Title :
Effects of modal density in system identification using the Hilbert transform
Author :
Gabriele, Stefano ; Spina, Davide ; Iezzi, Fabrizio ; Valente, Claudio
Author_Institution :
Dept. of Archit., Univ. “Roma Tre” of Rome, Rome, Italy
Abstract :
The paper aims to review and deepen the effects of the modal density in the dynamical identification with the Complex Plane Representation (CPR) method that is based on the Hilbert transform of the motion response of mechanical systems. It is demonstrated that the strong accuracy in the identification of the modal parameters with the CPR method can be somewhat corrupted for high modal densities. Theoretical and numerical solutions are used to analyze the problem and validate the CPR results.
Keywords :
Hilbert transforms; mechanical products; vibrations; CPR method; Hilbert transforms; complex plane representation method; mechanical system motion response; modal density; system identification; Complexity theory; Damping; Equations; Mechanical systems; Noise; Resonant frequency; Shape; Hilbert transform; complex modes; dynamical systems; modal density; modal identification;
Conference_Titel :
Environmental Energy and Structural Monitoring Systems (EESMS), 2014 IEEE Workshop on
Conference_Location :
Naples
Print_ISBN :
978-1-4799-4989-2
DOI :
10.1109/EESMS.2014.6923263
