An SSME High Pressure Oxidizer Turbopump diagnostic system using G2 real-time expert systemAn expert system which diagnoses various seal leakage faults in the High Pressure Oxidizer Turbopump of the SSME was developed using G2 real-time expert system. Three major functions of the software were implemented: model-based data generation, real-time expert system reasoning, and real-time input/output communication. This system is proposed as one module of a complete diagnostic system for the SSME. Diagnosis of a fault is defined as the determination of its type, severity, and likelihood. Since fault diagnosis is often accomplished through the use of heuristic human knowledge, an expert system based approach has been adopted as a paradigm to develop this diagnostic system. To implement this approach, a software shell which can be easily programmed to emulate the human decision process, the G2 Real-Time Expert System, was selected. Lessons learned from this implementation are discussed.
Document ID
19930032418
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Guo, Ten-Huei (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Annual Health Monitoring Conference for Space Propulsion Systems, 3rd, Cincinnati, OH, Nov. 13, 14, 1991, Proceedings (A93-16401 04-20)