| 冲击加速度校准中低通滤波器的应用 |
| Analysis of the Low Pass Filter’s Application in Shock Acceleration Calibration |
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| 中文摘要: |
| 介绍了在冲击加速度校准中，为了抑制电、机械等干扰和噪声对冲击加速度测量结果的影响，采用二阶巴特沃斯型低通滤波器，通过时间序列翻转、二次滤波等方式，实现零相移的低通滤波效果。并比较不同截止频率下，低通滤波器对衰减程度不同的冲击加速度波形产生的峰值偏差，给出不同加速度波形下，低通滤波器截止频率选择应注意的问题。 |
| 英文摘要: |
| This paper introduces the realization of low pass filter effect of zero phase shift in shock acceleration calibration by means of a two-order Butterworth low pass filter, time series of turnover and two filtering modes, in order to restrain the influence of electrical, mechanical and other interference and noises on the measurement results of impact acceleration. We compared the peak deviation on the shock acceleration waves of different attenuation degrees with the low pass filter at different cut-off frequencies, and proposed the issues that are noticeable in selecting cutoff frequencies of low pass filter with different acceleration wave forms. |
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| 中文关键词: 冲击加速度 低通滤波 零相移 |
| 英文关键词:shock acceleration low pass filter zero phase shift |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2015.01.07 |
| 引用本文：贾秋燕,盛侃.冲击加速度校准中低通滤波器的应用[J].计测技术,2015,35(1):. |
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