To make full use of the space and improve the radial bearing capacity, a new two-degree of freedom (DOF) four-pole radial hybrid magnetic bearing (RHMB) is researched in this article. This RHMB is characterized by that independent magnetic circuit is adopted, and the radial suspension winding is installed in the axial space. First, the structure and working principle are introduced. Second, the mathematical models are established and the main parameters of the prototype RHMB are designed. The 3-D finite-element analysis is carried out to analyze and calculate the magnetic circuit, suspension mechanism, and force–current relationship. Finally, the experimental system is built and the suspension force is tested. The research results have shown that the structure and magnetic circuit of the RHMB is reasonable and the mathematical model is correct.

中文翻译：

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大径向承载能力四极混合磁力轴承悬吊力分析

为了充分利用空间，提高径向承载能力，本文研究了一种新型的二自由度（DOF）四极径向混合磁轴承（RHMB）。该RHMB的特点是采用独立磁路，径向悬浮绕组安装在轴向空间。首先介绍结构和工作原理。其次，建立了数学模型，设计了原型RHMB的主要参数。进行3-D有限元分析以分析和计算磁路、悬架机构和力-电流关系。最后搭建了实验系统，对悬挂力进行了测试。研究结果表明，RHMB的结构和磁路合理，数学模型正确。