两度自由度同步运动调制技术使用MEMS电压控制的振荡器为基础的相锁循环用于磁电阻传感
Zhenyu Shi1,2, Zhenxiang Qi1,2, Haoqi Lyu1,2
1State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China.
Sensors (Basel, Switzerland)
|April 28, 2025
概括
一个新的双相锁定循环二维同步运动调制 (TDSMM-DPLL) 系统显著降低了磁电阻传感器中的1 / f噪声. 这项创新增强了低频探测能力,用于高精度的磁场传感.
科学领域:
- 传感器技术 传感器技术
- 物理 物理学 物理
- 电气工程 电气工程
背景情况:
- 1/f 噪声显著限制了磁电阻 (MR) 传感器的低频性能.
- 传统的调制技术很难有效地减轻这种噪音.
- 高精度磁场检测需要先进的降噪策略.
研究的目的:
- 引入一种新的双相锁环二维同步运动调制 (TDSMM-DPLL) 系统.
- 为了提高MR传感器的低频探测能力.
- 为了有效地减轻MR传感器系统中的1/f噪声.
主要方法:
- 一个子驱动的共振器和一个压电悬臂光束共振器的集成.
- 使用双相锁定循环 (DPLL) 电路进行同步磁场调制.
- 将驱动共振器的共振频率调整为悬臂束共振器的两倍.
主要成果:
- 实现了38.98%的调制效率,超过了传统的单维方法.
- 显示频率艾伦变异减少了3.13倍 (从217.32ppb降至69.46ppb).
- 通过理论分析,模拟和实验验证,证实了大量的噪声抑制.
结论:
- 该TDSMM-DPLL系统有效地抑制了MR传感器中的1 / f噪声.
- 该系统显著提高了低频检测能力.
- 这种新的方法为高精度磁场检测应用提供了一个有前途的解决方案.
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