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METHOD AND SYSTEM FOR DIAGNOSING FAULTS IN A PARTICULAR DEVICE WITHIN A FLEET OF DEVICES

  • US 20080243328A1
  • Filed: 04/02/2007
  • Published: 10/02/2008
  • Est. Priority Date: 04/02/2007
  • Status: Active Grant
First Claim
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1. A method for diagnosing faults in a particular device within a fleet of devices, the method comprising:

  • receiving performance data related to one or more parameters associated with a fleet of devices;

    processing the performance data to detect one or more trend shifts in the one or more parameters;

    detrending the one or more parameters to derive noise-adjusted performance data related to a particular parameter associated with a particular device;

    generating a fleet-based diagnostic model based on trend patterns and data characteristics associated with the fleet of devices, wherein the fleet-based diagnostic model comprises one or more fuzzy rules defining one or more expected trend shift data ranges for the one or more parameters associated with the fleet of devices;

    computing one or more scaling factors for the particular parameter associated with the particular device;

    scaling the one or more of fuzzy rules defined for the one or more parameters in the fleet-based diagnostic model, based on the one or more scaling factors, to generate a personalized diagnostic model for the particular parameter associated with the particular device; and

    evaluating the personalized diagnostic model against the one or more trend shifts detected for the one or more parameters, to diagnose a fault associated with the particular device.

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