| 摘要 |
PROBLEM TO BE SOLVED: To determine a dynamic characteristic of a tire that can be realized at the time of designing the tire as its requisite characteristic. SOLUTION: Parameter values having characteristic curves of a tire longitudinal force, lateral force and self-aligning torque approximated by "Magic Formula" are applied to a vehicle model, their simulations are carried out to perform a performance evaluation. In this case, when the vehicle model does not fulfill a predetermined performance, the parameter values are corrected to perform the vehicle performance evaluation again and at the same time the tire performance curves defined by the corrected parameter values are calculated and the values of tire dynamics element parameters are calculated on the basis of a tire dynamics model in reference to the tire performance curves. The tire dynamics model is that in which a center position of a ground contact surface moves according to the generated longitudinal force when a slip ratio in a brake driving direction is given. In the case where the vehicle model fulfills the predetermined performance, the values of tire dynamics element parameters corresponding to the parameters are defined as tire requisite characteristics. COPYRIGHT: (C)2008,JPO&INPIT
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