Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Weighted Integral H∞ Control of Induction Motor using T-S fuzzy

T-S 퍼지를 사용한 유도전동기의 가중적분 H∞ 제어

  • Received : 2013.02.06
  • Accepted : 2013.05.31
  • Published : 2013.06.30
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Abstract

This paper proposes a new $H_{\infty}$ T-S fuzzy controller with a novel integral control for induction motors which have nonlinear dynamics. The $H_{\infty}$ T-S fuzzy controller is used for the nonlinearity and robustness and weighted integral is used for tracking problem and control performance. A T-S Fuzzy controller is the fuzzy combination of local linear controllers considering the overall stability, and LMI(Linear Matrix Inequlity) is used for determining the gains of linear controllers. The tracking problem of an induction motor is changed into regulator problem by introducing the integral control technique with weighting factor, diminishing the conservatism of $H_{\infty}$ T-S fuzzy controller.

본 논문은 유도전동기의 제어에 있어서 성능향상을 위하여 가중치를 도입한 새로운 적분제어기법을 제안하여 $H_{\infty}$ T-S 퍼지제어기와 함께 사용하였다. $H_{\infty}$ T-S퍼지제어기는 유도전동기의 비선형성과 강인성을 위하여 사용되었고 가중치를 도입한 적분제어기는 추적문제를 조정기문제로 바꾸어 줌과 동시에 제어성능을 향상시키기 위해서 사용되었다. $H_{\infty}$ T-S퍼지제어기는 국부선형모델을 기반으로 구해지는 국부선형제어기 들의 선형결합으로 구성되며 각각의 국부 선형제어이득들은 LMI(Linear Matrix Inequlity)를 이용하여 계산된다. 본 논문에서는 가중치에 따라 결정되는 다양한 LMI해의 선택을 가능하게 함으로써 제어성능을 향상시켰다.

Keywords

References

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