The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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On-Line Fuzzy Auto Tuning for PID Controller

PID 제어기의 On-Line 퍼지 자동동조

  • Hwang, Hyeong-Su (Dept.of Electrical Electronics Engineering, Wonkwang University) ;
  • Choe, Jeong-Nae (Dept.of Control Instrumentation Engineering, Wonkwang University) ;
  • Lee, Won-Hyeok (Dept.of Control Instrumentation Engineering, Wonkwang University)
  • Published : 2000.02.01
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Abstract

In this paper, we proposed a new PID tuning algorithm by the fuzzy set theory to improve the performance of the PID controller. The new tuning algorithm for the PID controller has the initial value of parameter Kc, $\tau$I, $\tau$D by the Ziegler-Nichols formula using the ultimate gain and ultimate period from a relay tuning experiment. We get error and error change of plant output correspond to the initial value and new proportion gain(Kc) and integral time($\tau$I) from fuzzy tunner. This fuzzy tuning algorithm for PID controller considerably reduced overshoot and rise time compare to any other PID controller tuning algorithms. In real parametric uncertainty systems, the PID controller with Fuzzy auto-tuning give appreciable improvement in the performance. The significant properties of this algorithm is shown by simulation In this paper, we proposed a new PID algorithm by the fuzzy set theory to improve the performance of the PID controller.

Keywords

References

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