基于FBG和EMD的悬挂式永磁磁浮轨道厢梁应力检测技术研究

doi:10.3969/j.issn.1673-4440.2023.08.011

铁路通信信号工程技术 ›› 2023, Vol. 20 ›› Issue (8): 52-58.DOI: 10.3969/j.issn.1673-4440.2023.08.011

基于FBG和EMD的悬挂式永磁磁浮轨道厢梁应力检测技术研究

贺航宇^1，2，王岁儿^1，2，吴春晓^1，2，王晟^1，2，李擎^1，2

1．北京全路通信信号研究设计院集团有限公司，北京 100070；
2．先进轨道交通工业互联网北京市工程研究中心，北京 100070

收稿日期:2023-04-12 修回日期:2023-08-10 出版日期:2023-08-25 发布日期:2023-08-25
作者简介:贺航宇（1981—），男，高级工程师，硕士，主要研究方向：铁路信号，邮箱：hehangyu@crscd.com.cn。
基金资助:
国家重点研发计划资助项目（2022YFB4300600）

Research on Stress Detection Technology for Suspended Permanent-magnet Maglev Track Box Girder Based on FBG and EMD

He Hangyu^{1, 2}, Wang Suier^{1, 2}, Wu Chunxiao^{1, 2}, Wang Sheng^{1, 2}, Li Qing^{1, 2}

1. CRSC Research & Design Institute Group Co., Ltd., Beijing 100070, China;
2. Advanced Rail Transit Industrial Internet Beijing Engineering Research Center, Beijing 100070, Chin

Received:2023-04-12 Revised:2023-08-10 Online:2023-08-25 Published:2023-08-25

摘要/Abstract

摘要： 提出一种基于经验模态分解方法（EMD）的悬挂式永磁磁浮轨道厢梁光纤布拉格光栅（FBG）应力检测技术，用于检测过车时轨道厢梁应力，检测应力是否在安全范围内，保证行车安全性和平稳性。考虑到强磁场以及电磁干扰影响，采用轨上无电的FBG光栅传感应力检测方案，在上/下导向轮行径位置处分别布置一个测试点。FBG测试点受低频挠曲应力和高频导向轮应力双重作用，采用EMD方法分离两种应力，实验结果表明过车应力测试结果符合预期，可以有效确保轨道厢梁健康以及车辆的行驶安全。

关键词: 悬挂式永磁磁悬浮轨道交通, 经验模态分解方法（EMD）, 光纤布拉格光栅（FBG）, 应力检测

Abstract: This paper proposes a Fiber Bragg Grating (FBG) stress detection technology based on Empirical Mode Decomposition (EMD) for suspended permanent magnet maglev box girder, which is used to detect the stress of the track box girder when the vehicle passes through, check whether the stress is within the safe range, and ensure the operation safety and stability of vehicles.Considering the inﬂ uence of strong magnetic ﬁ eld and electromagnetic interference, the FBG grating sensing stress
detection scheme without electricity on the track is adopted, and a test point is respectively arranged at the travel position of the upper and lower guide wheels. The FBG test point is subject to both low-frequency flexure stress and high-frequency guide wheel stress, and the EMD method is used to separate the two stresses. The experimental results show that the test results of vehicle passing stress in line with expectations. The stress detection technology for track box girder described in this paper can eﬀectively ensure the health of track box girder and the operation safety of vehicles.

Key words: suspended permanent-magnet maglev rail transit, Empirical Mode Decomposition (EMD), Fiber Bragg Grating (FBG), stress detection

中图分类号:

U237

贺航宇, 王岁儿, 吴春晓, 王晟, 李擎. 基于FBG和EMD的悬挂式永磁磁浮轨道厢梁应力检测技术研究[J]. 铁路通信信号工程技术, 2023, 20(8): 52-58.

He Hangyu, Wang Suier, Wu Chunxiao, Wang Sheng, Li Qing. Research on Stress Detection Technology for Suspended Permanent-magnet Maglev Track Box Girder Based on FBG and EMD[J]. Railway Signalling & Communication Engineering, 2023, 20(8): 52-58.

图/表 8

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基于FBG和EMD的悬挂式永磁磁浮轨道厢梁应力检测技术研究

Research on Stress Detection Technology for Suspended Permanent-magnet Maglev Track Box Girder Based on FBG and EMD

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