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Method and apparatus for controlling a vehicle computer model

  • US 7,689,393 B2
  • Filed: 12/09/2003
  • Issued: 03/30/2010
  • Est. Priority Date: 12/09/2003
  • Status: Active Grant
First Claim
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1. A simulation system for simulating operation of an automotive vehicle, particularly operating in at least one period of intentionally induced oversteer, said simulation system comprising:

  • an input device for providing vehicle information and path information;

    a controller coupled to said input device and operable to simulate said automotive vehicle using a vehicle computer model, wherein said controller is programmed todetermine a rear side slip angle of said vehicle computer model;

    determine an initial steering wheel angle that is input to said vehicle computer model;

    when said rear side slip angle is determined to be greater than a predetermined threshold, determine a look ahead scale factor and increase the distance of a look ahead point substantially on or near a driver intended vehicle path as a function of said look ahead scale factor;

    determine a new steering wheel angle, which is input to said vehicle computer model at a time later than said initial steering wheel angle, based on the difference between said driver intended vehicle path and said look ahead point on or near said driver intended vehicle path;

    operate said vehicle computer model with said initial steering wheel angle when the difference is less than a second predetermined threshold or said new steering wheel angle when the difference is more than a second predetermined threshold; and

    generate an output in response to said vehicle computer model and said initial steering wheel angle or said new steering wheel angle.

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