This paper describes a modal parameter estimation algorithm that uses frequency response functions relative to several exciter locations in a simultaneous manner. Phase information between the exciter locations is used to separate close or multiple roots, and consistent estimates are given for modal parameters and eigenvectors. An experimental investigation of a structure with repeated roots is described. In the single exciter location case, this method reduces to the least squares complex exponential technique.
A Multi-Input Modal Estimation Algorithm for Mini-Computers
Sae Technical Papers
SAE International Congress and Exposition ; 1982
01.02.1982
Aufsatz (Konferenz)
Englisch
A multi-input modal estimation algorithm for mini-computers
Kraftfahrwesen | 1982
|Mini-Computers and Traffic Control
NTIS | 1970
|