Academic literature on the topic 'Тепловий шум'
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Journal articles on the topic "Тепловий шум"
Демежко, Дмитрий Юрьевич, Богдан Дмитриевич Хацкевич, and Мансур Габдрахимович Миндубаев. "КВАЗИСТАЦИОНАРНЫЙ ЭФФЕКТ СВОБОДНОЙ ТЕПЛОВОЙ КОНВЕКЦИИ В ВОДОНАПОЛНЕННЫХ БУРОВЫХ СКВАЖИНАХ." Izvestiya Tomskogo Politekhnicheskogo Universiteta Inziniring Georesursov 332, no. 7 (July 15, 2021): 131–39. http://dx.doi.org/10.18799/24131830/2021/7/3271.
Full textДемежко, Дмитрий Юрьевич, Богдан Дмитриевич Хацкевич, and Мансур Габдрахимович Миндубаев. "ОЦЕНКА ТЕМПЕРАТУРНОГО ШУМА СВОБОДНОЙ ТЕПЛОВОЙ КОНВЕКЦИИ В ВОДОНАПОЛНЕННЫХ БУРОВЫХ СКВАЖИНАХ ПО ЭКСПЕРИМЕНТАЛЬНЫМ ДАННЫМ." Izvestiya Tomskogo Politekhnicheskogo Universiteta Inziniring Georesursov 331, no. 8 (August 24, 2020): 136–43. http://dx.doi.org/10.18799/24131830/2020/8/2775.
Full textМашкина, Екатерина Сергеевна. "Спектральный анализ тепловых флуктуаций в переходных областях предплавления KI." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 22, no. 2 (June 25, 2020): 238–44. http://dx.doi.org/10.17308/kcmf.2020.22/2837.
Full textSokol, G., L. Nakashidze, and S. Kirichenko. "СИСТЕМЫ ЭНЕРГООБЕСПЕЧЕНИЯ С АЛЬТЕРНАТИВНЫМИ ИСТОЧНИКАМИ ЭНЕРГИИ: БЕЗОПАСНОСТЬ ФУНКЦИОНИРОВАНИЯ АКУСТИЧЕСКИХ ИСТОЧНИКОВ." Vidnovluvana energetika, no. 3(58) (September 25, 2019): 14–20. http://dx.doi.org/10.36296/1819-8058.2019.3(58).14-20.
Full textВершовский, А. К., С. П. Дмитриев, Г. Г. Козлов, А. С. Пазгалев, and М. В. Петренко. "Проекционный спиновый шум в оптических квантовых датчиках на тепловых атомах." Журнал технической физики 90, no. 8 (2020): 1243. http://dx.doi.org/10.21883/jtf.2020.08.49533.438-19.
Full textСлядников, Е. Е., and И. Ю. Турчановский. "Кинетическая модель наноструктурирования аморфной металлической пленки, инициированного миллисекундным тепловым импульсом." Журнал технической физики 90, no. 7 (2020): 1136. http://dx.doi.org/10.21883/jtf.2020.07.49448.299-19.
Full textЖаднов, Н. О., Д. С. Крючков, К. С. Кудеяров, Г. А. Вишнякова, А. В. Масалов, К. Ю. Хабарова, and Н. Н. Колачевский. "КОМПЕНСАЦИЯ ТЕПЛОВОГО РАСШИРЕНИЯ И ТЕПЛОВЫХ ШУМОВ ОПОРНЫХ ОПТИЧЕСКИХ РЕЗОНАТОРОВ." Nanoindustry Russia 14, no. 7s (October 3, 2021): 737–39. http://dx.doi.org/10.22184/1993-8578.2021.14.7s.737.739.
Full textЖелнин, Максим Сергеевич, Maksim Sergeevich Zhelnin, Олег Анатольевич Плехов, O. A. Plekhov, Лев Юрьевич Левин, and Lev Yur'evich Levin. "Моделирование температурного отклика системы чугун-бетон при активном тепловом неразрушающем контроле." Математическое моделирование 31, no. 3 (2019): 23–40. http://dx.doi.org/10.1134/s023408791903002x.
Full textКрысько, Вадим Анатольевич, Ирина Владиславовна Папкова, Татьяна Владимировна Яковлева, Алёна Александровна Захарова, Максим Викторович Жигалов, and Антон Вадимович Крысько. "ДИНАМИКА ГЕОМЕТРИЧЕСКИ И ФИЗИЧЕСКИ НЕЛИНЕЙНОГО ЧУВСТВИТЕЛЬНОГО ЭЛЕМЕНТА НАНОЭЛЕКТРОМЕХАНИЧЕСКОГО ДАТЧИКА В ВИДЕ НЕОДНОРОДНОЙ НАНОБАЛКИ, НАХОДЯЩЕЙСЯ В ТЕМПЕРАТУРНОМ И ШУМОВОМ ПОЛЯХ." Izvestiya Tomskogo Politekhnicheskogo Universiteta Inziniring Georesursov 331, no. 5 (May 15, 2020): 87–96. http://dx.doi.org/10.18799/24131830/2020/5/2639.
Full textFilippova, Elena O., Kirill Yu Vinogradov, Roman V. Shafigulin, and Andzhela V. Bulanova. "Сравнение адсорбционных свойств мезопористых кремнеземов, допированных диспрозием, модифицированных медью и серебром, методом обращенной газовой хроматографии." Сорбционные и хроматографические процессы 20, no. 6 (December 21, 2020): 696–706. http://dx.doi.org/10.17308/sorpchrom.2020.20/3137.
Full textDissertations / Theses on the topic "Тепловий шум"
Рибальченко, І. А. "Аспекти підвищення енергоефективності функціонування системи централізованого теплопостачання споживачів, приєднаних до КППВ ПАТ "СНВО"." Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75762.
Full textЛуб'яний, Л. З., Микола Євгенович Оверко, and І. О. Чичибаба. "Охолоджуваний широкосмуговий підсилювач з низьким рівнем шумів." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/47250.
Full textЕвсеенко, Олег Николаевич, and Петр Алексеевич Качанов. "Реализация управления суточным температурным режимом помещения с помощью ШИМ-регулятора с предсказанием." Thesis, Бондаренко М. О, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/49263.
Full textЕвсеенко, Олег Николаевич, and Анатолий Иванович Гапон. "Применение метода ШИМ-регулирования с предсказанием к управлению температурным полем объекта." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48408.
Full textКучменко, Д. М. "Фізичні процеси в елементах спінтроніки: теплові ефекти в системах феромагнітних наночастинок." Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/85596.
Full textБондаренко, И. Н. "Об использовании криогенных резонаторов для снижения ЧМ шумов в СВЧ генераторах." Thesis, Иркутск. Восточно-Сибирский НИИФТРИ, 1991. http://openarchive.nure.ua/handle/document/8203.
Full textЕвсеенко, Олег Николаевич, and Сергей Михайлович Савицкий. "Описание метода управления тепловым объектом с распределёнными параметрами с помощью широтно-импульсной модуляции и предсказывающего фильтра." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2013. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48405.
Full textProposed a method of control thermal objects, obtained the acceleration curves of an object, calculated the maximum allowable sampling period of transition with the theorem of Kotelnikov, chosen the sampling frequency, conducted experiments for control the temperature of inertial object.
Євсеєнко, Олег Миколайович. "Моделі та методи енергозберігаючого керування розподіленими тепловими об'єктами з використанням систем з прогнозуючим фільтром." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33815.
Full textThesis for granting the Degree of Candidate of Technical sciences (PhD degree) in specialty 05.13.03 «Management systems and processes» (151 – Automation and computer-integrated technologies) National Technical University «Kharkiv Polytechnic Institute» of Ministry of Education and Science of Ukraine, Kharkiv, 2018. The thesis is devoted to the analysis of distributed thermal objects control using prediction systems to determine their disadvantages and development of new energy-efficient heat control methods for administrative and office buildings. The problems of thermal objects energy-saving control development are considered. Distributed thermal objects are analyzed. The author suggests a classification of thermal objects according to the number of used energy sources, structure, working mode of the heating equipment. Existing synthesis methods of control systems for distributed thermal objects and thermal energy control systems are investigated. The main factors affecting temperature in premises are considered. The regulators with prediction are analyzed. The existing tendencies in the development of energy saving control methods applied in heat supply systems are explored. It has been found that existing temperature controllers with prediction maintain temperature in the premises in the range from +19 °C to +22 °C with accuracy ± 1 °C. It has also been demonstrated that regulators based on weather-dependent, PID-, on–off control laws reduce energy consumption by 15%, using regulators with prediction reduces power consumption by 25-35%. Perspective of energy-saving methods control of distributed thermal objects with prediction is substantiated. The author has carried out an analysis of the behavior and properties of distributed thermal control objects. The requirements for the synthesis of energy-saving thermal objects control laws are formulated. Feasible region, initial and boundary conditions at the initial stage of research, modeling of the object for finding an effective solution have been determined. Prerequisites and constraints for the development of methods of energy saving management are theoretically justified. A classification of distributed thermal objects regulators, depending on the ratio of the transport delay time to the time of transient processes, has been carried out. The author developed an algorithm for solving the problem of calculation the heat distribution inside an office premises. A model of the room in the ANSYS environment is created. The method of dividing the structure of the premises into n objects with lumped parameters with the same properties of space is developed. The basic problems of distributed thermal objects control are considered. The control method of thermal object with distributed parameters using a step function have been further developed. Formulas that allow to refuse from an object with lumped parameters control to an object with distributed parameters control has been developed. The author developed a method of thermal object with distributed parameters control using pulse-width modulation with prediction filter, where the target function vector is formed from the control error at the current time and the predicted mismatch error, that is defined as the difference between the given temperature and the temperature of the regulator model. A microcontroller system of heat supply control, that consists of a subsystem of getting information, a subsystem of issuing control influence, central controller and control panel have been developed. It has been established that in order to identify the refusal of the subsystem of information gathering and the issuance of controlling influence, they must be closed in the circle. The algorithms of diagnosing the data linesї efficiency, controlling the temperature of the object and recording the transient characteristics of the control object are developed. It is established that the implementation of control influence in the form of a stepped function can be carried out with the help of a parallel connection of heaters of various power. It is suggested to control the temperature of a thermal object with pulse-width modulation, in which the control element operates in key mode due to the disadvantages of implementing a control effect in the form of a stepped function. On the basis of measurements on a real object, a complete three-dimensional model of the room taking into account external contours and exact internal geometry was constructed. Volumetric netting of hexahedrons was built. Boundary conditions taking into account the heating system, ventilation system, heat conductivity of walls, the temperature of the outside air were specified. Transient curves of influence on the room of external temperature, ventilation with air temperature equal to 20 °C, a 1.75 kW power heater temperature were obtained. A program macro (udf file) on C language in the ANSYS environment for the experiment was created. The conditions for the simulation: the external temperature varies from minus 7 °C to plus 5 °C, depending on the time of day, the initial air temperature in the room +18 °C, the speed of intake and exhaust ventilation 0.018 kg/s, the temperature of the intake ventilation + 20 °C were specified. An experiment to maintain a setting daily temperature mode in the room: from 00:00 to 08:00 + 10 °С, from 9:00 to 17:00 + 18 °С, from 18:00 to 00:00 + 15 ° С was conducted. Method of PWM regulation with prediction to the most common: twoposition regulation with hysteresis ± 2 ° C, two-position regulation without hysteresis and PID-regulation were compared. According to the simulation results, the PWM control with prediction the highest accuracy was exhibited. The least effective method was two-position regulation with hysteresis equal to ± 2 °C, which due to the inertia of the thermal object exceeded the given temperature in the room. The total time of the heater operation during the day is obtained. The methods of temperature control with the PID regulation and PWM with prediction control roughly the same time of operation of the heater (39.89% vs. 39.24%) were showed. According to the monthly cost of 1 kW of electricity, the total operating time of t he heater, heater power for the heating costs for rooms with one-shift operating mode without a weekend for day and month modes were calculated. It has been established that the refusal of continuous operation of the heater and using regulator with prediction will reduce the operating time of the heating equipment by 56%: from 24 to 10.5 h. According to the simulation results, the temperature modes of the premises that give the source information in which points of the room it is necessary to place the temperature sensors are obtained. For experimental studies, a hollow steel rod with dimensions: length 35.5 cm, outer diameter 3.2 cm, internal diameter 2.8 cm, wound on one end with a heater length of 8.2 cm from the beginning of the tube with a resistance of 19 Ohms, and sterilizer GP-80 were selected. For a real experiment, an experimental installation based on the ATMega16 microcontroller, sensors DS18B20, microchip memory AT24C256B-PU was used. A program of the object temperature control on the ATMega16 microcontroller is written. For each of the selected control objects transition curves were obtained and experiments of maintaining the specified temperature conditions were carried out. The correctness of the theoretical prerequisites for the development of the hardware and software complex was confirmed by the results of the research. The problem of finding the optimal ratio of heater power parameters and forecasting interval using the least squares method is solved. It was found that to reduce the control error, the control impulse pulse should be made at the beginning of the program control interval, taking into account the amount of overshoot. The results of scientific research were introduced into the practice of designing systems for automatic control of thermal objects, technological processes of the enterprise VO OWEN (Kharkiv). The materials of the dissertation are used in lecture courses "Theory of automatic control" and "Software tools of control systems" at the department automation and control systems NTU "KhPI".
Євсеєнко, Олег Миколайович. "Моделі та методи енергозберігаючого керування розподіленими тепловими об'єктами з використанням систем з прогнозуючим фільтром." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33812.
Full textThe thesis on Candidate Degree in Technical Sciences: Specialty 05.13.03 – management systems and processes. – National Technical University «Kharkov Polytechnic Institute», Kharkov, 2018. The thesis is devoted to the development and improvement of energy-efficient control methods of distributed thermal objects for using in heat supply systems. The thesis proposes a control method of thermal objects with distributed parameters with prediction filter, where the PWM signal is used as the control action. The method of controlling thermal objects with distributed parameters with prediction using the step function as control effect has been further developed. The paper presents a formalized description of predictive control methods that allow to control temperature of an object with distributed parameters instead of object with lumped parameters temperature control at n points with p heaters. A simulation room model based on measurements of the room and the finite element method in the ANSYS environment was constructed. Using developed predictive controller, experiments of maintaining the assigned daily temperature mode were carried out. The developed method of PWM predictive control with continuous control, two-position, PID-control was compared. Experiments of maintaining the set temperature of the steel hollow rod and the sterilizer chamber using the developed software and hardware complex, based on the microcontroller AtMega 16 and PWM with prediction control method, were carried out.
Бабенко, Олена Григорівна. "Дослідження умов праці та рівня травматизму під час виробництва теплової енергії." Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/4992.
Full textUA : Приведена оцінка рівня охорони праці на підприємствах вироблення теплової енергії, встановлені причини виникнення нещасних випадків на підприємстві, встановлені коефіцієнти частоти та важкості травматизму за останні 5 років. Проведено дослідження умов праці на підприємствах вироблення теплової енергії, визначені умови праці робітників та надані рекомендації по поліпшенню умов праці. Розроблена та досліджена система глушників, що дозволяє знизити рівень аеродинамічного шуму.
EN : The assessment of the level of labor protection at the enterprises of heat energy generation is given, the causes of accidents at the enterprise are established, the coefficients of frequency and severity of injuries over the last 5 years are established. A study of working conditions at heat power generation enterprises was carried out, working conditions of workers were determined and recommendations were given for improving working conditions. A muffler system has been developed and studied, which allows to reduce the level of aerodynamic noise.
Conference papers on the topic "Тепловий шум"
Тупов, Владимир Борисович, and Айнур Булатович Мухаметов. "DEPENDENCE OF THE NOISE LEVEL OF DRY FAN COOLING TOWERS ON THE POWER OF THERMAL POWER PLANTS." In Наука. Исследования. Практика: сборник избранных статей по материалам Международной научной конференции (Санкт-Петербург, Апрель 2021). Crossref, 2021. http://dx.doi.org/10.37539/srp296.2021.36.86.012.
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