control system based on fuzzy logic

Owing to a small inertia moment, when compared with direct current commutator motors, as well as the vectorial way of control, brushless DC motors (BLDCM) with permanent magnets demonstrate perfect regulating and dynamic properties. The motors have got a number of advantages: simple construction and also simple control system, the lack of mechanical commutator, high efficiency, good dynamic properties, high density of power, low turns and high value of torque. Those motors are widely applied to servomotors of industrial robots and machine tools, precision instruments, computer equipment as well as driving motors of different types of vehicles. Compared with a DC motor, the BLDC motor uses an electric commutator rather than a mechanical commutator, so it is more reliable than the DC motor. In a BLDC motor, rotor magnets generate the rotor’s magnetic flux, so BLDC motors achieve higher efficiency. It has become possible because of their superior performance in terms of high efficiency, fast response, and weight, precise and accurate control, high reliability, maintenance free operation, brushless construction and reduced size, Torque to motor size ratio is high, Thermal overload & under load protection is provided