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Using Structural and Functional Information in Diagnostic Design

Author(s)
Hamscher, Walter
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Abstract
We wish to design a diagnostic for a device from knowledge of its structure and function. the diagnostic should achieve both coverage of the faults that can occur in the device, and should strive to achieve specificity in its diagnosis when it detects a fault. A system is described that uses a simple model of hardware structure and function, representing the device in terms of its internal primitive functions and connections. The system designs a diagnostic in three steps. First, an extension of path sensitization is used to design a test for each of the connections in teh device. Next, the resulting tests are improved by increasing their specificity. Finally the tests are ordered so that each relies on the fewest possible connections. We describe an implementation of this system and show examples of the results for some simple devices.
Date issued
1983-06-01
URI
http://hdl.handle.net/1721.1/6867
Other identifiers
AITR-707
Series/Report no.
AITR-707

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  • AI Technical Reports (1964 - 2004)

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