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Yaw stability control system

  • US 8,073,608 B2
  • Filed: 04/24/2009
  • Issued: 12/06/2011
  • Est. Priority Date: 04/25/2008
  • Status: Active Grant
First Claim
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1. A method for controlling a yaw stability control system for a vehicle having an electric power assisted steering system, the method comprising the steps of:

  • detecting understeer;

    determining a degree of understeer;

    comparing the degree of understeer to a predetermined threshold value;

    calculating a guidance torque;

    calculating a steering wheel angle modifier upon initiation of calculating a guidance torque;

    applying the guidance torque to the power assisted steering system;

    calculating a driver intended steering wheel angle using a measured steering wheel angle and the calculating steering wheel angle modifier;

    applying the driver intended steering wheel angle as an input for the yaw stability control system.

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