1416 2次ばね系の油圧ダンパの減衰力制御による車体上下振動の低減(車輪踏面形状・振動制御,SS1:高度化,高速化,第18回交通・物流部門大会(TRANSLOG2009))

概要

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This study presents a vibration suppression system by controlling the damping force of vertical oil dampers mounted parallel with air springs for improving vertical riding quality in railway vehicles. The controller controls four variable coefficient vertical dampers based on skyhook control theory by using accelerometers attached on cabin floor. The developed system including the dampers has been installed onto an existing vehicle, and a running test for its validation has been carried out in a service line. The damping control has reduced significantly the vibration of the natural frequency of the car body. This reducing effect has been higher than the effect obtained with passive dampers. The riding quality L_r during the control has been improved by 1.3 dB compared to without the control, in a section with rail joints which causes remarkable vibration. The result demonstrates this system is effective in improving vertical riding quality.
2009-12-02