System and method of analyzing vibrations and identifying...

Details System and method of analyzing vibrations and identifying... System and method of analyzing vibrations and identifying...

2008-03-18

2008-03-18

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C073S570000

Reexamination Certificate

active

11251004

ABSTRACT:
An apparatus, computer program product and method of analyzing structures. Intrinsic Mode Functions (IMFs) are extracted from the data and the most energetic IMF is selected. A spline is fit to the envelope for the selected IMF. The spline derivative is determined. A stability spectrum is developed by separating the positive and negative results into two different spectra representing stable (positive) and unstable (negative) damping factors. The stability spectrum and the non-linearity indicator are applied to the data to isolate unstable vibrations.

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Kizhner et al., On the Hilbert-Huang Transform Data Processing System, Mar. 6-13, 2004, Aerospace Conference, vol. 3, pp. 1961-1979.

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