- 1
- 2
- 3
- 4
- 5
IEPE加速度计电路噪声分析
资料介绍
研究压电集成电路加速度计的主要噪声源,利用En-In噪声模型将内部噪声源等效输入端,实现了输入噪声和输入信号的直接对比,能容易得到噪声对信号的影响。将Y-Δ变换原理引入T型网络噪声分析,降低噪声分析难度。通过对电路噪声的分析,在宽频范围内推导出可用于计算IEPE加速度计电路本底噪声的公式。将理论计算值与PSpice软件噪声分析所得值进行了对比,证明二者具有良好的相关性,同时得出了各噪声源在输入端对总噪声的贡献,提出了在不同频段内降低总噪声的方法,为IEPE加速度计电路的低噪声设计、参数选择和性能优化提供了理论依据。实验样机的实际值与理论值的对比结果表明,此法对于IEPE加速度计电路低噪声设计具有应用价值。
This paper studies the main source of noise in an integral electronics piezoelectric (IEPE) accelerometer circuit. When the noise model allows the internal noise to be converted into the input source, the noise's effect on the signals can be easily analyzed by the direct comparison between the input noise and input signal. Then, the noise analysis was simplified by introducing the transformation principle into the T-network noise analysis. The circuit background noise in the IEPE accelerometer within the broadband was derived based on the former analysis, which was verified by the PSpice software. Meanwhile, the method presented differ...
部分文件列表
| 文件名 | 大小 |
| IEPE加速度计电路噪声分析.pdf | 359K |
全部评论(0)