分散合和微机械共振器的双模式传感器
Wenliang Xia1,2, Jiaxin Qin1,2, Yulan Lu1
1State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China.
Microsystems & nanoengineering
|January 12, 2026
概括
微机械共振器中的双模式传感通过使用多个振动模式来提高准确性. 这种方法使信号脱,可以进行精确的现场补偿测量,从而推进了共振传感器技术.
科学领域:
- 物理 物理学 物理
- 工程 工程师 工程师 工程师
- 材料科学 材料科学 材料科学
背景情况:
- 共振传感器提供高精度,但多参数检测面临交叉敏感性挑战.
- 微机械共振器具有多种振动模式,每个都对不同的外部参数敏感.
- 双模式传感利用不同的模式灵敏度来改进参数检测和现场补偿.
研究的目的:
- 为了研究用于双模式振动传感的双缩微束中的分散合.
- 开发一种方法来解双模振动信号,并实现稳定的闭环控制.
- 为了实现对高精度传感应用的双模式频率的实时同步读取.
主要方法:
- 在双模式激发下对模间相互作用和振动信号合的分析.
- 实现恒定振幅自动增强控制 (AGC) 和双差分检测.
- 使用共振压力传感器进行实验验证,以证明现场温度补偿.
主要成果:
- 提出并验证了一种新的双模式振动信号解和稳定的闭环控制方法.
- 共振压力传感器实现了优异的现场温度补偿,FS安装精度为±0.009%.
- 记录了特殊的性能指标,包括±0.012%的FS总压力精度,低重复性和歇斯底里错误.
结论:
- 拟议的双模式传感策略有效地减轻了交叉灵敏度,并实现了高精度的共振传感.
- 开发的方法提供了简单,高效,并同步读取双模式频率.
- 这一进步为多参数测量和微型智能共振传感器的开发带来了巨大的潜力.
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