Servomechanism of BLDC Drive Using Pole Placement Technique

BLDC Motors are advantageous over brushed DC Motors in a wide variety of applications. Almost every BLDC motor application requires the speed control of the motor. The pole placement technique employed in this paper controls the speed of the BLDC. This technique is implemented using SISOTOOL/MATLAB. Using this technique, the poles of the system are placed in the correct location to give the desired speed. The speed response of the system under no-load and loaded conditions validates the designed controller. The results also show the effects of stator current , back emf and torque of the drive.