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相关概念视频

Gyroscope: Precession01:24

Gyroscope: Precession

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Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
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Gyroscope01:02

Gyroscope

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A gyroscope is defined as a spinning disk in which the axis of rotation is free to assume any orientation. When spinning, the orientation of the spin axis is unaffected by the orientation of the body that encloses it. The body or vehicle enclosing the gyroscope can be moved from place to place, while the orientation of the spin axis remains the same. This makes gyroscopes very useful in navigation, especially where magnetic compasses cannot be used, such as in crewed and crewless spacecraft,...
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Galvanometer01:25

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Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of  two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform...
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Updated: Jan 17, 2026

Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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高灵敏度的MOEMS陀螺仪利用子波长格子波导模式合效应.

Li Jin, Wenqiang Sun, RuoXi Li

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    此摘要是机器生成的。

    这项研究引入了一种新的微光电机系统 (MOEMS) 陀螺仪. 通过利用来自亚波长格子的异常衍射,它实现了高级惯性导航系统的高灵敏度.

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    相关实验视频

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    科学领域:

    • 光电学是指光电子产品.
    • 微电机系统 (MEMS) 是指微电机系统.

    背景情况:

    • 传统的MEMS陀螺仪在精度和灵敏度方面存在局限性.
    • 科里奥利斯原理是许多现有的MEMS陀螺仪设计的基础.

    研究的目的:

    • 介绍一个新的微光电机械系统 (MOEMS) 陀螺仪设计.
    • 为了利用网格-波导模式合效应,提高位移检测.

    主要方法:

    • 使用 RSoft 软件进行模拟,以优化子波长格子参数.
    • 耐受性分析,以评估制造精度的影响.
    • 开发基于Simulink的系统模型,用于性能评估.

    主要成果:

    • 实现了0.09nm/°/s的结构灵敏度.
    • 光学衍射灵敏度达到了0.679mW/nm.
    • 证明了2.72mV/°/s的总系统灵敏度.

    结论:

    • 拟议的子波长格子MOEMS陀螺仪克服了传统MEMS设计的局限性.
    • 这种新的陀螺仪显示出实现惯性级精度的巨大潜力.