Fragniere, Benjamin und Wartmann, Johannes (2015) Local Polynomial Method Frequency-Response Calculation for Rotorcraft Applications. In: AHS 71st Annual Forum. 71st AHS Annual Forum, 2015-05-05 - 2015-05-07, Virginia Beach, Virginia, USA.
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Kurzfassung
Frequency-response function calculation is an essential element in rotorcraft data analysis, especially for system identification,model validation and model analysis. This article analyzes the performance of a recently developed method for the calculation of frequency-response functions, called the local polynomial method (LPM), when applying it to rotorcraft systems. The local polynomial method is presented as an alternative to the methods that are based on segmenting and windowing the data and is particularly effective in reducing the leakage error. The performance of both methods is first compared based on simulated data from linear helicopter models in various conditions. The simulated data allows to separately investigate the influence of: signal-to-noise ratio, signal length, frequency range, type of excitation and input correlation. The conditions under which the local polynomial method is superior to the windowing methods are given. Finally, flight test data are used to validate the results observed in the simulations.
elib-URL des Eintrags: | https://elib.dlr.de/100626/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||
Titel: | Local Polynomial Method Frequency-Response Calculation for Rotorcraft Applications | ||||||||||||
Autoren: |
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Datum: | Mai 2015 | ||||||||||||
Erschienen in: | AHS 71st Annual Forum | ||||||||||||
Referierte Publikation: | Nein | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Nein | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Frequency-response calculation, Local Polynomial Method | ||||||||||||
Veranstaltungstitel: | 71st AHS Annual Forum | ||||||||||||
Veranstaltungsort: | Virginia Beach, Virginia, USA | ||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 5 Mai 2015 | ||||||||||||
Veranstaltungsende: | 7 Mai 2015 | ||||||||||||
Veranstalter : | American Helicopter Society International | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||
HGF - Programmthema: | Hubschrauber | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||
DLR - Forschungsgebiet: | L RR - Rotorcraft Research | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Der intelligente Drehflügler (alt) | ||||||||||||
Standort: | Braunschweig | ||||||||||||
Institute & Einrichtungen: | Institut für Flugsystemtechnik > Hubschrauber | ||||||||||||
Hinterlegt von: | Fragniere, Benjamin | ||||||||||||
Hinterlegt am: | 11 Jan 2016 11:18 | ||||||||||||
Letzte Änderung: | 24 Apr 2024 20:06 |
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