Design and verification of a piezoelectric-driven locking and handover mechanism for space-based gravitational wave detection.

IF 1.7 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
Yiyan Xu, Wei Wang, Chao Xue, Jinxiu Zhang, Yanwei Ding, Shengping Huang
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引用次数: 0

Abstract

Space inertial sensors, comprising a test mass and its surrounding framework, are pivotal for high-precision gravitational wave detection. The precise locking and handover of the test mass are crucial, particularly during launch and orbital insertion phases. Given the necessity for ultra-stable locking mechanisms in space inertial sensors to ensure mission success, this paper presents a novel locking and handover mechanism driven by a rotating piezoelectric motor and lead screw. This mechanism ensures stable support and accurate handover of the test mass. Finite element simulations were performed to evaluate the static performance and modal response of the mechanism, confirming its stability under a preload of 1200 N and its ability to avoid resonance with rocket launch frequencies. A testing platform was constructed to validate the performance of the design. Experimental results demonstrate a maximum locking force of 1313.3 ± 3.1 N, a typical force resolution of 15.4 ± 3.6 N, a movement range of 10.0 ± 0.7 mm, and a typical displacement resolution of 1.7 ± 0.8 μm. Both simulation and experimental outcomes indicate that this design successfully integrates high preload locking with precise force and displacement control. This work represents a significant advancement in space mechanism design by combining high preload stability with micrometer-level precision.

空间引力波探测压电驱动锁定切换机构的设计与验证。
空间惯性传感器由测试质量及其周围框架组成,是高精度引力波探测的关键。测试质量的精确锁定和交接至关重要,特别是在发射和轨道插入阶段。考虑到空间惯性传感器需要超稳定的锁紧机构以保证任务的成功,本文提出了一种由旋转压电电机和丝杠驱动的新型锁紧切换机构。该机构保证了稳定的支撑和测试质量的准确交接。通过有限元仿真对该机构的静态性能和模态响应进行了评估,验证了该机构在1200 N预载荷下的稳定性以及避免火箭发射频率共振的能力。搭建了测试平台,对设计的性能进行了验证。实验结果表明,最大锁紧力为1313.3±3.1 N,典型力分辨率为15.4±3.6 N,运动范围为10.0±0.7 mm,典型位移分辨率为1.7±0.8 μm。仿真和实验结果表明,该设计成功地将高预紧力锁定与精确的力和位移控制相结合。这项工作结合了高预紧稳定性和微米级精度,代表了空间机构设计的重大进步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Review of Scientific Instruments
Review of Scientific Instruments 工程技术-物理:应用
CiteScore
3.00
自引率
12.50%
发文量
758
审稿时长
2.6 months
期刊介绍: Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.
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