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Simulation of High Altitude Long Endurance Platforms Through Global System Identification

Ruiz Paez, Cristina (2017) Simulation of High Altitude Long Endurance Platforms Through Global System Identification. Bachelor's. DLR-Interner Bericht. DLR-IB-RM-OP-2017-116, 151 S.

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Abstract

The identification of dynamic systems, such as the case of an aircraft for control tunning, is a common practice in engineering. Nowadays several flight databases are used to carry it out, wind tunnel data or CFD. However, even involving a great deal of effort both economically and temporally, the validation of the model and therefore the applicability of the model is restricted to the area of the envelope where the flight tests have been gathered. This final bachelor thesis demonstrates how decoupled simulations of flight data from complete maneuvers, both linear and nonlinear, are able to support the local identification of the system, a great help in local system iden- tification (in the data collection area), and how they can greatly reduce the amount of required flight data. On the other hand, a new system identification scheme called global system ientification will be tested. Aerodynamic simulations based on the Vortex Lattice Method are proposed as the first approach in areas where flight data collection is not possible, allowing the extrapolation of the model to that area building correction factors. The validation of the simulations in the local area is carried out using the flight data for two different aircraft, and verification of the proposed scheme for global identification is performed by extrapolation in the known zone i.e. the model identified at a point of the envelope is corrected for another by the simulations (which in this case also exist flight data) and are verified with the flight data. A first approach to modeling, for example at high altitude, is proposed in the development phases of HALE platforms.

Item URL in elib:https://elib.dlr.de/113206/
Document Type:Monograph (DLR-Interner Bericht, Bachelor's)
Title:Simulation of High Altitude Long Endurance Platforms Through Global System Identification
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ruiz Paez, Cristinacristina.ruizpaez (at) uca.esUNSPECIFIED
Date:July 2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:151
Status:Published
Keywords:Simulation Tools, global system identification, aircraft, uav, correction model, aerodynamic database
Institution:Universidad de Cadiz
Department:Escuela Superior de Ingenieria
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Terrestrische Assistenz-Robotik
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (since 2013) > Analysis and Control of Advanced Robotic Systems
Deposited By: Muskardin, Tin
Deposited On:17 Jul 2017 17:48
Last Modified:17 Jul 2017 17:48

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