RAIL CORRUGATION MEASUREMENT BASED ON DFB FIBER LASER SENSORS ON HEAVY HAUL RAILWAY

被引：0

作者：

Huang, Wenzhu ^{[1
,2
]}

Du, Yanliang ^{[3
]}

Zhang, Wentao ^{[1
]}

Ma, Huaixiang ^{[2
]}

Li, Fang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China

[2] Shijiazhuang Tiedao Univ, Sch Mech Engn, Shijiazhuang 050043, Peoples R China

[3] Shijiazhuang Tiedao Univ, Key Lab Struct Hlth Monitoring & Control, Shijiazhuang 050043, Peoples R China

来源：

NEW TECHNOLOGIES OF RAILWAY ENGINEERING | 2012年

基金：

美国国家科学基金会;

关键词：

rail corrugation; fiber laser sensors; digital filtering technique; wavelet analysis;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

To meet the needs of rail corrugation measurement, this paper presents a rail corrugation measurement system based on distrubuted feedback (DFB) fiber laser sensors (FLs) which are highly sensitive, immune to electro-magnetic noise and installed on the bogie of the train. When the train passes the corrugated rail, the corrugation induced acceleration of the bogie will be detected by the FLs. An digital inertial algorithm based on digital filtering technique is proposed to accurately estimate the rail corrugation and wavelet analysis method is used to eliminate trend term in bogie acceleration signal. Field test is carried out on the Datong-Qinhuangdao Railway in north China. The test results of acceleration and rail corrugation recorded by FLs are in good agreement to those of rail inspection car, which shows that it's a practical method to use fiber laser sensors as corrugation detectors.

引用

页码：285 / +

页数：2

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