Publication

Force Analysis of a Slotless Lorentz-Type Active Magnetic Bearing Actuator

Yves Perriard, Douglas Martins Araujo, Leopoldo Rossini, Guzmán Borque Gallego
2018
Conference Papers

Abstract

This article presents the analysis of the three-dimensional forces applied by a slotless Lorentz-type fully-active magnetic bearing actuator. An analytical model is presented for defining the forces applied by every radial and axial bearing of the actuator, which allows identifying cross-couplings and deviations from the ideal forces, an essential step for their minimisation. A validation campaign is performed to guarantee and assess the accuracy of such a model employing a magnetic bearing demonstrator that features a dual hetero/hompolar machine design.

Official source

https://infoscience.epfl.ch/entities/publication/d819acf1-24fa-4a83-bf26-98a078206f5d

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Yves Perriard, Douglas Martins Araujo, Leopoldo Rossini, Guzmán Borque Gallego
2018
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d819acf1-24fa-4a83-bf26-98a078206f5d

About this result

Related concepts (26)

Thrust bearing

A thrust bearing is a particular type of rotary bearing. Like other bearings they permanently rotate between parts, but they are designed to support a predominantly axial load. Thrust bearings come in several varieties. Thrust ball bearings, composed of bearing balls supported in a ring, can be used in low thrust applications where there is little axial load. Cylindrical thrust roller bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing.

Plain bearing

A plain bearing, or more commonly sliding contact bearing and slide bearing (in railroading sometimes called a solid bearing, journal bearing, or friction bearing), is the simplest type of bearing, comprising just a bearing surface and no rolling elements. Therefore, the journal (i.e., the part of the shaft in contact with the bearing) slides over the bearing surface. The simplest example of a plain bearing is a shaft rotating in a hole. A simple linear bearing can be a pair of flat surfaces designed to allow motion; e.

Rolling-element bearing

In mechanical engineering, a rolling-element bearing, also known as a rolling bearing, is a bearing which carries a load by placing rolling elements (such as balls or rollers) between two concentric, grooved rings called races. The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding. One of the earliest and best-known rolling-element bearings are sets of logs laid on the ground with a large stone block on top.

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Force Analysis of a Slotless Lorentz-Type Active Magnetic Bearing Actuator

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