Modeling of Electromechanical Characteristics of Piezoresonance Pressure Sensors with Membrane Control of the Interelectrode Gap of a Piezoelectric Element
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2018, Vol 0, Issue 74
Abstract
The paper considers the issues of increasing the simulation accuracy of perspective piezoresonance overpressure sensors with membrane control of the piezoelectric element interelectrode gap. A comparative analysis of elastic membrane elements characteristics made of alloys two different types, calculated by the existing methods for flat and corrugated membranes, and obtained by simulation in the COMSOL Multiphysics system is carried out. It is shown that the existing analytical methods for calculating membrane elements are of an approximate nature and allow only rough estimates to be obtained, since they do not take into account all the structural features of the elastic elements and are adapted to the experimental designs of sensors with a specific geometry. The elastic characteristics of the measuring diaphragm of pressure sensors with a variable interelectrode gap of excitation are calculated. The capacitance of the interelectrode gap of the membrane pressure sensor is determined. Numerical simulation of the stressed-deformed state of the corrugated membrane in the COMSOL Multiphysics software package was carried out. The operating characteristics of the piezoresonance sensor of excess pressure with variable inter electrode gap of excitation are studied. The developed three-dimensional model of the sensor of excessive pressure for medical applications makes it possible to significantly improve the accuracy of characteristics calculations of the stress-strain state of elements during their micro-displacements, remove the limitations on the structural features of the membrane and its attachment methods, and significantly shorten the time and costs for developing measuring transducers. The obtained results provide ample opportunities to optimize the design of the sensor, improve its accuracy and reduce the impact on it of destabilizing environmental factors.
Authors and Affiliations
A. Taranchuk, S. Pidchenko
Conditions of existence and classification of the feedback in electronic circuits
The article analyzes the state of matter on existence and classification of feedback in electronic circuits. It is shown that the presence of dependent sources is necessary but it is not sufficient condition for the feed...
Driver's condition control devices
The article describes the various types of biotechnical systems of transport security, that often called by general title "Antison. Their main disadvantage is the uncertainty of detecting drowsiness phase of driver’s sta...
Determination of reliability parameters of radioelectronic devices determined by thermal modes
Statement of the problem. The reliability is important (and sometimes crucial) functional characteristic for RED. So it is necessary to analyze the impact on them of destabilizing external factors - mechanical, temperatu...
A simple lower bound of estimating of the checking symbols quantity
Based on boundary of minimum code distance has been found the boundary value of checking symbols in block codes with a given number of correcting errors. Has been ana- lyzed the derived simple bound in relation to some...
Digital Signal Extraction by Means of Nonlinear Stochastic Filtration
The results of noise immunity analysis for digital communication systems using methods of nonlinear filtering are given. Nonlinear filtration is based on stochastic resonance effect. The stochastic resonance is given to...