空间精密载荷微振动试验超静音重力卸载的研制

2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA) Pub Date : 2021-08-01 DOI:10.1109/ICIEA51954.2021.9516206

Chao Ma, Long Chen, Lei Liu, Qing Li, Hongjie Yang

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引用次数: 2

摘要

为了保证超安静载荷在轨道上的性能和可靠性，通常在发射前进行地面试验。然而，带悬架的重力卸载系统会给超安静载荷带来冗余干扰。重力卸载系统会影响超静音载荷的隔振性能。为解决重力卸荷系统引入扰动的问题，设计了一种高刚度架加超低频弹簧的重力卸荷系统。测试结果表明，在0.6 ~ 100hz的频率范围内，重力卸载系统将冗余干扰降低到小于$2\mu\mathrm{g}$，可以同时保证重力卸载功能和超安静环境。

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Development of Ultra-quiet Gravity Unloading for Micro-vibration Testing of Space Precision Payloads

To ensure the performance and reliability of ultra-quiet payloads in orbit, the ground test are usually carried out before launch. However, the gravity unloading system with suspension introduces redundant disturbances into ultra-quiet payloads. The gravity unloading system may affect the vibration isolation performance of the ultra-quiet payloads. To solve the problem of introducing disturbances, a gravity unloading system with high stiffness shelf and ultra-low frequency spring is designed in this paper. Testing results show that the gravity unloading system reduce the redundant disturbances to less than $2\mu\mathrm{g}$ within the frequency range of 0.6-100Hz, which can simultaneously guarantee the gravity unloading function and ultra-quiet environment.

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2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)

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