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Automatic Mode Estimation for SSI
Along with the new revolutionary feature called
Crystal Clear
SSI ARTeMIS Extractor Pro features Automatic Mode Estimation for SSI.
Automatic Mode Estimation for SSI searches the stable modes in the SSI
Stabilization Diagram. All stable modes of all estimated models of all test
setups are included in the search, and the result is modal estimates of natural
frequencies, damping ratios and modes shapes of high accuracy. The estimates are
presented in terms of both mean values and standard deviations as seen below.
Even in the case of closely spaced modes
and multiple test setups, the Automatic Mode Estimation for SSI
works, as shown below very three extremely close modes are estimated
correctly for a project with 4 test setups.
Crystal Clear SSI analysis of the Heritage Court Building in Vancouver, BC,
Canada. Picture shows the automatic selection of modes of
each of the four setups as well as the automatic linkage across the
setups. As seen the automatic estimation works even in the case of
closely space modes.
The Automatic Mode Estimation for SSI
feature works with the traditional SSI algorithms. However, the
optimal performance is obtained by combining it with the new
Crystal Clear SSI
algorithms giving extremely clear stabilization diagrams. No matter
if the new features are in use or not, there are some technical
benefits of SSI compared to other commercially available parametric
model estimators working in the frequency domain and relying on the
estimation of half-power spectral densities.
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