Performance evaluation of fuzzy controllers applied to speed control of DC shunt motor

  • Authors:

  • T. V. Narmadha;E. S. R. Shoba

  • Affiliations:

  • Department of Electronics and Instrumentation Engineering, St. Joseph's College of Engineering, Anna University, Jeppiaar Educational Trust, Chennai, Tamil Nadu, India;Department of Electronics and Instrumentation Engineering, St. Joseph's College of Engineering, Anna University, Jeppiaar Educational Trust, Chennai, Tamil Nadu, India

  • Venue:
  • FS'05 Proceedings of the 6th WSEAS international conference on Fuzzy systems
  • Year:
  • 2005

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Abstract

In this paper, performance of fuzzy PD, fuzzy PI, fuzzy PD+I, fuzzy PID controllers are evaluated and compared. The comparison is based on their ability of controlling the speed of DC shunt motor, which merely focuses on performance index of the controllers, and also time domain specifications namely rise time, settling time and peak overshoot. The experiments showed that the fuzzy PID controllers are the best performing candidates in all aspects. The Fuzzy PI controller exhibited null offset but suffers from poor stability and high peak overshoot, whereas the fuzzy PD controller exhibited fast rise time, with no overshoots but has a higher value of IAE. Thus, the comparative study recommends fuzzy PID controller but it is usually associated with complicated rule base and tedious tuning. To circumvent these problems, I this paper, the fuzzy PID controller is implemented in two simpler methods.