Перегляд за Автор "Bolyukh, V. F."
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Документ A ballistic laser gravimeter for a symmetrical measurement method with the inductive-dynamic catapult and auto-seismic vibration preventing(State Research Center of the Russian Federation, 2016) Bolyukh, V. F.; Omelchenko, A.; Vinnichenko, A. I.A ballistic laser gravimeter (BLG) with a symmetrical measurement method of the gravity acceleration (GA) is considered. Special treatment is given to the problem of eliminating the measurement error due throw of the catapult when it speeds up the test body (TB). It is possible to decrease the indicated errors thanks to the use of the induction and dynamic catapult. However, a short-term boost catapult generates vibrations of the basement (i.e. a pillar) and the mechanical elements of the gravimeter, what causes auto-seismic (i.e. recoil-related) component of the measurement error. To reduce them it is proposed to launch the TB with the help of a massive platform, installed on a light spring. It is shown, that the considered BLG can provide auto-seismic component of the measurement error of less than 1 μGal. With the reduction of the light spring constant the auto-seismic component of GA measurement uncertainty is reduced. The value of this measurement error can be reduced by the use of damping in the system of BG protection from auto-seismic fluctuations. A concept of BLG with induction-dynamic catapult for symmetric method of gravitational acceleration measuring is presented. The concept is based on using electromagnetic compensator of stiffness.Документ Comparative analysis of constructive types of combined linear pulmonary electromechanical converters(Симфонія форте, 2018) Bolyukh, V. F.; Kocherga, O. I.Документ Concept of an induction-dynamic catapult for a ballistic laser gravimeter(Springer Science+Business Media New York, 2014) Bolyukh, V. F.; Vinnichenko, A. I.A design is proposed for an inductive-dynamic catapult in a ballistic laser gravimeter with a fixed inductor and an electrically conducting armature that moves together with the test object along a vertical axis. The catapult ensures improved accuracy of the gravimeter through direct conversion of electrical into kinetic energy. The electrical circuit of the catapult provides two successive current pulses to the inductor for launching and braking of the armature during the operating cycle.Документ Effect of self-seismic oscillations of the foundation on the readout of a ballistic gravimeter with an induction-dynamic catapult(Springer Science+Business Media New York, 2015) Bolyukh, V. F.; Omel’chenko, A. V.; Vinnichenko, A. I.A mathematical model is developed for the vertical oscillations produced in the base–foundation system of a laser ballistic gravimeter with an induction-dynamic catapult and a symmetric configuration for measuring the acceleration of gravity. Analytic expressions are obtained for the force pulse acting on the foundation during acceleration of the test body that describe the oscillations in the mechanical system of the ballistic laser gravimeter. The effects of the measurement duration and the damping coefficient of the foundation on the results of measurements of the acceleration of gravity are studied.Документ Efficiency of multi-armature linear pulse electromechanical power and speed converters(Національний технічний університет "Харківський політехнічний інститут", 2024) Bolyukh, V. F.; Kocherga, O. I.Introduction. High-speed linear pulse electromechanical converters (LPEC) provide acceleration of the executive element in a short active section to high speed with significant displacement, while power-purpose LPECs create powerful power impulses of the executive element on the object of influence with minor movements. One of the areas of improvement of LPEC is the creation of multi-armature structures. Methodology. To analyze the electromechanical characteristics and indicators of LPEC, a mathematical model was used, which takes into account the interconnected electrical, magnetic, mechanical and thermal processes that occur when connected to a pulse energy source with a capacitive energy storage. The main results of the calculations were performed in the COMSOL Multiphysics software environment and confirmed by experimental studies in laboratory conditions. Results. The features of the electromechanical processes of multi-armature LPECs are established and their indicators are determined. With the help of efficiency criteria, which take into account electrical, power, speed and magnetic indicators in a relative form with different options for their evaluation strategy, it was established that multi-armature LPECs for power purposes have increased efficiency, and for high-speed LPECs the use of multiarmature configurations is impractical. The conducted experimental studies confirm the reliability of the calculated results. Originality. It has been established that almost all multi-armature LPECs for power purposes have higher efficiency compared to a converter with one armature, and for high-speed LPECs it is advisable to use traditional LPECs with one armature. Practical value. On the basis of multi-armature LPECs, models of an electromagnetic UAV catapult, a magnetic pulse press for ceramic powder materials, an electromechanical device for dumping ice and snow deposits from a power line wire, a device for destroying information on a solid-state digital SSD drive have been developed and tested.Документ Energy processes in a linear pulse electromechanical converter(ТОВ "Планета-Прінт", 2021) Bolyukh, V. F.; Kocherga, A. I.Документ High-Efficiency Impact Electromechanical Converter(Всероссийский электротехнический институт им. В. И. Ленина, 2011) Bolyukh, V. F.; Luchuk, V. F.; Rassokha, M. A.; Shchukin, I. S.An algorithm for choosing the parameters of the impact electromechanical converter based on the genetic algorithms and the flexible polyhedron method joint use is developed. The spatial temporal distribu tion of integral and local electrodynamics forces that act on the accelerated anchor is found.Документ Influence of External Electromagnetic Screen on Efficiency of Impact Electromechanical Converter of Disk Configuration(Всероссийский электротехнический институт им. В. И. Ленина, 2010) Bolyukh, V. F.; Rassokha, M. A.Based on a mathematical model, the influence of the disk and cylindrical parts of the outside of the electromagnetic screen on the efficiency of a given electromechanical converter taking into consideration the electrodynamics that acts on them is revealed. The basic theoretical concepts and reliability of the math ematical model are confirmed by experimental research.Документ Influence of parameters of active elements on indicators of electromechanical converter of electrodynamic type(Національний технічний університет "Харківський політехнічний інститут", 2019) Bolyukh, V. F.; Kashanskiy, Yu. V.; Shchukin, I. S.Документ Influence of pulse excitation on electromechanical indicators of a linear pulse converter of electrodynamic type(Національний технічний університет "Харківський політехнічний інститут", 2020) Bolyukh, V. F.; Kashanskyi, Y. V.; Shchukin, I. S.Документ Influence of the form of pulse of excitation on the speed and power indicators of the linear pulse-induction electromechanical converter(Симфонія форте, 2019) Bolyukh, V. F.; Kashanskyi, Yu. V.Документ The Influence of the Parameters of a Ferromagnetic Shield on the Efficiency of a Linear Induction-Dynamic Converter(Всероссийский электротехнический институт им. В. И. Ленина, 2015) Bolyukh, V. F.; Oleksenko, S. V.The influence of the geometrical parameters of a ferromagnetic shield on the operation of a linear induction-dynamic converter was investigated with the help of the integral efficiency parameter. Values of geometrical parameters of the shield with the best converter performance for different means of determining key indicators were obtained by the local optimization method. Experiments have proven that, depending on the geometrical parameters, the ferromagnetic shield increases the armature speed up to 47%, decreases the maximum current in the inductor down to 35%, and increases the time to peak current up to 21% as com pared with the converter without the ferromagnetic shield. Satisfactory concurrence was obtained between experimentally measured and calculated parameters of the linear induction-dynamic converter.Документ Investigation of linear impulse electromechanical converter(NTU "KhPI", 2017) Bolyukh, V. F.; Kocherga, O. I.; Shchukin, I. S.Документ Krioblast™, a systemfor kinetic vitrification byhyperfast cooling: applications for reproductive & stem cells(Elsevier Inc., 2013) Katkov, I. I.; Bolyukh, V. F.; Liu, Y.; Wu, D.; Snyder, E. Y.; Agarwal, S.Документ The project analysis of induction thruster parameters for the field mortaring(Національний університет оборони України ім. Івана Черняховського, 2010) Chemerys, V. T.; Bolyukh, V. F.; Mashtalir, V. V.Документ Reduction of the auto seismic component of error of a ballistic laser gravimeter by excitation of an inductiondynamic catapult from an AC voltage source(Національний науковий центр "Інститут метрології", 2021) Bolyukh, V. F.; Vinnichenko, A. I.; Omelchenko, A.The purpose of the study is to analyse the influence of the excitation of an induction-dynamic catapult of a ballistic laser gravimeter from an AC voltage source at different frequencies on electromechanical indicators that provide a reduced value of the auto seismic component of error in measuring the gravitational acceleration g due to a decrease in the recoil force. A mathematical model of the gravimeter catapult when excited from an AC voltage source is proposed, taking into account the interrelated electrical, magnetic and mechanical processes. The nature of the electromechanical processes in the catapult of the gravimeter with such excitation has been established. It is shown that a phase shift occurs between the currents in active elements, as a result of which positive (repulsive) pulses of the electrodynamic force alternate with negative (attractive) pulses of force. A criterion for the efficiency of the gravimeter catapult has been introduced, taking into account the maximum value of push of the test body at the smallest values of the electrodynamic force and current of the inductor winding. It was found that the highest efficiency of the gravimeter catapult is provided at a frequency of 250 Hz, at which the catapult efficiency is 3.5 times higher than at a frequency of 50 Hz. It is shown that the transition from the method of excitation of an induction-dynamic catapult with one short pulse to excitation from an AC voltage source makes it possible to reduce the uncertainty in measuring the gravitational acceleration.Документ Studies of magnetic-pulse press for ceramic powders(Національний технічний університет "Харківський політехнічний інститут", 2019) Bolyukh, V. F.; Kashanskyi, Y. V.; Shchukin, I. S.; Shchukina, L. P.Документ Study of a linear pulse electromechanical converter with a double anchor(Національний технічний університет "Харківський політехнічний інститут", 2019) Bolyukh, V. F.; Kashanskyi, Yu. V.; Shchukin, I. S.Документ Temperature field in the vacuum chamber of a ballistic gravimeter(Springer Science+Business Media, Inc., 2012) Bolyukh, V. F.; Vinnichenko, A. I.A mathematical model for the temperature field of a ballistic gravimeter is developed based on a thermal conductivity boundary value problem to be solved by the finite element method. Genetic algorithms and the Nelder-Mead method are used to develop a way for synthesizing the parameters of electric heaters to reduce the temperature gradients inside the vacuum chamber of a ballistic gravimeter and to improve its technical parameters.Документ Theoretical and experimental study of linear impulse induction type electromechanical converter(Симфонія форте, 2017) Bolyukh, V. F.; Kocherga, O. I.