A Comparative Study between DC Speed Controller Techniques

DC motor is the most common choice if wide range of adjustable speed drive operation is specified. Of the three kinds of DC motors - series shunt and separately excited DC motors, separately excited DC motors are most often used. Different speed can be obtained by changing the armature voltage and the field voltage A common actuator in control systems is the DC motor. It directly provides the rotary motion and, coupled with wheels or drums and cables, can provide transitional motion. Today variant applications require more and more features such as speed applications to multipurpose accessories, user friendly interfaces, and security features. Such new requirements can be achieved through a fuzzy logic approach. Nowadays, most of fuzzy logic based controls are only limited to a complicated ranking management of user interfaces, sensors and actuators, corresponding to a slow software speed operation. Fuzzy Logic motor control is a promising technique for extracting maximum performance from modern motors. More efficient motors can significantly reduce energy consumption and help mitigate environmental problems such as acid rain and global warming. Today improved motor control has reached a point requiring either highly accurate simulation of the complex, non-linear system or an alternate mechanism for predicting and optimizing controlled motor system behavior. Fuzzy logic has been chosen here to fill the latter role.