Analysis of motion sensation of car drivers and its application to posture control device

Driver tilts his/her head to the direction of the curve center. Beside, it is pointed out that the head movement of the passenger is opposite to the driver. Moreover, it is known that the driver does not get carsickness comparing with the passenger. Therefore, we investigate the effect of the driver´s active head movement. We build the mathematical model of the motion sickness and simulate the severity of motion sickness using driver´s head movements measured in the real-car experiments. From the result, it is shown that the driver´s head movement has an effect to decrease the motion sickness. Then we proposed a novel posture control device based on the results. It is shown that the developed device changes the passengers head tilt toward the driver´s direction, which can decrease the motion sickness.