A magnetic levitation reaction flywheel device

A reaction flywheel and magnetic levitation technology, applied to electromechanical devices, magnetic attraction or thrust holding devices, electrical components, etc., to reduce volume, eliminate frictional torque, and improve service life

Active Publication Date: 2019-09-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing mechanical bearing flywheel and the magnetic suspension flywheel with two radial magnetic suspension bearings axially juxtaposed, and provide a simple structure with small volume, high reliability, light weight and low vibration and noise. , Long-life magnetic levitation reaction flywheel

Method used

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  • A magnetic levitation reaction flywheel device
  • A magnetic levitation reaction flywheel device
  • A magnetic levitation reaction flywheel device

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, the present invention is composed of a static part and a rotating part. The static part includes: the static part of the radial magnetic suspension bearing 4, the housing 1, the static part of the axial magnetic suspension bearing 7, the protective bearing 3, the position sensor 5, and the motor 6 The stator part and the base 8; the rotating part includes: the wheel body 2, the rotating part of the radial magnetic suspension bearing 4, the rotating part of the axial magnetic bearing 7, the rotating part of the motor 6, the protective bearing 3 is in the middle of the flywheel, and the protective bearing 3 Connected with the base 8, the outer side of the protective bearing 3 is a radial magnetic suspension bearing 4, its stationary part is connected with the base 8, and its rotating part is connected with the wh...

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Abstract

The invention discloses a magnetic suspension reaction flywheel device, which can be used as an attitude control execution mechanism of a spacecraft such as a satellite, an earth observation platform, a space telescope and the like, and is mainly composed of a wheel body, a housing, a base, a radial magnetic suspension bearing, an axial passive magnetic suspension bearing, a protective bearing, a position sensor and a motor component. Five-degree-of-freedom noncontact suspension is performed on a flywheel rotor by adopting the magnetic suspension bearings, the flywheel rotor is driven by a motor to rotate around a rotating shaft, a control torque is output, the radial magnetic suspension bearing controls radial translation of the rotor, and the axial magnetic suspension bearing controls radial rotation and axial translation of the rotor. The device is reasonable and compact in layout of each component, reduces the size and the weight, eliminates rotational speed zero crossing friction and mechanical wear of a mechanical bearing flywheel, improves the control precision of the flywheel and prolongs the service life of the flywheel.

Description

technical field [0001] The invention relates to the technical field of flywheel mechanisms, in particular to a magnetic levitation reaction flywheel device, which can be used for attitude control of spacecraft such as satellites, earth observation platforms, and space telescopes. Background technique [0002] Attitude control actuators of spacecraft such as satellites, earth observation platforms, spacecraft, and space telescopes require small size, light weight, long life, low power consumption, and high reliability. At present, the flywheel used as the actuator of the attitude control system of the spacecraft is generally supported by mechanical bearings, which fundamentally limits the increase in the speed of the flywheel. Therefore, in order to achieve the required angular momentum, the weight and volume of the flywheel have to be increased. In addition, mechanical bearings have problems such as mechanical wear, unbalanced vibration, and large zero-crossing friction torq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/02H02N15/00
Inventor 韩邦成郑世强李海涛刘刚乐韵
Owner BEIHANG UNIV
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