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Motion control device for vehicle

  • US 8,892,305 B2
  • Filed: 03/24/2010
  • Issued: 11/18/2014
  • Est. Priority Date: 04/15/2009
  • Status: Active Grant
First Claim
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1. A motion control device for a vehicle including an actual yaw rate obtaining means for obtaining an actual yaw rate of the vehicle and a braking means for applying a brake torque to a wheel of the vehicle, and maintaining a traveling stability of the vehicle by controlling the brake torque via the braking means on the basis of the actual yaw rate, the motion control device for the vehicle comprising:

  • a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle;

    a maximum steering angular velocity calculating means for continuously storing values of the steering angular velocity and calculating a maximum steering angular velocity on the basis of chronologically-ordered stored values of the steering angular velocity;

    a determining means for determining a reference lateral acceleration on the basis of the maximum steering angular velocity so that the greater the maximum steering angular velocity is, the smaller the reference lateral acceleration is;

    an actual lateral acceleration obtaining means for obtaining an actual lateral acceleration acting on the vehicle; and

    a preparatory control means for applying a preparatory brake torque for compensating responsiveness of the braking means to the wheel in a case where the actual lateral acceleration exceeds the reference lateral acceleration wherein the preparatory control means is configured to apply the preparatory brake torque before a main control means determines that braking is needed.

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