Double-magnetic-circuit electromagnetic actuator with compensation magnetic steel

Abstract

The invention provides a double-magnetic-circuit electromagnetic actuator with compensation magnetic steel, and belongs to the field of aerospace. The problems that an existing electromagnetic actuator is large in size and mass, small in thrust density and large in thrust fluctuation are solved. The actuator comprises a stator and a rotor; the stator comprises a stator frame, an outer magnetic structure and an inner magnetic structure; the outer magnetic structure comprises an outer magnetic yoke, an outer magnetic ring, an outer rear compensation magnetic ring, an outer front compensation magnetic ring and an outer paramagnetic yoke; the outer magnetic yoke is located on the radial inner side of the outer wall of an annular groove of the stator frame, and the outer magnetic ring is located in the center of the radial inner side of the outer magnetic yoke. The outer rear compensation magnetic ring is located at the axial rear end of the outer magnetic ring, the outer front compensation magnetic ring is located at the axial front end of the outer magnetic ring, the outer paramagnetic yoke is located on the radial inner side of the outer magnetic ring, and the outer magnetic structure is fixedly installed on the stator frame through the outer lock nut. The actuator is mainly used for electromagnetic actuators.

Description

technical field [0001] The invention belongs to the field of aerospace, in particular to a double magnetic circuit electromagnetic actuator with compensation magnets. Background technique [0002] It has become a research hotspot in today's international aerospace field that multiple satellites work together to complete complex space exploration tasks, such as formations and clusters. In particular, nano-satellites have the advantages of short development cycle and low cost. The clusters formed by them have high flexibility and good robustness, and can complete tasks that large satellites cannot independently complete or require high costs. [0003] In the on-orbit deployment of nano-satellites, in order to save costs, it is often necessary to use a deployer to store and release a large number of nano-satellites in orbit during a launch mission. Due to the weak orbit control capability of nano-satellites and the limited fuel they carry, facing more complex deployment tasks ...

AI Technical Summary

Problems solved by technology

However, the current traditional electromagnetic actuators have large volume and mass, low thrust density, and large thrust fluctuations, so it is difficult to be directly used to push nano-satellites to achieve on-orbit separation and release.

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