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Publications in Scientific Journals:

J. Metzger, M. Kaltenbacher:
"Simultaneous Calibration Method for a 3D Particle Velocity Sensor";
Acta Acustica united with Acustica, 103 (2017), 2; 252 - 261.



English abstract:
There is still a lack of a reliable, stable and fast method for the calibration of a particle velocity sensor. Since most techniques estimate the particle velocity by means of an impedance model from a measured sound pressure, a direct calibration method by means of a reference particle velocity field can be beneficial for finding the sensitivity of such a sensor. Additionally, current methods are not capable for a calibration of all three transducers of a 3D sensor simultaneously. In this paper, we present a calibration method, with which all three transducers of a 3D particle velocity sensor can be calibrated at once in a frequency range of 40 Hz to 16 kHz. During the calibration process, the sensor is exposed to a sound field generated by a vibrating piston. The orientation of the sensor is determined by means of a mounted acceleration sensor. In addition, our method uses a numerical simulation study of the sound field to obtain the sensor's sensitivities. Calibration results obtained with our calibration method in comparison to the nominal correction curves specified by the manufacturer are presented and discussed along with a comparison of a measured and simulated particle velocity field above a vibrating plate.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.3813/AAA.919054


Created from the Publication Database of the Vienna University of Technology.