SORENSEN, K. (1984). IMPROVED TECHNIQUES FOR DETERMINATION OF RESIDUES AND DAMPING FROM FREQUENCY AND IMPULSE RESPONSE CURVES. test, 1(1st Conference on Applied Mechanical Engineering.), 11-20. doi: 10.21608/amme.1984.48579
KAI V. SORENSEN. "IMPROVED TECHNIQUES FOR DETERMINATION OF RESIDUES AND DAMPING FROM FREQUENCY AND IMPULSE RESPONSE CURVES". test, 1, 1st Conference on Applied Mechanical Engineering., 1984, 11-20. doi: 10.21608/amme.1984.48579
SORENSEN, K. (1984). 'IMPROVED TECHNIQUES FOR DETERMINATION OF RESIDUES AND DAMPING FROM FREQUENCY AND IMPULSE RESPONSE CURVES', test, 1(1st Conference on Applied Mechanical Engineering.), pp. 11-20. doi: 10.21608/amme.1984.48579
SORENSEN, K. IMPROVED TECHNIQUES FOR DETERMINATION OF RESIDUES AND DAMPING FROM FREQUENCY AND IMPULSE RESPONSE CURVES. test, 1984; 1(1st Conference on Applied Mechanical Engineering.): 11-20. doi: 10.21608/amme.1984.48579

IMPROVED TECHNIQUES FOR DETERMINATION OF RESIDUES AND DAMPING FROM FREQUENCY AND IMPULSE RESPONSE CURVES

The International Conference on Applied Mechanics and Mechanical Engineering
Article 2, Volume 1, 1st Conference on Applied Mechanical Engineering., May 1984, Pages 11-20    PDF (1.92 M)
Document Type: Original Article
DOI: 10.21608/amme.1984.48579
Author
KAI V. SORENSEN
M. SC., Bruel & Kjr, Denmark.
Abstract
This paper describes the determination of modal parameters directly from
the frequency and impulse response curves, and discusses the factors ef-fecting the accuracy of the measurements. It summarizes the effects of noise, weighting functions, resolution bias and excitation methods.
A new technique, based on the Hilbert transform of the impulse response is described. The technique is used to obtain a large dynamic range of time
, signals on a logarithmic axis and is shown used for determination of damp-. ing from the envelope of the impulse response and for separation of modes in the time domain.
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