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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

37
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
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相关实验视频

Updated: Jul 3, 2025

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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高精度惯性传感器电荷地面测量方法基于相位敏感解调.

Yang Liu1,2, Tao Yu1, Yuhua Wang1,2

  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.

Sensors (Basel, Switzerland)
|February 10, 2024
PubMed
概括

精确的电荷测量对于太空引力波任务中的惯性传感器至关重要. 一种新的相位敏感解调方法提高了测试质量的电荷测量精度,满足了任务要求.

关键词:
测量电荷的测量方法强力调制方法的力量调制方法.惯性传感器是一种无动态传感器.阶段敏感的解调方式.太空引力波探测 太空引力波探测

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科学领域:

  • 太空物理空间物理学
  • 引力波检测引力波探测器
  • 传感器技术 传感器技术

背景情况:

  • 惯性传感器对于太空引力波检测至关重要,需要测试质量 (TM) 自由漂浮.
  • 剩余加速噪声,包括来自TM电荷的静电和洛伦兹力,必须最小化至<3×10-15ms-2Hz-1/2.2.
  • 高精度的电荷测量 (<3×10-13C) 对于TM的有效电荷管理至关重要.

研究的目的:

  • 设计和验证用于惯性传感器测试质量的高精度电荷测量方法.
  • 为了满足太空引力波任务的严格剩余电荷测量精度要求.

主要方法:

  • 开发了一种高精度的电荷测量方法,利用相位敏感解调 (PSD).
  • 基于力调制方法模拟扭矩摆形旋转,以分析TM扭矩角度信号.
  • 通过使用PSD分析TM扭矩角度信号中的特定频率组件,提取电荷信息.

主要成果:

  • 基于PSD的方法与Butterworth带通波器相比,显示了更高的测量精度.
  • 这种新方法表现出较短的沉降时间和优越的抗干扰能力.
  • 模拟结果证实该方法符合3×10-13C的所需TM残存电荷测量精度.

结论:

  • 设计的基于PSD的方法有效地以高精度测量测试质量电荷.
  • 该方法适用于用于太空引力波探测任务的惯性传感器中的电荷管理.
  • 该技术在精度,速度和稳定性方面比现有的过方法有显著的改进.