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Single axis controlled attraction type magnetic bearing

DOI: 10.1590/S0100-73862002000400012

Keywords: magnetic bearing, mechatronics, controlled bearing.

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Abstract:

this paper presents a new type of magnetic bearing with active control only in axial direction. the bearing uses two pairs of permanent magnets working in attraction mode to restrict the radial motion and a control system composed of two electromagnets, a gap sensor and a controller to keep the axis in a fixed axial position. the principle, the dynamic model for axial motion and the control system for this bearing are presented. finally, by experiments conducted in a prototype, the effectiveness of the presented concept is shown.

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