Automatic determination of optimal fault detection filter

Optimal detection filters can greatly enhance fault detection performance, but designing these filters requires fault data which is difficult to obtain in practice. This paper proposes a scheme that automatically determines the optimal detection filter from a filter bank online without using fault d...

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Bibliographic Details
Published in:Journal of process control 2022-10, Vol.118, p.69-81
Main Authors: Zhou, Jinming, Zhu, Yucai
Format: Article
Language:English
Subjects:
Fault detection
Filter design
Kernel density estimation
System identification
Tennessee Eastman process
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Summary:Optimal detection filters can greatly enhance fault detection performance, but designing these filters requires fault data which is difficult to obtain in practice. This paper proposes a scheme that automatically determines the optimal detection filter from a filter bank online without using fault data. The method can improve fault detection rate and accelerate detection speed. In order to reduce the false alarm rate, a method of threshold setting is introduced based on kernel density estimation. Implementation issues concerning filter bank design and online decision rule are also discussed. The method is validated in a numerical example and Tennessee Eastman process, and its performance is compared to those of other state-of-the-art methods. •Enabling automatic determination of optimal fault detection filter.•Using kernel density estimation to refine the thresholds.•Enhancing fault detection performance without using fault data.•Performance validated in Tennessee Eastman benchmark.
ISSN:0959-1524
1873-2771
DOI:10.1016/j.jprocont.2022.08.009