小型アクティブマスダンパによる車体弾性振動の多モード制振効果

摘要

Complicated three dimensional vertical flexural vibrations tend to have influence on riding comfort in recent railway vehicle carbodies. A vibration control method using active mass dampers (AMDs) of reducing such vibrations was proposed by the authors and its feasibility has been verified using a commuter type test vehicle in their former studies. In this paper, three different tests using newly developed compact actuators as AMDs are described, i.e., an excitation test using a Shinkansen-type test vehicle in the rolling stock testing plant at RTRI, and running tests on a commercial line for a Shinkansen-train and a limited express train. As a result of those tests, vibration reduction effect on multi-modal flexural vibrations in the real running state is clearly shown.%AMDによる車体弹性振動の多モード制振のため，専用の小型AMDを新規に製作した。その装置を用いて，人が上下振動に比較的敏感とされる10Hz付近に固有振動数をもつ代表的な2つの弾性振動モード（BモードとDモード）を制振対象とし，鉄道総研の車両試験台における加振試験，新幹線と特急車両での本線走行試験を行った。