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Complementary Use of Black-Box and Physics-Based techniques in Rotorcraft System identification

Seher-Weiß, Susanne and Wartmann, Johannes (2018) Complementary Use of Black-Box and Physics-Based techniques in Rotorcraft System identification. In: 44th European Rotorcraft Forum 2014. 44th European Rotorcraft Forum, 18.-21. Sep. 2018, Delft, Niederlande.

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Abstract

Accurate linear helicopter models are needed for control system development and simulation and can be determined by system identification when appropriate test data are available. Standard methods for rotorcraft system identification are the frequency domain maximum likelihood method and the frequency response method that are used to derive physics-based linear state-space models. But also the optimized predictor-based subspace identification method (PBSIDopt), a time domain system identification method that yields linear black-box state-space models, has been successfully applied to rotorcraft data. As both methods have their respective strengths and weaknesses, it was tried to combine both techniques. The paper demonstrates the successful complementary use of physics-based frequency domain methods and the black-box PBSIDopt method in the areas of database requirements, accuracy metrics, and model structure development using flight test data of DLR's ACT/FHS research rotorcraft.

Item URL in elib:https://elib.dlr.de/121690/
Document Type:Conference or Workshop Item (Speech)
Title:Complementary Use of Black-Box and Physics-Based techniques in Rotorcraft System identification
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Seher-Weiß, SusanneFT-HUBhttps://orcid.org/0000-0002-6913-7764
Wartmann, JohannesJohannes.Wartmann (at) dlr.dehttps://orcid.org/0000-0002-9766-3454
Date:18 September 2018
Journal or Publication Title:44th European Rotorcraft Forum 2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:System identification, method, rotorcraft, black-box
Event Title:44th European Rotorcraft Forum
Event Location:Delft, Niederlande
Event Type:international Conference
Event Dates:18.-21. Sep. 2018
Organizer:ERF
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: Seher-Weiß, Susanne
Deposited On:15 Oct 2018 14:56
Last Modified:15 Oct 2018 14:56

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