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Hypothetical Scenario Generator for Fault-Tolerant DiagnosisThe Hypothetical Scenario Generator for Fault-tolerant Diagnostics (HSG) is an algorithm being developed in conjunction with other components of artificial- intelligence systems for automated diagnosis and prognosis of faults in spacecraft, aircraft, and other complex engineering systems. By incorporating prognostic capabilities along with advanced diagnostic capabilities, these developments hold promise to increase the safety and affordability of the affected engineering systems by making it possible to obtain timely and accurate information on the statuses of the systems and predicting impending failures well in advance. The HSG is a specific instance of a hypothetical- scenario generator that implements an innovative approach for performing diagnostic reasoning when data are missing. The special purpose served by the HSG is to (1) look for all possible ways in which the present state of the engineering system can be mapped with respect to a given model and (2) generate a prioritized set of future possible states and the scenarios of which they are parts.
Document ID
20100002237
Document Type
Other - NASA Tech Brief
Authors
James, Mark (California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
June 1, 2007
Publication Information
Publication: NASA Tech Briefs, June 2007
Subject Category
Quality Assurance and Reliability
Report/Patent Number
NPO-42516
Distribution Limits
Public
Copyright
Public Use Permitted.

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