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http://dx.doi.org/10.3795/KSME-A.2005.29.12.1567

Design of Combined Radial and Axial 4-pole Electromagnetic Bearing (II) - with Coupled Bias Flux -  

Kim Ha-Yong (삼성종합기술원 HDD Program team)
Kim Seung-Jong (한국과학기술연구원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.12, 2005 , pp. 1567-1573 More about this Journal
Abstract
This paper introduces a new active magnetic bearing(AMB) that can provide both radial and axial control functions in one bearing unit without axial disk. It has a structure of double four-pole AMB or a four-pole AMB where each core is split into two axially. The cores have two kinds of coil winding; they independently generate fluxes on the planes perpendicular or parallel to the shaft. For the radial control action, it works just like a conventional four-pole AMB. Meanwhile, for the axial control, it uses the Lorentz force generated by the interaction of the bias flux for radial control and the axial control flux. In this paper, the proposed structure, principle, and design process based on magnetic flux analysis are introduced, and its feasibility is experimentally verified by using a simple PD control algorithm with a feedforward loop to compensate the coupled flux effect.
Keywords
Active Magnetic Bearing; Lorentz Force; Homopolar Magnetic; Bearing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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