Output-only parameter identification of a colored-noise-driven Van-der-Pol oscillator: Thermoacoustic instabilities as an example

Open access
Date
2017-06-19Type
- Journal Article
Citations
Cited 19 times in
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Cited 28 times in
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Abstract
The problem of output-only parameter identification for nonlinear oscillators forced by colored noise is considered. In this context, it is often assumed that the forcing noise is white, since its actual spectral content is unknown. The impact of this white noise forcing assumption upon parameter identification is quantitatively analyzed. First, a Van der Pol oscillator forced by an Ornstein-Uhlenbeck process is considered. Second, the practical case of thermoacoustic limit cycles in combustion chambers with turbulence-induced forcing is investigated. It is shown that in both cases, the system parameters are accurately identified if time signals are appropriately band-pass filtered around the oscillator eigenfrequency. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000164758Publication status
publishedExternal links
Journal / series
Physical Review EVolume
Pages / Article No.
Publisher
American Physical Society (APS)Subject
Nonlinear dynamics; Stochastic process; Combustion; Bifurcation; Engineering; IdentificationOrganisational unit
09471 - Noiray, Nicolas / Noiray, Nicolas
Funding
160579 - Tomorrow's Sequential Combustion Technologies for Low Emissions and High Fuel Flexibility (SNF)
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Show all metadata
Citations
Cited 19 times in
Web of Science
Cited 28 times in
Scopus
ETH Bibliography
yes
Altmetrics