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A magnetic levitation counteractive flying wheel

A reaction flywheel and magnetic levitation technology, applied in the direction of magnetic attraction or thrust holding devices, bearings, electrical components, etc., to achieve the effect of increasing the force arm, increasing the natural mode frequency, and reducing the vibration level

Inactive Publication Date: 2007-10-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem of 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 juxtaposed axially, and to provide a magnetic suspension reaction flywheel with small volume, light weight, low vibration and noise, and long service life

Method used

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  • A magnetic levitation counteractive flying wheel
  • A magnetic levitation counteractive flying wheel
  • A magnetic levitation counteractive flying wheel

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Embodiment Construction

[0023]As shown in Figure 1, the present invention is made up of static part and rotating part, and static part comprises: the stator part of radial magnetic suspension bearing 8, upper protective bearing 7, lower protective bearing 13, lock nut 5, axial magnetic suspension bearing 3 The stator part, the installation shaft 6, the displacement sensor 9, the displacement sensor support 11, the stator part of the motor 10, the casing 1 and the base 12; the rotating part includes: the wheel body 2, the rotor part of the radial magnetic suspension bearing 8, and the axial magnetic suspension bearing 3, the rotor part of the motor 10 and the bearing housing 4. The radial magnetic suspension bearing 8 is located in the middle of the flywheel, and the upper protective bearing 7 and the lower protective bearing 13 are respectively installed at both ends along the axial direction, the lower protective bearing 13 is connected with the installation shaft 6, and the upper protective bearing ...

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Abstract

The present invention provides a magnetic bearing reaction wheel which can be used as an attitude control execution mechanism of the space vehicles such as a satellite, a geoelectric observation platform and a space telescope. The magnetic bearing reaction wheel mainly consists of a wheel body, a casing, an installing shaft, a radial magnetic suspension bearing, an axial magnetic suspension bearing, an upper protection bearing, a lower protection bearing, a bearing seat, a locknut, a displacement sensor, a displacement sensor support, an electric motor, a base etc. The radial magnetic suspension bearing controls the rotor to move in the radial direction, and the axial magnetic suspension bearing controls the radial rotation and the axial parallel movement of the rotor. In the present invention, the arrangement of the assembly is reasonable and compact, and the volume and the weight are reduced, and the over-zero friction force and the physical deterioration of the mechanic bearing flywheel are eliminated, and the control precision and the use lifetime of the flywheel are improved.

Description

technical field [0001] The invention relates to a magnetic levitation reaction flywheel, which can be used as an actuator for attitude control systems of spacecraft such as satellites, earth observation platforms, spaceships, 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 spacecraft attitude control system is generally still 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 torque, which seriously affect the ...

Claims

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Application Information

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IPC IPC(8): H02N15/00G05D1/08F16C32/04
Inventor 房建成刘虎孙津济刘刚韩邦成樊亚洪
Owner BEIHANG UNIV
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