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Information × Registration Number 0216U007057, 0111U001438 , R & D reports Title Investigation of the problems of active and passive motion control of perspective space constructions popup.stage_title Head Alpatov Anatoliy Petrovich, Доктор технічних наук Registration Date 23-03-2016 Organization The Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine popup.description2 Object of study - perspective space construction of various designations: perspective spacecrafts, including large space structures; space manipulation mechanisms; nonoperational spacecrafts removal from working orbits. Work purpose - investigation of dynamics, development and analysis of possible alternative motion control synthesis for perspective space structures, preventing the of space debris generation in near-Earth space. The methods (applied): information-analytical, numerical solution of differential equations, interpolation, mathematical modeling, computer simulation, theoretical mechanics. The mathematical model of angular motion of the space solar electric power station structure, which belongs to a class of large space structures, has been developed. Design model of present class of nonlinear objects control that allows to extend the obtained results in various structure configurations were proposed. Control law of power station angular position have been synthesized. Synthesis methods of the robust advanced state vector observer have been proposed for closed loop control system and to reduction of controllers dimensionality with usage of frequency-weighted Hankel optimal approximation. Control algorithms of construction elements aiming to the Sun and to the rectenna were synthesized. Usage of the observer for state vector allows to split the aiming process model on to independent subsystems. It is shown that energy management for position control of geostationary station platform to the Earth one order less than to the sun. Actual problems of space manipulations systems dynamics are formulated, control problems in operations performance like: payload moving; contact operations, when there is force interaction between end effector and base, capture of free-flight objects, are among them. Design models, computer-oriented and mathematical models of the considered systems dynamics, that can be used for system design parameters choice, along with work operations study, were developed. The spacecraft and payload mutual positioning systems class is highlighted. For this class of systems developed modeling task. In what highlighted the most significant elements for the analysis of the studied processes. It is possible to study the peculiarities of the considered systems dynamics. For systems with parallel mechanism developed a modeling task to study the problem of oscillatory processes in the mechanism subject to mobility base in inertial space. Efficiency criterion for spacecraft removal from working orbits suitable for comparison of various removal system types were developed. Mathematical model of space factors influence to removal systems were developed. Methodic of evaluating of removal systems effectiveness were proposed along with evaluation of different systems types usage and definition of their limits use. The analysis of the computer modeling of deformable solids dynamics trends and their software implementation were hold. A number of perspective methods for solving problems of this systems class dynamics including the methods of material points are identified. The material points method has evolved relatively to the evaluation of spatial and temporal errors for some of its variants, and methods of dynamic computational grid construction, in carrying out these studies. The structure and modules of computational program that implements the method has been developed; test calculations have been performed; recommendations for the usage of the method in the calculation of the dynamics of this class systems have been made. The proposed control algorithms, dynamics model, research methods and methods of the parameters determination can be important for the development of perspective projects of Ukraine space industry. The research results were used in "Yuzhnoye SDO" in the development of perspective spacecraft versions. Field of results application - large space structures mechanics, space manipulation systems dynamics, problems of space debris disposal from working orbits. Product Description popup.authors Авдєєв А. Алпатов А. Артамонов А. Білоножко П. Байдала В. Бражнікова Г. Бранзинський В. Візер Т. Вітушкін А. Волошенюк О.Л. Гребьонкін Ф. Григор'єв С. Демидов С. Карапетян А. Кравченко О. Лавриненко Н. Ломакін І. Мала В. Манилюк О. Марченко О. Маслова А. Меньков Є.В. Мозолєв В. Піроженко О. Палій О. Сєнькін В.ст. наук. співроб.. Савчук О. Сазіна Н. Саричев О. Стацюра Л. Тарасов С. Тарасов Ю. Федякіна Н. Фоков О. Хорошилов С. Храмов Д. Ящук О. popup.nrat_date 2020-04-02 Close