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Academic literature on the topic 'Критерій ефективності системи охолодження'
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Journal articles on the topic "Критерій ефективності системи охолодження"
Makogon, H., O. Akinshin, V. Shchokin, A. Kumpan, A. Ponomarenko, and Ye Shpinda. "ЗАСТОСУВАННЯ МЕТОДІВ ПЕРЕВІРКИ СТАТИЧНИХ ГІПОТЕЗ ДЛЯ ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ ЗАСОБІВ ПОЖЕЖОГАСІННЯ ЗРАЗКА ОВТ." Системи управління, навігації та зв’язку. Збірник наукових праць 4, no. 50 (September 12, 2018): 161–67. http://dx.doi.org/10.26906/sunz.2018.4.161.
Full textПрібилєв, Ю. Б. "Підхід до побудови системи озброєння протиповітряної оборони директивним методом." Наука і оборона, no. 4 (February 13, 2020): 42–46. http://dx.doi.org/10.33099/2618-1614-2016-0-4-42-46.
Full textБошкова, І. Л., А. С. Тітлов, Н. В. Волгушева, Н. О. Колесніченко, and Т. А. Сагала. "Модернізація системи охолодження магнетронів малої потужності." Refrigeration Engineering and Technology 55, no. 3 (July 1, 2019): 158–64. http://dx.doi.org/10.15673/ret.v55i3.1573.
Full textВаракута, В. П., О. О. Кумпан, Т. В. Хліманцов, В. О. Іванов, and Г. В. Заверуха. "Визначення критеріїв і показників ефективності оборонної системи та розроблення моделі сил і засобів оперативно-тактичного угрупування для обґрунтування пропозицій щодо прийняття рішення на оборону." Наука і техніка Повітряних Сил Збройних Сил України, no. 1(38), (March 23, 2020): 13–30. http://dx.doi.org/10.30748/nitps.2020.38.02.
Full textКрашенінін, О. С., and О. О. Шапатіна. "Визначення ефективності перевезень різними транспортними засобами." Інформаційно-керуючі системи на залізничному транспорті 26, no. 2 (July 7, 2021): 3–8. http://dx.doi.org/10.18664/ikszt.v26i2.235237.
Full textШаптала, Д. Є., С. С. Дубровський, and В. Ф. Іродов. "АЛГОРИТМ ЕВОЛЮЦІЙНОГО ПОШУКУ БАГАТОКРИТЕРІАЛЬНИХ РІШЕНЬ ДЛЯ ОБІГРІВУ ВІДКРИТОЇ ПРОМИСЛОВОЇ ПЛОЩАДКИ З ТРУБЧАСТИМИ ГАЗОВИМИ НАГРІВАЧАМИ." Таврійський науковий вісник. Серія: Технічні науки, no. 6 (February 14, 2022): 77–85. http://dx.doi.org/10.32851/tnv-tech.2021.6.10.
Full textЛезік, О. В., А. Ф. Волков, О. А. Токар, and В. Г. Стадніченко. "Сутність, зміст та оцінка ефективності управління підрозділом протиповітряної оборони Сухопутних військ та вогнем в бою." Системи озброєння і військова техніка, no. 2(62), (June 8, 2020): 119–28. http://dx.doi.org/10.30748/soivt.2020.62.15.
Full textМаланюк, Наталія. "ПРОФЕСІЙНА ПІДГОТОВКА МАЙБУТНІХ ФАХІВЦІВ ЗАЛІЗНИЧНОГО ТРАНСПОРТУ: РЕЗУЛЬТАТИ ЕКСПЕРИМЕНТУ." Педагогічні науки: теорія, історія, інноваційні технології 9(103), no. 9(103) (November 30, 2020): 204–13. http://dx.doi.org/10.24139/2312-5993/2020.09/204-213.
Full textЛавренченко, Г. К., М. Б. Кравченко, and Б. Г. Грудка. "Аналіз результатів з’єднання термодинамічних циклів парокомпресорних холодильних машин." Refrigeration Engineering and Technology 55, no. 5-6 (March 28, 2020): 246–54. http://dx.doi.org/10.15673/ret.v55i5-6.1657.
Full textMazurok, A., and M. Vyshemirskyi. "Аналіз умов виникнення термоудару корпусу реактора з урахуванням виконаних модернізацій систем, важливих для безпеки." Nuclear and Radiation Safety, no. 2(66) (June 19, 2015): 16–23. http://dx.doi.org/10.32918/nrs.2015.2(66).03.
Full textDissertations / Theses on the topic "Критерій ефективності системи охолодження"
Петренко, Олександр Миколайович. "Наукові основи вибору оптимальних параметрів та режимів роботи систем охолодження асинхронних тягових двигунів електротранспорту." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/35301.
Full textThesis for the degree of Doctor of Engineering in specialty 05.22.09 "Electric transport " - National Technical University "Kharkiv Polytechnic Institute" MES of Ukraine, Kharkov, 2018. The thesis is devoted to the creation of scientific foundations for the selection of optimal parameters and operating modes for cooling systems for asynchronous traction motors of electric transport. An algorithm for solving the Hamilton-Jacobi-Bellman equation for the problem of the motion of an electric stock on a section of a track with a given profile and a traffic schedule is developed. That makes it possible to create an expert control system for motion. Features of this algorithm is the use of penalty functions to describe the restrictions imposed by the traffic schedule: the train reaches the destination point for a given driving time, the speed limit on the sections of the track, and the absence of train idle time during the movement. A single approach to penalty functions is also applied to introduce constraints on the adhesion. This approach allows to reduce significantly the costs of the estimated time and to simplify the procedures for calculating energy costs. A mathematical model is created to determine the efficiency of the traction drive. The model includes the determination of the main losses in an asynchronous traction motor, taking into account the saturation of the magnetic system, which is determined by the results of solving a recurrent nonlinear equation. Also, the model takes into account losses from higher harmonic stresses in copper and steel, mechanical and additional losses. The developed model takes into account static and dynamic losses in IGBT transistors and diodes of a semiconductor converter. A method for optimizing the parameters and operating modes of cooling systems for asynchronous traction motors of the electric stock is developed. It consists of the following main stages: determination of the optimum mode of the traction drive operation on the basis of the proposed expression of its efficiency; determination of optimum modes of movement of the electric stock by the criterion of minimum costs; solution of the traction problem of motion on a section of the track with a specified traffic schedule and the track profile, as well as the determination of the dependence of the change in losses in the elements of asynchronous traction engines in time; choice of parameters and operation modes of cooling systems for asynchronous traction motors, which determine the efficiency of the cooling and ventilation system of the electric stock; solution of the problem of relative minimization of the cooling system for asynchronous traction motors with a modernized criterion of economic efficiency based on the Weil method on the generalized golden section and the problem of analyzing the ventilation and cooling system of traction motors, which is based on the mathematical model of thermal motor conditions by the generalized equivalent thermal scheme.
Петренко, Олександр Миколайович. "Наукові основи вибору оптимальних параметрів та режимів роботи систем охолодження асинхронних тягових двигунів електротранспорту." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/35328.
Full textThesis for the degree of Doctor of Engineering in specialty 05.22.09 "Electric transport " - National Technical University "Kharkiv Polytechnic Institute" MES of Ukraine, Kharkov, 2018. The thesis is devoted to the creation of scientific foundations for the selection of optimal parameters and operating modes for cooling systems for asynchronous traction motors of electric transport. An algorithm for solving the Hamilton-Jacobi-Bellman equation for the problem of the motion of an electric stock on a section of a track with a given profile and a traffic schedule is developed. That makes it possible to create an expert control system for motion. Features of this algorithm is the use of penalty functions to describe the restrictions imposed by the traffic schedule: the train reaches the destination point for a given driving time, the speed limit on the sections of the track, and the absence of train idle time during the movement. A single approach to penalty functions is also applied to introduce constraints on the adhesion. This approach allows to reduce significantly the costs of the estimated time and to simplify the procedures for calculating energy costs. A mathematical model is created to determine the efficiency of the traction drive. The model includes the determination of the main losses in an asynchronous traction motor, taking into account the saturation of the magnetic system, which is determined by the results of solving a recurrent nonlinear equation. Also, the model takes into account losses from higher harmonic stresses in copper and steel, mechanical and additional losses. The developed model takes into account static and dynamic losses in IGBT transistors and diodes of a semiconductor converter. A method for optimizing the parameters and operating modes of cooling systems for asynchronous traction motors of the electric stock is developed. It consists of the following main stages: determination of the optimum mode of the traction drive operation on the basis of the proposed expression of its efficiency; determination of optimum modes of movement of the electric stock by the criterion of minimum costs; solution of the traction problem of motion on a section of the track with a specified traffic schedule and the track profile, as well as the determination of the dependence of the change in losses in the elements of asynchronous traction engines in time; choice of parameters and operation modes of cooling systems for asynchronous traction motors, which determine the efficiency of the cooling and ventilation system of the electric stock; solution of the problem of relative minimization of the cooling system for asynchronous traction motors with a modernized criterion of economic efficiency based on the Weil method on the generalized golden section and the problem of analyzing the ventilation and cooling system of traction motors, which is based on the mathematical model of thermal motor conditions by the generalized equivalent thermal scheme.
Прилепа, Дмитро Вікторович, Дмитрий Викторович Прилепа, and Dmytro Viktorovych Prylepa. "Оптимізація вхідного математичного опису інтелектуальної системи комп'ютерної психодіагностики." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39126.
Full textБуряковський, Сергій Геннадійович. "Наукові основи вибору електроприводів стрілочних переводів для швидкісних та високошвидкісних залізниць." Thesis, Український державний университет залізничного транспорту, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/29744.
Full textDoctoral thesis, technical sciences, specialty 05.22.09 – "Electric transport." National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2017. The dissertation is dedicated to develop of theoretical bases for the selection and evaluation of the types of electric drives of turnouts operating in optimal modes, taking into account the nonlinearities of the load and the electrophysical properties of the engines, on the basis of solving the problem of minimizing the main quality indicators such as: the transfer time , the value of the impulse of switch rail impact against a rail, the value of the elastic force in the working draft and the magnitude of the total losses in the system. The universal vector criterion for the working efficiency of the electric drive of turnouts is proposed. Its components are the transfer time, the value of the impulse of switch rail impact against a rail, the value of the elastic force in the working draft and the magnitude of the total losses in the system. The assessment of the appropriateness of application a specific type of turnouts for rapid and high-speed traffic segments is made. The kinematic schemes in the form of two- and three-mass electromechanical systems with standard engines are considered. Various control systems for the operated electric drives, which provide higher quality indicators for rapidity of the switching process of the switch rails, positioning accuracy and the impact force on the rail, are proposed. The railway sleeper layout of the turnout with new types of electric motors is suggested to applying. The mathematical models for existing and prospective types of turnouts based on motors of rotational and linear types, which based on the solution of the Lagrange equation for electromechanical system taking into account the nonlinearity of the magnetic system, have been developed. The simulation models of electric drives of turnouts in the software environment of MATLAB SIMULINK on the basis of a DC motor, an asynchronous motor, a valve-inductor motor, a linear motor of electromagnetic type and a linear inductor motor are developed. The adequacy verification on physical models was made. The problem of analysis for determining the rational structure of the electric drive of turnout based on DC motor, asynchronous motor, valve-inductor motor, linear motor of electromagnetic type and linear inductor motor is formulated.
Буряковський, Сергій Геннадійович. "Наукові основи вибору електроприводів стрілочних переводів для швидкісних та високошвидкісних залізниць." Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/29739.
Full textDoctoral thesis, technical sciences, specialty 05.22.09 – "Electric transport." National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2017. The dissertation is dedicated to develop of theoretical bases for the selection and evaluation of the types of electric drives of turnouts operating in optimal modes, taking into account the nonlinearities of the load and the electrophysical properties of the engines, on the basis of solving the problem of minimizing the main quality indicators such as: the transfer time , the value of the impulse of switch rail impact against a rail, the value of the elastic force in the working draft and the magnitude of the total losses in the system. The universal vector criterion for the working efficiency of the electric drive of turnouts is proposed. Its components are the transfer time, the value of the impulse of switch rail impact against a rail, the value of the elastic force in the working draft and the magnitude of the total losses in the system. The assessment of the appropriateness of application a specific type of turnouts for rapid and high-speed traffic segments is made. The kinematic schemes in the form of two- and three-mass electromechanical systems with standard engines are considered. Various control systems for the operated electric drives, which provide higher quality indicators for rapidity of the switching process of the switch rails, positioning accuracy and the impact force on the rail, are proposed. The railway sleeper layout of the turnout with new types of electric motors is suggested to applying. The mathematical models for existing and prospective types of turnouts based on motors of rotational and linear types, which based on the solution of the Lagrange equation for electromechanical system taking into account the nonlinearity of the magnetic system, have been developed. The simulation models of electric drives of turnouts in the software environment of MATLAB SIMULINK on the basis of a DC motor, an asynchronous motor, a valve-inductor motor, a linear motor of electromagnetic type and a linear inductor motor are developed. The adequacy verification on physical models was made. The problem of analysis for determining the rational structure of the electric drive of turnout based on DC motor, asynchronous motor, valve-inductor motor, linear motor of electromagnetic type and linear inductor motor is formulated.