Publication

Magnetic Bearing Reaction Wheel Micro-vibration Signature Prediction

Yves Perriard, Douglas Martins Araujo, Leopoldo Rossini, Guzmán Borque Gallego
2019
Conference Papers

Abstract

This article presents an analytical micro-vibration model for magnetic bearing reaction wheels (MBRWs) based on a rotordynamics model combined with the active control loop. This model is validated employing a fullyactive Lorentz-type MBRW demonstrator and a multicomponent dynamometer capable of measuring the exported micro-vibrations. The results show an accurate description of the generated vibration by only considering the unbalance forces as excitation.

Official source

https://infoscience.epfl.ch/entities/publication/2ac3dace-6009-4943-b0ec-268deaed8b12

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Yves Perriard, Douglas Martins Araujo, Leopoldo Rossini, Guzmán Borque Gallego
2019
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2ac3dace-6009-4943-b0ec-268deaed8b12

About this result

Related concepts (15)

Vibration

Vibration () is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The oscillations may be periodic, such as the motion of a pendulum, or random, such as the movement of a tire on a gravel road. Vibration can be desirable: for example, the motion of a tuning fork, the reed in a woodwind instrument or harmonica, a mobile phone, or the cone of a loudspeaker. In many cases, however, vibration is undesirable, wasting energy and creating unwanted sound.

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Torsional vibration is the angular vibration of an object - commonly a shaft - along its axis of rotation. Torsional vibration is often a concern in power transmission systems using rotating shafts or couplings, where it can cause failures if not controlled. A second effect of torsional vibrations applies to passenger cars. Torsional vibrations can lead to seat vibrations or noise at certain speeds. Both reduce the comfort.

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Magnetic Bearing Reaction Wheel Micro-vibration Signature Prediction

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