A novel modular electromagnetic actuator for micro-nano satellite application is proposed in this article. This actuator is combined with two functional units. The permanent magnet connection unit is used to realize the static connection of two micro-nano satellites with no power loss. The electromagnetic separation unit is used for the separation motion and transposition motion. Different magnetization types and topologies for these two units are compared. The attractive force characteristics for the permanent magnet connection unit are analyzed, and the attractive force ratio is used as an index to choose the proper magnetization type. For the electromagnetic separation unit, the repulsive force per mass is an important parameter for selecting a good topology. To suppress the magnetic field interference, the magnetic shielding structures are also designed. The results are based on 3D finite element calculation. Finally, the prototype of two cube frames with the proposed electromagnetic actuator are manufactured, and they perform well in tests, which verifies the related analysis and design.

中文翻译：

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新型微纳卫星模块化电磁致动器的设计与分析

本文提出了一种适用于微纳卫星应用的新型模块化电磁致动器。该执行器与两个功能单元结合在一起。永磁连接单元用于实现两颗微纳卫星的静态连接，且无功率损耗。电磁分离单元用于分离运动和换位运动。比较了这两个单元的不同磁化类型和拓扑。分析了永磁连接单元的吸引力特性，并将吸引力比作为选择合适的磁化类型的指标。对于电磁分离单元，每质量的排斥力是选择良好拓扑的重要参数。为了抑制磁场干扰，还设计了磁屏蔽结构。结果基于3D有限元计算。最后，制造了带有所提议的电磁致动器的两个立方体框架的原型，并且它们在测试中表现良好，从而验证了相关的分析和设计。