DC Torque Motor Speed Control Based on Fuzzy-PID

A Fuzzy-PID controller is designed based on the combination modes of Fuzzy control, and its PID control is analyzed in the paper. The algorithms can be automatically switched between Fuzzy control and PID control according to if the error is larger than the threshold. Then a DC torque motor speed control system is presented by using an encoder, an 80196KC microcontroller, a 16bit D/A and a DC torque motor. Experiments suggest that there is no overshoot, its steady-state error is less then 0.0004, and the setting time is less than PID control’s when the Fuzzy-PID controller is employed.