A Practical Implementation of Fuzzy PD Versus Fuzzy PI Based DC Motor Speed Controllers

Publication Date : 13/05/2020

Author(s) :


Volume/Issue :
Volume 15
Issue 2
(05 - 2020)

Abstract :

This paper presents a real-time implementation of Proportional-Integral (PI) Fuzzy and Proportional-Derivative (PD) Fuzzy controllers for speed control of a DC motor. Performance of the two controllers were compared experimentally in terms of speed tracking and required control signal using step, sinusoidal and square wave commands. Based on the results obtained, it was found that the PI-Fuzzy was able to track the step command without steady state error (SSE) while the PD-Fuzzy tracked with 0.7 rev/s (14%) SSE. In terms of the control signal, the PI-Fuzzy required 5.7 V while PD-Fuzzy required 12 V. For the sinusoidal command, the results revealed that the PD-Fuzzy performed slightly better than the PI-Fuzzy in command tracking, however the PI-Fuzzy had smoother control signal. In case of the square wave command, the PI-Fuzzy tracked better whereas the PD-Fuzzy appears to be faster. PD-Fuzzy required higher control signal (11.96V) when compared to PI-Fuzzy (5.68V).

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