空间惯性传感器地面隔振摆台建模与分析

Modeling and Analysis of Vibration Isolation Pendulum for Space Inertial Sensors Performance Investigation

空间惯性传感器是空间引力波探测任务的核心技术之一,在地面对其性能研究时不可避免地受到地面振动的影响。文章聚焦于惯性传感器悬丝悬挂地面研究方案中隔振系统的基础理论与关键技术,提出一种地面振动隔离方案并进行了建模分析。首先介绍了基于罗伯茨连杆机构的低频水平隔振方法,并对其进行了详细的理论建模;其次,分析了不同关键参数下,隔振摆台的隔振效果,确定了影响摆台隔振性能的主要因素,为下一步空间惯性传感器地面隔振系统的搭建和优化提供了一定的理论依据。

Space inertial sensors is one of the key technologies in space gravitational wave detection mission,and the performance research of it is inevitably affected by the seismic noise on the ground.This article focuses on the basic theory and key technologies of the vibration isolation system in the ground research scheme of the fiber suspension method of inertial sensors,proposing a ground vibration isolation scheme and conducting modeling analysis.This arti-cle introduced a low-frequency horizontal vibration isolation method based on Roberts linkage firstly,and conduct a detailed theoretical modeling.Secondly,analyzed the comparison of the vibration isolation performance of the pendu-lum under different key parameters,identified the main factors affecting the vibration isolation performance of the pendulum,and provided a theoretical basis for the construction and optimization of the seismic isolation system of the space inertial sensor in the next step.