Singularity detection using holder exponent [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2002. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators:: Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online:: www.osti.gov

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Summary:

A signal processing technique called Holder exponent is presented to detect the presence of a discontinuity and when the discontinuity occurs in a dynamic signal. Wavelet transforms are incorporated with the Holder exponent to capture the time varying nature of discontinuities, and a classification procedure is developed to quantify when changes in the Holder exponent are significant, The proposed Holder exponent analysis is applied to acceleration response of a mechanical system with a rattling internal part. The experimental results demonstrate the effectiveness of the Holder exponent for identifying certain types of events that introduce discontinuities into the measured dynamic response data.

Subject(s):

Inorganic, Organic, Physical And Analytical Chemistry

Note:

Published through SciTech Connect., 01/01/2002., "la-ur-02-6353", Submitted to: Proceedings of the US-Korea Workshop on Smart Infrastructural Systems, Pusan, South Korea, August 23-24, 2002., and Robertson, A. N.; Farrar, C. R.; Sohn, H.

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