An interferometric inertial sensor for low-frequency seismic isolation

被引：9

作者：

Ding, Binlei ^{[1
,2
]}

Zhao, Guoying ^{[3
,4
]}

Watchi, Jennifer ^{[1
]}

Sider, Ameer ^{[4
]}

Collette, Christophe ^{[1
,4
]}

机构：

[1] Univ Libre Bruxelles, Precis Mechatron Lab, Brussels, Belgium

[2] BYD Auto Ind Co Ltd, Auto Prod Strategy & New Technol Res Inst, Shenzhen, Peoples R China

[3] Sun Yat sen Univ, TianQin Res Ctr Gravitat Phys, MOE Key Lab TianQin Mission, Guangzhou, Peoples R China

[4] Univ Liege, Precis Mechatron Lab, Liege, Belgium

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2022年 / 335卷

关键词：

Interferometric readout; Lehman pendulum; Inertial sensor; FOLDED PENDULUM; ACCELEROMETERS;

D O I：

10.1016/j.sna.2022.113398

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a high-resolution Horizontal Interferometric Inertial Sensor (HINS) is developed for active seismic isolation of gravitational wave detection instrument. Its resonance frequency can be tuned down to as low as 0.08 Hz thanks to the use of a Lehman pendulum and the inverted pendulum like mechanisms. Combined with a novel homodyne quadrature interferometer, a high resolution of 2 x 10(-13) m Hz (or 7.9 x 10(-12) (m/s root Hz) at 1 Hz can be obtained. A dynamic analysis is performed to investigate the response of the HINS to different types of excitations. A noise budgeting of the HINS is also conducted, which indicates that the resolution of HINS is limited by the thermomechancial noise from 0.01 to 1 Hz and by the thermal electrical noise of the photodetectors above 1 Hz. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：11

共 30 条

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