Дисертації з теми "Методика синтезу"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-22 дисертацій для дослідження на тему "Методика синтезу".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Шумакова, Наталія Іванівна, Наталия Ивановна Шумакова, Nataliia Ivanivna Shumakova та Е. М. Киях. "Методика синтезу плівок карбіду вольфраму". Thesis, Видавництво СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/15236.
Повний текст джерелаСєлюков, О. В. "Методика синтезу механічних систем при конструюванні автоматичної стрілецької зброї". Дис. канд. техн. наук, Науково-виробнича корпорація "КІА", 2006.
Знайти повний текст джерелаПавлов, Андрій Володимирович, Андрей Владимирович Павлов, Andrii Volodymyrovych Pavlov та И. Е. Бурик. "Методика повышения общей устойчивости цифровых систем управления в процессе их синтеза". Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/10407.
Повний текст джерелаКучук, Ніна Георгіївна. "Моделі та методи синтезу інформаційних структур для комп’ютерних систем на інтегрованих програмних платформах". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/49174.
Повний текст джерелаDissertation for the degree of Doctor of Technical Sciences in the specialty of 05.13.05 – ComputerSystems and Components (123 – Computerengineering). – National Technical University "Kharkiv Polytechnic Institute", Ministry of Education and Science of Ukraine, Kharkiv, 2020. The thesis is devoted to solving actual scientific and technical problem of increasing the efficiency of the information transfer process in computer systems on integrated software platforms. It is based on the development of a mathematical apparatus (mathematical models and methods) for the synthesis of information structures. The analysis of the problem state was carried out. It was revealed that, simultaneously with the increase in the volume of transmitted information in the computer system and the increased requirements for the speed of information transmission, integrated software platforms are increasingly used. As a result, the structure and nature of information flows change qualitatively and quantitatively. This significantly affects the information structures of computer systems and leads to a decrease in efficiency indicators. An analysis of the existing requirements for modern software platforms of computer systems has been carried out. Advantages and disadvantages of centralized, distributed and combined software platforms are highlighted. Based on the analysis, general requirements for the necessary composition of platform software products are formulated. The requirements for the hardware of the core network of the computer system supporting them are also formulated. The analysis showed the feasibility of using integrated software platforms for departmental computer systems. The necessity of increasing the efficiency of transaction processing in the basic networks of computer systems has been proven. Those that use integrated software platforms can be done by using the specific properties of such platforms. This is due to the synthesis of the information structure of the computer system. A complex of interrelated models of the information structure of the computer system and the technical structure of the basic network has been developed. It takes into account the peculiarities of the integrated software platform. The complex is based on a stratified representation of the main constituents of the models. This allows you to take into account the informational relationships between the components of the computer system. It also allows increasing the degree of model adequacy. A set of methods foroperational redistribution of information flows in the basic network of a computer system on an integrated software platform has been developed. This complex takes into account the dynamics of the development of a computer system and the characteristic features of the underlying network. It is based on the operational reconfiguration of the virtual communication channel system. This helps to reduce the average packet delay. A set of methods for synchronizing the information structure of a computer system with the computing resources of the nodes of the basic network has been developed. The complex, which has been developed, takes into account information links between the tasks of a computer system and the possibility of using composite applications. This complex is based on an adaptive approach to finding a rational distribution of tasks between network nodes. The complex allows you to quickly synchronize. Synchronization is focused on reducing the cost of computing resources and increasing the efficiency of information transfer. The method of distribution of information flows along routes in the basic network of a computer system on an integrated software platform has been improved. The method differs from the known ones by using iterative load balancing of hosts. This is what makes it possible to reduce the cost of computing resources. The method of forming an information structure of increased reliability in a computer system on an integrated software platform has been improved. This method differs from the known ones by the simultaneous distribution of information flows along all the main and alternative routes of the core network. This allows, in the event of a failure of any network node, to continue processing transactions of the computer system. The computer system will operate without a significant decrease in service quality indicators and without changing the information structure. The method of optimizing the information structure of a computer system on an integrated software platform has been further developed. The method is based on the use of the mathematical apparatus of genetic algorithms. This device is used at the stage of load distribution of information nodes. This makes it possible to reduce the time spent on synthesizing the information structure and to form a balanced load on the nodes of the core network. The method of selecting an optimal plan for executing transactions of a computer system on an integrated software platform was further developed. A dynamic penalty function was introduced for exceeding time indicators. It is focused on the specifics of the integrated software platform and time scaling. This allows you to reduce the time spent on operational changes to the transaction execution plan. The complex of methods for processing requests to the data storage of a computer system on an integrated software platform has been further developed. A single disk pool was created. The peculiarities of access to the cloud components of the data warehouse were taken into account. This allows distributed heterogeneous components to be included in repositories. It also reduces the execution time of applications that access data warehouse components. The engineering methods and algorithms which has been developed on the basis of the offered models and methods allow: - simulate the information structure of the computer system on an integrated software platform and its basic computer network; - optimize the information structure of the computer system on an integrated software platform and the distribution of information flows along routes in the core network; - increase the operational efficiencyof computer system tasks on an integrated software platform by up to 10%; - reduce the costs of the computing resource of the basic network of a computer system on an integrated software platform up to 5%; - reduce the exploitational cost of a computer system on an integrated software platform by up to 10%; - expand the useful capacity of the data storage by including heterogeneous components and cloud components. Comparative assessment of developed and existing models and methods of synthesis information structures of computer systems on an integrated software platforms was carriedout. Based on the results that were obtained, the effectiveness of the proposed methods was proved. In particular, an assessment of the effectiveness of the subsystem for providing distance learning of the computer system in a technical university was carried out. The results of the integrated application of the proposed methods in the formation to the project of a computer system managing for the production structures of the airport are also presented. Where by increasing the transaction efficiency of information, the customer's requirements were achieved. They were executed relative to the limit of the probability of time bounds.This was done for operational transactions of the computer system with an increase in the load of the basic network.
Кучук, Ніна Георгіївна. "Моделі та методи синтезу інформаційних структур для комп’ютерних систем на інтегрованих програмних платформах". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/49170.
Повний текст джерелаDissertation for the degree of Doctor of Technical Sciences in the specialty of 05.13.05 – Computer Systems and Components. – National Technical University "Kharkiv Polytechnic Institute", Ministry of Education and Science of Ukraine, Kharkiv, 2020. The thesis is devoted to solving actual scientific and technical problem of increasing the efficiency of the information transfer process in computer systems on integrated software platforms. It is based on the development of a mathematical apparatus (mathematical models and methods) for the synthesis of information structures. The analysis of the problem state was carried out. It was revealed that, simultaneously with the increase in the volume of transmitted information in the computer system and the increased requirements for the speed of information transmission, integrated software platforms are increasingly used. As a result, the structure and nature of information flows change qualitatively and quantitatively. This significantly affects the information structur es of computer systems and leads to a decrease in efficiency indicators. A complex of interrelated models of the information structure of the computer system and the technical structure of the basic network has been developed. It takes into account the peculiarities of the integrated software platform. The complex is based on a stratified representation of the main constituents of the models. This allows you to take into account the informational relationships between the components of the computer system. It also allows increasing the degree of model adequacy. A set of methods for operational redistribution of information flows in the basic network of a computer system on an integrated software platform has been developed. This complex takes into account the dynamics of the development of a computer system and the characteristic features of the underlying network. It is based on the operational reconfiguration of the virtual communication channel system. This helps to reduce the average packet delay. A set of methods for synchronizing the information structure of a computer system with the computing resources of the nodes of the basic network has been developed. The complex, which has been developed, takes into account information links between the tasks of a computer system and the possibility of using composite applications. This complex is based on an adaptive approach to finding a rational distribution of tasks between network nodes. The complex allows you to quickly synchronize. Synchronization is focused on reducing the cost of computing resources and increasing the efficiency of information transfer. The method of distribution of information flows along routes in the basic network of a computer system on an integrated software platform has been improved. The method differs from the known ones by using iterative load balancing of hosts. This is what makes it possible to reduce the cost of computing resources. The method of forming an information structure of increased reliability in a computer system on an integrated software platform has been improved. This method differs from the known ones by the simultaneous distribution of information flows along all the main and alternative routes of the core network. This allows, in the event of a failure of any network node, to continue processing transactions of the computer system. The computer system will operate without a significant decrease in service quality indicators and without changing the information structure. The method of optimizing the information structure of a computer system on an integrated software platform has been further developed. The method is based on the use of the mathematical apparatus of genetic algorithms. This device is used at the stage of load distribution of information nodes. This makes it possible to reduce the time spent on synthesizing the information structure and to form a balanced load on the nodes of the core network.The method of selecting an optimal plan for executing transactions of a computer system on an integrated software platform was further developed. A dynamic penalty function was introduced for exceeding time indicators. It is focused on the specifics of the integrated software platform and time scaling. This allows you to reduce the time spent on operational chang es to the transaction execution plan. The complex of methods for processing requests to the data storage of a computer system on an integrated software platform has been further developed. A single disk pool was created. The peculiarities of access to the cloud components of the data warehouse were taken into account. This allows distributed heterogeneous components to be included in repositories. It also reduces the execution time of applications that access data warehouse components.
Коваленко, Андрій Анатолійович. "Моделі та методи синтезу і реконфігурації архітектур комп'ютерних систем і мереж об'єктів критичного застосування". Thesis, Харківський національний університет радіоелектроніки, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37690.
Повний текст джерелаDissertation for the degree of Doctor of Technical Sciences in the specialty of 05.13.05 – Computer Systems and Components. – Kharkiv National University of Radio Electronics, National Technical University "Kharkiv Polytechnic Institute", Ministry of Education and Science of Ukraine, Kharkiv, 2018. The thesis is devoted to solving of actual scientific and applied problem of ensuring the operativeness requirements for information exchange process in computer systems (CS) of critical application objects (CAO) on the basis of mathematical apparatus (mathematical models and methods) development intended for synthesis of new and reconfiguration of existing architectures of computer systems and networks. It was performed an analysis of the problem, appropriate trends of CAO CS, as well as the requirements for architectures of CAO CS and networks. The results revealed that currently existing models intended for synthesis and reconfiguration of CAO CS does not always lead to meet the operativity requirements for the process of information exchange in CAO CS and networks (CSN). This circumstance determines the need to improve the corresponding classical mathematical tools to increase the operativity of information transmission. It was developed a complex of methods for multiparameter synthesis of CAO CSN that optimizes the costs of constructing components of the critical application object CS, which ensure the meeting of operativity requirements. It was developed a further improvement for the model of tasks distribution process within the components of distributed CAO CS that allows significant accelerating the solution of the optimization problem in a case of large dimensions. It was developed a complex of evolution models for CAO computer networks (CN) that allows executing the prediction of network architecture changes during a fixed time interval. It was developed a complex of reconfiguration methods for CAO CN that allows adjusting the set of operation parameters of wireless components of the network in order to reduce the time of information transmission. It was improved a mathematical model describing the operation of CAO CN cloud component that allows accelerating the process of information transmission. It was improved a method of optimal time scales constructing for approximating the length of CAO CN queues that allows determining the length of queues during network reconfiguration. It was improved a method for information transmission in a wireless segment of CAO CN that allows reducing the time of information transmission.
Коваленко, Андрій Анатолійович. "Моделі та методи синтезу і реконфігурації архітектур комп'ютерних систем і мереж об'єктів критичного застосування". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37686.
Повний текст джерелаDissertation for the degree of Doctor of Technical Sciences in the specialty of 05.13.05 – Computer Systems and Components. – Kharkiv National University of Radio Electronics, National Technical University "Kharkiv Polytechnic Institute", Ministry of Education and Science of Ukraine, Kharkiv, 2018. The thesis is devoted to solving of actual scientific and applied problem of ensuring the operativeness requirements for information exchange process in computer systems (CS) of critical application objects (CAO) on the basis of mathematical apparatus (mathematical models and methods) development intended for synthesis of new and reconfiguration of existing architectures of computer systems and networks. It was performed an analysis of the problem, appropriate trends of CAO CS, as well as the requirements for architectures of CAO CS and networks. The results revealed that currently existing models intended for synthesis and reconfiguration of CAO CS does not always lead to meet the operativity requirements for the process of information exchange in CAO CS and networks (CSN). This circumstance determines the need to improve the corresponding classical mathematical tools to increase the operativity of information transmission. It was developed a complex of methods for multiparameter synthesis of CAO CSN that optimizes the costs of constructing components of the critical application object CS, which ensure the meeting of operativity requirements. It was developed a further improvement for the model of tasks distribution process within the components of distributed CAO CS that allows significant accelerating the solution of the optimization problem in a case of large dimensions. It was developed a complex of evolution models for CAO computer networks (CN) that allows executing the prediction of network architecture changes during a fixed time interval. It was developed a complex of reconfiguration methods for CAO CN that allows adjusting the set of operation parameters of wireless components of the network in order to reduce the time of information transmission. It was improved a mathematical model describing the operation of CAO CN cloud component that allows accelerating the process of information transmission. It was improved a method of optimal time scales constructing for approximating the length of CAO CN queues that allows determining the length of queues during network reconfiguration. It was improved a method for information transmission in a wireless segment of CAO CN that allows reducing the time of information transmission.
Калшабеков, Арайбек Салыбекович. "Взаимосвязь рекомбинационных характеристик системы Si-SiO2-Si3N4 с методиками синтеза и обработки диэлектрических слоев." Дис. канд. фіз.-мат. наук, Киевский политехнич. ин-т, 1988.
Знайти повний текст джерелаЛетавин, Д. А. "Методика структурного синтеза шлейфных мостов УВЧ диапазона с уменьшенными габаритными размерами : диссертация на соискание ученой степени кандидата технических наук : 05.12.07". Thesis, б. и, 2021. http://hdl.handle.net/10995/100819.
Повний текст джерелаЛетавин, Д. А. "Методика структурного синтеза шлейфных мостов УВЧ диапазона с уменьшенными габаритными размерами : автореферат диссертации на соискание ученой степени кандидата технических наук : 05.12.07". Thesis, б. и, 2021. http://hdl.handle.net/10995/100818.
Повний текст джерелаБобух, О. Ю., та Валерій Петрович Северин. "Синтез систем автоматичного керування з нечіткими регуляторами на основі методів оптимізації". Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/32575.
Повний текст джерелаПодольникова, А. Ю., Р. К. Гасанов, Д. А. Новоточинов та Л. М. Миронович. "Усовершенствование метода синтеза 7-амино-3-трет- бутилпиразоло[5,1-c][1,2,4]триазин-4(6Н)-она". Thesis, Сумский государственный университет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/39776.
Повний текст джерелаБлиндюк, Василь Степанович, Василий Степанович Блиндюк та Vasiliy S. Blindyuk. "Методи та моделі прогнозування ефективних параметрів керування тяговим електроприводом моторвагонного рухомого складу". Thesis, Видавництво ТОВ «Енергозберігаючі технології», м. Харків, 2014. http://eadnurt.diit.edu.ua:82/jspui/handle/123456789/2155.
Повний текст джерелаUA: АНОТАЦІЯ Дисертація присвячена вирішенню науково-прикладної проблеми підвищення енергетичної ефективності роботи та зменшення експлуатаційних витрат тягових електроприводів моторвагонного рухомого складу. У роботі встановлено й теоретично обґрунтовано можливість оптимізації процесу руху електропоїздів за критерієм мінімальної витрати електроенергії при дотриманні діючих обмежень на керування, швидкість і прискорення. Розроблено математичні та нейромережеві моделі іскрового струму, боксовання та теплових режимів роботи тягових двигунів, що функціонують у реальному часі. Проведено моделювання пускових характеристик тягових двигунів та синтез оптимального приймача іскрової компоненти струму якоря. Загальна сума очікуваного економічного ефекту від розроблення й застосування запропонованих у роботі методів і моделей прогнозування ефективних параметрів керування тяговим електроприводом моторвагонного рухомого складу з урахуванням зміни вартості грошей у часі протягом шести років складе 29571,6 тис. грн.
RU: АННОТАЦИЯ Диссертационная работа посвящена решению научно-прикладной проблемы повышения энергетической эффективности работы и уменьшения эксплуатационных расходов тяговых электроприводов моторвагонного подвижного состава. Основываясь на принципах геометрической теории управления, в работе была установлена и теоретически обоснована возможность оптимизации процесса движения электропоездов по критерию минимального расхода электроэнергии при соблюдении действующих ограничений на управление, скорость и ускорение. В основу сформированного комплекса моделей и синтеза оптимальных управлений тяговым электроприводом постоянного тока положены системы уравнений в форме Бруновского и принцип максимума Понтрягина. На основе нейронных сетей адаптивной резонансной теории созданы научные основы управления тяговым электроприводом подвижного состава с учетом ограничений относительно коммутации, температуры двигателей и боксовання. Разработаны модели и методы управления моторвагонным подвижным составом, которые адекватно воссоздают процессы, протекающие в системах управления тяговым электроприводом и позволяют провести моделирование его контуров управления. С целью оптимизации пусковых режимов работы тяговых двигателей на модели проведены исследования разгона электропоезда при различных варьируемых (ток, профиль пути, степень загрузки вагона) параметрах движения. В процессе исследований минимизировался функционал, который представляет собой линейную взвешенную комбинацию квадрата управления и времени разгона подвижного состава. Проведено моделирования пусковых характеристик тяговых двигателей с применением прямого и обратного комплексного преобразования Фурье. Для оценки воздействия коммутационных процессов на временную структуру тягового тока разработана математическая модель искрового тока тягового двигателя и проведен синтез оптимального приемника искровой компоненты тока якоря. Разработана нейросетевая динамическая модель устройства оценки степени искрения тягового двигателя, которая позволяет путем аналитического описания искровой компоненты тока якоря обеспечить возможность последующей ее оптимальной фильтрации в условиях действия внешних и внутренних помех. При этом сформулированы функциональные требования относительно модели, сформированы принципы разработки учебной последовательности для получения запланированных результатов и выполнен анализ исходных сигналов в амплитудной, частотной и фазовой областях. На основе динамической нейронной сети типа NARX с модифицированным алгоритмом обучения методом обратного распространения погрешности разработаны тепловые нейросетевые модели тяговых двигателей, функционирующие в реальном масштабе времени. Разработанные модели позволяют контролировать как текущее тепловое состояние тяговых двигателей, так и прогнозировать их дальнейшую работу с учетом предыдущего состояния и индивидуальных особенностей. Во избежание выхода из строя тяговых двигателей и сохранения работоспособности тягового электропривода в случаях превышения допустимых значений относительно коммутации, температуры и боксовання, предложено ввести в систему его управления соответствующие ограничения. С этой целью в схему управления моторвагонным подвижным составом введено дополнительное оборудование, функционирование которого построено на использовании нейронных сетей адаптивной резонансной теории и математических моделях, основанных на таксономическом показателе и реализованных с помощью рекуррентной нейронной сети RTRN, что позволило разработать новые методы управления тяговым электроприводом, которые учитывают ограничения относительно коммутации, температуры и боксования, а также позволяют контролировать в реальном времени техническое состояние тяговых двигателей. Общая сумма ожидаемого экономического эффекта от разработки и применения предлагаемых в работе методов и моделей прогнозирования эффективных параметров управления тяговым электроприводом моторвагонного подвижного состава с учетом изменения стоимости денег во времени в течение шести лет составит 29571,6 тыс. грн.
EN: ANNOTATION The thesis deals with engineering solutions to formation of methods and models for power efficient control of electric traction drives of EMU rolling stock. Principles of the geometric control theory have made it possible to establish and theoretically substantiate the possibility to optimize the process of electric train movement with minimal electric power consumption subject to effective limitations on control, speed and acceleration. Equation systems in Brunovsky’s form and Pontryagin’s Maximum Principle are the basis of a set of models designed and synthesis of an optimal control of DC electric traction drives. It has been designed a neural network dynamic model of traction engine sparking, and made synthesis of an optimal collector for armature current in sparking. Use of neural networks of the adaptive resonance theory (ART) and mathematical models, based on the taxonomic character, and implemented with the recurrent neural network RTRN has made it possible to develop new control methods of an electric traction drive, which take into account limitations on commutation, temperature and skidding, as well as real time control over power engines’ technical condition. It has been developed the mathematical model and neural network modelling of starting characteristics of traction engines with the direct and inverse complex Fourier transform. It has been developed neural network models of thermal conditions of traction engines with NARX dynamic neural network and models of the modified error back propagation training algorithm. The total saving rate of development and implementation of the control system of electric traction drives of EMU rolling stock subject to the time value of money within a six-year period will account for UAH 29,571,600.
Українська державна академія залізничного транспорту, м. Харків
Бриксін, Володимир Олександрович. "Моделі та методи автоматизованого керування рухом поїзда на основі адаптивної корекції швидкості". Thesis, Український державний університет залізничного транспорту, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/20138.
Повний текст джерелаDissertation for the degree of candidate of technical Sciences on profession 05.13.03 – management systems and processes – National Technical University "Kharkiv Polytechnical Institute", Kharkiv, 2016. The thesis solves the scientific-and-practical tasks of providing with the required performance for train movement control process based on the adaptive adjustment of its speed with allowance for its non-stationary data and obstacles. Made was the analysis of train movement speed control systems. Defined was the minimum number of therms for a guaranteed accuracy and a required schedule of train movements, made was the analysis of approaches for automated train operation; ground was given to the necessity of using Petri nets with new functional branches for automated train speed control systems; developed was the adaptive regulator of train speed control under the interference effect. The adaptive regulator was put to a pilot study. Synthesized was the architecture of the adaptive filter and regulator ensuring the input signal x(t) to be filtered depending on the current signal/noise ratio, which results in fourfold reducing the transition delay of the control system under a semiconductor converter interference. In comparison with the known ones, this device has an extra parametric output for an identified signal extraction, which is equal to a current signal/noise ratio and usable for an additional regulator adjustment when changing the adaptation factor. While adapting, the data resetting of filter and regulator adjustment in a wide band of its change takes place.
Бриксін, Володимир Олександрович. "Моделі та методи автоматизованого керування рухом поїзда на основі адаптивної корекції швидкості". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/20137.
Повний текст джерелаDissertation for the degree of candidate of technical Sciences on profession 05.13.03 – management systems and processes – National Technical University "Kharkiv Polytechnical Institute", Kharkiv, 2016. The thesis solves the scientific-and-practical tasks of providing with the required performance for train movement control process based on the adaptive adjustment of its speed with allowance for its non-stationary data and obstacles. Made was the analysis of train movement speed control systems. Defined was the minimum number of therms for a guaranteed accuracy and a required schedule of train movements, made was the analysis of approaches for automated train operation; ground was given to the necessity of using Petri nets with new functional branches for automated train speed control systems; developed was the adaptive regulator of train speed control under the interference effect. The adaptive regulator was put to a pilot study. Synthesized was the architecture of the adaptive filter and regulator ensuring the input signal x(t) to be filtered depending on the current signal/noise ratio, which results in fourfold reducing the transition delay of the control system under a semiconductor converter interference. In comparison with the known ones, this device has an extra parametric output for an identified signal extraction, which is equal to a current signal/noise ratio and usable for an additional regulator adjustment when changing the adaptation factor. While adapting, the data resetting of filter and regulator adjustment in a wide band of its change takes place.
Димко, Єгор Павлович. "Моделі та методи оптимального керування індукційним дуплекс-процесом за умов невизначеності". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38635.
Повний текст джерелаThesis for the degree of candidate of technical sciences in specialty 05.13.03 – systems and control processes. – National Technical University "Kharkov Polytechnic Institute", Kharkov, 2018. The thesis is devoted to the solution of an actual scientific and practical problem – the development of optimal control methods in conditions of uncertainty. The possibility of building an adequate mathematical model of an induction duplex melting process as a control object under the conditions of impossibility of implementing an active experiment plan under production conditions is shown. Based on this, it is proposed to use the results of the parametric description by definition of the local-optimal values of the input variables based on the implementation of the ridge analysis procedure to describe the final state in the problem of finding the optimal by the final state control. It is shown how using a combined procedure of artificial orthogonalization according to a passive experiment with an arbitrary form of the experiment plan and central orthogonal planning to obtain such a parametric description. The problem of synthesizing optimal control of induction melting in IST1 / 0.8-M5 furnaces in terms of alternative strategies was solved and it was proved that when choosing a melting strategy in the “bog” phase trajectory will constantly change due to the correction of the initial state, which is caused by the change in melting rate with the selected control method. It is shown how the optimal in terms of speed control can be obtained using the Pontryagin maximum principle in terms of taking into account the uncertainty in the description of the initial state of the control object. An optimal temperature regulator was synthesized in an induction mixer based on a multi-alternative description of the final state, a characteristic feature of which is the use of optimal solutions of ridge analysis and parametric classification of the temperature regime. It is shown how such an approach can be applied to a block of logical conditions in the logical synthesis of a combined control system of an induction duplex process.
Димко, Єгор Павлович. "Моделі та методи оптимального керування індукційним дуплекс-процесом за умов невизначеності". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38290.
Повний текст джерелаThesis for the degree of candidate of technical sciences in specialty 05.13.03 – systems and control processes. – National Technical University "Kharkov Polytechnic Institute", Kharkov, 2018. The thesis is devoted to the solution of an actual scientific and practical problem – the development of optimal control methods in conditions of uncertainty. The possibility of building an adequate mathematical model of an induction duplex melting process as a control object under the conditions of impossibility of implementing an active experiment plan under production conditions is shown. Based on this, it is proposed to use the results of the parametric description by definition of the local-optimal values of the input variables based on the implementation of the ridge analysis procedure to describe the final state in the problem of finding the optimal by the final state control. It is shown how using a combined procedure of artificial orthogonalization according to a passive experiment with an arbitrary form of the experiment plan and central orthogonal planning to obtain such a parametric description. The problem of synthesizing optimal control of induction melting in IST1 / 0.8-M5 furnaces in terms of alternative strategies was solved and it was proved that when choosing a melting strategy in the "bog" phase trajectory will constantly change due to the correction of the initial state, which is caused by the change in melting rate with the selected control method. It is shown how the optimal in terms of speed control can be obtained using the Pontryagin maximum principle in terms of taking into account the uncertainty in the description of the initial state of the control object. An optimal temperature regulator was synthesized in an induction mixer based on a multi-alternative description of the final state, a characteristic feature of which is the use of optimal solutions of ridge analysis and parametric classification of the temperature regime. It is shown how such an approach can be applied to a block of logical conditions in the logical synthesis of a combined control system of an induction duplex process.
Туровський, Олександр Леонідович, Александр Леонидович Туровский та Oleksandr Leonidovych Turovsky. "Моделі та методи підвищення точності роботи систем фазової синхронізації супутникових телекомунікацій в режимі стеження за несучою частотою". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/49647.
Повний текст джерелаВ диссертационной работе решается актуальная научно-техническая проблема разработки моделей и методов повышения точности работы систем фазовой синхронизации спутниковых телекоммуникаций в режиме слежения за несущей частотой. В работе разработаны модели и методы синтеза комбинированной системы фазовой синхронизации когерентных демодуляторов в режиме слежения за несущей частотой в установившемся и переходном режимах работы спутниковых телекоммуникаций. Указанные алгоритмы позволяют синтезировать комбинированные системы синхронизации с существенными преимуществами по быстродействию и точности оценки несущей частоты в отличие от существующих систем фазовой синхронизации закрытого типа. Для определения количественных значений минимальной дисперсии оценки несущей частоты входного сигнала когерентными демодуляторами спутниковых телекоммуникаций в работе обоснованно критерий нижней границы Крамер-Рао и представлена методика его расчета. Для оценки несущей частоты для когерентных демодуляторов в непрерывном режиме приема сигнала спутниковыми телекоммуникациями в работе представлена соответствующая методика. Данная методика учитывает влияние «соседних» каналов приема входных сигналов и, при значительно уменьшенном интервале наблюдения, повышает точность оценки несущей частоты по правилу максимального правдоподобия с использованием функции быстрого преобразования Фурье и метода умножения фазы входного сигнала при условии неопределенности всех параметров входного сигнала, принимаемого в непрерывном режиме В работе разработана методика двухэтапной оценки несущей частоты для когерентных демодуляторов в пакетном режиме приема сигнала спутниковыми телекоммуникациями. Данная методика обеспечивает простую процедуру расчета первого этапа приближенной оценки частоты с использованием скользящего быстрого преобразования Фурье и, благодаря итеративной процедуре дихтомического процесса, позволяет, на втором этапе, значительно повысить точность оценки несущей частоты при уменьшении интервалов наблюдения с учетом условия неопределенности всех параметров сигнала принимаемого в пакетном режиме.
In the dissertation work the actual scientific and technical problem of development of models and methods of increase of accuracy of work of systems of phase synchronization of satellite telecommunications in a mode of tracking on a carrier frequency is solved. Models and methods of synthesis of the combined system of phase synchronization of coherent demodulators in the mode of monitoring of the carrier frequency in constant and transient modes of operation of satellite telecommunications which allow to synthesize the combined systems of synchronization with essential advantages on speed and accuracy closed type synchronization. To determine the quantitative values of the minimum variance of the carrier frequency estimation of the input signal by coherent demodulators of satellite telecommunications, the criterion of the lower Kramer-Rao boundary is substantiated and the method of its calculation is presented. To estimate the carrier frequency for coherent demodulators in the continuous mode of signal reception by satellite telecommunications, the corresponding method is presented. This technique takes into account the influence of "adjacent" channels of input signals and, with a significantly reduced observation interval, increases the accuracy of carrier frequency estimation by the rule of maximum likelihood using the fast Fourier transform function and the method of phase multiplication of the input signal. taken continuously The method of two - stage carrier frequency estimation for coherent demodulators in the packet mode of signal reception by satellite telecommunications is developed in the work. This technique provides a simple procedure for calculating the first stage of approximate frequency estimation using sliding fast Fourier transform and, thanks to an iterative dichotomous procedure, allows, in the second stage, to significantly increase the accuracy of carrier frequency estimation by reducing observation intervals taking into account the uncertainty of all parameters. received in batch mode. It is shown that the application of the carrier frequency estimation method for a coherent demodulator when receiving a signal in continuous mode for modulation methods FM-2 and FM-4 provides an estimate of the carrier frequency with a variance that is not more than 3 times higher than the corresponding conditions. -Rao in the range of signal / noise from 1 to 6 dB. The proposed method of estimating the carrier frequency by a coherent demodulator when receiving a signal in batch mode provides an estimate with a certain variance at a small observation interval equal to 27 clock intervals and the variance of the frequency estimate almost coincides with the defined lower Kramer-Rao boundary. Hardware implementation of the algorithm for estimating the carrier frequency in the packet mode of signal reception is proposed to perform on modern computing devices, which together with their capabilities and capabilities of the proposed algorithm provide real-time calculations.
Лавриненко, Олександр Юрійович, Александр Юрьевич Лавриненко та Oleksandr Lavrynenko. "Методи підвищення ефективності семантичного кодування мовних сигналів". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52212.
Повний текст джерелаThe thesis is devoted to the solution of the actual scientific and practical problem in telecommunication systems, namely increasing the bandwidth of the semantic speech data transmission channel due to their efficient coding, that is the question of increasing the efficiency of semantic coding is formulated, namely – at what minimum speed it is possible to encode semantic features of speech signals with the set probability of their error-free recognition? It is on this question will be answered in this research, which is an urgent scientific and technical task given the growing trend of remote human interaction and robotic technology through speech, where the accurateness of this type of system directly depends on the effectiveness of semantic coding of speech signals. In the thesis the well-known method of increasing the efficiency of semantic coding of speech signals based on mel-frequency cepstral coefficients is investigated, which consists in finding the average values of the coefficients of the discrete cosine transformation of the prologarithmic energy of the spectrum of the discrete Fourier transform treated by a triangular filter in the mel-scale. The problem is that the presented method of semantic coding of speech signals based on mel-frequency cepstral coefficients does not meet the condition of adaptability, therefore the main scientific hypothesis of the study was formulated, which is that to increase the efficiency of semantic coding of speech signals is possible through the use of adaptive empirical wavelet transform followed by the use of Hilbert spectral analysis. Coding efficiency means a decrease in the rate of information transmission with a given probability of error-free recognition of semantic features of speech signals, which will significantly reduce the required passband, thereby increasing the bandwidth of the communication channel. In the process of proving the formulated scientific hypothesis of the study, the following results were obtained: 1) the first time the method of semantic coding of speech signals based on empirical wavelet transform is developed, which differs from existing methods by constructing a sets of adaptive bandpass wavelet-filters Meyer followed by the use of Hilbert spectral analysis for finding instantaneous amplitudes and frequencies of the functions of internal empirical modes, which will determine the semantic features of speech signals and increase the efficiency of their coding; 2) the first time it is proposed to use the method of adaptive empirical wavelet transform in problems of multiscale analysis and semantic coding of speech signals, which will increase the efficiency of spectral analysis due to the decomposition of high-frequency speech oscillations into its low-frequency components, namely internal empirical modes; 3) received further development the method of semantic coding of speech signals based on mel-frequency cepstral coefficients, but using the basic principles of adaptive spectral analysis with the application empirical wavelet transform, which increases the efficiency of this method. Conducted experimental research in the software environment MATLAB R2020b showed, that the developed method of semantic coding of speech signals based on empirical wavelet transform allows you to reduce the encoding speed from 320 to 192 bit/s and the required passband from 40 to 24 Hz with a probability of error-free recognition of about 0.96 (96%) and a signal-to-noise ratio of 48 dB, according to which its efficiency increases 1.6 times in contrast to the existing method. The results obtained in the thesis can be used to build systems for remote interaction of people and robotic equipment using speech technologies, such as speech recognition and synthesis, voice control of technical objects, low-speed encoding of speech information, voice translation from foreign languages, etc.
Фоменко, Богдана Вікторівна. "Автоматизація процесів керування прямоточними котлоагрегатами з врахуванням технологічних обмежень". Doctoral thesis, 2011. https://ela.kpi.ua/handle/123456789/1280.
Повний текст джерелаБігальський, Богдан Петрович. "Методи і засоби автоматизованого синтезу супровідної документації програмного забезпечення комп’ютерних систем". Master's thesis, 2018. http://elartu.tntu.edu.ua/handle/lib/26456.
Повний текст джерелаЛагрон, Аліса Вадимівна. "Синтез і властивості 4-гідразинохінолінів та їх іліденогідразинопохідних". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/4201.
Повний текст джерелаUA : В роботі 72 сторінки, 2 таблиці, 38 рисунків, було використано 65 літературних джерела, 20 з них на іноземній мові. Об’єктом дослідження є (хінолін-4-ілгідразон)-карбонові кислоти та їх функціональні похідні. Предметом дослідження є синтез, ідентифікація та фізико-хімічні властивості (хінолін-4-ілгідразон)-карбонових кислот та їх солей, естерів (температура плавлення, ТШХ). Мета роботи: синтезувати та вивчити фізико-хімічні властивості (хінолін-4-ілгідразон)-карбонових кислот та їх похідних, як потенційних біорегуляторів. Методи досліджень та апаратура – теоретичний, розрахунковий, експериментальний, ваги, піщана баня, хімічний посуд, прилад для визначення температури плавлення, хроматографічна камера, програмне забезпечення ACD-і-LABS, ChemOffice, PASS Online. В результаті експериментальної було розроблено оптимальні методики синтезу 4-гідразинохінолінів та (хінолін-4-ілгідразон)-карбонових кислот і їх функціональних похідних (солей, естерів), також проведено ідентифікацію отриманих сполук. Було вивчено фізико-хімічні властивості синтезованих сполук та їх перспективність, як потенційно біологічно активних речовин.
EN : This work consists of 72 pages, 2 tables, 38 figures, 65 literary sources were used, of which 20 were in a foreign language. The object of the study is (quinolin-4-ylhydrazone)-carboxylic acids and their functional derivatives. The subject of the study is the synthesis, identification and physicochemical properties of (quinolin-4-ylhydrazone) -carboxylic acids and their salts, esters (melting point, TLC). The aim of the work was to synthesize and study the physicochemical properties (quinolin-4-ylhydrazone)-carboxylic acids and their derivatives as potential bioregulators. Research methods and equipment – theoretical, estimated, experimental, scales, sand bath, chemical utensils, melting temperature determination device, chromatographic chamber, ACD-i-LABS software, ChemOffice, PASS Online. As a result of experimental research, optimal methods for the synthesis of 4-hydrazinoquinolines and (quinolin-4-ylhydrazone) -carboxylic acids and their functional derivatives (salts, esters) were developed, and the obtained compounds were identified. The physicochemical properties of the synthesized compounds and their prospects as potentially biologically active substances were studied.