Now showing items 221-240 of 7830

    • Kelvin probe’s stray capacitance and noise simulation 

      Danyluk, S.; Dubanevich, A. V.; Gusev, O. K.; Svistun, A. I.; Tyavlovsky, A. K.; Tyavlovsky, K. L.; Vorobey, R. I.; Zharin, A. L. (БНТУ, 2014)
      Stray capacitance effects and their influence on Kelvin probe’s performance are studied using mathematical and computer simulation. Presence of metal surface, even grounded, in vicinity of vibrating Kelvin probe produces the additional stray signal of complex harmonic character. Mean value and amplitude of this stray signal depends mostly on the ratio of stray and measurement ...
      2014-08-25
    • Knock Reduction Measures in the Gas Fuelled Internal Combustion Engine 

      Szwaja, S. (БНТУ, 2020)
      Studies on the influence of applying various technologies for combustion knock reduction have been presented in the paper. Among others, investigation concerning the following: overexpanded cycle, variable valve timing, internal and exhaust gas recirculation, leaning the combustible mixture and cooling the incylinder charge were of the interest. The research works were focused ...
      2020-08-04
    • Kомпьютерная модель обтекания летательного аппарата воздушными потоками и расчет его аэродинамических характеристик 

      Яцкевич, Ю. В.; Кожедуб, Ю. В. (БНТУ, 2015)
      В работе описывается оригинальная полуэмпирическая модель турбулентного течения воздуха в пограничном слое на поверхности летательного аппарата. На основе этой модели разработана компьютерная система, позволяющая моделировать аэродинамические процессы вокруг летательного аппарата и по результатам моделирования рассчитывать его аэродинамические характеристики. Эти характеристики ...
      2015-08-04
    • Lake detection algorithm in point clouds of the lidar image based on three-dimensional convolutional neural network 

      Xu, Shanshan (БНТУ, 2022)
      An algorithm for detecting lakes in a point cloud of a lidar image based on a three-dimensional convolutional neural network is proposed. The contours of the lakes were extracted from the point clouds of the lidar image and their geometric characteristics were determined using the chain code algorithm. The accuracy of the proposed algorithm for identifying lakes from clouds of ...
      2022-06-09
    • Laser Research of the Fuel Atomization Process of Internal Combustion Engines 

      Stezycki, P.; Kowalski, M.; Jankowski, A.; Slawinski, Z. (БНТУ, 2020)
      The paper presents test methods (mechanical, electrical and optical) for the fuel spray research in combustion engines. Optical methods, imaging and non-imaging can be used in laboratory and engine tests. Imaging methods include flash photography and holography. Their use is limited to testing droplet dimensions larger than 5 μm. Imaging methods have an advantage over non-imaging ...
      2020-02-04
    • The latest developments in control systems for chemically bonded sand continuous mixers 

      Fenyes, L. M. (БНТУ, 2005)
      Fenyes, L. M. The latest developments in control systems for chemically bonded sand continuous mixers / L. M. Fenyes // Литье и металлургия. - 2005. – № 2 (34), [ч.2]. - С. 184 - 185.
      2016-03-23
    • Low-Frequency Admittance of Capacitor with Working Substance “Insulator – Partially Disordered Semiconductor – Insulator” 

      Poklonski, N. A.; Anikeev, I. I.; Vyrko, S. A. (БНТУ, 2021)
      The study of the electrophysical characteristics of crystalline semiconductors with structural defects is of practical interest in the development of radiation-resistant varactors. The capacitance-voltage characteristics of a disordered semiconductor can be used to determine the concentration of point defects in its crystal matrix. The purpose of this work is to calculate the ...
      2021-10-15
    • MAGNAHOT - новое слово в НОТ-ВОХ-технологии 

      Милехин, В. А. (БНТУ, 2006)
      Милехин, В. А. MAGNAHOT - новое слово в НОТ-ВОХ-технологии / В. А. Милехин // Литье и металлургия. - 2006. – № 3. - С. 98 - 100.
      2016-03-10
    • Maintaining the Sustainable Energy Systems: Turning from Cost to Value 

      Pysmenna, U. Yе.; Trypolska, G. S. (БНТУ, 2020)
      The economies of the world are influenced by the rapidly changing global energy policy agenda. Understanding energy trends implications in the long-term perspective is crucial for responsible and informed sustainability-policy making, with respect to transformations required to enhance the security of energy supply, resource efficiency and affordability, as well to as transformations ...
      2020-02-05
    • Materials and developments of the company Heinrich Wagner Sinto Maschinenfabrik GmbH 

      Wagner, Heinrich (БНТУ, 2019)
      The company Kutes Metall equips its foundry with a SEIATSU molding plant manufactured by Heinrich Wagner Sinto. The special feature of this molding plant. The SEIATSU.plus compaction process which enables different compaction techniques and combinations depending on requirements. In particular, with an occupancy up to the edge of the molding box optimum pressure values and ...
      2019-04-05
    • Mathematical Model of Energy Processes in Industrial Electric Screwdriver 

      Nieoczym, A.; Drozd, K.; Veselik, P. (БНТУ, 2019)
      An electric screwdriver has been designed to work in an automatic cycle on assembly lines. A characteristic feature of the screwdriver is the use of a low power motor in comparison with commonly used devices. The work for tightening a threaded joint takes place at the expense of kinetic energy in components of a drive system and the working screwdriver. It has been proved that ...
      2019-07-04
    • Mathematical Modeling of the Combined Heat Supply System of a Solar House 

      Uzakov, G. N.; Charvinski, V. L.; Ibragimov, U. Kh.; Khamraev, S. I.; Kamolov, B. I. (БНТУ, 2022)
      Today, increasing energy efficiency in residential heating systems, saving fuel and energy resources, and improving the efficiency of using devices based on renewable energy sources is an urgent issue. The purpose of the article is to develop a mathematical model of the heat balance and conduct a theoretical study of one-story rural houses based on the use of solar energy in a ...
      2022-11-11
    • Mathematical modelling of the unmanned aerial vehicle dynamics 

      Stepanov, V. Y. (БНТУ, 2018)
      The article gives a classification of the main components of unmanned aerial vehicle (UAV) systems, gives the areas in which the application of UAVs is actual in practice today. Further, the UAV is considered in more detail from the point of view of its flight dynamics analysis, the equation necessary for creating a mathematical model, as well as the model of an ordinary dynamic ...
      2018-06-12
    • Maximum power point tracking system for photovoltaic station : a review 

      Elzein, Imad A. (БНТУ, 2015)
      В последние годы проявляется растущий интерес к использованию возобновляемых источников энергии, среди которых особое положение занимает солнечная энергия благодаря неисчерпаемости своих запасов. Тем не менее фотоэлектрические станции характеризуются большими капитальными затратами и низкой эффективностью преобразования. Кроме того, вольтамперные характеристики солнечных элементов ...
      2015-12-01
    • Measurement of Steel Structure Elements in the Specialized Module of the IMAGE-SP Image Processing Software 

      Anisovich, A. G. (БНТУ, 2020)
      Grain size is one of the most important characteristics of the microstructure of metals and alloys. Determination of the grain size of steel is regulated by Standart 5639-82 "Steels and alloys. Methods for detection and determination of the grain size". Standart includes determining the grain score by comparison with reference scales, as well as manual measurement methods. The ...
      2020-12-18
    • Measurement of the amplitude of periodic signals using the Fibonacci method 

      Petrushak, V. S. (БНТУ, 2018)
      Development of new methods and high-rate means for converting the amplitude of high-frequency periodic signals into a binary code with high speed for solving problems of industrial tomography, radar, radio navigation, during measurements of amplitude-frequency characteristics, measurement of the amplitude of signal generators is relevant in scientific terms and useful in practical ...
      2018-06-18
    • Measurement of vibration parameters of the waveguide for medical treatment 

      Palevicius, A.; Bubulis, A.; Minchenya, V. (БНТУ, 2011)
      Methods allowing investigation of vibrations of the stainless steel waveguide by combining noncontact techniques with the state-of-the-art multiphysics software are developed. The vibrations of the waveguide, used in nowadays surgery are examined by the aids of the holographic interferometry technique, vibrometer based on Doppler shift of backscattered laser light and the ...
      2012-03-28
    • Measurement stand for study properties of isolation materials using polarization method 

      Zukowski, P.; Koltunowicz, T.; Kozak, Cz.; Kierczynski, K.; Rogalski, P. (БНТУ, 2014)
      The article presents measurement stand, which is used to measure polarization and depolarization currents, using PDC method, in wet transformer oil-impregnated cellulose isolation. Maximum resolution of measured currents reaches 10-15 A. The accuracy of thermal stabilization, in three-electrode capacitor system, comes to 0,001 °C.
      2014-08-25
    • Measurement Stand, Method and Results of Composite Electrotechnical Pressboard-Mineral Oil Electrical Measurements 

      Rogalski, P. (БНТУ, 2020)
      The paper presents a measuring stand designed and built for testing direct and alternating current properties of power transformers basic insulation component i.e. electrotechnical pressboard impregnated with transformer oil. Measurements of direct and alternating current parameters are performed using the frequency domain spectroscopy and polarization depolarization current ...
      2020-09-18
    • Measurements of Periodic Signals Phase Shifts with Application of Direct Digital Synthesis 

      Gula, I. V.; Polikarovskykh, O. I.; Horiashchenko, K. L.; Karpova, L. V.; Melnychuk, V. M. (БНТУ, 2019)
      The development of new methods and high-bit instruments for measuring phase shifts of high-frequency periodic signals with high speed for radar and radionavigation tasks is an actual task. The purpose of this work is to create a new phase shift meter for high-frequency periodic signals based on the double-matching method using direct digital frequency synthesis. On the basis of ...
      2019-06-27