RT info:eu-repo/semantics/article
T1 Dynamic system identification by the frequency response matrix
A1 Cacho-Pérez, M.
K1 Dynamic system identification
K1 Residues and poles form
K1 Frequency response function (FRFs) rational approximation
K1 Frequency domain analysis
K1 Real and imaginary FRFs parts fitting
K1 Analytic complex functions residues
K1 1202.09 Funciones de Una Variable Compleja
K1 1202.16 Transformadas Integrales
K1 3305.32 Ingeniería de Estructuras
K1 3305.33 Resistencia de Estructuras
K1 2205.09 Mecánica de Sólidos
AB This work estimates the residues and poles of the dynamic system to express the terms of the frequency response matrix as the sum of simple fractions (each vibration mode contributes two terms). The starting point is the acceleration response at various points of the structure, it is integrated twice and an analysis is performed in the frequency domain. The measured vibration frequencies, damping factors, and residues are estimated by least squares fitting of the measured or experimental frequency response functions (FRFs). The damping of the structure or system can be proportional or general. The dynamic system is identified by relating the residues of the functions of the frequency response matrix (complex functions) with the residues measured from the outputs of the system excited by forces/inputs of impulse, sinusoidal, frequency sweep or other type.
PB Elsevier
SN 2352-0124
YR 2024
FD 2024-12
LK https://uvadoc.uva.es/handle/10324/72748
UL https://uvadoc.uva.es/handle/10324/72748
LA eng
NO Structures, Volume 70, 2024, 107761, ISSN 2352-0124
NO Producción Científica
DS UVaDOC
RD 22-dic-2024