A Fuzzy Logic based Robust Speed Controller for Chopper Fed DC Motor Drive

Proportional-Integral (PI) controllers are conventionally used in speed control applications of dc drives. These controllers provide good steady state response but do not provide better dynamic response during transient conditions. In this paper an effort is made to design a fuzzy logic controller (FLC), which can provide a better dynamic as well steady state response for speed control application of dc drives. In this work a chopper fed separately excited dc motor is used for speed control application. The simulation results confirm the effectiveness of proposed FLC as the dynamic response has improved tremendously with less torque and armature current ripples.