Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi最新文献

{"title":"ASSESSMENT OF THE INFLUENCE OF THE OPERATING MODES OF THE ELECTRIC TRACTION SYSTEM ON LOSSES FROM UNEVENNESS OF ELECTRICITY CONSUMPTION AND MEASURES TO REDUCE THEM","authors":"A. Sydorenko, S. Yatsko","doi":"10.32703/2617-9040-2022-39-11","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-11","url":null,"abstract":"The article considers the current problem of uneven electricity consumption in railway transport and steps to reduce it. The analysis of conditions of operation of traction rolling stock is carried out. Based on the results of the analysis, the characteristics of the modes of operation of traction rolling stock of railway transport and energy processes in the system of electric traction during their implementation are given. The factors that lead to energy losses due to uneven traction power consumption are presented. Indicators for estimating the unevenness of traction electricity consumption in the case of the subway and suburban rail transport are proposed. The use of integrated energy indicators peak factor and shape coefficient is proposed as indicators. The peak factor characterizes the level of excess power of the power supply system, the shape coefficient - losses in the traction power supply system. According to these indicators, the time diagrams of electricity consumption at the feeder of the railway traction substation and the subway electric train were evaluated. The results of the quantitative assessment confirmed the adverse effect of certain factors on the unevenness of traction power consumption. It was found that the modes of operation of the subway electric train provoke more significant energy losses in the elements of the traction power supply system compared to the railway. It is proved that regenerative braking increases the unevenness of energy consumption, increasing the load on the traction network and contributing to the emergence of pulsed currents in the traction power supply system. Concepts for overcoming the problems of uneven traction power consumption and the use of excess energy recovery are based on the use of energy storage as an additional power source for traction drive.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45749748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"APPROACHES AND PROSPECTS OF IMPROVEMENT OF DUMP CARS FOR OPERATION ON 1520-mm MAINLINE RAILWAYS","authors":"A. Sulym, P. Khozia, A. Strynzha, V. Rechkalov, V. Fedorov","doi":"10.32703/2617-9040-2022-39-6","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-6","url":null,"abstract":"The article deals with the models of dump cars, which form the major part of the mainline railway car fleet of 1520 mm. The technical characteristics of the most common mainline dump cars models are given. The design features of the dump car model 31-638, designed for transportation and mechanized unloading of bulk and lump cargo, are presented. Modern models of dump cars of domestic and foreign production for the main railway transport of 1520 mm track, which were constricted and put into serial production in recent years, are presented. The results of comparative analysis of technical characteristics of dump cars of the last generation to modern models of dump cars showed that one of the main advantages of the latter is reduction of container weight, increase of load capacity and body volume, improving of strength and reliability of separate units and systems. The problem units and systems of the existing models of main-line dump cars are determined based on the results of their operation, which need further strengthening. The focus areas of improving the design of modern models of dump cars for the 1520 mm main railway vehicles are defined. The technical requirements for the next generation dump cars, which are planned to be constructed and put into serial production in the coming years for operation on the mainline railway tracks, are proposed. The technical requirements are formed taking into account the research results of modern mainline dump cars design, review of technical and design documentation for these railway vehicles, as well as analysis of requirements and wishes of customers. The necessity of carrying out relevant research and engineering works on the development of new generation dump cars for the main railway transport is substantiated. The content of the article will contribute to the construction of new models of dump cars for the main railway transport and significant upgrading of existing models, as well as increase the efficiency of their operation.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47911182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"LUBRICANT COMPOSITION FOR INCREASING WEAR RESISTANCE OF HEAVY-LOADED FRICTION PAIRS","authors":"V. Kosarchuk, M. Chausov, V. Tverdomed, A. Pilipenko, O. Aharkov","doi":"10.32703/2617-9040-2022-39-4","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-4","url":null,"abstract":"The proposed new lubricating composition, which significantly reduces the wear resistance of the rails and wheels of rolling stock during operation, prevents electrochemical corrosion of friction pairs “wheel – rail” and, most importantly, stabilizes the coefficient of friction at the optimum level after a relatively short operating time. The experiments performed on the friction pair “sample of the bandage material of the railway wheel – a sample of the rail material” at the ratio of hardness at the bandage material (Rockwell hardness, HRC scale - 35.3) to the hardness of the rail material 1,1. Test results show that in the case of industrial lubricant, the BioRail brand, with the addition of nanomaterial friction pair with lower wear hardness of the rail metal sample after three hours in operation was practically not observed. Moreover, the average value of the friction coefficient for three hours of operation had been maintained at the level 0.25, which is optimal for the friction pair “wheel – rail”.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42862980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SIMULATION AND INTELLECTUAL ANALYSIS OF AUDIO FREQUENCY TRACK CIRCUIT PARAMETERS","authors":"I. Saiapina, O. Gorobсhenko, V. Demchenko, Y. Stompel","doi":"10.32703/2617-9040-2022-39-16","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-16","url":null,"abstract":"To improve the method of increasing the noise immunity of a audio frequency track circuit, based on cutting out interference in the intervals between useful signal pulses, an analysis was made of fluctuations in the signal transit time in the transmission path of a audio frequency track circuit depending on its operation parameters: signal current frequency, rail line length, insulation resistance and ambient temperature. For this, a simulation model of the operation of a audio frequency track circle has been developed. Based on the simulation results, a relational database was created with the values of measurement characteristics. With the use of intellectual analysis methods it was determined that the main factor affecting the signal transit time in the transmission path of the audio frequency track circuit is the frequency of the signal current. The main dependences of the operation parameters of the audio frequency track circuit and the signal transit time are determined. The obtained results help to increase the noise immunity of the operation of audio frequency track circuits due to a more precise adjustment of the interference cut-off interval between the useful signal pulses.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43230174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MODELING OF MANAGEMENT OF INTELLIGENT SYSTEMS IN TRANSPORT","authors":"K. Tkachenko, O. Tkachenko","doi":"10.32703/2617-9040-2022-39-24","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-24","url":null,"abstract":"The article considers topical problems of modeling control processes in intelligent systems in transport. Management of such systems also involves control and monitoring of the processes of their design and maintenance. The article proposes an ontological model of process control of intelligent systems in transport. The proposed ontological model is necessary for the formation of a common understanding of the essence of the subject area, which is the transport sphere (transport systems, transport enterprises, vehicles and transport infrastructure). The proposed ontological model contributes to the presentation of knowledge in a form that is convenient for their processing in the intelligent system of transport; ensuring the possibility of obtaining and accumulating new knowledge. The proposed ontological approach provides multiple use of knowledge and previously developed ontologies. The proposed approach allows the use of modern multi-agent technology, when each agent has its own ontological model. The considered ontological approach to modeling of management of intelligent systems allows to pass to automatic control of processes in these systems (in the presence of the corresponding restrictions). The developed ontological model of the subject area is planned to be expanded and supplemented with new components, imposing appropriate restrictions. The OWL software code obtained from the simulation results in Protégé can be further used within the knowledge base of the intelligent system, processing this information in various software applications, including Java applications.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41787945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"METHOD OF FINDING ENERGY CENTERS OF LASER PATHS IMAGES FRAGMENTS","authors":"L. Tymchenko, N. Kokriatska, A. Gertsiy, D. Zhuk, V. Kaplun, N. Dubova","doi":"10.32703/2617-9040-2022-39-23","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-23","url":null,"abstract":"Considered method of finding energy fragments of images of laser tracks in real time and its application for image recognition problems are considered. Given theoretical information, experimental research and software implementation of the image recognition system similar to natural structures. Presented an analysis of recent work on neurobiology and work related to the modeling of neural mechanisms. The main problems in the existing work related to the modeling of information perception systems in a natural way have been identified. The aim of the study is the software application of the method of finding the energy centers of images in real time to optimize these energy centers. The task of the research is to analyze the application of the method of finding the energy centers of fragments of images of laser paths. Carried out the description of the method of analysis of images of laser tracks on the basis of determination of the center of gravity on the basis of moment signs is carried out. Described an example of work is given and the main functionality of the laser image processing program. Presented samples of reference images and individual fragments of long laser paths used in the experiments, as well as the curves of their energy centers. Shown computer simulation of laser path image processing was performed, as a result of which the adequacy of the calculated results.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42951570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SYSTEMATIZATION OF ECONOMYKO-TECHNOLOGICAL STATIONS OF PASSENGER CARS IN OPERATION","authors":"Y. Kalabukhin, I. Martynov, A. Trufanova","doi":"10.32703/2617-9040-2022-39-8","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-8","url":null,"abstract":"The efficiency of passenger transportation by rail depends on the level of technical condition of the passenger rolling stock. The repair and maintenance system is also important. The authors analyzed the technological states of a passenger car can during operation. It is shown that the time spent in these states and the set of technological operations that are performed at the same time do not fully reflect the relationship between the resources consumed for their implementation, the operating costs of these resources and the results. The article presents the results of systematization of the technological states of passenger cars. At the same time, the procedure for accounting for operating costs for the main types of economic activity of Ukrainian railway transport was used. A system of technical and economic indicators is proposed. It characterizes the availability and efficiency of the use of operating costs for the operation and maintenance of passenger cars in a technically sound condition. The concept of \"economic and technological state of a passenger car\" is substantiated. The systematization made it possible to combine, on a scientific basis, the technological and economic aspects of the operation and maintenance of passenger cars in a technically sound condition in the conditions of JSC \"Ukrzaliznytsia\". This will improve the system of indicators for the technical and economic evaluation of the effectiveness of the use of existing passenger cars. The proposed system will be used to justify options for updating the fleet of passenger cars through the acquisition of new models or the modernization of existing ones, taking into account the cost of the life cycle.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48412580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESEARCH ON THE MODEL OF ASYNCHRONOUS TRACTION ENGINE OF THE AC ELECTRIC LOCOMOTIVE","authors":"Y. Dubravin, V. Tkachenko","doi":"10.32703/2617-9040-2022-39-17","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-17","url":null,"abstract":"Promising electromotive rolling stock is based on application of asynchronous traction engines with a short-circuited rotor. The use of asynchronous traction motor controller allows: increase power, tractive force and speed of electromotive rolling stock, promote reliability and bring down the cost of life cycle, increase lifetime. In addition to this asynchronous traction motor controller of double power gives an opportunity to provide train traffic through the areas of direct current with a voltage of 3 kV as well as on the areas of alternating current with voltage of 25 kV at a frequency of 50 Hz without replacement of electromotive rolling stock. In the article the mathematical model of asynchronous traction engine is considered taking into account electric and mechanical part of traction motor controller. A model describes electromagnetic processes in stator windings in the fixed α, β, γ coordinate system, which has its axis combined with the axis of stator phases A, B, C. Processes in a shortcircuited rotor are described in the rotating a, b, c coordinate system. For the modeling of mechanical part of motor controller basic equation of dynamics, that characterizes ratio between an electromagnetic torque and section modulus in the shaft of the electric motor, is used. In a proposed model simulation and structural modeling methods were implemented by means of function modules of the Simulink library. A model allows to investigate transition processes given: nonsinusoidal and asymmetric supply voltage; saturation of the magnetic system; current crowding out effect in the rotor conductors; presences of shortings between the turns of the stator winding and damages of rotor rods. A mathematical model is implemented as matrix Simulink model of asynchronous engine in MatLab. Credibility of the mathematical model was checked up while conducting virtual researches of electromechanics characteristics of asynchronous engine of type AD914.The outcome confirmed the adequacy of the implemented model and the possibility of the implemented model to be used in other applications.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48715454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CONSTRUCTION OF A MODEL OF NONLINEAR DEFORMATION OF SPATIALLY-REINFORCED FIBER MATERIALS WITH DISORDERED FIBERS","authors":"E. Shikula","doi":"10.32703/2617-9040-2022-39-15","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-15","url":null,"abstract":"A model of nonlinear deformation of fibrous materials of multidirectional reinforcement with misoriented fibers and a physically nonlinear matrix is proposed. A spatially reinforced fibrous material is regarded as a multicomponent material with a random arrangement of fibers. It is based on stochastic differential equations of the physically nonlinear theory of elasticity. The solution to the problem of the stress-strain state and the effective properties of the composite material is constructed by the method of conditional moments of L.P. Khoroshun. An algorithm for determining the effective deformative properties of a spatially reinforced material with a physically nonlinear matrix has been developed. The solution of nonlinear equations taking into account its physical nonlinearity is constructed by an iterative method. The law of connection between macrostresses and macrostrains in a spatially reinforced material and the dependence of average strains and stresses in its matrix on macrostrains have been established. Material deformation curves are plotted for various values of the fiber volumetric content. The dependence of the effective deformative properties of the spatially reinforced material on the volumetric content of fibers has been studied. The influence of the nonlinearity of the matrix on the deformation of a spatially reinforced composite material is investigated. It has been established that the nonlinearity of the matrix has a significant effect on the effective deformative properties and the stress-strain state of spatially reinforced materials.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48569950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INFLUENCE OF WHEEL PROFILE AND HARDNESS ON TRACK STABILITY WITH DIFFERENT CONSTRUCTIONS OF FASTENINGS","authors":"V. Demchenko, S. Hulak, O. Demchenko, D. Zaika","doi":"10.32703/2617-9040-2022-39-1","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-39-1","url":null,"abstract":"Experimental researches on establishment of technical parameters of intermediate rail fastenings concerning maintenance of longitudinal stability of rail threads, establishment of technical parameters of intermediate rail fastenings on maintenance of longitudinal stability of rail threads are carried out. The researches of influence of technical characteristics of hardness at interaction of a rail and a wheel and their influence on the level of longitudinal forces of interaction between elements of a track and wheels of a rolling stock in operation on the railways of Ukraine are analyzed. After the start of operation of wheel pairs with the increased value of hardness the optimum ratio of hardness of rail and wheel steel was broken. It is known from various sources regarding the interaction of the rail and the wheel that metals with approximately same hardness show better wear resistance in the friction pair. Based on the obtained data, calculations were performed and their analysis was carried out with the development of recommendations for further operation.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49118357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}