Neuro-fuzzy networks and their application to fault detection of dynamical systems

  • Authors:
  • Józef Korbicz;Marek Kowal

  • Affiliations:
  • University of Zielona Góra, Institute of Control and Computation Engineering, ul. Podgórna 50, 65-246 Zielona Góra, Poland;University of Zielona Góra, Institute of Control and Computation Engineering, ul. Podgórna 50, 65-246 Zielona Góra, Poland

  • Venue:
  • Engineering Applications of Artificial Intelligence
  • Year:
  • 2007

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Abstract

The paper tackles the problem of robust fault detection using Takagi-Sugeno neuro-fuzzy (N-F) models. A model-based strategy is employed to generate residuals in order to make a decision about the state of the process. Unfortunately, such an approach is corrupted by model uncertainty due to the fact that in real applications there exists a model-reality mismatch. In order to ensure reliable fault detection, the adaptive threshold technique is used to deal with the problem. The paper focuses also on the N-F model design procedure. The bounded-error approach is applied to generate rules for the model using available data. The proposed algorithms are applied to fault detection in a valve that is a part of the technical installation at the Lublin sugar factory in Poland. Experimental results are presented in the final part of the paper to confirm the effectiveness of the method.