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System and method for predicting mechanical failure of a motor

  • US 9,845,012 B2
  • Filed: 06/29/2012
  • Issued: 12/19/2017
  • Est. Priority Date: 07/06/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • monitoring first characteristics of an electrical signal supplied to a traction motor of a vehicle during a first detection window, the first characteristics representing a first motor electrical signature for the traction motor, wherein the first characteristics are monitored as measurements of electric current supplied to the traction motor prior to the electric current reaching the traction motor;

    deriving one or more signature values from a first mathematical model of the first motor electrical signature;

    predicting a mechanical failure of the traction motor based on the one or more signature values; and

    automatically generating a vehicle control signal for changing one or more of tractive effort or braking effort of the vehicle in response to predicting the mechanical failure.

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