A diagnostic software package is currently being developed at NASA LeRC that utilizes qualitative model-based reasoning techniques. These techniques can provide diagnostic information about the operational condition of the modeled rocket engine system or subsystem. The diagnostic package combines a qualitative model solver with a constraint suspension algorithm. The constraint suspension algorithm directs the solver's operation to provide valuable fault isolation information about the modeled system. A qualitative model of the Space Shuttle Main Engine's oxidizer supply components was generated. A diagnostic application based on this qualitative model was constructed to process four test cases: three numerical simulations and one actual test firing. The diagnostic tool's fault isolation output compared favorably with the input fault condition.
Qualitative model-based diagnostics for rocket systems
Joint Propulsion Conference and Exhibit ; 1993 ; Monterey, CA, United States
1993-06-01
Conference paper
No indication
English
Qualitative model-based diagnostics for rocket systems
NTRS | 1993
|Qualitative model-based diagnostics for rocket systems
AIAA | 1993
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