Article (Scientific journals)
Video analysis of nonlinear systems with extended Kalman filtering for modal identification
Lo Feudo, Stefania; Dion, Jean-Luc; Renaud, Franck et al.
2023In Nonlinear Dynamics, 111 (14), p. 13263 - 13277
Peer reviewed
 

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Keywords :
Extended Kalman filter; Nonlinear vibrations; Video analysis; Experimental modal analysis; Mechanical Engineering
Abstract :
[en] This study proposes to carry out the experimental modal analysis of nonlinear systems under the assumption of almost invariant modal shapes by coupling video analysis from a high speed/resolution camera and extended Kalman filtering. A clamped-clamped beam with a local nonlinearity is considered, and its vibrations are measured by detecting and tracking a large set of (virtual) sensors bonded to the beam outer surface. Specific image processing and video tracking techniques are employed and detailed herein. Then, the instantaneous natural frequencies and modal amplitudes are identified by means of a data assimilation method based on extended Kalman and modal filters. Finally, the proposed method of identification is assessed using a numerical example possessing 3 degrees of freedom and a strong nonlinearity. The performance and limits of the identification process are discussed.
Disciplines :
Mechanical engineering
Author, co-author :
Lo Feudo, Stefania ;  QUARTZ Laboratory (EA7393), Vibrations, Acoustics, Mechanical Structures and Shapes, ISAE-Supméca, Saint-Ouen-sur-Seine, France
Dion, Jean-Luc ;  QUARTZ Laboratory (EA7393), Vibrations, Acoustics, Mechanical Structures and Shapes, ISAE-Supméca, Saint-Ouen-sur-Seine, France
Renaud, Franck ;  QUARTZ Laboratory (EA7393), Vibrations, Acoustics, Mechanical Structures and Shapes, ISAE-Supméca, Saint-Ouen-sur-Seine, France
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Noël, Jean-Philippe;  Mechanical Engineering Department, KU Leuven, Leuven, Belgium
Language :
English
Title :
Video analysis of nonlinear systems with extended Kalman filtering for modal identification
Publication date :
July 2023
Journal title :
Nonlinear Dynamics
ISSN :
0924-090X
eISSN :
1573-269X
Publisher :
Springer Science and Business Media B.V.
Volume :
111
Issue :
14
Pages :
13263 - 13277
Peer reviewed :
Peer reviewed
Funding text :
We thank Tilàn Dossogne (University of Liège) and Reza Babajanivalashedi (ISAE-Supméca) for their time and help during the experimental campaign.
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since 11 October 2024

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