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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2019

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The comparison of fault distinguishability approaches – case study

Kościelny J. M., Bartyś M., Rostek K.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2019

Vol. 67, nr 6

1059--1068

A comprehensive characterization of four selected fault distinguishability methods is presented herein. All considered methods are derived from structural residual approaches referring to mdel-based diagnostics. In particular, these methods, are based on binary diagnostic matric, foult isolation system, sequences of symptoms, and their combination. fault distinguishability issues are discussed based on an example of four pressure vessels system. Substantian benefit are shown in fault distinguishability figures obtained by utilising extended knowledge regarding foult-symptom relation. Finally, the values of three fault distinguishability metrix are calculated for each method. For the case study, the highest score is achived using the multivalued foult isolation method combined with a diagnosis utilising information regarding the antecedence of symptoms.