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使用皮埃佐执行器对光学表进行地震隔离

Tailong Wang^1,2, Carl Blair², Ammar Al-Jodah²

¹School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China.

The Review of scientific instruments

|June 27, 2025

概括

活跃的地震隔离平台减少了用于引力波检测的地面振动. 该系统使用压力执行器来抑制地震噪声,实现1 nm/Hz的残余水平运动.

科学领域:

物理物理学物理
工程工程师工程师工程师
引力波天文学引力波天文学

背景情况:

引力波探测器需要特殊的地震隔离来检测微弱的信号.
在精密测量实验中,地面振动是噪声的主要来源.

研究的目的:

描述一个用于精度测量实验的活跃地震隔离平台.
为了证明皮埃佐驱动在抑制地震噪声方面的有效性.

主要方法:

该平台使用皮埃佐驱动器来实现5个自由度 (3个转向,2个倾斜).
地震计监测桌子的运动,将数据输入反控制系统.
控制系统以0.3-3Hz的带宽工作,以抑制地震噪声.

主要成果:

在0.5-1.3赫兹之间实现了21至36dB的地震噪声抑制水平.
剩余的水平运动被减少到1nm/Hz在1Hz沿着光轴.
使用证人地震计验证了抑制的有效性.

结论:

积极的地震隔离平台有效地抑制地震噪声,用于精确的测量.
确定了诸如倾向转移合等限制,影响了所需频率范围内的性能.

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