Multiple-degree-of-freedom vibration isolator and multiple-degree-of-freedom vibration isolating system for effective load and satellite

Abstract

The invention belongs to the field of mechanical vibration isolation and particularly relates to a multiple-degree-of-freedom vibration isolator and a multiple-degree-of-freedom vibration isolating system for an effective load and a satellite. The multiple-degree-of-freedom vibration isolator provided by the invention consists of a casing, a motion guide rod, a metal wire network material member,flexible hinges, a fine tuning spring, an upper casing end cover and a lower casing end cover and has the advantages of compact structure, reliable performance, long service life and the like. The vibration isolating system consisting of the vibration isolator arranged according to a certain geometry configuration is arranged between the effective load and the satellite and can be used for isolating the vibration transmitted to the effective load from each direction of a satellite platform; and the vibration isolator is connected with the effective load and the satellite through the flexible hinges, and thus a gap, collision and the like are avoided.

Description

technical field [0001] The invention belongs to the field of mechanical vibration isolation, and in particular relates to a satellite payload multi-degree-of-freedom vibration isolator and a system. Background technique [0002] In recent years, with the development of aerospace technology, the resolution of earth observation and astronomical observation satellites is getting higher and higher. An important issue that follows is that the vibration generated by moving parts such as the attitude control flywheel and the tracking and scanning mechanism on the satellite platform has an increasing impact on the working quality of the payload. Although these vibrations are small in magnitude, they will blur the high-resolution images taken by the space camera and cannot achieve the expected working performance. The methods to solve this problem include vibration isolation of the vibration source and vibration isolation of the payload. However, since there are many vibration sour...

AI Technical Summary

Problems solved by technology

For ordinary vibrations, the impact of this gap on the vibration isolation performance is negligible, but the magnitude of vibration on the satellite platform is very small, and its amplitude is several microns, and the gap of the spherical joint will seriously affect the isolation of the vibration isolation system. Vibration performance, including making the natural frequency of the vibration isolation system deviate from the design value, making the damper unable to achieve the proper damping effect, and may cause additional collisions and impacts

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