Abstract

In this paper we propose an active knee bolster to defend passenger legs in vehicle collision. Although it is possible to decrease the load to the passenger legs in vehicle collision by using a passive knee bolster with an elast-plastic element, the active knee bolster may be adaptable to the various situations of the collisions. In order to suppress the contact force between the passenger knee and the knee bolster, Linear Quadratic Integral(LQI) control is applied. By carrying out simulations, it is verified that the active knee bolster is more effective than the passive knee bolster among wide range of collision speed.

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