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example.m
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%% SSI-DATA APPLICATION
% Numerical implementation:
% Daniele Kauctz Monteiro (2022)
% danielekauctz@hotmail.com
% References:
% CARINI, M. R. (2021). Identificação das Propriedades Dinâmicas de Estruturas submetidas a Ações Ambientais.
...Doctoral Thesis, Federal University of Rio Grande do Sul, Brazil.
% PEETERS, B. (2000). System Identification and Damage Detection in Civil Engineering.
...PhD thesis, Katholieke Universiteit Leuven, Belgium.
% Parameters:
% y: output matrix
% i: half the number of block rows of the output data Hankel matrix (i x l > no)
% no: state-space model order
% sf: sampling frequency
% FN, Phi, ZT: natural frequencies, mode shapes and damping ratios of the system
%% Carini's Acceleration signal
yk = importdata('yk.txt');
%% SSI-DATA
% i x l > no
no = 20;
i = 10;
sf = 25;
[FN,PHI,ZT] = SSI_DATA(yk,i,no,sf);
ordem = 1:size(FN,2);
%% Stabilization Diagram
close all
tol = [0.01 0.01 0.10]; % [fn zt phi]
x_lim = [0.01 10]; % frequency range
[stbf,stbz,stbm] = stabilization(FN,ZT,PHI,tol,ordem,x_lim);