Кафедра "Системний аналіз та інформаційно-аналітичні технології"
Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/7644
Офіційний сайт кафедри http://web.kpi.kharkov.ua/say
Кафедра "Системний аналіз та інформаційно-аналітичні технології" заснована в 1982 році.
Кафедра входить до складу Навчально-наукового інституту комп'ютерних наук та інформаційних технологій Національного технічного університету "Харківський політехнічний інститут". Випускники кафедри працюють у провідних ІТ-компаніях: EPAM, CloudWorks, DataArt, MedeAnalytics, NIX Solutions, CodeIT, Ciklum та багатьох інших в Україні та за кордоном.
У складі науково-педагогічного колективу кафедри працюють: 4 доктора технічних наук; 9 кандидатів наук: 8 – технічних , 1 – економічних; 4 співробітника мають звання професора, 9 – доцента.
Переглянути
4 результатів
Результати пошуку
Документ Parametric synthesis of the electronic control unit of the course stability system of the car(ПП "Технологічний Центр", 2019) Aleksandrov, Ye. Ye.; Aleksandrova, T. Ye.; Morhun, Ya. Yu.The problem of parametric synthesis of an electronic control unit for a brake system of a car is considered, which consists in the process of choice of values of the varied parameters of electronic CU. The selected parameters should provide the maximum margin of stability and maximum velocity of the closed-loop system of automatic control of a given direction of car movement in braking mode. This is important because modern high-velocity cars, operating in conditions of low-quality road surfaces of highways, often become objects of road traffic accidents, despite the fact that they are equipped with anti-lock braking and traction control systems. In this regard, the design development of the latest models of automotive equipment is aimed at creating directional stability systems, increased vehicle dirigibility in case of loss of wheel adhesion with the road surface. The problem is solved using the method of "frozen coefficients", which is based on the iterative process of sequential selection of numerical values of the varied parameters of the electronic unit. In particular, it is found that the characteristic equation of a closed-loop stability control system contains three variable parameters, and the system itself is a two-channel one. The first control channel for the inclination angle of the car body contains variable parameters, and the second control channel for side skid contains a variable parameter. It is shown that 5–6 steps of the iterative process are sufficient to obtain optimal values of the varied parameters that provide the maximum safety margin and maximum performance of the closed-loop vehicle stability program. The work proves the effectiveness of the developed algorithms for parametric synthesis of the electronic control unit for a car, the simplicity of their implementation, as well as the high quality of stabilization processes of the car body.Документ About stability of the movement of the refueling vehicle equiped with digital system of brake forces distribution during the emergency braking(Національний технічний університет "Харківський політехнічний інститут", 2021) Aleksandrov, Ye. Ye.; Aleksandrova, T. Ye.; Morhun, Ya. Yu.The impact of enforced oscillations of the free surface of fuel in the car tank on the stability area of a closed digital brake force distribution system is considered. The object of the study is the process of stabilized movement of the tanker during the emergency braking. The subject of the study is a large tanker with a gross weight (3-3.5) *104 kg, equipped with a tank with a volume of (17-20) m3 and a system of direction stability. The goal of the work is investigation of the impact of transported fuel fluctuations on the stability of the refueling vehicle during the emergency braking and introducing of methods for selecting values of variable parameters of the electronic brake force distribution system to minimize it. Conclusion. Considering the oscillations of the free surface of the liquid in the mathematical model of disturbed movement of a closed system of stability significantly reduces the stability area of the system in the low frequency range due to the loop, the size and position of which depend on the filling level of the tank. Need to choose an envelope loop that according to different levels of tank filling.Документ Parametric synthesis of а non-stationary automatic control system of the course stability of the car(Національний технічний університет "Харківський політехнічний інститут", 2020) Aleksandrov, Eugene; Aleksandrova, T. Ye.; Kostianyk, Iryna; Yaroslav, MorgunWidely used in the practice of analysis and synthesis of automatic control systems of non-stationary dynamic systems, the method of “frozen coefficients” does not havea rigorous theoretical justification and does not always lead to the desired results. In this regard, to solve the problem of parametric synthesis of a non-stationary automatic control system of the course stability of the car, an algorithmic method is co nsidered for choosing the variable parameters of the regulators of non-stationary objects, based on the direct calculation of the additive integral quadratic quality functional that reflects the set of requirements for the automatic regulator of a non- stationary object, followed by finding the values of the variable parameters a regulator delivering a minimum of quality functional, and the required values of the weight coefficients of the additive functional.Документ To the question of constructing the regionof allowable values of variable parameters of a digital stabilizer of a movable object(Національний технічний університет "Харківський політехнічний інститут", 2020) Aleksandrov, Eugene; Aleksandrova, T. Ye.; Kostianyk, Iryna; Morgun, YaroslavSolving the problems of analysis and synthesis of closed digital systems for stabilization of movable objects is associated with significant difficulties. One of the possible ways to solve the problem is the transition from a mathematical model of a continual-discrete closed stabilization system to an approximate mathematical model of a discrete closed system using infinite matrix series containing the own matrix and the control matrix of the continuous part of the system, as well as the quantization period of the discrete part. Using the example of a closed digital stabilization system for a space stage of a solid-propellant carrier rocket flying in an airless space with a marching engine turned on, the problem of constructing stability regions of a closed digital stabilization system in the plane of variable parameters of a digital stabilizer was solved and a comparative analysis of these regions was carried out for various numbers of members of matrix seriestaken into account and different values of the digital stabilizer quantization period.