Title :
Integrating diagnostic knowledge
Author :
Havlicsek, Bruce L.
Author_Institution :
Westinghouse Electr. Corp., Hunt Valley, MD, USA
Abstract :
Three model-based diagnostic approaches have been developed: heuristic probing, simulation using truth maintenance, and simulation using constraint relaxation. Heuristic probing uses a variety of information to determine the order in which measurements are made. Truth maintenance uses complex simulation models to compare measured and expected signal values and then derive a diagnosis. Simulation with constraint relaxation is similar to truth maintenance, but heuristics can be applied to limit the amount of simulation performed. The key feature of each approach is the elimination of manual diagnostic test programming
Keywords :
automatic test equipment; automatic testing; digital simulation; expert systems; fault location; knowledge based systems; ATE; Westinghouse; artificial intelligence; constraint relaxation; diagnostic knowledge integration; expert diagnostic system; heuristic probing; simulation; truth maintenance; Automatic testing; Computational modeling; Computer simulation; Data mining; Databases; Personnel; Power engineering and energy; Power engineering computing; Power system modeling; System testing;
Conference_Titel :
AUTOTESTCON '88. IEEE International Automatic Testing Conference, Futuretest. Symposium Proceedings
Conference_Location :
Minneapolis, MN
DOI :
10.1109/AUTEST.1988.9607
