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Application of fringing range method to micromagnetic bearing actuator design

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2 Author(s)
Lijiang Qin ; Dept. of Electr. Eng., R. Melbourne Inst. of Technol., Vic., Australia ; Zmood, R.B.

The fringing range method developed earlier for two-dimensional problems is extended in this paper to three-dimensional cases and is used for analyzing a micromagnetic bearing actuator. Expressions for the air-gap permeances, as well as forces and torques, are derived that are suitable for parametric analysis of the actuator design. With this approach, the air-gap permeances are also used in the magnetic circuit for calculating the air-gap magnetomotive forces, thus, allowing the development of a systematic procedure for magnetic bearing analysis and design. A design example is given to illustrate the application of the present approach

Published in:

Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 5 )

Date of Publication:

Sep 2000

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