NEW PRINCIPLE OF ACOUSTIC CALIBRATORS DESIGN

Wieslaw Barwicz, Andrzej Podgórski, Serghei Duminov, Roman Z. Morawski

Abstract

A new principle of acoustic calibrators design, based on the use of a microprocessor in the control loop of the calibrator, is presented. The mechanical and functional features of the calibrator using this principle are briefly described, and its technical specification is given. The applied algorithms of digital regulation loop and the coherent sampling of the reference signal are described in details. The carried-out experiments are presented as well as the results of the tests. The strong and the weak points of the selected solution in the relation to the traditional analogue techniques are pointed out. The conclusions concerning the practical usefulness of the developed calibrator are drawn.

Keywords

acoustic calibrator, microprocessor-based acoustic signal source, highly stable acoustic generator

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PWC-2006-TC4-051u.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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