5Feldman M. Non-linear system vibration analysis using Hilbert transform-I: free vibration analysis method FREEV B [J]. Meehanieal Systems and Signal Processing, 1994, 8(2): 119-127.
6Shi Z Y, Law S S, Xu X. Identification of linear time- varying mdof dynamical systems from forced excitation using Hilbert transform and EMD method[J]. Journal of Sound and Vibration, 2009, 321: 572- 589.
7Liu K. Identification of linear time-varying systems[J]. Journal of Sound and Vibration, 1997, 206(4): 487-505.
8Ko W J, Huang C F. Extraction of structural system matrices from an identified state-space system using combined measurements of DVA [J]. Journal of Sound and Vibration, 2002, 249(5): 955-970.
9Amaratunga K, Williams J R, Qian S. Wavelet- galerkin solutions for one dimensional partial differential equation[J]. International Journal for Numerical Methods in Engineering, 1994, 37:2 703-2 716.
10Ghanem R. Romeo F. A wavelet-based approach for the identification of linear time-varying dynamical systems[J]. Journal of Sound and Vibration, 2000, 234 (4): 555-576.
