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Active and passive integrated micro-vibration isolation device for reaction flywheel

A reaction flywheel and micro-vibration technology, applied in attitude control and other directions, can solve the problems of large micro-perturbation output, affecting the spacecraft target pointing accuracy and imaging quality, etc., to achieve stable and reliable attenuation, small changes in the original structure, and avoid loss. stable effect

Inactive Publication Date: 2016-06-29
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a micro-vibration active-passive integrated vibration isolation device for a reaction flywheel. This invention solves the problem that the micro-disturbance output is relatively large when the reaction flywheel is in use in the prior art, which seriously affects the payload on the spacecraft. Technical issues on important performance indicators such as target pointing accuracy and imaging quality

Method used

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  • Active and passive integrated micro-vibration isolation device for reaction flywheel
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[0024] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0025] Spacecraft in this article refers to various types of aircraft that operate in space according to the laws of celestial mechanics and perform specific tasks such as exploration, development, and utilization of space and celestial bodies. Spacecraft can be divided into unmanned spacecraft and manned spacecraft. Unmanned spacecraft are divided into artificial earth satellites, space probes and cargo spacecraft. Manned spacecraft is divided into manned spacecraft, space station, space shuttle, and aerospace plane.

[0026] see figure 1 The micro-vibration active and passive integrated vibration isolation device of the reaction flywheel provided by ...

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Abstract

The invention provides a micro-vibration active and passive integrated vibration isolation device for a reaction flywheel. The vibration isolation device includes an upper cover plate, a supporting unit and a lower bottom plate. The vibration isolation device is installed between the reaction flywheel and the spacecraft deck, and is used to reduce the impact of the disturbance force generated by the reaction flywheel on the stability of the spacecraft platform and the pointing accuracy of sensitive loads, while ensuring the attitude control moment of the reaction flywheel Passed normally to the spacecraft deck.

Description

technical field [0001] The invention relates to the technical field of vibration isolation for spacecraft structures, in particular to a micro-vibration active and passive integrated vibration isolation device for a reaction flywheel. Background technique [0002] For high-resolution astronomical observation spacecraft and Earth remote sensing spacecraft, the stability of the spacecraft platform is an important factor affecting the imaging quality of the payload. The reaction flywheel is often used as the main actuator of many spacecraft attitude control systems. In the working state, the rotor of the reaction flywheel is in a state of high-speed rotation for a long time. Due to factors such as the unbalance of the rotor itself, the small defects in the bearings used, and the output torque of the drive motor will pulsate from time to time, it can output normal attitude control torque at the same time. Accompanied by the output of the same-frequency and high-order harmonic d...

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Application Information

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IPC IPC(8): G05D1/08
CPCG05D1/08
Inventor 李东旭魏展基罗青
Owner NAT UNIV OF DEFENSE TECH
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