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A comparative study on the identification of the dynamical model of multi-mass electrical drives using wavelet transforms

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  • Khaled Nouri
  • Hichem Loussifi
  • Naceur Benhadj Braiek

Abstract

This paper deals with dynamical modelling and modal identification of a special class of electromechanical systems: the multi-mass electrical drives. The aim of the work is to investigate the usefulness and the performance of the continuous wavelet transform (CWT) for the estimation of modal parameters, such as damping ratios and natural frequencies of these electromechanical systems. For this investigation, two models of elastic drive systems are considered: the two-mass and the three-mass models. The modal analysis identification using CWT is compared to the Hilbert–Huang transform technique and evaluated in terms of accuracy and ability to estimate modal parameters with different inputs, aptitude to distinguish several modes especially in the case of closely spaced modes and resistance to noisy conditions. In view of the results of the study, the advantages and shortcomings of each technique are presented and discussed.

Suggested Citation

  • Khaled Nouri & Hichem Loussifi & Naceur Benhadj Braiek, 2014. "A comparative study on the identification of the dynamical model of multi-mass electrical drives using wavelet transforms," International Journal of Systems Science, Taylor & Francis Journals, vol. 45(11), pages 2223-2241, November.
    • Handle: RePEc:taf:tsysxx:v:45:y:2014:i:11:p:2223-2241
    DOI: 10.1080/00207721.2013.766772
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