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System Identification from GVT and Taxiing of an Unmanned Aerial Vehicle
Technical Paper
2013-01-2190
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The modal parameters of an aircraft structure are currently estimated from ground vibration tests (GVT). These tests are carried out on ground in order to estimate the frequency response functions first and then the modal parameters. Such estimates require one or more shakers to excite the structure together with simultaneous measurements of both the input and the output signals. Recent developments in operational modal analysis allowed such modal identification from the measurements of the output responses only, provided that the unmeasurable excitation is practically a white noise stochastic input in the frequency range of interest and is randomly exciting the different parts of the structure. In this paper the effects of the different test setup on the modal parameter estimates will be presented. Both input-output based experimental modal analysis and operational modal analysis are performed on an Unmanned Aerial Vehicle, the Clarkson University Golden Eagle. The modal parameters estimated from the standard ground vibration test are compared with the ones achieved by using the engine induced vibrations as means of excitation while the UAV is taxiing.
Authors
Citation
Coppotelli, G., Grappasonni, C., Arras, M., Valyou, D. et al., "System Identification from GVT and Taxiing of an Unmanned Aerial Vehicle," SAE Technical Paper 2013-01-2190, 2013, https://doi.org/10.4271/2013-01-2190.Also In
References
- Friswell M. I. , Mottershead J. E. Finite Element Model Updating in Structural Dynamics Kluwer Academic Publishers London 1995
- Sidhu J , Ewins D. J. Correlation of Finite Element and Modal Test Studies of a Practical Structure Proceedings of 2nd International Modal Analysis Conference 1984 756 762
- Lallement G. and Piranda J. Localisation Methods for Parameter Updating of Finite Element Models in Elastodynamics Proceedings of 8th International Modal Analysis Conference 1990 579 585
- Coppotelli G , Crema L. Balis 2006 Quality Control of Space Mission Composite Elements by Dynamic Measurements Rivista Italiana Di Compositi E Nanotecnologie 1 1 7 1826-4697
- Coppotelli G. , Di Conza R. , Mastroddi F. , Pascual R. , Caponero M.A. 2004 Damage Identification in Composite Plates by Dynamic Displacement Measurements International Conference On Noise And Vibration Engineering 417 432 Leuven, B Sas P; Demunck M 9073802822 Leuven, Belgium 20 22 September
- Van Overschee P. , De Moor B. 1996 Subspace Identification for Linear Systems Kluver Academic Publisher
- Juang , J.N. 1994 Applied System Identification Prentice Hall Englewood Cliffs, New Jersey
- Brincker R. , Zhang L. , Andersen P. Modal Identification from Ambient Responses Using Frequency Domain Decomposition XVIII IMAC S. Antonio, TX, (USA) 2000
- Agneni A. , Crema L. Balis , Coppotelli G. Time and Frequency Domain Model Parameter Estimation by Output Only Functions Proceedings of International Forum on Aeroelasticity and Structural Dynamics Amsterdam, NL 2003
- Hermans L. , Van der Auweraer H. Modal Testing and Analysis of Structures under Operational Conditions: Industrial Applications Mechanical Systems & Signal Processing 13 2 193 216 1999
- Hermans L. , Van der Auweraer H. , Coppens P. , Mathieu L. Modal Parameter Extraction from In-Operation Data XV IMAC Orlando 531 539 1996
- Hermans L. , Van der Auweraer H. , Hatami A. , Cooper J.E. , Uhl T. , Lisowski W. , Wasilak A. In Flight Modal Testing and Analysis of a Helicopter XVII IMAC 80 86 1999
- Agneni A. , Crema L. Balis , Coppotelli G. 2010 Output-Only Analysis of Structures with Closely Spaced Modes Mechanical System and Signal Processing. Special Issue: Operational Modal Analysis 24 5 July 1240 1249
- De Vries G. Sondage des Systemes Vibrantes par Masses Additionelles La Recherche Aeronatique, No. 30 Paris 47 49 1952
- Deweer J. , Dierckx B. Obtaining Scaled Modal Model of Panel Type Structures Using Acoustic Excitation XVII IMAC 2042 2048 1999
- Brinker R. , Andersen P. A Way of Getting Scaled Mode Shapes in Output Only Modal Testing Proceedings of XXI International Modal Analysis Conference Kissimmee, FL, USA 2003
- Coppotelli G. Identification of Frequency Response Functions by “Output-Only” Experimental Data Proceedings of XVII Associazione Italiana di Aeronautica e Astronautica Rome, ITALY 2003
- Coppotelli G. , Di Vincenzo F.G. , Mastroddi F. Aeroelastic System Identification of a Flying UAV in Operative Conditions Proc. of the International Forum on Aeroelasticity and Structural Dynamics Seattle, WA June 21 25 2009
- Coppotelli , G. , Balis Crema , L. Output-Only Modal Analysis in a Ground Vibration Test of a YAK-112 UAV Proc. of the International Forum on Aeroelasticity and Structural Dynamics, paper No. IFASD-2009-039 22 24 June 2009
- Coppotelli , G. , Grappasonni C. NIMA - Natural Input Modal Analysis - user guide Department of Mechanical and Aerospace Engineering report
- Robinson E.A. , Silva M.T. Digital Signal Processing and Time Series Analysis San Francisco, CA, (USA) 1978
- Heylen W. , Lammens S. , SAS P. Modal Analysis Theory and Testing Leuven 1994
- KAMMER D. C. Sensor placement for on-orbit modal identification and correlation of large space structures 1991 JOURNAL OF GUIDANCE, CONTROL AND DYNAMICS 251 259