Fan Shen

Nanjing University of Aeronautics & Astronautics, Nan-ching, Jiangsu, China

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Publications (3)1.04 Total impact

  • Min Zheng · Fan Shen ·
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    ABSTRACT: Modal identification methods based on the Hilbert Transform are applied to identify modal parameters of time-varying system using impulse response time histories. First, the response data are decomposed into modal responses through the empirical mode decomposition (EMD). Then, the Hilbert transform is applied to each modal response to obtain the instantaneous frequencies. The applications of the proposed methods are illustrated using a 3 degree-of-freedom (DOF) system with time-varying dynamic characteristics. Numerical simulation results demonstrate that the proposed system identification methods yield good results.
    Applied Mechanics and Materials 11/2012; 226-228:303-307. DOI:10.4028/ · 0.15 Impact Factor
  • Min Zheng · Fan Shen ·
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    ABSTRACT: Empirical Mode Decomposition(EMD) suffers some difficulties in separating dense frequencies. The Wavelet Packet Transform (WPT) and Singular-Value Decomposition (SVD) as signal preprocessors were used to decompose a simulated signal with dense frequency components and the performances of two signal preprocess technologies were compared in this paper. The results show that Singular-Value Decomposition (SVD) as preprocessor was better in separating dense frequencies than Wavelet Packet Transform (WPT).
    10/2011; 378-379:266-269. DOI:10.4028/
  • Min Zheng · Fan Shen · Yuping Dou · Xiaoyan Yan ·
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    ABSTRACT: In recent years, Empirical mode decomposition and Hilbert spectral analysis have been combined to identify system parameters. Singular-Value Decomposition is proposed as a signal preprocessing technique of Hilbert-Huang Transform to extract modal parameters for closely spaced modes and low-energy components. The proposed method is applied to a simulated airplane model built in Automatic Dynamic Analysis of Mechanical Systems software. The results demonstrate that the identified modal parameters are in good agreement with the baseline model.
    Acta Mechanica Sinica 12/2009; 25(6):883-888. DOI:10.1007/s10409-009-0289-8 · 0.89 Impact Factor

Publication Stats

9 Citations
1.04 Total Impact Points


  • 2009-2011
    • Nanjing University of Aeronautics & Astronautics
      • College of Aerospace Engineering
      Nan-ching, Jiangsu, China