Browsing by Author "Ablesimov, Aleksandr"

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Correction of the quality of stabilization systems
(Osvita Ukrainy, 2016-06) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Bardon, Liliya; Бардон, Лілія Владиславівна; Kutova, Natalya; Кутова, Наталія Ігорівна
Considered the methods of determining the desired frequency characteristics of the stabilization systems of the inertial control objects while the synthesis of their corrective devices.
Digital stabilization system
(National Aviation University, 2021-04-27) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Zhmurchyk, Tatyana; Жмурчик, Тетяна Петрівна; Rud, Andrei; Рудь, Андрій Андрійович; Tsoba, Arthur; Цьоба, Артур Олександрович
A model of a discrete system for stabilizing the ship's course has been developed and the results of research on the choice of an optimal digital controller for it are presented. The method of the describing function is used as a research method. In developing a mathematical model of a discrete system, a typical block diagram of a continuous stabilization system was used. The location of the quantizer and extrapolator in it was determined. The latter was selected as a zero-order extrapolator, as the simplest, easily implemented with standard equipment, although the use of a first-order extrapolator can give some advantage in the accuracy of information recovery. Modeling is carried out in state variables and in a classical way based on a discrete transfer function of stabilization system. For the research, the package of visual block simulation modeling of the MatLab matrix system was used. Modeling of the system of stabilization with different types of controllers allowed to carry out their comparative assessment. To improve the properties of the digital proportional integral derivative controller, it is proposed to introduce in it a correction system.
Evaluation of the quality of stabilization systems by normalized indirect indicators
(Osvita Ukrainy, 2015-03) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Kutova, Natalya; Кутова, Наталія Ігорівна
Considered normalized indirect indicators of quality of stabilization systems of inertial control objects and methods of their calculation with the help of frequency responses.
Odometrical Navigation Systems
(National Aviation University, 2024-03-29) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович
The technology for determining the location of an object on the ground is the foundation for building vehicle navigation systems and surveillance systems after them. In general, such navigation systems make it possible to determine the coordinates of the vehicle’s location and its directional angle, find the direction to the destination, and calculate the coordinates of observation objects. The technical implementation of systems can be quite diverse – from implementation on mechanical elements to their implementation using microelectronics elements. The main factors in the development of navigation systems are the transition to computer-integrated systems and resource-saving technologies. This will make it possible to increase the accuracy of navigation information, obtain a significant gain in the weight and size characteristics of the equipment, reduce its energy consumption and increase reliability. The possibility of modernization of odometrical navigation systems based on integrated computer technologies is considered.
Orientation and stabilization of small space vehicles
(National Aviation University, 2021-12-21) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Tsoba, Arthur; Цьоба, Артур Олександрович
The possibility of using system state observers in the orientation and stabilization systems of small space vehicles is considered. A comparative assessment of systems with a system state observer and classical execution is carried out. For comparison the criteria of stability of automatic systems, criteria for assessing quality in steady-state and transient modes of operation, criteria for assessing quality under the action of random disturbing influences were used. The method of mathematical modeling is used as a research method. For its implementation, mathematical models of systems and their components have been developed. Simulation is done in state variables. The synthesis is based on the apparatus of modern control theory. It has been established that the use of a system state observer in the orientation and stabilization systems of small space vehicles will not only reduce their weight and dimensions, increase their reliability and reduce the cost of components, but also provide practically the same control quality indicators as in the classical version.
PID-controller synthesis software for the stabilization system of the inertial control object
(National Aviation University, 2020-03-24) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Pylypenko, Maria; Пилипенко, Марія Олександрівна; Zhmurchyk, Tatyana; Жмурчик, Тетяна Петрівна
Reviewed software creation method for the selection an optimum regulator for the stabilization system of the inertial control object. PID-controller synthesis software implemented by Python and it`s libraries: SciPy, NumPy and Control Systems Library. Schematic decisions of regulators and correction devices for stabilization systems may be different: P, PI, PD, PID. The first three options can be generally obtained by applying restrictions on the PID-model. The exact adjustment of the PID-controller parameters significantly reduces system fluctuations. The full use of the PID-controller advantages is only provided with the correct calculation of these parameters, taking into account the unique characteristics of the controlled objects. At the same time, it is important to have a mechanism (program) for coefficients controlling that would provide a convenient interface between the program and the user.
REACTION OF STABILIZATION SYSTEM ON THE COMMANDS OF OPERATOR. ACCURACY OF STABILIZATION
(Kyiv, “Osvita Ukrainy”, 2016-03) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Bardon, Liliya; Бардон, Лілія Владиславівна; Kutova, Natalya; Кутова, Наталія Ігорівна
The accuracy estimation method of stabilization systems of inertial control objects, that operates on a movable base in modes of stabilization and stable guidance at random disturbance influences and control signals is considered.
Stability borders and regions of stabilization systems of inertial control objects
(Osvita Ukrainy, 2014-12) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Bardon, Liliya; Бардон, Лілія Владиславівна
The method of calculation and construction of the stability border and the region in the plane of two parameters have been considered.
Summation Circuits of Automatic Control Systems
(National Aviation University, 2024-03-29) Ablesimov, Aleksandr; Аблесімов, Олександр Костянтинович; Miroshnychenko, Vladyslav; Мірошниченко, Владислав Анатолійович; Chubatyuk, Ilya; Чубатюк, Ілля Ігорович
During the operation of the stabilization systems, the parameters of the control object and the regulator can change for various reasons within fairly wide limits. In such cases, they speak of the presence of parametric uncertainty. Note that the main indicator of the quality of the stabilization system is considered to be the accuracy of the stabilization of the control object. As theoretical studies show, the accuracy of stabilization systems directly depends on their rigidity and damping, because they directly affect the formation of the moment of stabilization and determine the effectiveness of the system's response to external disturbances. Changing stiffness and damping in order to ensure the necessary efficiency of stabilization systems is the basis of their operational adjustments. To change these parameters, there are summation circuits in the systems. Will the change in the summation circuit type affect the solution to the main task of the operational adjustment of the stabilization system? This article considers the possibilities of summation circuits to ensure the optimality of the settings of the stabilization system.