Greiser, Steffen und Grünhagen, Wolfgang von (2020) Suppression of Regressive Lead-Lag to Improve Roll Bandwidth in Helicopter Flight Control Systems. In: DLRK 2020. Deutscher Luft- und Raumfahrtkongress 2020, 2020-09-01 - 2020-09-03, Aachen, Germany.
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Kurzfassung
Helicopter flight has to be safe and the control of the helicopter has to fulfil specific requirements on static and dynamic stability. A typical design goal for the roll axis is to achieve a stable response with a roll bandwidth larger than approx. 2-3 rad/s for midsize rotorcraft. During the first phase of the EC135 ACT/FHS research flight control design, a low-damped roll oscillation at approx. 1.8 Hz or 12 rad/s was observed. This effect was interpreted as air resonance which was excited by the research flight control system. Two different approaches have been flight-tested to suppress this oscillation: an input filter and disturbance feed-forward. The paper presents the low-order equivalent model, the control system, and flight test results. Both approaches showed a good performance in flight while the disturbance feedforward achieves a slightly higher bandwidth and more phase margin
elib-URL des Eintrags: | https://elib.dlr.de/138382/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||
Titel: | Suppression of Regressive Lead-Lag to Improve Roll Bandwidth in Helicopter Flight Control Systems | ||||||||||||
Autoren: |
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Datum: | September 2020 | ||||||||||||
Erschienen in: | DLRK 2020 | ||||||||||||
Referierte Publikation: | Nein | ||||||||||||
Open Access: | Nein | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Nein | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Helicopter, Control System, Air Resonance, Roll Bandwidth, EC135 ACT/FHS | ||||||||||||
Veranstaltungstitel: | Deutscher Luft- und Raumfahrtkongress 2020 | ||||||||||||
Veranstaltungsort: | Aachen, Germany | ||||||||||||
Veranstaltungsart: | nationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 1 September 2020 | ||||||||||||
Veranstaltungsende: | 3 September 2020 | ||||||||||||
Veranstalter : | Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||
HGF - Programmthema: | Luftverkehrsmanagement und Flugbetrieb | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||
DLR - Forschungsgebiet: | L AO - Air Traffic Management and Operation | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Faktor Mensch und Sicherheit in der Luftfahrt (alt) | ||||||||||||
Standort: | Braunschweig | ||||||||||||
Institute & Einrichtungen: | Institut für Flugsystemtechnik > Hubschrauber | ||||||||||||
Hinterlegt von: | Grünhagen, Dr.-Ing. Wolfgang | ||||||||||||
Hinterlegt am: | 12 Jan 2021 15:22 | ||||||||||||
Letzte Änderung: | 24 Apr 2024 20:40 |
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