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CLC number: U213

On-line Access: 2014-06-04

Received: 2013-05-12

Revision Accepted: 2014-02-20

Crosschecked: 2014-05-21

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Citations:  Bibtex RefMan EndNote GB/T7714

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

http://doi.org/10.1631/jzus.A1300163


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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journal="Journal of Zhejiang University Science A",
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pages="385-394",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1300163"
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%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
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%I Zhejiang University Press & Springer
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T1 - Measurements and analysis of track irregularities on high speed maglev lines
A1 - Jin Shi
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A1 - Ying-jie Wang
A1 - Yang Zhao
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VL - 15
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1300163


Abstract: 
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.

高速磁浮轨道不平顺测试及分析

研究目的:提出高速磁浮轨道不平顺处理方法,分析不平顺特征,拟合形成轨道谱,为线路空间维护提供参考。
创新要点:实现了对高速磁浮轨道不平顺的提取,确定了轨道谱参数。
研究方法:基于惯性基准法,运用数字信号处理方法实现对轨道不平顺的提取,采用最小二乘法拟合得到定子面和导向面七参数轨道谱。
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。

关键词:磁浮列车;轨道不平顺;功率谱;间隙

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

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