Abstract

As an electromechanical product, the performance of a magnetic bearing (MB) is determined not only by the original design, but also by the process and the assembly process. The location hole is a necessary part of the machining and assembly. In this paper, the influence of the location hole on the performance of the magnetic bearing is analyzed by the combination of equivalent magnetic circuit method and finite element method. The main performance with and without location hole are compared in detail, including magnetic field distribution, bearing capacity, current stiffness and displacement stiffness. Through the analysis, the sufficient margin for installation process should be fully guaranteed at design stage.

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