Non-parametric Instantaneous FRF of a Class of Time-Varying Systems

John Lataire; Rik Pintelon

Abstract

Slowly time-varying systems can be informally seen as systems with slowly evolving instantaneous transfer functions. This poster proposes a definition of an instantaneous transfer function, based on 'frozen' models of time-varying systems. It is demonstrated how the use of multisines as excitation signals provide insight into the nature of the time variation by simple inspection of the resulting output spectrum. Furthermore, a non-parametric estimate of the evolving instantaneous FRF (Frequency Response Function) is extracted from data of a single experiment.

Original language	English
Title of host publication	European Research Network System Identification, ERNSI workshop, Vorau, Austria, September 30 to October 2, 2009
Publication status	Published - 30 Sep 2009
Event	Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden Duration: 21 Sep 2009 → 25 Sep 2009

Conference

Conference	Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet
Country/Territory	Sweden
City	Stockholm
Period	21/09/09 → 25/09/09

Keywords

non parametric
time-varying systems

Cite this

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title = "Non-parametric Instantaneous FRF of a Class of Time-Varying Systems",

abstract = "Slowly time-varying systems can be informally seen as systems with slowly evolving instantaneous transfer functions. This poster proposes a definition of an instantaneous transfer function, based on 'frozen' models of time-varying systems. It is demonstrated how the use of multisines as excitation signals provide insight into the nature of the time variation by simple inspection of the resulting output spectrum. Furthermore, a non-parametric estimate of the evolving instantaneous FRF (Frequency Response Function) is extracted from data of a single experiment.",

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author = "John Lataire and Rik Pintelon",

year = "2009",

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day = "30",

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booktitle = "European Research Network System Identification, ERNSI workshop, Vorau, Austria, September 30 to October 2, 2009",

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T1 - Non-parametric Instantaneous FRF of a Class of Time-Varying Systems

AU - Lataire, John

AU - Pintelon, Rik

PY - 2009/9/30

Y1 - 2009/9/30

N2 - Slowly time-varying systems can be informally seen as systems with slowly evolving instantaneous transfer functions. This poster proposes a definition of an instantaneous transfer function, based on 'frozen' models of time-varying systems. It is demonstrated how the use of multisines as excitation signals provide insight into the nature of the time variation by simple inspection of the resulting output spectrum. Furthermore, a non-parametric estimate of the evolving instantaneous FRF (Frequency Response Function) is extracted from data of a single experiment.

AB - Slowly time-varying systems can be informally seen as systems with slowly evolving instantaneous transfer functions. This poster proposes a definition of an instantaneous transfer function, based on 'frozen' models of time-varying systems. It is demonstrated how the use of multisines as excitation signals provide insight into the nature of the time variation by simple inspection of the resulting output spectrum. Furthermore, a non-parametric estimate of the evolving instantaneous FRF (Frequency Response Function) is extracted from data of a single experiment.

KW - non parametric

KW - time-varying systems

M3 - Meeting abstract (Book)

BT - European Research Network System Identification, ERNSI workshop, Vorau, Austria, September 30 to October 2, 2009

T2 - Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet

Y2 - 21 September 2009 through 25 September 2009

ER -

Non-parametric Instantaneous FRF of a Class of Time-Varying Systems

Abstract

Conference

Keywords

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Cite this