Abstract
This paper presents control system design for occupant lower extremity protection in vehicle frontal collision by using a reduced-order dynamical model. Physical parameters of the reduced-order dynamical model are estimated from a simulation result of a three-dimensional dynamical simulator with a passive knee bolster. An active knee bolster is used to protect occupant lower extremities. The control system of the active knee bolster follows a reference signal of the contact force between the knee and the instrument panel. The protective control system with the active knee bolster is effective for reducing the femur load, verified by using three-dimensional multi body simulator.
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