| 摘要 |
PROBLEM TO BE SOLVED: To ensure suppression of vehicle body vibration caused by a disturbance input even when a position of wheel center is varied from a designed position in a disturbance input traveling scene where a suspension is displaced.SOLUTION: A vehicle body damping control apparatus comprises an input conversion unit 204, a vehicle body vibration estimation unit 205, and a torque command value calculation unit 206. The input conversion unit 204 of the vehicle body damping control apparatus includes a suspension stroke calculation unit 302 and a vertical force conversion unit 303 which estimate a disturbance input on the basis of wheel speed fluctuation using a tire displacement linear characteristic linearly approximating a relation characteristic between a force-and-aft direction displacement and a vertical direction displacement with respect to a position of wheel center on the basis of a suspension geometry. A suspension geometry gain correction processing unit 321 is provided to correct, when the position of wheel center is varied from the designed position in a static state on a flat road, suspension geometry gains KgeoF and KgeoR which are inclination coefficients of the tire displacement linear characteristic in a direction to increase linear approximation. |
