Default Detection in a Back-to-Back Planetary Gearbox Through Current and Vibration Signals

  • Safa BoudhraaEmail author
  • Alfonso Fernández del Rincón
  • Fakher Chaari
  • Mohamed Haddar
  • Fernando Viadero Rueda
Conference paper
Part of the Applied Condition Monitoring book series (ACM, volume 15)


Until the last century, vibration analyses have been the most used method in monitoring the rotating machinery. But nowadays the electromechanical interaction in machinery is being the new scientific trend, mainly for its accuracy and facility.

Several research papers have shown that investigations done on the motor can be used to describe the machines dynamic behaviour and give a deep overview of any anomaly.

Within this context, this work reports the impact of an introduced pitting in the sun of one of the gearboxes of a back-to-back planetary gearbox configuration on the stator current signal. The gearbox monitoring was investigated through analysing the stator current measured experimentally by clamp meter.

Later, the results presented in the frequency spectrum are obtained using Fast Fourier Transform (FFT) to distinguish the frequency of the defect and its harmonics besides to the mesh frequency which highlight the electromechanical coupling.

Finally, the stator current signals were followed by the spectrum of acceleration signals. These signals were registered using an accelerometer mounted on the fixed ring in order to validate results foreseen in the current spectrum.


Back-to-back configuration Stator current Planetary gear Stationary condition Pitting defect Vibration signals 



This work has been supported by project DPI2017-85390-P funded by the Spanish Ministry of Economy, Industry and Competitiveness and project PredictEA funded by SODERCAN, S.A. and the FEDER operative program.

Acknowledgment also to both the University of Cantabria and the University of Sfax.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Safa Boudhraa
    • 1
    • 2
    Email author
  • Alfonso Fernández del Rincón
    • 2
  • Fakher Chaari
    • 1
  • Mohamed Haddar
    • 1
  • Fernando Viadero Rueda
    • 2
  1. 1.Laboratory of Mechanics, Modelling and Production (LA2MP)National School of Engineers of SfaxSfaxTunisia
  2. 2.Department of Structural and Mechanical Engineering, Faculty of Industrial and Telecommunications EngineeringUniversity of CantabriaSantanderSpain

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