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Fabrication of Surface Acoustic Wave Devices on Lithium Niobate
Published on: June 18, 2020
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一个 toroidal SAW 陀螺仪,带有聚焦的 IDT,用于提高灵敏度
Lu Tian1, Haitao Zhao1, Qiang Shen1
1Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072 China.
Microsystems & nanoengineering
|March 18, 2024
概括
这项研究引入了一种新的 toroidal 站立波模式表面声波 (SAW) 陀螺仪,使用焦点交数字传感器 (FIDTs). 这种创新的设计显著提高了角度速度测量灵敏度和偏差不稳定性,适用于恶劣的环境.
科学领域:
- 传感器技术 传感器技术
- 声学物理 声学物理
- 机械工程 机械工程
背景情况:
- 表面声波 (SAW) 陀螺仪在恶劣环境中具有优势,因为与微电子机械系统 (MEMS) 陀螺仪相比,其机制更简单.
- 传统的SAW陀螺仪使用线性数字化传感器 (IDT) 面临着像光束偏移和能量消耗这样的局限性.
研究的目的:
- 提出和研究一种新的 toroidal 站立波模式 SAW 陀螺仪.
- 通过使用聚焦互数字化传感器 (FIDTs) 来提高陀螺仪的性能.
主要方法:
- 开发一个 toroidal 站立波模式 SAW 陀螺仪,结合 FIDTs.
- 陀螺仪的灵敏度和偏差不稳定性的实验性表征.
- 与传统SAW陀螺仪设计相比,性能指标的比较.
主要成果:
- 新型陀螺仪设计显示了由于FIDTs的改善聚焦性能和增加SAW振幅.
- 获得的灵敏度为1.51μV/±°/s,偏差不稳定度为0.77°/s.
- 性能指标显示,与传统的 SAW 陀螺仪相比,性能有着数量级的改善.
结论:
- 聚焦互数字传感器 (FIDTs) 显著提高了SAW陀螺仪的性能.
- 拟议的 toroidal 站立波模式 SAW 陀螺仪对于角速度测量是优越的.
- 这项研究为推进SAW陀螺仪灵敏度和整体性能提供了宝贵的见解.
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