Design and study of two-stage vibration reduction system of airborne gravimeter

被引：0

作者：

Qu J. ^{[1
,2
]}

Wang M. ^{[1
,2
]}

Jiang Z. ^{[1
,2
]}

Zhou X. ^{[1
,2
]}

Duan L. ^{[2
]}

机构：

[1] MNR Key Lab of Airborne Geophysics and Remote Sensing Geology, Beijing

[2] China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 11期

关键词：

Airborne gravimeter; Damper; High-frequency vibration; Vibration isolation efficiency; Vibration reduction system;

D O I：

10.13465/j.cnki.jvs.2022.11.013

中图分类号：

学科分类号：

摘要：

In development of domestic airborne gravimeter, only a layer of rubber is laid on internal inertial measurement unit of the instrument for simple vibration isolation, and the airborne gravimeter is directly mounted on airplane floor. Facing complex and changeable flight environment, it is impossible to effectively isolate high-frequency vibration of an aircraft, and the measurement accuracy of airborne gravimeter is affected. Here, based on theoretical analysis and measured results of vibration, the optimization design was done for relevant vibration parameters to develop a two-stage vibration reduction system with rubber sponge as the primary and secondary dampers. The test results showed that the vibration energy attenuation of the vibration reduction system in 3 fixed frequency tests is about -60 dB, the vibration energy attenuation in 2-100 Hz frequency sweeping is about -46 dB; the system's vibration isolation efficiency is more than 99.5%, so its vibration reduction effect is very significant. © 2022, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：97 / 103

页数：6

共 18 条

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