530 Vertical Vibration Suppression of Railway Vehicle by Damping Force Control of Axle Dampers and Air Springs

Abstract

In order to improve the riding comfort of railway vehicles, it becomes essential to suppress the vibration of the rigid mode of the carbody as well as the one of the vertical bending mode. Therefore, we propose a method to suppress these vibrations by using the damping force control systems of axle dampers and air springs; the first is applied for suppressing of the first mode bending vibration, the second is applied for suppressing of the rigid mode vibration. As the results, we show that the control method effectively reduces the power spectral density (PSD) of accelerations of the carbody floor.