[1] Wang Xiaonong, Huang Jingyu,. Updating method of a high-speed maglev guideway modelbased on wavelet transform [J]. Journal of Southeast University (English Edition), 2022, 38 (2): 171-177. [doi:10.3969/j.issn.1003-7985.2022.02.009]

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Updating method of a high-speed maglev guideway modelbased on wavelet transform()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

38

Issue:

2022 2

Page:

171-177

Research Field:

Traffic and Transportation Engineering

Publishing date:

2022-06-20

Info

Title:

Updating method of a high-speed maglev guideway modelbased on wavelet transform

Author(s):

Wang Xiaonong;  Huang Jingyu

¹ National Maglev Transportation Engineering R& D Center, Tongji University, Shanghai 201804, China
² Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China

Keywords:

maglev system;  guideway;  wavelet transform;  maximum slope method

PACS:

U491.1

DOI:

10.3969/j.issn.1003-7985.2022.02.009

Abstract:

The structure of a high-speed maglev guideway is taken as the research object. With the aim of identifying the inconsistency of modal parameters between the simulation model and the actual model, and based on the 600 km/h high-speed maglev vehicle and the high-speed maglev test line, the arrangement of sensors and the vibration acceleration data collection of the 12.384 m concrete guideway were conducted. The modal parameters were identified from the guideway response signal using wavelet transform, after which the wavelet ridge was extracted by using the maximum slope method. Next, the vibration modes and frequency parameters of the interaction vibration characteristics of the high-speed maglev guideway and 600 km/h maglev vehicle were analyzed. The updating objective function for the finite element model of the guideway was established, and the initial guideway finite element model was modified and updated by repeatedly iterating the parameters. In doing so, the model structure of the high-speed maglev guideway was obtained, which is consistent with the actual structure. The accuracy of the updated guideway model in the calculation of the dynamic response was verified by combining this with the vehicle-guideway coupling dynamic model of the high-speed maglev system with 18 degrees of freedom. The research results reveal that the model update method based on the wavelet transform and the maximum slope method has the characteristics of high accuracy and fast recognition speed. This can effectively obtain an accurate guideway model that ensures the correctness of the vehicle-guideway coupling dynamic analysis and calculation while meeting the parameters of the measured structure model. This method is also suitable for updating other structural models of high-speed maglev systems.

References:

[1] Yau J D, Yang Y B. Vibration of a suspension bridge installed with a water pipeline and subjected to moving trains [J]. Engineering Structures, 2008, 30(3):632-642. DOI: 10. 1016/j. engstruct.2007.05.006.
[2] Yuen K V, Kuok S C. Ambient interference in long-term monitoring of buildings [J]. Engineering Structures, 2010, 32(8):2379-2386. DOI:10.1016/j.engstruct.2010.04.012.
[3] Ren W X, Chen H B. Finite element model updating in structural dynamics by using the response surface method [J]. Engineering Structures, 2010, 32(8):2455-2465. DOI: 10. 1016 /j.engstruct.2010.04.019.
[4] Fernández-García V, Marcos E, Fernández-Guisuraga J M, et al. Multiple endmember spectral mixture analysis(MESMA)applied to the study of habitat diversity in the fine-grained landscapes of the cantabrian mountains [J]. Remote Sensing, 2021, 13(5):979. DOI: 10.3390/rs13050979.
[5] Zhou X.Automatic detection of short-term atrial fibrillation segments based on frequency slice wavelet transform and machine learning techniques [J]. Sensors, 2021, 21(16):5302. DOI:10.3390 /s21165302.
[6] Pasin D, Cawley A, Bidny S, et al. Current applications of high-resolution mass spectrometry for the analysis of new psychoactive substances: A critical review[J]. Analytical and Bioanalytical Chemistry, 2017, 409(25):5821-5836. DOI: 10.1007/ s00216- 017- 0441-4.
[7] Deighan A J, Watts D R. Ground-roll suppression using the wavelet transform [J]. Geophysics, 2012, 62(6):1896-1903. DOI: 10.1190/1.1444290.
[8] Karami K, Fatehi P, Yazdani A. On-line system identification of structures using wavelet Hilbert transform and sparse component analysis [J]. Computer-Aided Civil and Infrastructure Engineering, 2020, 35:870-886. DOI: 10.1111/mice.12552.
[9] Cheng J. Research on wavelet ridge extraction algorithm and application [D]. Dalian:Dalian University of technology, 2014.(in Chinese)
[10] Liu L, Ren W X, Wang C, et al. Extraction of wavelet ridges and instantaneous frequencies of non-stationary signals based on the maximum slope method [J]. Engineering Mechanics, 2018, 35(2): 30-37, 46.(in Chinese)
[11] Zhang L, Huang J Y. Stiffness of coupling connection and bearing support for high-speed maglev guideways [J]. Journal of Bridge Engineering, 2018, 23(9):04018064. DOI:10.1061/(ASCE)BE.1943-5592.0001284.
[12] Zhang L, Huang J Y. Dynamic interaction analysis of the high-speed maglev vehicle/guideway system based on a field measurement and model updating method [J]. Engineering Structures, 2019, 180:1-17.DOI: 10.1016/j.engstruct.2018.11.031.

Memo

Memo:

Biographies: Wang Xiaonong(1993—), male, Ph.D. candidate; Huang Jingyu(corresponding author), male, doctor, professor, huangjingyu@tongji.edu.cn.
Foundation items: The National 13th Five-Year Science and Technology Support Program of China(No. 2016YFB1200602).
Citation: Wang Xiaonong, Huang Jingyu. Updating method of a high-speed maglev guideway model based on wavelet transform[J].Journal of Southeast University(English Edition), 2022, 38(2):171-177.DOI:10.3969/j.issn.1003-7985.2022.02.009.

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