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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

31
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...
31

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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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在动态干扰测量位移检测中信号生成.

Knarik Khachatryan1, Simon Anter1, Michael Reichling1

  • 1Institut für Physik, Universität Osnabrück, Barbarastr. 7, 49076 Osnabrück, Germany.

Beilstein journal of nanotechnology
|August 27, 2024
PubMed
概括

本研究分析了无接触原子力显微镜 (NC-AFM) 中激光干扰仪的非线性反应. 我们表明,将模型与时间域信号相匹配,可以精确校准悬臂振荡幅度.

科学领域:

  • 物理 物理学 物理
  • 计量学 计量学 计量学
  • 表面科学是一门学科.

背景情况:

  • 激光干扰测量对于精确的位移测量至关重要.
  • 在非接触式原子力显微镜 (NC-AFM) 中,干涉度测量测量了用于力传感的微型杆位移.

研究的目的:

  • 为了研究NC-AFM中使用的迈克尔森型干扰仪中的非线性信号生成.
  • 开发一种精确校准悬臂振荡幅度的方法.

主要方法:

  • 评估干扰仪对在时间域内波悬臂位移的非线性响应.
  • 将数学模型与测量的时间域干涉度信号相匹配.

主要成果:

  • 随着悬臂振荡幅度的增加,由于空间周期性限制,干扰仪信号中会产生复杂的时间结构.
  • 通过模型装配,可以精确地确定控制干涉计位移信号的所有参数.
  • 证明了 2% 准确度的悬臂振荡幅度校准.

结论:

  • 对非线性干扰仪响应的分析为NC-AFM表征提供了可靠的方法.
  • 准确校准悬臂振荡幅度对于NC-AFM中可靠的力测量至关重要.
关键词:
在NC-AFMM中.幅度校准的扩展度是什么移位检测 移位检测 移位检测强力显微镜的力量显微镜.干扰仪的信号是干扰仪的信号.

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