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Fault finder expert system

  • US 5,214,653 A
  • Filed: 10/22/1990
  • Issued: 05/25/1993
  • Est. Priority Date: 10/22/1990
  • Status: Expired due to Term
First Claim
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1. A device for finding faults in a target system that has a plurality of LRUs, comprising:

  • means for receiving input data relating to a state of the target system;

    means for storing a probability of failure of individual LRUs of the target system;

    means for storing rules, said rules relating conclusions and premises, at least some of said conclusions identifying a faulty LRU;

    means for determining a certainty of a conclusion of a stored rule in response to the comparison of the premises of the rule and the input data;

    means for ordering the conclusions of the stored rules as a function of both the probability of failure of individual LRUs and the certainties of conclusions of the stored rules; and

    means for providing said ordered conclusions to a user via a computer-user interface to thereby indicate a most likely LRU to be a cause of the fault in the target system.

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