CUI Tao, SUN Jianfeng. An evaluation method for car-body hunting of railway vehicles based on peak count. [J]. Electric drive for locomotives (1):53-58(2022)
DOI:
CUI Tao, SUN Jianfeng. An evaluation method for car-body hunting of railway vehicles based on peak count. [J]. Electric drive for locomotives (1):53-58(2022) DOI: 10.13890/j.issn.1000-128X.2022.01.009.
An evaluation method for car-body hunting of railway vehicles based on peak count
The phenomenon of car-body hunting is widespread in railway vehicles and has become an important factor affecting passengers’ ride comfort. To better evaluate the level of car-body hunting in the daily operation of railway vehicles
on the basis of the original evaluation methodology
an evaluation method of car-body hunting was proposed on the basis of peak count. The car-body lateral acceleration was taken as the research object
and a statistical analysis was carried on for the peak value distribution of the acceleration. The influence of different vibration frequencies on the ride comfort was taken into account
simultaneously. Taking the measured vibration signals of a certain type of CRH as an example
the consistency of the evaluation results of these two methods has been calculated and compared. The analysis results show that the proposed method has a good consistency with the lateral Sperling index in the evaluation of car-body hunting
and it can effectively detect the phenomenon of car-body hunting and classify the level during the operation. The proposed method was verified by the measured data from EMU
it could also be promoted and applied to other railway vehicles with different running speeds.
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