Development of a fuzzy logic controller for servo systems

This paper presents a fuzzy logic controller (FLC) for a servomotor used for position control. The application of FLCs to servo systems produces results superior to classical controllers and their robustness qualities are acknowledged. For instance, it is seen that, if there is a change in system parameters or load disturbances, the response of the system due to the proportional-integral-derivative (PID) controller is considerably affected and the PID controller needs re-tuning. However, FLCs preserve the desired response over a wide range of system parameters and load disturbances. In this work, the simulation and implementation of FLC for a dc servomotor, have been carried out under different working conditions.