抄録
This paper describes an active control system intended to minimize the vertical vibrations transferred from the vehicle seat to human body. This system had been evaluated by the human model which had head, body, thigh, shin upper arm and fore arm. However, the vibration of the road surface is transmitted to the occupant of a vehicle while under the influence of resonance in the vehicle. Traditional vibration model has been input from the vibration under the seat directly. If it takes into account the effects on the behavior of the vehicle occupants. Therefore, Occupant behavior may be considered to be more complex. Therefore, we developed a vibration model of passenger-seat-steering wheel-pedals system. The body has six parts such as head, chest, thigh, shin, upper arm and lower arm. And vehicle has three parts such as sprung mass, front unsprung mass and rear sprung mass. We have investigated the reduction rate of the vertical vibrations on the head, shin and lower arm which are important parts on operation while driving. From the results, it is shown that the validity of this model and that relationships between the reduction rates and the mechanical properties of the each seat cushion for frequency band.
