Asynchronous three-axis attitude control magnetic levitation inertia actuating mechanism

Abstract

The invention discloses an asynchronous three-axis attitude control magnetic levitation inertia actuating mechanism which comprises a stator and a rotor, the rotor is located in a cavity structure ofthe stator, no mechanical contact exists between the rotor and the stator during normal work, the stator comprises a plurality of stator frames connected with one another, a cavity structure of the stator defined by the stator frames; a plurality of stator windings each installed on the stator frame; a plurality of sensors respectively installed on the stator frame. The rotor includes a rotor conductor plate disposed within the cavity structure of the stator. The magnetic levitation inertia actuating mechanism has the advantages that the magnetic levitation inertia actuating mechanism utilizesthe interaction between the three-dimensional space electromagnetic field generated by each stator winding and the rotor conductor plate to realize the levitation and rotation of the rotor, and the rotor can rotate around any axis in the three-dimensional space due to no constraint of a bearing structure, so that the magnetic levitation inertia actuating mechanism has the capacity of outputting three-axis control moment.

Description

technical field [0001] The invention relates to the technical field of space vehicles, in particular to an asynchronous three-axis attitude control magnetic suspension inertial actuator. Background technique [0002] The inertial actuator is one of the core devices of the spacecraft attitude control system. Thanks to its advantages of no need to consume working fluid and high control torque accuracy, it is widely used in the attitude control of spacecraft such as satellites. [0003] According to the way of rotor support, inertial actuators can be divided into two categories: mechanical inertial actuators and magnetic levitation inertial actuators. Compared with mechanical inertial actuators, magnetic levitation inertial actuators use magnetic levitation technology to levitate the rotors of inertial actuators, avoiding mechanical contact between the rotors of inertial actuators and fixed parts, and have no friction, no wear, high precision, and long life. It has a broad app...

AI Technical Summary

Problems solved by technology

[0004] However, traditional magnetic suspension inertial actuators usually use magnetic bearings to suspend their rotors, resulting in the weight of magnetic suspension inertial actuators being greater than mechanical inertial actuators, which limits the application of magnetic suspension inertial actuators

[0005] In order to solve this problem, researchers in this technical field have done some research. For example, patent CN105775169A discloses a magnetic levitation inertial actuator named "a magnetized levitation induction driven reaction momentum ball". The type reaction momentum ball is composed of a spherical rotor and an arc-shaped stator. Through the interaction between the coils on the six arc-shaped stators and the spherical rotor, the output of the three-axis control torque and the three-axis attitude control of the spacecraft are realized; however, the The magnetized levitation induction driven reaction momentum ball uses 6 sets of 36 windings in total to drive its rotor, which leads to a complex structure of the device, which not only increases the difficulty of manufacturing, but also leads to a complicated control system, which is not conducive to its application.

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