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Method for enhancing vehicle stability

  • US 5,948,027 A
  • Filed: 09/06/1996
  • Issued: 09/07/1999
  • Est. Priority Date: 09/06/1996
  • Status: Expired due to Term
First Claim
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1. A method of enhancing vehicle response and stability in a vehicle having an active roll control system with front and rear suspensions each including an anti-roll bar, and the control system being capable of providing an anti-roll moment on the vehicle which may be proportioned between the front and rear anti-roll bars, the method comprising:

  • a) determining the vehicle speed;

    b) determining the steering wheel angle;

    c) calculating the desired vehicle yaw rate based upon the determined speed and steering wheel angle;

    d) sensing the actual yaw rate;

    e) comparing the desired yaw rate to the actual yaw rate;

    f) increasing the percentage of the anti-roll moment provided to the rear anti-roll bar if the actual yaw rate is less than the desired yaw rate, thereby decreasing understeer, increasing yaw rate, and enhancing vehicle response; and

    g) increasing the percentage of the anti-roll moment provided to the front anti-roll bar if the actual yaw rate is greater than the desired yaw rate, thereby increasing understeer, decreasing yaw rate, and enhancing vehicle stability.

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