http://ea.donntu.ru/handle/123456789/22563 2013 р. 2026-04-22T05:41:13Z http://ea.donntu.ru/handle/123456789/22616 Title: STRUCTURE OF PROGRAMS FOR SPECTRA ANALYSIS Authors: Javůrek, M.; Taufer, I.; Явурек, M.; Тауфер, И. Abstract: Спектральний аналіз водних розчинів мультикомпонентних сумішей призначений для ідентифікації окремих компонентів у суміші. Спектри вимірюються при різних концентраціях основних компонентів і різних значеннях pH у обраному діапазоні частот. Отриману абсорбційну поверхню необхідно піддати нелінійному регресійному аналізу з використанням особливих алгоритмів. Типовим представником є програма SQUAD(84), яка була для цієї мети модифікована і розширена саме доповненням комплекту для аналізу резидуальних відхилень, верифікації алгоритму і тестування властивостей експериментальних систем за допомогою симулюючих даних. Description: The spectral analysis of aqueous solutions of multi-component mixtures is used for identification of individual components in the mixture. Apart from characteristic constants of components the distribution diagrams, i.e. concentration proportions of the individual components, are determined. The spectra are measured with various concentrations of the basic components and various pH values within the chosen range of wavelengths. The obtained absorbance response area has to be analyzed by non-linear regression using specialized algorithms. These algorithms have to meet certain requirements concerning the possibility of calculations and the level of outputs. A typical example is the SQUAD(84) program, which was gradually modified and extended, i. e. completely analysis of residua, verification of algorithm and testing of properties of experimental systems by data simulation, were added. 2013-01-01T00:00:00Z http://ea.donntu.ru/handle/123456789/22615 Title: КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ ЛИНЕЙНОГО ИНДУКЦИОННО- ДИНАМИЧЕСКОГО ПРЕОБРАЗОВАТЕЛЯ В РЕЖИМЕ МИКРОПЕРЕМЕЩЕНИЙ Authors: Семенец, Д.А.; Шевченко, Н.Я.; Semenets, D.; Shevchenko, N.; Семенець, Д.А.; Шевченко, М.Я. Abstract: В работе представлены расчетные соотношения и математическая модель линейного индукционно-динамического преобразователя для режима микроперемещений, на основании которых разработана компьютерная модель ЛИДП. На основании полученной модели определены регулировочные характеристики и проведен анализ типов управляющих воздействий для преобразователя. Description: In this work the necessity of research of electromechanical drive for implementing linear motion in the micrometer range – a linear induction-dynamic transformer – is substantiated. The transformer is considered as a system of interrelated components: an elastic mechanical part (movable anchor - working body), driven by the electromagnetic force generated by a flat coil of shorted anchor rigidly attached to the working body moving in the magnetic field of the inductor. Inductor coil is excited by periodic rectangular pulses, which are characterized by amplitude, frequency, duty cycle. Based on the known results of the optimization of such devices of impact action the ratios for the main LIDP parameters in the inductor diameter function are defined. Based on the original system of differential equations describing the dynamic processes in the converter we developed a mathematical model of a linear induction-dynamic converter for small displacements mode. Based on the obtained model control characteristics were determined and the analysis of types of control actions for the converter was performed. To ensure the greatest linearity of control characteristic it is recommended to use pulse amplitude modulation of the control signal for large displacements and pulse frequency modulation for small displacements. The developed model and the obtained relations allow designing the further LIDP considering real requirements of actuators and optimizing the machine settings according to different criteria. 2013-01-01T00:00:00Z http://ea.donntu.ru/handle/123456789/22614 Title: ПОСТРОЕНИЕ ВИРТУАЛЬНОЙ МОДЕЛИ ДЛЯ ЭКСПЕРИМЕНТАЛЬНЫХ ИССЛЕДОВАНИЙ ПОВЕДЕНИЯ КРОВЛИ В ПРИЗАБОЙНОМ ПРОСТРАНСТВЕ Authors: Савицкая, Я.А.; Ларин, В.Ю.; Чичикало, Н.И.; Sawitskaya, I.A.; Chichikalo, N.I.; Larin, V.U.; Савицька, Я.А.; Ларін, В.Ю.; Чичикало, Н.І. Abstract: В статье предложена методика решения одной из задач многокритериальной оптимизации процесса движения угледобывающего комбайна с помощью алгоритмов детерминированно- го локального поиска. Исследования, выполненные в среде инженерной научной лаборатории LabView 2011 предлагают новый метод поиска оптимального или субоптимального (близко- го к нему) решения задачи определения скорости подачи комбайна на основании локальных данных, получаемых от информационно-измерительной системы контроля процесса поведения кровли в призабойном пространстве. Description: The paper proposes a method for solving one of the multi-criteria optimization problems of the process of the shearer’s movement using the algorithms of deterministic local search. Studies carried out in the environment of engineering science laboratory LabView 2011 offer a new method for finding the optimal or suboptimal strength to solve the problem of determining the speed of the shearer based on local data from information-measuring system of roof conduct process behavior in the face space. Metaheuristic algorithms are among the most efficient in solving the problems of decisionmaking. All the existing metaheuristic algorithms can be divided into two large groups: metaheuristics using the only alternative; metaheuristics, using several alternatives to optimize the task. The first group of algorithms includes the algorithms simulating annealing, inhibit search and the algorithms of accelerated probabilistic modeling. A distinctive feature of the second group of algorithms is the availability of the sets of alternatives at each step of the search. When using metaheuristics it is necessary to create a database to store and evaluate alternative solutions. The advantage of this group is the best asymptotic convergence, which is especially important in multiobjective decision optimization. Known metaheuristics are based on a combination of population-based algorithms, such as genetic algorithms and the deterministic and stochastic local search. The algorithm for solving the problem is to be built on the basis of deterministic incoming data from sensors monitoring the status of the roof, changing at each step as the shearer moves from one section to the other. 2013-01-01T00:00:00Z http://ea.donntu.ru/handle/123456789/22613 Title: МЕТОДИКА МОДЕЛИРОВАНИЯ ПОХОДКИ ЧЕЛОВЕКА Authors: Нестругина, Е.С.; Nestrugina, E.S.; Нестругіна, О.С. Abstract: В статье предложена методика оценки походки человека путем моделирования в инженерном комплексе LabVIEW. Предложенная методика обеспечивает с помощью виртуального проектирования когнитивное визуальное наблюдение неравномерности шагов и нагрузки на нижние конечности в процессе ходьбы. Description: A method of human gait assessment by simulation in the engineering complex LabVIEW is proposed in the article. The proposed technique provides a virtual design with cognitive visual observation of uneven steps and the lower limbs load during walking. In the rehabilitation period of the musculoskeletal functions after injuries, walking is used as one of the basic diagnostic tests for instrumental biomechanical locomotor pathology diagnosis. The study of biomechanical characteristics of musculoskeletal function in the dynamics can objectively determine the effectiveness of the rehabilitation treatment. Motor symptoms is an early indicator of diseases. The gait study became a staple in the world clinical practice. The gait change is judged by the existing differences in the duration and intensity of exercise on one leg and the other according to the visual and acoustic perception. Information on the nature of gait is essential in the diagnosis and during rehabilitation of human motor functions. The use of advanced information technology has become indispensable today. Software packages are used to accelerate research and development tasks in the fields of science and technology. Engineering complexes such as LabVIEW can solve not only mathematical problems, but to visualize on the screen complex processes, also, allowing to create devices and systems with 100 percent real devices convergence. Equipment of health care diagnostic apparatus, including the rehabilitation of victims of accidents is an important task. The structure and the virtual model of the IMS human gait control during rehabilitation after traumatism is developed, which allows getting a description of both healthy and lame man. Methods of virtual design in the engineering complex LabVIEW show the effectiveness of the proposed method. Further areas of IMS operational development are identified to the operating option so that 100 percent convergence of virtual and real models can be achieved. The proposed development can be recommended for medical institutions for purposes of determining the efficacy of therapeutic interventions. 2013-01-01T00:00:00Z