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Identification and Selection of Rotorcraft Candidate Models to Predict Handling Qualities and Dynamic Stability

Wartmann, Johannes and Greiser, Steffen (2018) Identification and Selection of Rotorcraft Candidate Models to Predict Handling Qualities and Dynamic Stability. 44th European Rotorcraft Forum, 18.-20. Sept. 2018, Delft, The Netherlands.

Full text not available from this repository.

Abstract

Current frequency-domain system identification methods require an open-loop experiment design for data collection to identify one model of a vehicle. This makes open-loop system identification for unstable systems like rotorcrafts challenging. The optimized Predictor-Based Subspace Identification method also estimates accurate models from closed-loop data. In this paper, a parameter study is conducted to identify a set of bare airframe models of the ACT/FHS research rotorcraft using this subspace method. A selection method is introduced to chose appropriate candidate models from the identified set. The selected candidate models differ slightly in terms of the model invariants and are all a valid approximation of the rotocraft dynamics. Consequently, the selected candidate models can be used to predict the possible properties of the system and their uncertainties. Here, the candidate models are employed to estimate the dynamic stability and handling qualities of the ACT/FHS bare airframe and two control system of the ACT/FHS research rotorcraft.

Item URL in elib:https://elib.dlr.de/121879/
Document Type:Conference or Workshop Item (Speech)
Title:Identification and Selection of Rotorcraft Candidate Models to Predict Handling Qualities and Dynamic Stability
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wartmann, JohannesJohannes.Wartmann (at) dlr.dehttps://orcid.org/0000-0002-9766-3454
Greiser, Steffensteffen.greiser (at) dlr.deUNSPECIFIED
Date:18 September 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:System identification, subspace, rotorcraft, ACT/FHS, HQ, handling Qualities, dynamic stabilitiy
Event Title:44th European Rotorcraft Forum
Event Location:Delft, The Netherlands
Event Type:international Conference
Event Dates:18.-20. Sept. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Smart Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Wartmann, Johannes
Deposited On:27 Sep 2018 13:12
Last Modified:27 Sep 2018 13:12

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