FIELD: physics.
SUBSTANCE: natural vibrations of the structure of the tensometric transducer are excited by applying an ultrasonic pressure pulse on its sensitive diaphragm, said pulse being obtained by converting a controlled electric signal with an acoustoelectric piezoceramic transducer. Input and output signals are recorded and processed, their spectral composition is determined and the obtained information is used to estimate the frequency characteristic of the tensometric pressure transducer. To take into account the effect of frequency characteristics of piezoceramic transducers, two different emitters can be used, each of which can also be a signal receiver. As a result of successive use of emitters, data are obtained, which are sufficient to assemble a system of equations and obtain an estimate of dynamic characteristics of the pressure transducer. The input electric signal used can be a rectangular pulse whose duration is selected based on the analysed frequency range.
EFFECT: high measurement accuracy.
3 cl, 8 dwg
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