Open AccessTime-Frequency Analysis of Horizontal Vibration for Vehicle-Track System Based on Hilbert-Huang Transform
Author(s) -
Zai-Wei Li,
Songliang Lian,
You He
Publication year - 2013
Publication title -
advances in mechanical engineering/advances in mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.318
H-Index - 40
eISSN - 1687-8140
pISSN - 1687-8132
DOI - 10.1155/2013/954102
Subject(s) - hilbert–huang transform , acceleration , vibration , acoustics , track (disk drive) , accelerometer , hilbert transform , normal mode , mode (computer interface) , waveform , spectral density , structural engineering , energy (signal processing) , engineering , mathematics , physics , computer science , mechanical engineering , telecommunications , classical mechanics , radar , statistics , operating system , quantum mechanics
Relationship between track alignment irregularity and car body horizontal vibration acceleration is analyzed by using Hilbert-Huang Transform (HHT). Actual measured alignment irregularity and car body horizontal vibration acceleration are decomposed by empirical mode decomposition (EMD) to obtain intrinsic mode function (IMF). By comparing IMF waveform and energy spectrum of the irregularity and vibration acceleration, there is the definitive correspondence of IMFs, and the adverse section of irregularity can be identified from car body horizontal vibration acceleration. Finally, regression analysis is taken for measured sample of track inspection car on Beijing-Guangzhou line; the quantitative relationship between track alignment irregularity and car body horizontal vibration acceleration is established with a wavelength between 1.5 m and 50 m