Publication
Title
Estimation of nonparametric harmonic transfer functions for linear periodically time-varying systems using periodic excitations
Author
Abstract
In this paper a nonparametric estimation procedure is proposed in order to identify continuous (discrete)-time, linear periodically time-varying (LPTV) systems. Further, multisine excitations are applied onto a LPTV system such that the system transient effects will vanish completely when the system is operating in steady state. The key idea is to decompose a LPTV system into an (in) finite series of transfer functions, the so-called harmonic transfer functions (HTF). From an identification point of view, the parallel structure, which consists of a weighted sum of the HTF's, is truncated to a desirable order. A high quality estimate of the nonparametric HTF's with its uncertainty embedded in an errors-in-variables framework is then obtained from only one experiment; making use of methods, the so-called local polynomial method (LPM), that are recently developed for multivariable linear time invariant systems. The effectiveness of the LPM will be first pointed up through simulations before a real system will be identified. The methodology is then eventually demonstrated on a real-life periodically time-varying electronic system.
Language
English
Source (journal)
... IEEE International Instrumentation and Measurement Technology Conference. - Piscataway, NJ, 2008, currens
Source (book)
IEEE International Instrumentation and Measurement Technology Conference, (I2MTC), May 10-12, 2011, Hangzhou
Publication
New York, N.Y. : IEEE, 2011
ISBN
978-1-4244-7935-1
Volume/pages
(2011), p. 699-704
ISI
000297171900140
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 14.09.2015
Last edited 01.10.2017