dc.contributor.author | Janse van Rensburg, Jan J. | |
dc.contributor.author | Van Schoor, George | |
dc.contributor.author | Van Vuuren, Pieter A. | |
dc.date.accessioned | 2015-04-28T09:17:19Z | |
dc.date.available | 2015-04-28T09:17:19Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Janse van Rensburg, J.J. et al. 2012. The characterization of the severity of rotor delevitation events: a parametric study. 13th International Symposium on Magnetic Bearings (ISMB13), Arlington, VA. | en_US |
dc.identifier.uri | http://hdl.handle.net/10394/13760 | |
dc.description.abstract | Active magnetic bearing (AMB) failure and the ensuing rotor behavior is a very important
aspect of AMB safety. A model for this rotor behavior was developed and was used to
characterize the severity of rotor delevitation events. The characterization was done by means of
severity indicators derived from the rotor behavior within the backup bearings.
The indicator is a quantitative value that can be used to compare different delevitation
events. The indicator presented in this paper is the non-dimensionalised velocity of the
geometric center of the rotor (Vval).
This indicator only requires the rotational speed and position data of the rotor to determine
the Vval quantity. This ensures that this value can be determined for most current operational
systems and on historical data logged from previous rotor delevitation events.
In order to validate Vval, a comparison was done between simulated and experimental rotor
drops and their associated Vval values. The model used to produce the simulation results is
BBSim. Experimental results were obtained on a 4-axis suspended rotor, modified to use rolling
element backup bearings. | en_US |
dc.language.iso | en | en_US |
dc.publisher | s.n | en_US |
dc.title | The characterization of the severity of rotor delevitation events: a parametric study | en_US |
dc.type | Other | en_US |
dc.contributor.researchID | 12297348 - Janse van Rensburg, Jan Jacobus | |
dc.contributor.researchID | 12134457 - Van Schoor, George | |
dc.contributor.researchID | 10732926 - Van Vuuren, Pieter Andries | |