Abstract
A lightweight of carbody for high speed brings about fall of flexural rigidity. So vertical vibration of a lightweight high speed railway vehicle makes worse the ride comfort of passengers. This paper aims at reducing such vibration, especially the 1st mode bending vibration of carbody, with the active suspension system using the proposed method of designing an vibration control system. The controller was designed by applying the H-infinity control theory. The numerical simulation results show that the ride comfort of passengers are greatly improved by the active suspension.
