Spacecraft ultra-quiet environment simulating and testing system

Abstract

The invention provides a spacecraft ultra-quiet environment simulating and testing system, which includes a crane, a sound absorbing structure, a sound insulation wall, a mass block, an air spring isolator, a vibration isolation track, a laboratory ground base, a sound insulation door, a maintenance channel, a vibration isolation channel, and a fine sand cushion. The sound insulation wall and the laboratory ground base are connected through the vibration isolation track; the mass block and the laboratory ground base are connected through the air spring isolator; the sound absorbing structure and the sound insulation wall are fixedly connected; the crane is located above the mass block; the internal part of the laboratory ground base is provided with the maintenance channel; the sound insulation wall and the sound absorbing structure are connected; the vibration isolation channel is connected with the fine sand cushion. The system of the invention is capable of increasing isolation effect of ground vibration and transverse vibration, increasing the sound insulation effect of the wall, enhancing the isolation effect of air and sound, effectively reducing the background noise in a testing area, meeting the background noise requirement in micro-vibration test and the environmental interference suppression requirement, increasing the isolation effect of the testing area to sounds of solid objects and providing advanced micro-vibration testing means to a high precision large scale spacecraft.

Description

technical field [0001] The invention relates to an environment simulation test system, in particular to a spacecraft ultra-quiet environment simulation test system. Background technique [0002] During the operation of the spacecraft, the high-speed rotation of the rotating parts on the star, the stepping motion of the driving mechanism of the large controllable component, the ignition of the thruster during the orbit change and attitude adjustment, and the disturbance induced by the alternating cold and heat of the large flexible structure entering and leaving the shadow, etc., will cause the star to produce a jitter response. . Micro-vibration disturbance sources exist in most spacecraft. Due to the small amplitude of the micro-vibration dynamics environmental effect, it will not have a significant impact on most of the spaceborne equipment, and it is usually ignored. However, for high-precision remote sensing satellites, micro-vibration disturbances will seriously affec...

AI Technical Summary

Problems solved by technology

[0004] Due to the low frequency and small amplitude of the micro-vibration signal, when using ordinary testing methods and instruments for testing, the real signal is often mixed in the noise, which makes further data processing and analysis difficult, and even leads to wrong conclusions. Therefore, an ultra-quiet environment is established The simulation laboratory can effectively and quickly collect micro-vibration data, and provide data guarantee for the design of vibration reduction / vibration suppression, which is very necessary for the research of micro-vibration testing technology

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