| 摘要 |
PROBLEM TO BE SOLVED: To estimate a transverse skid angle of a vehicle body and a wheel of an automobile with high precision regardless of a road surface state. SOLUTION: A vehicle status quantity estimating apparatus is constituted of a vehicle movement detection means; a rear wheel lateral force arithmetic means, which calculates a rear wheel lateral force acting on a rear wheel from a yaw rate detected by a yaw rate detection means and lateral acceleration detected by a lateral acceleration detection means; a rear wheel lateral skid angle arithmetic means, which calculates a rear wheel lateral skid angle from the rear wheel lateral force and predetermined rear wheel tire characteristics; and a front wheel lateral skid angle conversion means, which converts the rear wheel lateral skid angle to a first front wheel lateral skid angle based on a two-wheel model of a vehicle. COPYRIGHT: (C)2009,JPO&INPIT
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