Modal Identification from Ambient Responses Using Frequency Domain Decomposition

Rune Brincker, Lingmi Zhang, Palle Andersen

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

Resumé

In this paper a new frequency domain technique is introduced for the modal identification from ambient responses, i.e. in the case where the modal parameters must be estimated without knowing the input exciting the system. By its user friendliness the technique is closely related to the classical approach where the modal parameters are estimated by simple peak picking. However, by introducing a decomposition of the spectral density function matrix, the response can be separated into a set of single degree of freedom systems, each corresponding to an individual mode. By using this decomposition technique close modes can be identified with high accuracy even in the case of strong noise contamination of the signals.
OriginalsprogEngelsk
TitelProceedings of SPIE : The International Society for Optical Engineering
Publikationsdato2000
StatusUdgivet - 2000
Udgivet eksterntJa
BegivenhedThe International Society for Optical Engineering -
Varighed: 24. aug. 2010 → …

Konference

KonferenceThe International Society for Optical Engineering
Periode24/08/2010 → …

Fingeraftryk

Frequency response
Decomposition
Spectral density
Probability density function
Contamination

Citer dette

Brincker, R., Zhang, L., & Andersen, P. (2000). Modal Identification from Ambient Responses Using Frequency Domain Decomposition. I Proceedings of SPIE: The International Society for Optical Engineering
Brincker, Rune ; Zhang, Lingmi ; Andersen, Palle. / Modal Identification from Ambient Responses Using Frequency Domain Decomposition. Proceedings of SPIE: The International Society for Optical Engineering. 2000.
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title = "Modal Identification from Ambient Responses Using Frequency Domain Decomposition",
abstract = "In this paper a new frequency domain technique is introduced for the modal identification from ambient responses, i.e. in the case where the modal parameters must be estimated without knowing the input exciting the system. By its user friendliness the technique is closely related to the classical approach where the modal parameters are estimated by simple peak picking. However, by introducing a decomposition of the spectral density function matrix, the response can be separated into a set of single degree of freedom systems, each corresponding to an individual mode. By using this decomposition technique close modes can be identified with high accuracy even in the case of strong noise contamination of the signals.",
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Brincker, R, Zhang, L & Andersen, P 2000, Modal Identification from Ambient Responses Using Frequency Domain Decomposition. i Proceedings of SPIE: The International Society for Optical Engineering. The International Society for Optical Engineering, 24/08/2010.

Modal Identification from Ambient Responses Using Frequency Domain Decomposition. / Brincker, Rune; Zhang, Lingmi; Andersen, Palle.

Proceedings of SPIE: The International Society for Optical Engineering. 2000.

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

TY - GEN

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AU - Zhang, Lingmi

AU - Andersen, Palle

PY - 2000

Y1 - 2000

N2 - In this paper a new frequency domain technique is introduced for the modal identification from ambient responses, i.e. in the case where the modal parameters must be estimated without knowing the input exciting the system. By its user friendliness the technique is closely related to the classical approach where the modal parameters are estimated by simple peak picking. However, by introducing a decomposition of the spectral density function matrix, the response can be separated into a set of single degree of freedom systems, each corresponding to an individual mode. By using this decomposition technique close modes can be identified with high accuracy even in the case of strong noise contamination of the signals.

AB - In this paper a new frequency domain technique is introduced for the modal identification from ambient responses, i.e. in the case where the modal parameters must be estimated without knowing the input exciting the system. By its user friendliness the technique is closely related to the classical approach where the modal parameters are estimated by simple peak picking. However, by introducing a decomposition of the spectral density function matrix, the response can be separated into a set of single degree of freedom systems, each corresponding to an individual mode. By using this decomposition technique close modes can be identified with high accuracy even in the case of strong noise contamination of the signals.

M3 - Article in proceedings

BT - Proceedings of SPIE

ER -

Brincker R, Zhang L, Andersen P. Modal Identification from Ambient Responses Using Frequency Domain Decomposition. I Proceedings of SPIE: The International Society for Optical Engineering. 2000