Adaptive PID-Fuzzy Logic Controller for Brushless DC Motor

There is a increase in use of variable speed drives in all the fields like automobile, medicals and household that also increase the demand of brushless DC motors (BLDCM). As BLDC motor is superior over conventional DC motor in areas like higher efficiency, better speed-torque characteristics, noise reduction and low maintenance because there are no brushes to get wearout or produce sparking. Though most of the BLDC motors adopt PI controller and PWM scheme for the speed control of BLDCM. To make speed controlling more precise and robust an adaptive PID-fuzzy controller has been design. Dynamic changes in speed if required can be controller precisely.