Nonlinear vibration damping device for suppressing in-orbit micro-vibration of spacecraft

Abstract

The invention discloses a nonlinear vibration damping device for suppressing in-orbit micro-vibration of a spacecraft. The nonlinear vibration damping device comprises a chamber, a spring, a circular permanent magnet, a damper, and a permanent magnet. The circular permanent magnet is fixedly connected to the inner wall of the chamber. One end of the spring is connected to the top of the chamber, and the other end of the spring penetrates the inner circle of the circular permanent magnet to be connected with the permanent magnet. One end of the damper is connected to the top of the chamber, and the other end of the damper penetrates the inner circle of the circular permanent magnet to be connected with the permanent magnet. After the nonlinear vibration damping device with the unique structural design is mounted at the inner part, having high damping requirement, of the spacecraft, the nonlinear vibration damping device is suitable for suppressing vibrations of structures operating in the microgravity environment; accordingly, the effect of suppressing vibrations of the spacecraft inner structures operating in outer space is good. The nonlinear vibration damping device is simple in structure, convenient to manufacture and low in cost.

Description

technical field [0001] The invention relates to the field of mechanical vibration reduction, in particular to a nonlinear vibration reduction device for suppressing micro-vibration of spacecraft on orbit. Background technique [0002] With the development of aerospace technology, the problem of vibration suppression in the microgravity environment of on-orbit spacecraft has become more and more prominent, seriously affecting the reliability and stability of precision instruments such as space cameras, and even causing serious disasters ACCIDENT. The special microgravity working environment of spacecraft in outer space is more complicated than that in gravity environment, and the structure of the spacecraft in orbit is flexible, the damping is small, and the frequency is wide. The natural frequency cannot be easily changed, and it is extremely sensitive to electromagnetic interference. Therefore, the vibration suppression of critical structures for on-orbit spacecraft is a d...

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Problems solved by technology

[0003] The present invention proposes a nonlinear damping device for suppressing on-orbit micro-vibration of a spacecraft, with the purpose of solving the problem of suppressing the vibration of key structures inside a spacecraft in a microgravity environment

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