科研之友
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摘要
Current spectral analysis for evaluating the rail ride quality effectively is based on the sampling data at a uniform time interval, but the train is of fluctuation velocity in motion, which results in a non-uniform interval between consecutive sampling data. Therefore the accuracy of routine spectral analysis is in doubt when applying it in evaluating the rail ride quality. This paper presents a new way, namely, re-sampling with variable frequency to eliminate the influence of the train';s uneven velocity. Its feature is that there is no need for precision measurement of the train';s moving speed. Experiment results from the test-bed of rolling stock vibration show that it is valid.
- 出版日期2006
- 单位西南交通大学
