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We present an analysis of a two-plane automatic balancing device for rigid rotors. Ball bearings, which are free to travel around a race, are used to eliminate imbalance due to shaft eccentricity or misalignment. Here we consider the effect that asymmetries such as support anisotropy have on the auto-balancing process. Stability diagrams show that the device is robust to the considered asymmetries when the rotation speeds are supercritical and the mass imbalance is small.
Original languageEnglish
Publication statusPublished - 2008

Bibliographical note

Additional information: A paper submitted to the 6th ENOC-2008 Conference, organised by EUROMECH (European Mechanics Society), to be held June 30 — July 4, 2008, Saint Petersburg, Russia.

Sponsorship: EPSRC, Rolls-Royce plc.


  • control of oscillations
  • applications
  • nonlinear systems


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