CONTROL OF ENERGY EFFICIENCY IN INDUSTRY AND HOUSING AND COMMUNAL SERVICES
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UDC 004.942, 620.1
Simulation of the influence of tensometric pressure transducer diaphragm defects on its frequency response
O.Y. Bushuev, South Ural State University, Chelyabinsk, Russian Federation, bushuev@init.susu.ac.ru
I.I. Grigoriev, South Ural State University, Chelyabinsk, Russian Federation, igrig90@gmail.com
Ye.S. Korovchenko, South Ural State University, Chelyabinsk, Russian Federation, daganet.74@gmail.com
A.S. Semenov, South Ural State University, Chelyabinsk, Russian Federation, 560101@rambler.ru
Abstract
Tensometric pressure transducer diaphragm defects are considered. Pressure transducer structure finite-element model was developed to analyze the influence of these defects on natural frequencies of the transducer. There are considered following defects: change in the size and shape of the diaphragm (thinning as a result of corrosion, plastic and residual deformation); sticking of foreign objects; change in modulus of elasticity. It was shown that mode shapes and frequencies changes take place in dependence of the defect type. Usual change in frequency is between 0,1 and 4 %. The results of the analysis may be used for method development of pressure transducer technical condition diagnosis.
Keywords
finite-element model, tensometric pressure transducers, natural frequencies, diagnosis of technical condition, fault diagnosis
References
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2. GOST R 8.673-2009 GSI. Datchiki Intellektual’nye i Sistemy Izmeritel’nye Intellectual’nye. Osnovnye Termini i Opredeleniya. [Intellectual Sensors and Intellectual Measuring Systems. Main Terms and Definitions].
3. Henry M.P., Clarke D.W.. The Self-Validating Sensor: Rationale, Definitions and Examples. Control Engineering Practice, 1993, vol. 1, no. 4, pp. 585–610.
4. Bushuev O.Yu., Semenov A.S., Chernyavsky A.O. Study of Dynamical Characteristic of Tensometric Pressure Transducer for the Diagnostics of Its Condition [Issledovanie Dinamicheskoy Kharakteristiki Tenzopreobrazovatelya Davleniya s Tsel’yu Diagnostiki Ego Sostoyaniya]. Datchiki i Sistemy [Sensors and Systems], 2011, no. 4, pp. 21–24.
5. Bogush M.V., Pikalev E.M. Analysis of the Transformation Function of Piezoelectric Transducer of Pressure [Analiz Funktsii Preobrazovaniya P’ezoelektricheskikh Datchikov Davleniya Metodom Konechnikh Elementov]. Izvestiya YUFU. Tekhnocheskie Nauki, 2008, no. 2, pp. 74–84.
6. Kozlov A.I., Pirogov A.V., Stuchebnikov V.M. Modeling SOS Structure-Based Strain Pressure Sensors. Single-Diaphragm Transducers [Modelirovanie Tenzopreobrazovateley Davleniya na Osnove Struktur KNS. Odnomembrannye Preobrazovateli]. Datchiki i Sistemy [Sensors and Systems], 2008, no. 1, pp. 6–11.
7. Kozlov A.I., Pirogov A.V., Stuchebnikov V.M. Modeling SOS Structure-Based Strain Pressure Sensors. Two-Diaphragm Transducers [Modelirovanie Tenzopreobrazovateley Davleniya na Osnove Struktur KNS. Dvukhmembrannye Preobrazovateli]. Datchiki i Sistemy [Sensors and Systems], 2009, no. 8, pp. 50–53.
8. Zarnik M.S., Belavic D., Novak F. Finite-Element Model-Based Fault Diagnosis, a Case Study of a Ceramic Pressure Sensor Structure. Microelectronics Reliability, 2007, vol. 47, pp. 1950–1957.
9. Feng Z., Wang Q., Shida K. Design and Implementation of a Self-Validating Pressure Sensor. IEEE Sensors Journal, 2009, vol. 9, no. 3, pp. 207–218.
Source
Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control, Radio Electronics, 2013, vol. 13, no. 2, pp. 74-81. (in Russ.) (The main)