Performance Analysis of Speed Control of Separately Excited DC motor using Fuzzy logic Controller and Conventional PID

Development historically stems from economic growth via industrialization Today’s industries totally depend on control systems. Accurate control is critical to each and every process in industry. DC motors have been popular in the industry control area because DC motors have high starting torque characteristics, high response performance, reliability, flexibility and low cost. DC motors are used where speed and position control required. To control the speed of DC motor controllers are required. The control systems suffer from many problems like undesirable overshoot, longer settling time, vibrations and stability while going from one state to another state. PID controllers are used in process control industry but PID controllers do not work satisfactorily for nonlinear systems. Real world systems are linear as well as nonlinear. To deal with nonlinear systems intelligent control approaches are adopted i.e. knowledge based expert system, Fuzzy Logic and neural networks. Here to meet the control problems, Fuzzy Logic approach has been adopted. Fuzzy Logic approach gives satisfactory result than conventional controllers, they cover wide range of operating conditions and can also operate with noise and disturbances of a nature.