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LANE KEEPING ASSIST DEVICE AND LANE KEEPING ASSIST METHOD

  • US 20110015850A1
  • Filed: 12/10/2008
  • Published: 01/20/2011
  • Est. Priority Date: 03/04/2008
  • Status: Active Grant
First Claim
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1. A lane keeping assist device comprising:

  • a lateral direction displacement obtaining means which obtains information concerning a lateral direction displacement of a vehicle with respect to a traffic lane;

    a lateral direction displacement threshold value setting means which sets a lateral direction displacement threshold value on the traffic lane where the vehicle travels;

    a first control amount calculating means which calculates a first control amount that decreases a lateral displacement deviation of the vehicle from the lateral direction displacement threshold value;

    a second control amount calculating means which calculates a second control amount that decreases an angle deviation of a travelling direction of the vehicle with respect to the traffic lane; and

    a travelling direction controlling means which, when the vehicle passes across the lateral direction displacement threshold value from a center side of a width direction of the traffic lane, controls a turning angle or a turning torque or a braking/driving amount or a braking/driving force of a road wheel, on the basis of the second control amount at the traffic lane center side with respect to the lateral direction displacement threshold value and on the basis of at least the first control amount at an outer side of the width direction of the traffic lane with respect to the lateral direction displacement threshold value.

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