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The National Academy of Sciences of Ukraine

The Institute of Electrodynamics

About Institute



A.S. Levytskyi1, I.O. Zaitsev2, A.M. Smyrnova3
1,2 – Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine,
3 – Kyiv National University of Trade and Economics,
Kyoto str., 19, Kyiv, 02156, Ukraine
е-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Investigated cylindrical elastic sensor element (ESE) of the force primary converter for the powerful turbogenerators stator tightening prisms core. The method of calculation of tubular ESE is proposed, which allows the design effort design gauges from load changes over a wide range. Analytical relations for calculating the dimensions of the ESE element are determined. Conversion function "force - relative longitudinal strain" with the changing cross sectional area of the element in accordance with Poisson's ratio is obtained. The relative error caused by the nonlinearity of the conversion function is calculated. The analytical dependencies of the information signal on the force in the elastic element for strain-resistive, capacitive and fiber-optic meters are established. References 12, figures 7.
Key words: turbogenerator, stator core, tightening prism, effort, cylindrical elastic sensor element, error, measurements, conversion function.

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6. Liu M., Zhou Z., Tao X., Tan Y. A dynamometer design and analysis for measurement the cutting forces on turning based on optical fiber Bragg Grating sensor. Prociding of the 10th World Congress on Intelligent Control and Automation. July 6-8, 2012, Beiling, Chine. P. 4287–4290. DOI:
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8. Levytskyi A.S., Kobzar K.O., Zajtsev E.O.. Fiber optic force gauges in coupling prisms of turbogenerators based on Bragg gratings. Gidroenergetyka Ukrainy. 2017. № 3-4. P. 22–25. (Ukr)
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