A Petri net approach to fault verification in phased mission systems using the standard deviation technique

Lloyd, Michael D. and Andrews, John and Remenyte-Prescott, Rasa and Pearson, John T. and Hubbard, Peter (2014) A Petri net approach to fault verification in phased mission systems using the standard deviation technique. Quality and Reliability Engineering International, 30 (1). pp. 83-95. ISSN 1099-1638

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Abstract

Health management systems are now standard aspects of complex systems. They monitor the behaviour

of components and sub-systems and in the event of unexpected system behaviour diagnose faults that

have occurred. Although this process should reduce system downtime it is known that health management

systems can generate false faults that do not represent the actual state of the system and cause resources to be

wasted. The authors propose a process to address this issue in which Petri nets are used to model complex

systems. Faults reported on the system are simulated in the Petri net model to predict the resultant system

behaviour. This behaviour is then compared to that from the actual system. Using the standard deviation technique

the similarity of the system variables is assessed and the validity of the fault determined. The process has

been automated and is tested through application to an experimental rig representing an aircraft fuel system.

The success of the process to verify genuine faults and identify false faults in a multi-phase mission is demonstrated.

A technique is also presented that is specific to tank leaks where depending on the location and size of

the leak, the resulting symptoms will vary.

Item Type: Article
Additional Information: This is the accepted version of the following article: M.D. Lloyd, J.D. Andrews, R. Remenyte-Presscott, J.T. Pearson & P. Hubbard, A Petri net approach to fault verification in phased mission systems using the standard deviation technique, Quality and Reliability Engineering International, 30(1) (2014), 83-95, doi: 10.1002/qre.1478, which has been published in final form at: http://onlinelibrary.wiley.com/doi/10.1002/qre.1478/abstract
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Civil Engineering
Identification Number: https://doi.org/10.1002/qre.1478
Depositing User: Remenyte-Prescott, Dr Rasa
Date Deposited: 31 Jul 2014 15:45
Last Modified: 13 Sep 2016 14:31
URI: http://eprints.nottingham.ac.uk/id/eprint/3303

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