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Vehicle posture control apparatus

  • US 6,622,073 B2
  • Filed: 10/24/2001
  • Issued: 09/16/2003
  • Est. Priority Date: 10/24/2000
  • Status: Active Grant
First Claim
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1. A vehicle posture control apparatus which controls posture of the vehicle in a yawing direction by independently controlling brakes of the vehicle'"'"'s wheels, the control apparatus comprising:

  • yaw rate detection means for detecting an actual yaw rate developed in the vehicle;

    target yaw rate setting means for setting a target yaw rate of the vehicle; and

    control means for judging an oversteering tendency based on the actual yawing rate and the target yawing rate, and for independently controlling brakes of each wheel;

    wherein the control means feedback controls to supply a brake pressure to turning outer wheels according to the deviation between the actual yaw rate and the target yaw rate when the oversteering tendency is stronger than a first preset reference value, and feedforward controls to supply a first predetermined brake pressure to the turning outer wheels when the oversteering tendency is not stronger than the first preset reference value and stronger than a second preset reference value, the first predetermined brake pressure being set to a degree that a driver does not sense intervention of the control.

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