Technique for producing an expert system for system fault diagno

Details Technique for producing an expert system for system fault diagno Technique for producing an expert system for system fault diagno

1989-07-28

1992-04-21

Smith, Jerry

Excavating

G01R 3128, G06F 1100

Patent

active

051074974

ABSTRACT:
The present invention relates to a technique for operation on a computer for developing the knowledge base for ultimately providing very fast and cost-efficient fault diagnosis systems. The present technique uses an effective hierarchy of rules where at a first level are rules which allow the arrangement of the system under test to be decomposed into a hierachy of sequential and parallel subsystems. At the second level are rules that generate the efficient testing rules for each pure subsystem. The second level rules can be compared to a node evaluation function in a typical problem of searching a graph to select the best node for expansion from a current list of candidate nodes, so that the best path to the correct system diagnosis is found in the shortest amount of time using a minimum of user input. Two heuristic rules are applied to speed-up the process of selecting the node as the best candidate for expansion. The resultant hierarchy of rules permit the cost-efficient knowledge base and resultant output test tree procedure to be generated for a fault diagnosis system to be applied for testing an associated device or system.

REFERENCES:
patent: 4228537 (1980-10-01), Henckels et al.
patent: 4242751 (1980-12-01), Henckels et al.
patent: 4633467 (1986-12-01), Abel et al.
patent: 4680761 (1987-07-01), Burkness
patent: 4727545 (1988-02-01), Glackemeyer et al.
patent: 4740349 (1988-04-01), Loftus et al.
"Clever Computers, Why Should Engineers Use A1?" by Paul Chung and Robert Inder (AM) University of Edinburgh, date unknown.
"Fault Diagnosis" Thomas J. Laffey, IEEE Potentials, Oct. 1986, pp. 8-11.
Yamamoto et al., New Generation Computing, vol. 4, No. 4, 1986, pp. 97-105.
Pipitone, Computer, vol. 19, No. 7, Jul. 1986, pp. 68-76.
Magliero et al., Autotestcon'87, San Francisco, Calif., Nov. 1987, pp. 61-64.
Bursch et al., Autotestcon'87, San Francisco, Calif., Nov. 1987, pp. 97-105.
Yoon et al., IEEE Trans Syst. Man Cybern., vol. 18, No. 4, Jul.-Aug. 1988, pp. 659-676.
Masuzawa et al., Syst. Comput. Japan., vol. 19, No. 8, Aug. 1988, pp. 54-67.
Viacroze et al., ISTFA 1988, Oct.-Nov. 1988, Los Angeles, Calif., pp. 153-159.
Eighth Annl Intl Phoenix Conf. on Computers and Communications, 1989 Conf. Proc., "A Design Methodology for Expert Systems for Diagnostic and Repair", A. Ghafoor et al, pp. 550-554.
Autotestcon '88 Symposium Proc., IEEE Intl Automatic Testing Conf., "Hybrid Diagnostic Strategy for an Expert System Controlled Automatic Test System (EXATS)", K. W. Pflueger, pp. 41-46.

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