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On-line Access: 2014-06-04

Received: 2013-05-12

Revision Accepted: 2014-02-20

Crosschecked: 2014-05-21

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Journal of Zhejiang University SCIENCE A 2014 Vol.15 No.6 P.385-394


Measurements and analysis of track irregularities on high speed maglev lines*

Author(s):  Jin Shi1, Wen-shan Fang1, Ying-jie Wang1, Yang Zhao2

Affiliation(s):  1. Department of Road and Railway Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; more

Corresponding email(s):   jshi@bjtu.edu.cn

Key Words:  Maglev train, Track irregularity, Deviation, Power spectrum density (PSD), Air gap

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Jin Shi, Wen-shan Fang, Ying-jie Wang, Yang Zhao. Measurements and analysis of track irregularities on high speed maglev lines[J]. Journal of Zhejiang University Science A, 2014, 15(6): 385-394.

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author="Jin Shi, Wen-shan Fang, Ying-jie Wang, Yang Zhao",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Measurements and analysis of track irregularities on high speed maglev lines
%A Jin Shi
%A Wen-shan Fang
%A Ying-jie Wang
%A Yang Zhao
%J Journal of Zhejiang University SCIENCE A
%V 15
%N 6
%P 385-394
%@ 1673-565X
%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1300163

T1 - Measurements and analysis of track irregularities on high speed maglev lines
A1 - Jin Shi
A1 - Wen-shan Fang
A1 - Ying-jie Wang
A1 - Yang Zhao
J0 - Journal of Zhejiang University Science A
VL - 15
IS - 6
SP - 385
EP - 394
%@ 1673-565X
Y1 - 2014
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1300163

Track irregularities have an obvious effect on the running stability and ride quality of maglev trains traveling at high speeds. We developed a measurement principle and data processing method which were applied to the high speed maglev line operating. The method, which includes partial filtering, integration, resampling of signal, and a low pass Butterworth filter, was used to calculate the irregularities of the maglev line. The spectra of the sample space were evaluated. A 7-parameter power spectrum density (PSD) function of line irregularities was fitted, based on the measured data. Analysis of the results showed that the maglev stator plane irregularities were better than conventional railway vertical rail irregularities when the wavelength was 5–100 m, and worse when the wavelength was 1–5 m. The PSD of maglev guidance plane irregularities was similar to that of cross level GRSHL (German railway spectra of high irregularity) when the wavelength was 10–100 m. The irregularities were clearly worse than cross level rail irregularities in a conventional railway when the wavelength was 1–10 m. This suggests that short-wavelength track irregularities of a maglev line caused by deviation and inclination of the stator plane should be minimized by strictly controlling the machining error of functional components during construction and maintenance.


重要结论:定子面和导向面分别在5–100 m和10–100 m波长范围内平顺性状态较好,由功能件安装等引起的1–5 m和1–10 m波长范围内的偏差应严格控制。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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