Articles | Volume 7, issue 3
Research article
24 May 2022
Research article |  | 24 May 2022

Very low frequency IEPE accelerometer calibration and application to a wind energy structure

Clemens Jonscher, Benedikt Hofmeister, Tanja Grießmann, and Raimund Rolfes

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Wind Energ. Sci. Discuss.,,, 2023
Revised manuscript under review for WES
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Cited articles

Anslow, R. and O'Sullivan, D.: Choosing the Best Vibration Sensor for Wind Turbine Condition Monitoring, in: Analog Dialogue, vol. 54, (last access: 19 May 2022), 2020. a
Au, S.-K.: Uncertainty law in ambient modal identification – Part II: Implication and field verification, Mech. Syst. Sig. Process., 48, 34–48,, 2014. a
Brincker, R. and Larsen, J. A.: Obtaining and estimating low noise floors in vibration sensors, in: Proceedings of the 25th SEM International Modal Analysis Conference, Orlando, 19–22 February 2007, Florida, USA, (last access: 19 May 2022), 2007. a
Bruns, T. and Volkers, H.: Efficient calibration and modelling of charge amplifiers for dynamic measurements, J. Phys.: Conf. Ser., 1065, 222005,, 2018. a
D'Emilia, G., Gaspari, A., and Natale, E.: Amplitude–phase calibration of tri-axial accelerometers in the low-frequency range by a LDV, J. Sens. Sens. Syst., 8, 223–231,, 2019. a, b
Short summary
This work presents a method to use low-noise IEPE sensors in the low-frequency range down to 0.05 Hz. In order to achieve phase and amplitude accuracy with this type of sensor in the low-frequency range, a new calibration procedure for this frequency range was developed. The calibration enables the use of the low-noise IEPE sensors for large structures, such as wind turbines. The calibrated sensors can be used for wind turbine monitoring, such as fatigue monitoring.
Final-revised paper