航空重力仪两级减振系统设计与研究

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摘要国内航空重力仪研制中，通常仅对仪器内部惯性测量单元搁置一层橡胶进行简单的隔振，航空重力仪直接搭载在飞机底板上。面对复杂多变的飞行环境，无法对飞机的高频振动做到有效隔离，从而影响航空重力仪的测量精度。本文根据振动理论分析和实测结果对相关的振动参数进行优化设计，研制出以橡胶海绵作为一、二级减振器的两级减振系统。试验结果表明，减振系统在三个定频测试中的振动能量衰减达到-60dB左右，2-100Hz扫频中的振动能量衰减约-46dB，隔振效率都在99.5%以上，减振效果十分显著。

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	屈进红1
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	王明1
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	姜作喜1
	2
	周锡华1
	2
	段乐颖2

关键词 ：航空重力仪, 高频振动, 减振系统, 减振器, 隔振效率

Abstract：Usually, the inertial measurement unit of airborne gravimeter is used as a layer of rubber for simple vibration isolation in China, and the equipment is directly mounted on the plane bottom plate. Facing the complex and changeable flight environment, the high frequency vibration of aircraft can’t be effectively isolated, which affects the measurement accuracy. In this paper, vibration parameters are optimized according to vibration theory and measured results. A two-stage vibration isolation system with rubber sponge as first and second stage shock absorbers is designed. The test results show that the vibration energy attenuation in three fixed frequency tests reaches about -60dB, and the vibration energy attenuation in 2-100Hz sweep is about -46dB. The isolation efficiency of the vibration isolation system is above 99.5%, and it is very remarkable.

Key words： airborne gravimeter high frequency vibration vibration isolation system shock absorber vibration isolation efficiency

收稿日期: 2021-02-08 出版日期: 2022-06-15

引用本文:

屈进红1,2，王明1,2，姜作喜1,2，周锡华1,2，段乐颖2. 航空重力仪两级减振系统设计与研究[J]. 振动与冲击, 2022, 41(11): 97-103.
QU Jinhong1,2, WANG Ming1,2, JIANG Zuoxi1,2, ZHOU Xihua1,2, DUAN Leying2. Design and study of two-stage vibration reduction system of airborne gravimeter. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(11): 97-103.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I11/97

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