Patent ID: 8170749
Filing Date: 2012-05-01
Classification: B60G

Abstract:
1. A roll rigidity control apparatus for a vehicle which includes roll rigidity changing means at a front wheel position or a rear wheel position, the apparatus comprising: lateral acceleration acquisition means for acquiring a lateral acceleration of the vehicle at the centroid thereof; yaw rate acquisition means for acquiring a yaw rate of the vehicle about the centroid; lateral acceleration computation means for computing a lateral acceleration of the vehicle at the front wheel position or the rear wheel position on the basis of the lateral acceleration, the yaw rate, a yaw inertial moment of the vehicle, a vehicle speed coefficient based on a vehicle speed, and the rear wheel position or the front wheel position, respectively, measured along a front-rear direction of the vehicle; and control means for computing a target anti-roll moment at the front wheel position or the rear wheel position on the basis of the lateral acceleration of the vehicle at the front wheel position or the rear wheel position, correspondingly, and controlling the roll rigidity changing means at the front wheel position or the rear wheel position on the basis of the target anti-roll moment at the front wheel position or the rear wheel position, correspondingly wherein the vehicle speed coefficient is between 0 and 1, the vehicle speed coefficient equals 0 when the vehicle speed is less than a first reference value, the vehicle speed coefficient equals 1 when the vehicle speed is greater than a second reference value, and the vehicle speed coefficient increases with the vehicle speed when the vehicle speed is greater than the first reference value and less than the second reference value.