Structural Parameter Identification in the Frequency Domain: The Use of Overdetermined Systems

[+] Author and Article Information
S. G. Braun, Y. M. Ram

Technion - Israel Institute of Technology, Haifa, Israel

J. Dyn. Sys., Meas., Control 109(2), 120-123 (Jun 01, 1987) (4 pages) doi:10.1115/1.3143827 History: Received January 27, 1987; Online July 21, 2009


This paper deals with the fitting of a rational function to an experimentally determined frequency domain transfer function. Examples show that the use of overdetermined fitted systems improve the identification in noisy situations. A method is presented, enabling the determination of the number of zero/poles of the system, and the relation to the rank of the matrix used in a least square identification method.

Copyright © 1987 by ASME
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