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METHOD AND APPARATUS FOR ON-BOARD/OFF-BOARD FAULT DETECTION

  • US 20140222281A1
  • Filed: 02/05/2013
  • Published: 08/07/2014
  • Est. Priority Date: 02/05/2013
  • Status: Active Grant
First Claim
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1. A method for monitoring a subsystem of a subject vehicle, comprising:

  • in an off-board environment, executing a controller-based scheme comprising;

    determining a plurality of residuals based upon expected and observed states of parameters associated with operation of the subsystem;

    determining a subsystem operating signature based upon the residuals;

    employing the subsystem operating signature to isolate a subsystem fault; and

    communicating the subsystem fault to an on-board controller of the subject vehicle.

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