Title
Estimation of nonparametric harmonic transfer functions for linear periodically time-varying systems using periodic excitations Estimation of nonparametric harmonic transfer functions for linear periodically time-varying systems using periodic excitations
Author
Faculty/Department
Faculty of Applied Engineering Sciences
Publication type
conferenceObject
Publication
New York, N.Y. :IEEE, [*]
Subject
Engineering sciences. Technology
Source (book)
IEEE International Instrumentation and Measurement Technology Conference, (I2MTC), May 10-12, 2011, Hangzhou
ISSN
1091-5281
ISBN - Hoofdstuk
978-1-4244-7935-1
ISI
000297171900140
Carrier
E
Target language
English (eng)
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.
E-info
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000297171900140&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000297171900140&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000297171900140&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848