Fuzzy Control of a Brushless DC Motor without a Position Sensor

This paper discribes a variable speed system of the bnushlss dc motor controlled by 8098 single chip microprocessor. An approach to position sensorless is studied and velocity regulator is realized by a kind of FUZZY controller. Experimental results show that the brushless dc motor can operate successfully without position sensor, and the FUZZY controller of the brushless dc motor has desirable controlling effect.