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Towards robustness in neural network based fault diagnosis. (English) Zbl 1155.93344

Summary: Challenging design problems arise regularly in modern fault diagnosis systems. Unfortunately, classical analytical techniques often cannot provide acceptable solutions to such difficult tasks. This explains why soft computing techniques such as neural networks become more and more popular in industrial applications of fault diagnosis. Taking into account the two crucial aspects, i.e., the nonlinear behaviour of the system being diagnosed as well as the robustness of a fault diagnosis scheme with respect to modelling uncertainty, two different neural network based schemes are described and carefully discussed. The final part of the paper presents an illustrative example regarding the modelling and fault diagnosis of a DC motor, which shows the performance of the proposed strategy.

MSC:

93B35 Sensitivity (robustness)
93C10 Nonlinear systems in control theory
92B20 Neural networks for/in biological studies, artificial life and related topics
93C95 Application models in control theory
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References:

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