An investigation of time efficiency in wavelet-based Markov parameter extraction methods

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This paper investigates the time efficiency of using a wavelet transform-based method to extract the impulse response characteristics of a structural dynamic system. Traditional time domain procedures utilize the measured disturbances and response histories of a system to develop a set of auto and cross correlation functions. Through deconvolution of these functions, or matrix inversion, the Markov parameters of the system may be found. By transforming these functions into a wavelet basis, the size of the problem to be solved can be reduced as well as the computation time decreased. Fourier transforms are also used in this capacity as they … continued below

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7 p.

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Robertson, A.N. & Park, K.C. July 1, 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 20 times. More information about this article can be viewed below.

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  • Robertson, A.N. Los Alamos National Lab., NM (United States). Engineering Sciences and Applications Div.
  • Park, K.C. Univ. of Colorado, Boulder, CO (United States). Center for Aerospace Structures

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This paper investigates the time efficiency of using a wavelet transform-based method to extract the impulse response characteristics of a structural dynamic system. Traditional time domain procedures utilize the measured disturbances and response histories of a system to develop a set of auto and cross correlation functions. Through deconvolution of these functions, or matrix inversion, the Markov parameters of the system may be found. By transforming these functions into a wavelet basis, the size of the problem to be solved can be reduced as well as the computation time decreased. Fourier transforms are also used in this capacity as they may increase the time efficiency even more, but at the cost of accuracy. This paper will therefore compare the time requirements associated with a time, wavelet, and Fourier-based method of Markov parameter extraction, as well as their relative accuracy in modeling the system.

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7 p.

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OSTI as DE98003465

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  • 39. AIAA/ASME/ASCE/ASH/ASC structures conference, Long Beach, CA (United States), 20-23 Apr 1998

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  • Other: DE98003465
  • Report No.: LA-UR--98-480
  • Report No.: CONF-980419--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 663213
  • Archival Resource Key: ark:/67531/metadc711063

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  • July 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • March 2, 2016, 1:16 p.m.

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Robertson, A.N. & Park, K.C. An investigation of time efficiency in wavelet-based Markov parameter extraction methods, article, July 1, 1998; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc711063/: accessed October 14, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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