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Detecting program flow fault in torque security software for hybrid vehicle electric drive system

  • US 8,386,101 B2
  • Filed: 09/29/2008
  • Issued: 02/26/2013
  • Est. Priority Date: 11/07/2007
  • Status: Expired due to Fees
First Claim
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1. A diagnostic system for a hybrid vehicle, comprising:

  • a processor module that outputs a seed value; and

    a motor control module that controls torque output by an electric motor of said hybrid vehicle, that receives said seed value, that performs a number of computational steps based on said seed value, that increments a counter value each time one of said computational steps is performed, that generates a final key value as a result of said computational steps, that outputs said final key value to said processor module, and that outputs said counter value to said processor module.

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