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Sensor fault detection, isolation and accommodation

  • US 6,598,195 B1
  • Filed: 08/21/2000
  • Issued: 07/22/2003
  • Est. Priority Date: 08/21/2000
  • Status: Active Grant
First Claim
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1. A method of detecting sensor faults in a system, the method comprising the steps of:

  • generating a modeled sensor value of each actual sensor value as a function of a plurality of other sensors;

    computing an absolute value of a difference between the actual sensor value and the modeled sensor value;

    comparing the difference to a predetermined threshold; and

    declaring the sensor as faulted if the difference is greater than the predetermined threshold.

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