Research on Output Characteristics of Piezoelectric Accelerometers for Low-Frequency Vibration

Chao Fu Zhu; Xu Qin; Li Wen Zheng

doi:10.4028/www.scientific.net/AMR.139-141.2460

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 139-141Research on Output Characteristics of...

Research on Output Characteristics of Piezoelectric Accelerometers for Low-Frequency Vibration

Abstract:

Piezoelectric accelerometers are widely used for the measurement of middle- or high-frequency vibration. It is necessary to verify via experiments whether piezoelectric accelerometers can accurately measure low-frequency vibration. An experiment is designed to test the output characteristics of piezoelectric accelerometers for vibration of 1~5 Hz frequency, using a standard vibrator at low frequency (≤5Hz) and an accurately calibrated non-contact eddy current sensor as datum sensor. The experiment shows that the output characteristics of piezoelectric accelerometers are relatively stable when measuring vibration of 4~5Hz frequency. However, the output characteristics of accelerometers change with the frequencies and accelerations of vibration when the vibration frequencies are 1~3 Hz. It will affect the accuracy of vibration measurement.

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Periodical:

Advanced Materials Research (Volumes 139-141)

Pages:

2460-2463

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.139-141.2460

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Online since:

October 2010

Authors:

Chao Fu Zhu, Xu Qin, Li Wen Zheng

Keywords:

Calibration, Low Frequency Vibration, Piezoelectric Accelerometers, Signal

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References

[1] P. Q Yan, T. P Qiao. Measurement of Low Frequency Vibration in Engineering and Its Transducers. Beijing: Journal of Vibration, Measurement & Diagnosis. 2002, No12: p.247~252.

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[2] C. F Zhu, X Qin. Research on Calibration for Measuring Vibration of Low Frequency. International Workshop on Mechanic Automation and Control Engineering (MACE 2010). 2010, 06: China, Wuhan.

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