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Device for controlling spin/driftout of vehicle compatibly with roll control

  • US 6,278,930 B1
  • Filed: 04/25/2000
  • Issued: 08/21/2001
  • Est. Priority Date: 06/01/1999
  • Status: Expired due to Term
First Claim
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1. A moving behavior control device for a vehicle having a vehicle body, front left, front right, rear left and rear right wheels suspended by the vehicle body, and a brake system for applying a controlled braking force to each of the wheels, the moving behavior control device comprising:

  • first means for calculating target braking forces to be applied to the respective wheels for stabilizing the vehicle against a turn instability thereof;

    second means for calculating target braking forces to be applied to the respective wheels for stabilizing the vehicle against a roll instability thereof;

    third means for calculating target overall braking forces to be applied to the respective wheels by integrating the target braking forces calculated by the first means and the target braking forces calculated by the second means with respect to the corresponding wheels;

    fourth means for operating the brake system so as to apply such braking forces to the respective wheels that conform to the target overall braking forces; and

    fifth means for detecting the vehicle running at a probability of rolling beyond a predetermined threshold roll;

    wherein the fourth means decrease the braking forces according to a first rate schedule by which the applied braking forces are decreased generally at a first rate according to an excess of the applied braking forces relative to the target overall braking forces when the fifth means do not detect the vehicle running at said probability and according to a second rate schedule by which the braking forces are lowered generally at a second rate generally smaller than the first rate according to an excess of the applied braking forces relative to the target overall braking forces when the fifth means detect the vehicle running at said probability.

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