Paper Title:
Extraction of Frequency-Variable Characteristics and Analysis of Modulation Mechanism under Periodic Excitation
  Abstract

Free vibration of sealed hydraulic cylinder under periodic excitation has remarkable unstationary characteristics, e.g. quick change, wide frequency range and complex modulation. Combining with wavelet transform, Wigner-Ville distribution and Hilbert-Hang transform, the pressure signal of the hydraulic cylinder is decomposed, the free vibration component is extracted and re-composed, the frequency modulation characteristic is extracted and identified, and the modulation mechanism is discussed. It is demonstrated by comparison that HHT theory is effective for feature extraction and modulation analysis.

  Info
Periodical
Chapter
Chapter 3: Functional Manufacturing and Information Technology
Edited by
Hun Guo, Taiyong Wang, Zeyu Weng, Weidong Jin, Shaoze Yan, Xuda Qin, Guofeng Wang, Qingjian Liu and Zijing Wang
Pages
279-283
DOI
10.4028/www.scientific.net/AMM.141.279
Citation
X. Q. Wang, Y. Zhao, S. Liang, S. H. Qian, "Extraction of Frequency-Variable Characteristics and Analysis of Modulation Mechanism under Periodic Excitation", Applied Mechanics and Materials, Vol. 141, pp. 279-283, 2012
Online since
November 2011
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Price
$32.00
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