可搬型加振器を用いた鉄道車両上下振動シミュレータの開発 : 第1報,定置加振試験による走行時の多入力加振スペクトルの推定(<特集>D & D 2007)

概要

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The authors are developing a vibration simulator, which consists of field-portable exciters (actuators) and data processing software, to estimate vertical vibration and riding quality of railway vehicles. One of the main characteristics of the vibration simulator is that the acceleration power spectral density (PSD) at arbitrary point on the carbody while running is synthesized numerically from measured data obtained when each axle box or each wheelset is excited individually. This paper focuses upon the data processing method of the simulator. A series of excitation tests for a commuter vehicle was carried out to confirm the basic concept to estimate the PSD by using the rolling stock testing plant as exciters. Some excitation methodologies and data processing formulae are compared among each other in this paper. It is clearly shown that the estimated PSDs well agree with actual PSDs. It is found out that the estimation gives high accurate results when acceleration values at only excited axle boxes are used in estimation analysis.
一般社団法人日本機械学会の論文
2008-05-25