American Journal of Mechanical Engineering
ISSN (Print): 2328-4102 ISSN (Online): 2328-4110 Website: Editor-in-chief: Kambiz Ebrahimi, Dr. SRINIVASA VENKATESHAPPA CHIKKOL
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American Journal of Mechanical Engineering. 2017, 5(6), 312-315
DOI: 10.12691/ajme-5-6-16
Open AccessArticle

Modal Analysis Using the Signal Processing Toolbox of Matlab 2017

Peter Pavelka1, , Róbert Huňady1 and Martin Kučinský1

1Technical university of Košice, Faculty of Mechanical Engineering, Letná 9, Košice, Slovakia

Pub. Date: December 15, 2017

Cite this paper:
Peter Pavelka, Róbert Huňady and Martin Kučinský. Modal Analysis Using the Signal Processing Toolbox of Matlab 2017. American Journal of Mechanical Engineering. 2017; 5(6):312-315. doi: 10.12691/ajme-5-6-16


The paper deals with determination of modal parameters by two software applications. Experimental modal analysis was performed by the commercial system Pulse® designed for vibration analysis of mechanical structures. The system was used to obtain excitation signals and corresponding response signals. The measurement data were subsequently processed in Pulse ReflexTM software and Matlab 2017, of which the signal processing toolbox provides the new functionalities specially aimed for modal analysis. The toolbox contains functions to calculate frequency response functions and to estimate modal parameters. The aim of the article is to compare the results achieved by both softwares when the first approach realized using commercial system is considered as reference. The subject of this work is to evaluate the validity of the obtained results and to point out the possibilities that the new Matlab toolbox provides.

modal parameters experimental modal analysis vibration analysis

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[1]  Zhi-Sai Ma, Li Liu, Si-Da Zhou, Di Jiang, Yuan-Yuan He, “Effects of Bolted Connection on Beam Structural Modal Parameters” in Topics in Dynamics of Bridges, Volume 3, Kluwer Academic Publishers.
[2]  Bilošova, A., Modal Testing, VŠB TU Ostrava, 2011.
[3]  Ewins D. J. Modal testing – Theory, practice and application. 2. edition, Wiley, (2000).
[4]  Matlab 2017 help.