The method of control parameters of electro-acoustic transducers of the piezoelectric type, composed of an acoustic antenna arrays by electrical measurements is described. A convenient practical implementation of this method by determining the integral of active component of conductivity (area under curve) is proposed .

Keywords: acoustic antenna array, electro-acoustic transducer, piezoelectric element, control of parameters

The article discusses the possibility of using LabVIEW to interact with the computer's sound card to create a hardware-software complex of measurement to determine the parameters of the piezoceramic elements . The results of development and experimental research .

Keywords: sound card, LabVIEW, hardware-software complex, piesoceramic element

Research the influence of temperature on some properties piezomaterials DTN system. The mathematical processing of the experimental results conducted. Determined analytical dependences for the purpose of creating a look-up table.

Keywords: piezomaterial, temperature, analytical dependence

In article ratios for determination of sensitivity of a piezoceramic transducers are received. The effective control method of sensitivity on electric measurements is offered

Keywords: piezoceramic transducers, sensitivity, electric measurements

In article the hardware-software complex created on the basis of widespread software products is considered. The environment of programming of LabVIEW is used. Results of the pilot studies conducted by means of the developed complex are presented.

Keywords: hardware-software complex, LabVIEW, piezoceramic element, the frequency response of conductivity

It is offered to execute approximation by a direct line of values of the active component admittance of piezoresonators in the field of two adjacent points to level 0,5 from the maximum value for reduction error of determination of Q-factor by discrete values of the frequency response. Results of computer simulation and experimental research are provided

Keywords: The piezoresonator, Q-factor, the frequency response of conductivity, measurement in the discrete values

 An analysis of new methods and means for a mesurement of parameters of piezoelectric ceramic elements and materials is carried out. These methods and means are based on a digital principle of the construction of devices. An impuls with a linear frequncy modulation therein is used as an signal for exciting. Results of experimental studies on this subject are represented for discussion.     

Keywords: piezo ceramic element, piezo, methods and means of measurement, digital signal processing

An estimate of the frequency discretization interval was obtained in solving diagnostic problems of a piezoceramic element by means of different methods based on measuring the active component of conductivity in a number of discrete points. This allows avoiding precision loss and, at the same time, reducing the number of measurements and computational operations.

Keywords: Piesoceramic element, Q-factor, active component of conductivity

The results of computational experiments to determine the characteristics of the porous piezoelectric ceramics based on the methodology, including the effective modules method, simulations of representative volumes on a simple random method and the method of Witten-Sander, finite element method to solve static piezoelectric problems for heterogeneous composite media and the accounting of inhomogeneous polarization near the pores are presented. A comparison of the results of computer simulation with the known experimental data for the porous material PZT-4 and its analogs is realized. It is concluded that the accounting of inhomogeneous polarization in the vicinity of porous provide the better agreement between numerical results and large number of known experimental data. Thus, for most effective constants the smallest errors are obtained for a representative volume of the porous piezoelectric material, constructed by Witten-Sander method.

Keywords: piezocomposite, porous piezoelectric ceramics, inhomogeneous polarization, mathematical modelling, models of representative volumes, finite element method, effective moduli

Assesses the performance of common and new methods for determining the parameters of piezoelectric elements using hardware and software developed by means of LabView.

Keywords: control of piezoceramic elements, methods for determining the parameters, LabView, production, productivity.

Information about authors of issue №1 (2013)

Keywords: authors

  The approximate formulas for determination of planar electromechanical force factor and piezomodule in the disk-form samples without Poisson coefficient evaluation of the smallest (first) frequency equation root are derived. It simplifies procedure of measurements because measurement of frequency of the first overtone isn't required.

Keywords: piezomaterial, disk, planar electromechanical force factor, piezomodule, Poisson coefficient

The new method of piezomodule determination of piezoceramic element is offered. It is implemented in devices without memory elements and allows to form the output electrical signal of the corresponding piezomodule automatically right after measurements.

Keywords: piezomodule, piezoceramic element, active component of conductivity, derivative, automated devices.

Information about authors of issue №3 (2012)

Keywords: authors

Information about authors of issue №2 (2012)

Keywords: authors