AGGREGATE MEASUREMENTS OF ELECTRICAL PARAMETERS OF PIEZOCERAMIC ELEMENTS

Svetlov Anatoliy Vil'evich, Doctor of engineering sciences, professor, head of sub-department of radio engineering and radio electronic system, Penza State University (40 Krasnayа street, Penza, Russia), rtech@pnzgu.ru
Koldov Aleksandr Sergeevich, Senior lecturer, sub-department of radio engineering and radio electronic system, Penza State University (40 Krasnayа street, Penza, Russia), rtech@pnzgu.ru
Rodionova Nina Vladimirovna, Postgraduate student, Penza State University (40 Krasnayа street, Penza, Russia), rtech@pnzgu.ru
Lomtev Evgeniy Aleksandrovich, Doctor of engineering sciences, professor, sub-department of information-measuring technology and metrology, Penza State University (40 Krasnayа street, Penza, Russia), iit@pnzgu.ru
Tsypin Boris Vul'fovich, Doctor of engineering sciences, professor, sub-department of space-rocket and aircraft instrument engineering (on the basis of “RIFM” Plc.), Penza State University (40 Krasnayа street, Penza, Russia), rkap@pnzgu.ru

621.317.3

Background. The urgency of development of piezoceramic elements’ parameters measuring means is caused by the rapid development of piezoelectric instrument en-gineering and by extension of the field of application of such elements. The research aim is to confirm the possibility of determining all the electrical parameters of piezo-ceramic elements, represented by four-element equivalent circuits.
Materials and methods. Electrical parameters of piezoceramic elements are de-termined by solving the system of equations describing the results of measurements of the total sinusoidal and pulse test signals.
Results. The article presents a scheme of the stand for automatic measurement of the total parameters of piezoceramic elements and the measurement technique. By modeling in PSpice the authors assessed the measurement errors caused by the con-necting device, designed to connect a piezoceramic element to a test signals genera-tor and a measuring circuit.
Conclusions. The authors confirmed the possibility of determining all the electri-cal parameters of piezoceramic elements by solving a system of equations describing the results of the aggregate measurement of sinusoidal and pulse test signals. It has been found that the coupling device for connecting a piezoceramic element should have a small installation volume.

piezoceramic element, equivalent electric circuit, parameters, aggregate measurement, error.

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