Abstract
In compliance with ISO 16063-13, a shock calibration system for accelerometers ranging from 50 to 10,000 m/s2 and with pulse widths more than several milliseconds was developed. However, a piezoelectric accelerometer output voltage with zero shift was induced by the low-frequency response of the charge amplifier. So we designed a virtual amplifier with infinite impulse response filters as a digital replica of the charge amplifier. Since the virtual amplifier has the same input–output characteristics as the real charge amplifier, we can obtain the shock sensitivity of a piezoelectric accelerometer by applying the input acceleration to the virtual amplifier. As a result, we obtain flat charge sensitivities from 50 to 10,000 m/s2, which are comparable to the vibration calibration results.
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References
Chu A (1987) Zeroshift of piezoelectric accelerometers in pyroshock measurements. Shock Vib Bull 57, Part I:71–80
ISO (2001) Methods for the calibration of vibration and shock transducers: part 13. Primary shock calibration using laser interferometry ISO 16063-13.
ISO (2005) Methods for the calibration of vibration and shock transducers: part 22. Shock calibration by comparison to a reference transducer ISO 16063-22
Nozato H, Bruns T, Volkers H, Oota A (2014) Digital filter design with zero shift on charge amplifiers for low shock calibration. Meas Sci Technol 25:035005
Nozato H, Usuda T, Oota A, Ishigami T (2010) Calibration of vibration pick-ups with laser interferometry: part IV. Development of a shock acceleration exciter and calibration system. Meas Sci Technol 21:065107
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© 2015 The Society for Experimental Mechanics, Inc.
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Nozato, H., Kokuyama, W., Ota, A. (2015). Shock Calibration with Zero Shift Using a Digital Filter Technique. In: Wicks, A. (eds) Shock & Vibration, Aircraft/Aerospace, and Energy Harvesting, Volume 9. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-15233-2_18
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DOI: https://doi.org/10.1007/978-3-319-15233-2_18
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-15232-5
Online ISBN: 978-3-319-15233-2
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