Artículos de revistas
Identification of Mechanical Systems through Kautz Filter
Registro en:
Journal Of Vibration And Control. Sage Publications Ltd, v. 15, n. 6, n. 849, n. 865, 2009.
1077-5463
WOS:000266916600003
10.1177/1077546308091458
Autor
Da Silva, S
Dias, M
Lopes, V
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) This paper presents a novelty approach to estimate the impulse response function (IRF) in lightly damped structures by using classical covariance method. The contribution of the present paper is to employ a Kautz filter to reduce the number of terms in the identification process of a finite impulse response (FIR) model. The Kautz filter is an orthogonal function that includes complex pole pair. So, the method incorporates a priori knowledge into the process that is essential to reach better results and to minimize the number of coefficients in the FIR model. For this reason, the present approach can be classified as a kind of "grey-box" methodology. The numerical and experimental applications of the method confirmed that by considering a priori parametric information the problem can be determined more easily. Moreover, the procedure proposed increased the convergence speed, and, as a consequence the consuming computational cost is lower. 15 6 849 865 State University of Campinas (UNICAMP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)