改进希尔伯特-黄变换分析波磨对列车时频特征的影响

doi:10.3969/j.issn.0372-2112.2016.10.002

电子学报 ›› 2016, Vol. 44 ›› Issue (10): 2294-2299.DOI: 10.3969/j.issn.0372-2112.2016.10.002

改进希尔伯特-黄变换分析波磨对列车时频特征的影响

邓小军^1,2, 曹源³, 张玉琢³, 李强¹

1. 北京交通大学机械与电子控制工程学院, 北京 100044;
2. 南车青岛四方机车车辆股份有限公司, 山东青岛 266111;
3. 北京交通大学电子信息工程学院, 北京 100044

收稿日期:2016-03-26 修回日期:2016-05-24 出版日期:2016-10-25 发布日期:2016-10-25
通讯作者: 曹源
作者简介:邓小军,男,1971年出生,重庆人,南车青岛四方机车车辆股份有限公司教授级工程师,北京交通大学机械与电子控制工程学院博士研究生,研究方向为结构强度与可靠性;张玉琢,男,1990年出生,河南信阳人,北京交通大学电子信息工程学院博士研究生,研究方向为信号处理;李强,男,1963年出生,山西文水人,北京交通大学机械与电子控制工程学院教授,博士,博士生导师,研究方向为结构强度与可靠性.
基金资助:
国家科技支撑计划项目（No.2015BAG12B01）；国家自然科学基金（No.51305021，No.U1334211，No.U1534208）

Influence of Corrugation on Time-Frequency Characteristics of a Train Based on Improved Hilbert-Huang Transform

DENG Xiao-jun^1,2, CAO Yuan³, ZHANG Yu-zhuo³, LI Qiang¹

1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044 China;
2. CSR Qingdao Sifang Co. Ltd, Qingdao Shandong, 266111, China;
3. School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2016-03-26 Revised:2016-05-24 Online:2016-10-25 Published:2016-10-25

摘要/Abstract

摘要：

本文旨在研究钢轨波浪形磨损对列车时频特征的影响.建立了车辆/轨道空间耦合模型，模拟计算了钢轨短波、长波波磨激励下车辆系统的动力响应.将集成经验模态分解（Ensemble Empirical Mode Decomposition，EEMD）和正交希尔伯特变换（Normalized Hilbert Transform，NHT）应用于车辆/轨道耦合系统的振动信号分析中，分析了不同波深和波长的波磨对转向架动力响应时频特征的影响.结果表明：波磨会引起车辆系统振动响应的频率调制，频率振幅与平均频率之比可作为轮轨冲击的预警指标.

关键词: 波浪形磨损, 车辆轨道耦合动力学, 黄变换, 时频特征

Abstract:

The aim of this paper is to investigate the influence of rail corrugation on time-frequency characteristics of a train.A spatial coupling model of the vehicle-track system is presented,and dynamic response of the vehicle system under the track short wave and long wave corrugation stimulation is obtained.The Ensemble Empirical Mode Decomposition and Normalized Hilbert Transform are introduced to the vibration signal analysis of vehicle-track coupling system.Then the influence of different wavelength and wave depth of corrugation on time-frequency distribution of bogie response are analyzed.The simulation result indicate that corrugation can induce the frequency modulation of bogie response,the ratio of frequency amplitude to mean frequency can be used as an indicator of rail-wheel impact.

Key words: rail corrugation, vehicle-track coupling dynamics, Huang transform, time-frequency characteristics

中图分类号:

TN911.7

邓小军, 曹源, 张玉琢, 李强. 改进希尔伯特-黄变换分析波磨对列车时频特征的影响[J]. 电子学报, 2016, 44(10): 2294-2299.

DENG Xiao-jun, CAO Yuan, ZHANG Yu-zhuo, LI Qiang. Influence of Corrugation on Time-Frequency Characteristics of a Train Based on Improved Hilbert-Huang Transform[J]. Acta Electronica Sinica, 2016, 44(10): 2294-2299.

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改进希尔伯特-黄变换分析波磨对列车时频特征的影响

Influence of Corrugation on Time-Frequency Characteristics of a Train Based on Improved Hilbert-Huang Transform

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