Title :
On the use of orthogonal polynomials in high order frequency domain system identification and its application to modal parameter estimation
Author :
Rolain, Y. ; Pintelon, R. ; Xu, K.Q. ; Vold, H.
Author_Institution :
Vrije Univ., Brussels, Belgium
Abstract :
In this paper a maximum likelihood frequency domain identification technique is presented for the parametric transfer function of very high order linear time invariant systems. Through the use of orthogonal polynomials, the numerical stability of both the estimation and the calculation of derived quantities (zeros, poles) is obtained. Stochastical uncertainty bounds are provided for both estimated and derived quantities. The method will be used to perform the identification of modal analyses problems: a 50-mode simulated system and a 60-mode measured beam-structure
Keywords :
frequency-domain analysis; maximum likelihood estimation; parameter estimation; transfer functions; high-order frequency-domain system identification; maximum-likelihood frequency-domain identification; measured beam-structure; modal parameter estimation; numerical stability; orthogonal polynomials; parametric transfer function; poles; stochastical uncertainty bounds; very-high-order linear time-invariant systems; zeros; Analytical models; Frequency domain analysis; Maximum likelihood estimation; Modal analysis; Numerical stability; Performance evaluation; Poles and zeros; Polynomials; Time invariant systems; Transfer functions;
Conference_Titel :
Decision and Control, 1994., Proceedings of the 33rd IEEE Conference on
Conference_Location :
Lake Buena Vista, FL
Print_ISBN :
0-7803-1968-0
DOI :
10.1109/CDC.1994.411664
