Research on the rapid diagnosis method for hunting of high-speed trains  

作　　者：Wanru Xie Yixin Zhao Gang Zhao Fei Yang Zilong Wei Jinzhao Liu 

机构地区：[1]Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing,China [2]Infrastructure Inspection Center,China Railway Corp,Beijing,China [3]Infrastructure Inspection Institute,China Academy of Railway Sciences Corporation Limited,Beijing,China

出　　处：《Railway Sciences》2025年第1期1-21,共21页铁道科学(英文)

基　　金：support from the funds of National Natural Science Foundation of China(52308473);China Academy of Railway Science Corporation Limited(2022YJ192)are gratefully acknowledged。

摘　　要：Purpose–High-speed turnouts are more complex in structure and thus may cause abnormal vibration of highspeed train car body,affecting driving safety and passenger riding experience.Therefore,it is necessary to analyze the data characteristics of continuous hunting of high-speed trains passing through turnouts and propose a diagnostic method for engineering applications.Design/methodology/approach–First,Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(CEEMDAN)is performed to determine the first characteristic component of the car body’s lateral acceleration.Then,the Short-Time Fourier Transform(STFT)is performed to calculate the marginal spectra.Finally,the presence of a continuous hunting problem is determined based on the results of the comparison calculations and diagnostic thresholds.To improve computational efficiency,permutation entropy(PE)is used as a fast indicator to identify turnouts with potential problems.Findings–Under continuous hunting conditions,the PE is less than 0.90;the ratio of the maximum peak value of the signal component to the original signal peak value exceeded 0.7,and there is an energy band in the STFT time-frequency map,which corresponds to a frequency distribution range of 1–2 Hz.Originality/value–The research results have revealed the lateral vibration characteristics of the high-speed train’s car body during continuous hunting when passing through turnouts.On this basis,an effective diagnostic method has been proposed.With a focus on practical engineering applications,a rapid screening index for identifying potential issues has been proposed,significantly enhancing the efficiency of diagnostic processes.

关 键 词：High-speed railway Periodic hunting Rapid diagnosis CEEMDAN STFT Permutation entropy 

分 类 号：TN9[电子电信—信息与通信工程]