Design and testing of a co-rotating vibration excitation system

Angelos Filippatos, Tino Wollmann, Minh Nguyen, Pawel Kostka, Martin Dannemann, Albert Langkamp, Loic Salles, Maik Gude

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A vibration excitation system (VES) in a form of an active coupling is proposed, designed and manufactured. The system is equipped with a set of piezoelectric stack actuators uniformly distributed around the rotor axis and positioned parallel to each other. The actuator arrangement allows an axial displacement of the coupling halves as well as their rotation about any transverse axis. Through the application of the VES an aimed vibration excitation is realised in a co-rotating coordinate system, which enables a non-invasive and precise modal analysis of rotating components. As an example, the VES is applied for the characterisation of the structural dynamic behaviour of a generic steel rotor at different rotational speeds. The first results are promising for both stationary and rotating conditions.

Original languageEnglish
Article number92
JournalSensors (Switzerland)
Issue number1
Publication statusPublished - 2019
Externally publishedYes


  • Rotational testing
  • Rotor
  • Structural dynamic behaviour
  • Vibration excitation


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