Analysis of ultra-high frequency (UHF) components in the high-shock measurement
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摘要:
大冲击测量时，高 g 值激励中存在远高于测量频率之上的分量，会造成加速度计数据零漂、非线性甚至损坏；系统分析了高频能量对加速度计的影响以及产生影响的机理，试验验证了机械滤波器可有效滤除高频能量，改善压电加速度计零漂问题，并根据分析和试验结果提出相应的解决措施。
Abstract:
This paper focuses on the ultra-high frequency (UHF) components during high-shock measurement. The UHF signal cause zero-drift, non-linearity or damage to accelerometer. How the UHF power affects to the accelerometer is discussed in this paper. Mechanical filters are proved to be useful to separate the UHF with the others. According to the analysis and experiment results, solutions are put forward to the zero-drift problem of piezoelectric accelerometer.
