Comparison between Conventional and Fuzzy Logic PID Controllers for Controlling DC Motors
Fuzzy logic and proportional-integral-derivative (PID)
controllers are compared for use in direct current (DC) motors
positioning system. A simulation study of the PID position
controller for the armature-controlled with fixed field and field controlled
with fixed armature current DC motors is performed.
Fuzzy rules and the inferencing mechanism of the fuzzy logic
controller (FLC) are evaluated by using conventional rule-lookup
tables that encode the control knowledge in a rules form. The
performance assessment of the studied position controllers is
based on transient response and error integral criteria. The results
obtained from the FLC are not only superior in the rise time,
speed fluctuations, and percent overshoot but also much better in
the controller output signal structure, which is much remarkable
in terms of the hardware implementation.
Keywords: Three-term controller, PID controller, fuzzy systems,
fuzzy logic controller, DC Motors
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