Факультет робототехніки та штучного інтелекту
Постійне посилання на фондhttps://repository.lntu.edu.ua/handle/123456789/3434
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Item type:Наукова стаття, Increasing the Speed and Performance of the Drupal CMS Server for Industrial IoT Technologies(2023) Satsyk, Viktor; Cagáňová, Dagmar; Reshetylo, Oleksandr; Zabolotnyi, Oleg; Tkachuk, AnatoliiIn this paper, the methods of increasing the speed and performance of the Drupal CMS-based server in IIoT technologies were analyzed. Three main load parameters were taken into account: processor time (CPU), level of server RAM usage, and disk memory usage level; on three pages of the WEB site (main, list of blogs, and a page with one blog) and two research methods were applied: generalized and detailed. Based on the results of the analysis of four options for optimizing Drupal CMS for IIoT technologies: basic, using additional installed modules, servers, and configurations, and Drupal Hooks, effective, simple, cost-effective methods were synthesized that guarantee an increase in server speed and productivity. It was found that the optimization of configurations and Drupal Hooks is the most effective since after its implementation, the response of a page with one blog increased by 9.32 requests per second; built-in optimization is extremely simple to implement and inefficient, while server-side optimization is inefficient, most complex and expensive to implement.Item type:Наукова стаття, Research of Dynamic Processes of Working Medium Movement in a Vibrating Bunker(Springer, Cham, 2025) Symonyuk, Volodymyr; Denisyuk, Viktor; Lapchenko, Yuriy; Ptashenchuk, Vitaliy; Reshetylo, OleksandrThe article presents the results of the study of the regularities of the formation of the circulating vortex motion of the working medium and the behavior of the vibrating hopper body under conditions of symmetric shock-impulse loading. It was established that such loads cause slow circulating motion of the medium, the intensity of which increases with the asymmetric nature of the impacts. This motion has the form of a ring or arc-shaped vortex, covering the entire volume of the working medium. For the analysis of vortex processes, it is advisable to use the integral form of the law of conservation of momentum within the control volume. It is shown that the average circulation speed depends on the impact force, the initial velocity of the vibrating hopper and the mass of the working medium, and the angular velocity of the vortex motion is proportional to the average circulation speed.Item type:Наукова стаття, Intermittent Abrasive Tool for Machining the Butt Ends of Bearing Rings(Springer, Cham, 2025) Ptashenchuk, Vitaliy; Denisyuk, Viktor; Lapchenko, Yuriy; Symonyuk, Volodymyr; Reshetylo, OleksandrA design of an intermittent abrasive tool has been developed for processing flat surfaces, in particular the ends of bearing rings. The presented design of the abrasive wheel allows to reduce the temperature of the surface layer and ensure its high cutting ability, which makes it possible to stabilize the quality parameters of the surface layer and avoid product defects. The use of the technology of supplying cooling fluid through the working surface of the abrasive wheel directly into the processing zone under pressure made it possible to minimize the width of the groove of the intermittent wheel and ensure its high cutting ability by preserving a large number of abrasive grains and cleaning the surface of the wheel from grinding products. The use of the presented design of the intermittent tool made it possible to improve the roughness of the ends of the bearing rings by 0.5 microns and increase the hardness of the surface layer by 1.5-2 HRC units, avoid burns, product defects and increase the efficiency of the process of flat abrasive processing.Item type:Наукова стаття, Automated Control System Qualities of Roller Bearings in Butt End Grinding Operations(Springer, Cham., 2025) Ptachenchuk, Vitalij; Denysiuk, Viktor; Lapchenko, Yuri; Symoniuk, Volodymyr; Reshetylo, OleksandrAn automated system for controlling the quality of the surface layer during grinding has been developed, which makes it possible to carry out highly productive and defect-free processing of flat surfaces of structural steels by energy parameter, cutting power in particular. The proposed system makes it possible to avoid scorch marks, reduce the hardness of the material surface due to uneven workpiece allowance and high temperatures in the cutting zone, and stabilize roughness. The operation of the adaptive system is based on temperature moni-toring of the surface layer, which is determined by the operating parameters of the machining process (workpiece feed rate, allowance size, and cutting ability of the abrasive tool). An algorithm for the operation of an automated quality con-trol system for the machining of roller bearing rings in centerless face grinding operations has been developed, which takes into account the unevenness of the machining allowance and allows for automatic dressing of grinding wheels as they become blunt. The use of the automated system made it possible to stabilize the parameters of the surface layer of the ends of bearing rings in terms of roughness at the level of 0.4–0.6 μm and hardness of 60–62 HRC, to avoid scorch marks and product defects, and to improve the efficiency of the process of machining flat surfaces in the machine-building industry.Item type:Наукова стаття, Modeling of interception parking lots(2025-09) Gumeniuk, Larysa; Lotysh, Volodymyr; Humeniuk, Pavlo; Reshetylo, Oleksandr; Syrota, YuriyThis paper is devoted to solving the problem of effective traffic flow management and parking lot organization by creating interception parking lots that help reduce traffic jams and improve parking availability. An algorithm has been proposed, and a simulation model of an interceptor parking lot has been implemented in Python. The development allows for the examination of the dynamics of parking lots, taking into account changes in traffic intensity throughout the day and week. It provides extensive opportunities for configuring parameters such as the number of lanes, parking lot capacity, vehicle arrival intensity, and duration of stay. The developed model can be helpful for urban planners, commercial parking lot owners, and researchers working on optimizing the use of urban space. Its integration with modern IoT solutions opens up prospects for the creation of intelligent parking systems that will help reduce traffic congestion, increase driver comfort, and reduce the impact of motor transport on the city's environment.