Abstract

This paper investigates the improvement of front tire grip margin by using Direct Yaw-moment Control (DYC) which is designed from the viewpoint of tire force usage. The micro-scale electric vehicle 'NOVEL' is equipped with two in-wheel-motors at rear axle and their motor torques can be controlled independently to achieve the DYC. In this paper, the DYC, which control objective is determined as Neutral-Steer(NS) characteristics, is designed with the application of yaw moment following control. Finally, the effect of the DYC on improvement of front tire grip margin is proved by NOVEL on J-turn test.

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