuning difficulties, poor stability, and imprecise control. To solve the above existent problem, this paper adopts the control strategy of fuzzy algorithm combining with PID control, introducing method of fuzzy PID control used in DC motor speed regulating system of automatic doors. Through establishing DC motor mathematical model , MATLAB simulation of PID control and fuzzy PID control are compared in this paper, the simulation results show the fuzzy PID control has fast dynamic response, high control precision, small overshoot and the control system is stable, its robustness and adaptability is strong. Control demand of the system can be satisfied and the safety operation of automatic doors can be ensured by fuzzy PID control.