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Abstract



Survey and Evaluation of Diagnostic Tools


If a fault occurs in a technical system, for example in an airplane, it is important to beable to detect that there is a fault and to find what in the system that is faulty. Theprocedure of determining, given certain observations, if faults are present and if so thelocation of faults is called a diagnosis. For achieving diagnosis we can use computersoftware that takes observations of a system as input and that generates a diagnosis asoutput. This is called a diagnostic system. To build a diagnostic system we needanother piece of computer software which is called a diagnostic tool. This thesis willpresent a market survey for diagnostic tools as well as an analysis of three of the toolsfound in the survey. The analysis can be seen as constituted by two different aspects,one focusing on the diagnostic methods with which each tool creates diagnosticsystems, the other focusing on practical details that determine the usability of eachtool. The analysis found that the largest differences were between the methods used increating the diagnostic systems.

Rickard Nilsson and Markus Hertzman

2008

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