Este trabalho apresenta um estudo da literatura pertinente sobre qualidade da energia elétrica. O estudo apresentado está baseado na evolução do tema em nível nacional e internacional, buscando explicar o conceito dos principais fenômenos e selecionar as recentes resoluções e normas que regem os princípios de medição e os limites dos distúrbios eletromagnéticos que os caracterizam. As normas da IEC foram selecionadas para a aplicação na construção de um protótipo de um medidor de qualidade da energia elétrica, onde o princípio construtivo é o de instrumento virtual por sua flexibilidade de arquitetura. A implementação do protótipo dá-se em um microcomputador padrão de mercado pelo software LabVIEW, através de vários módulos independentes para cada distúrbio a ser medido. Os resultados numéricos das simulações executadas frente a cada distúrbio, gerando comparações entre valores aplicados e valores medidos são apresentados em forma de tabelas com seus respectivos erros percentuais para cada grandeza de cada módulo. / This dissertation presents a study of existing literature about power quality. The study presented is based on a theme evolution in national and international environment, trying to explain the main phenomenon conceptions and select the most recent standards that rule the measurement conceptions and the electromagnetic disturbances limits that characterize it. The IEC standard were selected to build a prototype of a power quality measure device where the construction conception is a virtual instrument because it has a flexible architecture. The prototype implementation was made from a common computer by the LabVIEW software through some independent modules for each disturbance to be measured. The numerical results of executed simulations of each disturbance generating comparisons between applied values and measured values are presented as tables within their percentage error for each phenomenon of each module.

Este trabalho apresenta um estudo da literatura pertinente sobre qualidade da energia elétrica. O estudo apresentado está baseado na evolução do tema em nível nacional e internacional, buscando explicar o conceito dos principais fenômenos e selecionar as recentes resoluções e normas que regem os princípios de medição e os limites dos distúrbios eletromagnéticos que os caracterizam. As normas da IEC foram selecionadas para a aplicação na construção de um protótipo de um medidor de qualidade da energia elétrica, onde o princípio construtivo é o de instrumento virtual por sua flexibilidade de arquitetura. A implementação do protótipo dá-se em um microcomputador padrão de mercado pelo software LabVIEW, através de vários módulos independentes para cada distúrbio a ser medido. Os resultados numéricos das simulações executadas frente a cada distúrbio, gerando comparações entre valores aplicados e valores medidos são apresentados em forma de tabelas com seus respectivos erros percentuais para cada grandeza de cada módulo. / This dissertation presents a study of existing literature about power quality. The study presented is based on a theme evolution in national and international environment, trying to explain the main phenomenon conceptions and select the most recent standards that rule the measurement conceptions and the electromagnetic disturbances limits that characterize it. The IEC standard were selected to build a prototype of a power quality measure device where the construction conception is a virtual instrument because it has a flexible architecture. The prototype implementation was made from a common computer by the LabVIEW software through some independent modules for each disturbance to be measured. The numerical results of executed simulations of each disturbance generating comparisons between applied values and measured values are presented as tables within their percentage error for each phenomenon of each module.

This diploma thesis is containing the description of the LabVIEW Instrument Control Toolbox project. Initial preparations like the development environment choosing process, as well as the instrument driver layer choice are present along with the project requirements. A signal approach to the instrument control is defined and described in detail. This thesis also contains the main project development in The National Instruments LabVIEW and at the end, a detailed description and user guidance for each developed and fully integrated toolbox module.

This work deals with digital signal processing in the field of adaptive filtering. Fundamental basics of adaptive filtering are described and primary aim is to create executable laboratory examples, using adaptive filtering, in LabView programming language. These laboratory examples are intended to be used by students fo studying and during laboratory lessons. Objective is to connect the examples with external devices, such as microphone. A microphone is used as an user's speech input acquiring interface. In the thesis is depicted Wiener's filter and problem of adaptive filtering is discussed. Contemporary adaptive algorithms are described and their applications as well. Most mentioned is the LMS algorithm and it's forms. Laboratory examples use following concepts: Adaptive Echo Cancellation, Active Noise Control and System Identification. Each of these examples is solely executable (need for LabView or Run-time engine), consisting also of theory with diagrams. Examples therefore are usable even without manual.

С помощью оборудования National Instruments реализованы две установки для нанесения органических покрытий. Установка термовакуумного нанесения с виртуальным прибором «ThermoVac» позволяет производить линейный нагрев испаряемого вещества с фиксированной скоростью до заданной температуры термостатирования в диапазоне от комнатной до 500 °C. Установка для нанесения методом центрифугирования с ВП «SC_organic» позволяет поддерживать заданную скорость вращения подложки в диапазоне от 500 до 9000 об/мин. На базе микрозондовой станции Cascade Microtech MPS150 разработан автоматизированный канал для тестирования мемристорных структур, в режиме многократного чтения и записи. ВП «RW MIM» формирует на выходе SMU источника последовательность импульсов заданной амплитуды и длительности в режимах запись/чтение. Выполнено нанесение и аттестация пленок 5,11-диметил-5,11-дигидроиндоло [3.2-b]карбазола и 5,11-дигексил-5,11-дигидроиндоло[3.2-b]карбазола. По измеренным вольтамперным характеристикам получено, что полупроводник в синтезированных структурах TiN/DMICZ/Au, Ti/DMICZ/Au обладает дырочной проводимостью с подвижностью μ = 4.9∙10-7 см2/(В∙с). Показано, что регистрируемая ВАХ характеризуется петлями гистерезиса, которые свидетельствуют о наличии мемристивного эффекта в образцах TiN/DHICZ/Au. Произведено тестирование исследуемых слоистых структур в режимах многократного чтения/записи. / An automated installation based on National Instruments equipment, two installations for applying organic coatings are implemented. The installation of a thermo vacuum evaporation with a virtual device "ThermoVac" allows linear heating of the evaporated substance at a fixed rate of up to 500 ° C. The centrifugal centrifugation unit with an VI “SC_organic” supports the specified rotation speed of the substrate in the range of 500 to 9000 rpm. Based on the microprobe station Cascade Microtech MPS150, an automated channel was developed for testing memristor structures, in the mode of multiple reading and writing. VI "RW MIM" forms a sequence of pulses of the specified amplitude and duration in the write / read modes at the SMU output of the source. The deposition and validation of 5,11-dimethyl-5,11-dihydroindolo [3.2-b] carbazole and 5,11-dihexyl-5,11-dihydroindolo [3.2-b] carbazole films was performed. From the measured volt-ampere characteristics, it was found that the semiconductor in the synthesized TiN / DMICZ / Au, Ti / DMICZ / Au structures has a hole conductivity with a mobility μ = 4.9 ∙ 10-7 cm2/(V∙s). It is shown that the recorded I-V characteristic is characterized by hysteresis loops that indicate the presence of a memorial effect in TiN / DHICZ / Au samples. The testing of layered structures under test in multiple read / write modes was performed.

This master's thesis deals with alkaline battery characteristics and it has special consideration of nickel-cadmium cells. There are three main experimental parts in this paper. First one is concerned with positive electrode materials properties and is aimed to investigate impact of magnesium ions formed into nickel hydroxide electrode structure. Second part deals with battery charging/discharging and response measurement tool design. National Instruments hardware PXI modules for data acquisition was used and program in LabView environment was made. Last one is concerned with nickel-cadmium cell properties changes during increased temperature stressing. Investigation of cell self-charge changes during lithium hydroxide addition into electrolyte was made.

This thesis was selected due to establishing of universal platform for USBTMC remote instrumentation and constructing a laboratory DC power supply for hobby use. This thesis is focused on design and realization of regulated linear DC power supply. At first thesis mentions kinds of DC power supplies and kinds of interfaces used for test and measurement instruments. Thesis continues by describing of blocks of a developed linear DC power supply with an USB interface following the USBTMC specification for remote control. Thesis ends by realization of the regulated linear DC power supply with USBTMC interface. It was achieved acceptable results. Communication between PC and Control module works well as same as communication between Control module and Power supply module. Maximum output ranges of voltage and current are 40V and 3A. Big interference on auxiliary supply rail decreases accuracy.