概括
这项研究引入了一种新的三轴微光电机系统 (MOEMS) 加速度计. 新设计显著减少了横轴干扰,提高了诸如惯性导航等应用的准确性.
科学领域:
- 在MEMS/NEMS中使用.
- 光学工程是指光学工程.
- 传感器技术 传感器技术
背景情况:
- 微光电机系统 (MOEMS) 加速度计提供高精度和抗电磁干扰能力.
- 横轴干扰是影响加速度计在关键应用中的精度的一个主要限制.
- 现有的MOEMS加速度计需要提高偏差稳定性和减少干扰.
研究的目的:
- 开发一个三轴集成网格MOEMS加速度计,减少横轴干扰.
- 为了提高偏移稳定性,以便更准确地测量加速.
- 提出一种新的设计,以提高惯性导航和汽车系统的性能.
主要方法:
- 设计的外平面和内平面加速度计采用对称的悬臂梁结构.
- 集成了一个三轴格子MOEMS加速度计.
- 通过对称的设计原则,尽量减少横轴干扰.
主要成果:
- 实现了1.14μg (X轴),2.4μg (Y轴) 和1.79μg (Z轴) 的偏差稳定性.
- 获得的灵敏度为7.12V/g (X轴),7.04V/g (Y轴) 和26.31V/g (Z轴).
- 从5.02%降低到0.14%的异平横轴干扰,这是一个数量级的改进.
结论:
- 拟议的三轴集成网格MOEMS加速度计显示了明显较低的横轴干扰.
- 对称的悬臂梁设计增强了偏差稳定性和测量准确性.
- 这种进步为惯性导航和汽车行业的苛刻应用提供了卓越的性能.
相关概念视频
Measuring Acceleration Due to Gravity
677
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
677
Gyroscope: Precession
4.6K
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...
4.6K


