International Federation of Automatic Control
3rd IFAC SYMPOSIUM on SYSTEM, STRUCTURE and CONTROL

Foz do Iguassu, Brazil October 17th - 19th, 2007

Friday Afternoon

Session FA3: Parameter Estimation


Chair: Graham Goodwin - Australia
Co-chair: Walter Lages - Brazil
Room: Santiago
2007-10-19
From 13:30 to 15:30
Robust Identification of Transient Port Responses Using Time Domain Orthonormal Vector Fitting
D. Deschrijver, B. Haegeman, T. Dhaene
Contact: Dirk Deschrijver - Belgium
14:10-14:30
Abstract:
A robust technique is presented for parametric identification of linear time-invariant systems in the time domain. Based on a Sanathanan-Koerner iteration, the transfer function coefficients are calculated iteratively by minimizing a weighted linear cost function. The time-domain equivalent of the Muntz-Laguerre basis is used to improve the numerical conditioning of the associated system equations. It is shown that the method is computationally efficient, and able to fit highly dynamic responses. Copyright © 2007 IFAC.