Romex - An Expert System Testbed For Turbomachinery Diagnostics.
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A rule based system developed for vibration oriented diagnosis of turbomachinery for fault identification and for predictive maintenance is described. The system is implemented in a PC based PROLOG environment, with the Dempster Shafer theory of belief functions utilized for evidential support of hypotheses. The direct uses of PROLOG for knowledge representation, rule interpretation, control strategy, and user interaction are described. The vibration fault diagnosis system is considered to be one component of a comprehensive system for turbomachinery. The framework of this comprehensive system comprises hierarchical levels of generic rules (surface knowledge) and generic analytical simulation models (deep knowledge). The root level includes the surface and deep knowledge for vibration, bearings, lubricant, seals, gears and couplings, and mechanical/metallurgical aspects of fault detection. Another level comprises the generic but specific knowledge base for various categories of turbomachinery, i.e., pumps, compressors, turbines, engines. The third level includes the installation specific rules, maintenance, repair, and troubleshooting logs, and other specific usage experiences. It is shown that each component of the comprehensive system can be viewed as a distinct expert system which can be developed and utilized independently of the other subsystems while the comprehensive system is evolved over a period of time.
Lewis, David W.; Sheth, Pradip N. (1990). Romex - An Expert System Testbed For Turbomachinery Diagnostics.. Texas A&M University. Turbomachinery Laboratories. Available electronically from