State Space Formation and Fuzzy Logic Control Based Performance Analysis of DC Motor Drives

In this paper, a state space canonical form of DC motor is designed mathematically and then simulated in MATLAB Simulink. For a stable DC motor drive operation, a closed loop is required which accompany DC motor, controller, chopper and sensors. Further, in this manuscript a Fuzzy logic controller (FLC) is designed using fuzzy toolbox of MATLAB. Later, the canonical form of DC motor along with FLC and other major components of closed loop system a simulation is carried out with a load. Performance of this closed loop is observed on two cases. First, when the inner closed loop is unity and next is with complete closed loop system. Speed response for both cases is observed along with load. Time domain analysis parameters for these two cases are calculated and compared too. Comparison analysis shows the effectiveness and usefulness of the designed fuzzy logic controller with the closed loop DC motor drive.