Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration
Abnormal vibration signals of tramcar are mostly nonstationary and nonlinear signals. This study applied the Hilbert–Huang transform (HHT) to analyze abnormal vibration of the tramcar, aiming to overcome the limitations of some traditional time-frequency analysis methods, such as Fourier transform,...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2022/3226253 |
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| _version_ | 1832563461690753024 |
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| author | Yuanjin Ji Junwei Zeng Wenjing Sun |
| author_facet | Yuanjin Ji Junwei Zeng Wenjing Sun |
| author_sort | Yuanjin Ji |
| collection | DOAJ |
| description | Abnormal vibration signals of tramcar are mostly nonstationary and nonlinear signals. This study applied the Hilbert–Huang transform (HHT) to analyze abnormal vibration of the tramcar, aiming to overcome the limitations of some traditional time-frequency analysis methods, such as Fourier transform, in dealing with nonstationary and nonlinear signals. Additionally, to address mode aliasing produced during empirical mode decomposition (EMD) used in classical HHT, this study proposed to first use complete EMD with adaptive noise for the decomposition of original vibration data, then eliminate the trend-term components with the calculated correlation coefficients, and finally perform denoising on high-frequency noisy components using the wavelet threshold method. After weighted reconstruction using denoised high-frequency components and low-frequency information components, data processing was finally optimized via HHT. Taking a tramcar as an example, the Hilbert spectra of the vertical acceleration of axle box were plotted via HHT, and the time-instantaneous, frequency-instantaneous energy 3D relations were obtained for the location of impact points. Further, the vibration characteristics were analyzed and quality indexes were calculated in combination with the marginal spectra so as to judge the reasons for abnormal vibration and failure modes of the tramcar. The results revealed that the proposed method was feasible and effective in vibration feature extraction and vibration impact analysis for tramcars. |
| format | Article |
| id | doaj-art-e5ad3e8dcd6a48bb9d91533a150558e8 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-e5ad3e8dcd6a48bb9d91533a150558e82025-02-03T01:20:11ZengWileyShock and Vibration1875-92032022-01-01202210.1155/2022/3226253Research on Wheel-Rail Local Impact Identification Based on Axle Box AccelerationYuanjin Ji0Junwei Zeng1Wenjing Sun2Institute of Rail TransitInstitute of Rail TransitInstitute of Rail TransitAbnormal vibration signals of tramcar are mostly nonstationary and nonlinear signals. This study applied the Hilbert–Huang transform (HHT) to analyze abnormal vibration of the tramcar, aiming to overcome the limitations of some traditional time-frequency analysis methods, such as Fourier transform, in dealing with nonstationary and nonlinear signals. Additionally, to address mode aliasing produced during empirical mode decomposition (EMD) used in classical HHT, this study proposed to first use complete EMD with adaptive noise for the decomposition of original vibration data, then eliminate the trend-term components with the calculated correlation coefficients, and finally perform denoising on high-frequency noisy components using the wavelet threshold method. After weighted reconstruction using denoised high-frequency components and low-frequency information components, data processing was finally optimized via HHT. Taking a tramcar as an example, the Hilbert spectra of the vertical acceleration of axle box were plotted via HHT, and the time-instantaneous, frequency-instantaneous energy 3D relations were obtained for the location of impact points. Further, the vibration characteristics were analyzed and quality indexes were calculated in combination with the marginal spectra so as to judge the reasons for abnormal vibration and failure modes of the tramcar. The results revealed that the proposed method was feasible and effective in vibration feature extraction and vibration impact analysis for tramcars.http://dx.doi.org/10.1155/2022/3226253 |
| spellingShingle | Yuanjin Ji Junwei Zeng Wenjing Sun Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration Shock and Vibration |
| title | Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration |
| title_full | Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration |
| title_fullStr | Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration |
| title_full_unstemmed | Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration |
| title_short | Research on Wheel-Rail Local Impact Identification Based on Axle Box Acceleration |
| title_sort | research on wheel rail local impact identification based on axle box acceleration |
| url | http://dx.doi.org/10.1155/2022/3226253 |
| work_keys_str_mv | AT yuanjinji researchonwheelraillocalimpactidentificationbasedonaxleboxacceleration AT junweizeng researchonwheelraillocalimpactidentificationbasedonaxleboxacceleration AT wenjingsun researchonwheelraillocalimpactidentificationbasedonaxleboxacceleration |