Investigation of a simple dynamics model to simulate vehicle passenger’s body behavior

Abstract

Since the occupant is not negligibly light relative to the weight of the vehicle body, it is required to consider the occupant’s dynamic characteristics at the design stage. For that purpose, a model capable of simulating the physical behavior of the occupant during traveling is required. In this study, we first conduct random vibration test on humans to investigate the characteristics of body behavior. As a result, in the scope of this experiment, individual differences do not appear so much, and it is clear that there is no significant change whether or not the steering wheel is held. Next, based on the data obtained by the vibration test, we try to construct a simple dynamic model that can simulate the occupant’s body behavior. In this paper, we assume that human is approximated by a simple rigid link model, and that the body control model is also simple PD control. Then, by adjusting the parameters, it is confirmed that a model capable of simulating the approximate physical behavior of the occupant can be constructed. Finally we also examine to combine nonlinear PD control and deep learning as more sophisticated control scheme.