차량이 정지할 때 발생하는 저크 모션 = Analysis of Jerk Motion of a Car When It Stops

다국어 초록 (Multilingual Abstract)

Suppression of vibrations of a car is important for driving safety and comfort. To suppress the vibrations, suspension systems are provided for most of cars. The suspensions have been concerned with only the up-down motion(vertical motion) of cars and the back-forth motion of cars has been ignored. Actually the back-forth motion would be ignored when a car is running. But just after a car stops with deceleration, the back-forth motion is activated and the driver feels more discomfort by the back-forth motion because of its higher frequency. In this study a vibrational model of a car has been suggested to consider the back-forth motion and the model parameters have been estimated by some experiments. Vibrational motions of a car when it stops with some constant decelerations have been simulated. Through the study it is verified that when a car stops with deceleration the back-forth motion occurs much larger than other up-down motion, which may raise necessity of a suspension device to suppress the back-forth motion.