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System and method for early disc drive fault detection

  • US 5,737,519 A
  • Filed: 08/22/1995
  • Issued: 04/07/1998
  • Est. Priority Date: 08/22/1995
  • Status: Expired due to Fees
First Claim
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1. An apparatus for early detection of faults in a device under test comprising:

  • (a) means for obtaining parametrics for a device under test;

    (b) means for providing a database of historical parametric patterns and corresponding error rates;

    (c) means for determining a similarity measure for each historical parametric pattern by comparison of the historical parametrics to the parametrics;

    (d) means for estimating an error rate for the device from the corresponding error rates of a selected number of historical parametric patterns;

    (e) means for providing a set of linguistic rules;

    (f) means for applying the linguistic rules to the set of fuzzy linguistic domains for the estimated error rate and parametrics to give a classification of the device; and

    (g) means for dispositioning the device for further operations according to the classification of the device.

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