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Fuzzy condition monitoring of recirculation fans and filters

Author

Listed:
  • Mike Gerdes

    (Hamburg University of Applied Sciences)

  • Diego Galar

    (Luleå University of Technology
    University of Skövde)

Abstract

A reliable condition monitoring is needed to be able to predict faults. Pattern recognition technologies are often used for finding patterns in complex systems. Condition monitoring can also benefit from pattern recognition. Many pattern recognition technologies however only output the classification of the data sample but do not output any information about classes that are also very similar to the input vector. This paper presents a concept for pattern recognition that outputs similarity values for decision trees. Experiments confirmed that the method works and showed good classification results. Different fuzzy functions were evaluated to show how the method can be adapted to different problems. The concept can be used on top of any normal decision tree algorithms and is independent of the learning algorithm. The goal is to have the probabilities of a sample belonging to each class. Performed experiments showed that the concept is reliable and it also works with decision tree forests (which is shown during this paper) to increase the classification accuracy. Overall the presented concept has the same classification accuracy than a normal decision tree but it offers the user more information about how certain the classification is.

Suggested Citation

  • Mike Gerdes & Diego Galar, 2016. "Fuzzy condition monitoring of recirculation fans and filters," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 7(4), pages 469-479, December.
    • Handle: RePEc:spr:ijsaem:v:7:y:2016:i:4:d:10.1007_s13198-016-0535-y
    DOI: 10.1007/s13198-016-0535-y
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