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相关概念视频

Gyroscope: Precession01:24

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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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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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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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相关实验视频

Updated: Sep 18, 2025

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
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基于快速模式逆转的MEMS陀螺仪自动模式匹配方法

Feng Bu1, Bo Fan2, Rui Feng3

  • 1School of Electronic and Information Engineering, Suzhou Vocational University, Suzhou 215104, China.

Micromachines
|June 27, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了微电子机械系统磁盘共振器陀螺仪 (MEMS DRGs) 的自动模式匹配技术. 该方法快速调整共振频率,提高陀螺仪的灵敏度和稳定性.

关键词:
MEMS 磁盘共振器陀螺仪 陀螺仪快速模式逆转方式强力重新平衡的力量.模式匹配的模式匹配

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科学领域:

  • * 机械工程 机械工程
  • * 电气工程 电气工程
  • * 传感器技术 * 传感器技术

背景情况:

  • *由于处理错误,微电机械系统磁盘共振器陀螺仪 (MEMS DRGs) 的不对称刚性导致模式不匹配.
  • *这种不匹配会降低机械灵敏度和闭环尺度因子的稳定性,影响陀螺仪的性能.
  • *精确的模式匹配对于高精度陀螺仪操作至关重要.

研究的目的:

  • *为MEMS DRG开发一种自动模式匹配方法.
  • *通过解决模式不匹配,提高陀螺仪的灵敏度和闭环尺度因子的稳定性.
  • * 为了获得陀螺仪运行状态的真实共振频率,以实现精确的匹配.

主要方法:

  • * 实现了陀螺仪控制系统,带有闭环驱动,强力再平衡 (FTR) 和正方位错误校正.
  • *利用模式逆转,通过相锁循环 (PLL) 获得x和y轴的真频率.
  • *自动调整 x 轴调整电压以匹配两个轴的共振频率.

主要成果:

  • * 自动模式匹配方法仅在5秒内执行.
  • * 达到0.01赫兹的高频匹配精度.
  • * 在-20~60°C的温度范围内保持稳定的匹配,频率分割波动不超过0.005Hz.

结论:

  • * 提出的自动模式匹配方法有效地解决了MEMS DRG中的模式不匹配.
  • *该技术显著提高了陀螺仪的灵敏度和尺度因子的稳定性.
  • *表现出快速执行,高精度和在不同温度下强大的性能.