NEHRP Clearinghouse

Title
Comparison between Transfer Function and Modal Minimization Methods for System Identification.
File
PB87234688.pdf
Author(s)
Beck, R. T.; Beck, J. L.
Source
National Science Foundation, Washington, DC. Directorate for Engineering., November 1985, 72 p.
Identifying Number(s)
EERL-85-06
Abstract
The reliability of two methods of structural identification is assessed employing noise-contaminated data. The statistical properties of the results of the transfer function approach and those of the modal minimization technique are compared, at different levels of noise, with the exact values of the modal parameters being estimated. Comparison indicates that the modal minimization is a far superior technique for structural parameter estimation using linear models.
Keywords
Ground motion; Ten degrees of freedom; Buildings; Earthquake engineering; Damping; Structural vibration; Comparison; Modal response; System identification; Optimization; Resonant frequency; Mathematical models; Transfer functions; Oscillations; Parameter estimation