Abstract
Complicated three dimensional vertical elastic vibrations tend to have influence on riding quality in recent railway vehicle carbodies. We proposed a vibration reduction method using active mass dampers (AMDs) to reduce such vibrations and its feasibility has been confirmed. As a next step, we are trying to realize more practical AMD system with smaller and lighter actuators. This paper describes the excitation test using test vehicle in the rolling stock testing plant at RTRI to verify the effectiveness of the vibration control using the light AMDs with moving mass of 35kg and 36kg. The peaks corresponding to two target modes are reduced successfully when an AMD is applied in the all wheel simultaneous excitation test and two AMDs enable more effective vibration control. The root mean square (RMS) values of acceleration from 5Hz to 20Hz were reduced around floor center in the excitation tests simulated running corresponding to three type velocity.
