| 摘要 |
<p>A wheel speed correction device for use in a vehicle corrects the change of the circumferencial wheel speed caused by (i) in the long-term, change in the real tire diameter; (ii) in the mid-term, differences in the paths of the left and right wheels followed when the vehicle turns; and (iii) in the short-term, abnormal slipping between the tire and road surface. The wheel speed correction device has a device (AVi) for measuring a wheel rotation angular speed of each wheel, a device (REF, WRCi) for correcting a coefficient representing a tire diameter for producing a corrected coefficient for each wheel, a device (WVi) for calculating, from the measured angular speed, a diameter-corrected wheel speed using the corrected coefficients, a device (REF, DIF, RTO, TCRi, TCAi) for obtaining a turning correction amount from a difference between diameter-corrected wheel speeds of left and right wheels; and a device (CWVi) for correcting the diameter-corrected wheel speed using the turning correction amount. <IMAGE></p> |
