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本文介绍了用于超高真空设备中的磁力耦合传动元件的工作原理与结构，以及与普通磁力传动的差别。利用集总参数法建立了磁路参数计算的数学模型和公式，并得出传动力和力矩的计算公式。针对一种实用元件画出其工作特性曲线。这些内容是指导磁力传动元件优化设计和合理选用的理论其础。
This article describes the working principle and structure of a magnetically coupled transmission element used in ultra-high vacuum equipment, as well as differences from conventional magnetic drives. The mathematical model and formula of magnetic circuit parameter calculation are established by lumped parameter method, and the formulas of transmission force and moment are derived. Draw a graph of its operating characteristics for a practical element. These contents are the theoretical basis that guide the optimization design and reasonable selection of magnetic transmission components.