A magnetic levitation momentum ball driven by a magnetic wheel

Abstract

A magnetic levitation momentum ball driven by a magnetic wheel is used for satellite attitude adjustment. The magnetic levitation momentum ball driven by a magnetic wheel includes a stator and a mover, the mover is in the shape of a spherical shell, and the material of the mover is non-ferromagnetic conductive Metal material; the stators are divided into three groups, the axes of the three groups of stators are orthogonal to each other, each group includes two stators, and the two stators in each group are arranged symmetrically with the center of the sphere of the mover, and each stator includes a stator motor and Magnetic wheel, the magnetic wheel is installed on the stator motor and driven to rotate by the stator motor; the upper surface of the magnetic wheel is a spherical surface concentric with the outer surface of the mover, and the spherical radius of the upper surface of the magnetic wheel is larger than the spherical radius of the outer surface of the mover. There is an air gap on the outer surface of the wheel and the mover. The invention realizes the integration of the levitation, rotation and drive of the magnetic levitation momentum ball, has simple and compact structure, small volume, light weight, low cost, high efficiency, inherently stable levitation, and simple levitation control.

Description

technical field [0001] The invention relates to a magnetic levitation momentum ball driven by a magnetic wheel, which is used as an actuator for satellite attitude adjustment, and belongs to the technical field of aerospace. Background technique [0002] In-orbit satellites undertake specific missions of space exploration, development, and utilization. Such missions require attitude stability or attitude maneuvering for satellite attitude control. As a key technology of satellite attitude control, the actuator for satellite attitude stabilization and maneuvering has been widely concerned. The momentum wheel based on the principle of momentum moment conservation is a commonly used technical solution. The existing mature technology is the mechanical ball bearing momentum wheel. Although the magnetic levitation momentum wheel proposed by some scholars overcomes the mechanical friction loss of the mechanical ball bearing momentum wheel, the momentum wheel has problems such as la...

AI Technical Summary

Problems solved by technology

The existing magnetic levitation momentum ball technology is mostly a magnetic levitation momentum ball with permanent magnet synchronization, which is complicated to manufacture and expensive, which is not conducive to miniaturization and cost reduction, which limits its application

Most of the existing magnetic levitation momentum balls driven by inductive magnetic wheels cannot realize the integration of levitation and drive, which is not conducive to the attitude control of satellites; moreover, the levitation is mostly realized by suction, which is not an inherently stable levitation system, and levitation control is complicated

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