Proceedings of the Southwest State University最新文献

{"title":"Methodology for Determining Deviations of Pilotless Aircraft from a Given Trajectory by Parallaxes of Underlying Surface Images","authors":"V. G. Andronov, A. A. Chuev, I. Yudin","doi":"10.21869/2223-1560-2022-26-2-122-141","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-122-141","url":null,"abstract":"Purpose of research. Development of a methodology for determining deviations of pilotless aircrafts from a given trajectory in conditions of signals loss from navigation satellites.Methods. The technique is based on functional relationship between deviation parameters of pilotless aircrafts from a given trajectory and changes in longitudinal and transverse parallaxes of overlapping images of the underlying surface due to these deviations. Mathematical description of computational procedures for deviation parameters determination used methods of functions approximation and mathematical processing of measurement results with accuracy estimation of obtained results.Results. A methodology that includes monitoring, assessing the level and determining the magnitude and direction of deviations of pilotless aircrafts from a given trajectory was developed. A system of nonlinear equations describing functional relationship between deviation parameters and changes in parallax of overlapping images of the underlying surface is obtained. Linearization, normalization and solutions of this system of equations by the least squares method were performed. Analytical relations were obtained for a posterior accuracy assessment of the obtained results.Conclusion. The technique provides parameters detection and determination of uncoordinated deviations of pilotless aircrafts from a given trajectory with an accuracy commensurate with satellite navigation methods. The proposed approach makes it possible to reduce the number of processed corresponding points in overlapping images and the dimension of the problem being solved in comparison with known methods. This significantly reduces the level of computational and resource costs, which is of great importance for the use of developed technique on the board of miniature pilotless aircrafts.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114675709","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":"Development of the Layout of the Experimental Setup for Determining the Stiffness Coefficient of Cylindrical Springs and Studying Free Harmonic Oscillations","authors":"E. Politov, A. Rukavitsyn, W, P. Lomas Arciniega, G. R. Terán Acosta, F. E. Ávalos Cascante, R. E. Puebla Puebla","doi":"10.21869/2223-1560-2022-26-2-23-38","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-23-38","url":null,"abstract":"Purpose of research. Is to develop a layout of an experimental setup that allows conducting research with elastic elements by exercising a force impact on them as well as automatic data collection and analysis, which allows determining the stiffness coefficient and investigating simple harmonic oscillations.Methods. The developed device makes it possible to determine elasticity coefficient of the spring applying two methods – static and dynamic. The dynamic method requires strict adherence to a certain procedure of experimental stydy. In this case, the system under study is under the action of a restoring force directly proportional to the displacement, i.e. it is a simple generator of harmonic oscillations. The prototype of the experimental setup being created includes a supporting structure, a control system to which an ultrasonic distance measurement sensor is connected, and a special mobile application that allows visualizing and recording the results of measurements in a user-friendly form.Results. The developed prototype makes it possible to determine spring deformation by static and dynamic methods; the presence of a special mobile application for devices with the Android operating system allows the user to control the device from his mobile phone. The experimental device allows visualizing the obtained data graphically and export them to a file of variable values. Exported values are displayed in tabular form for further processing using statistical tools or numerical computing applications.Conclusion. To improve the quality of the educational and training process of physics students it is necessary to introduce special equipment for experimental research into the educational process. Such equipment can be applied in the studies conducted in various sections of mechanics, including kinematics, oscillatory motion, impact, elasticity, etc.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133548980","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":"The Study of Intelligent Control Elements of a Mobile Robot and Ensuring Information Security of the Process of Its Functioning in a Dynamic Environment","authors":"M. Makarov, A. Astafiev, I. A. Semenov","doi":"10.21869/2223-1560-2022-26-2-72-86","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-72-86","url":null,"abstract":"Purpose of research. The study presented in this article is aimed at establishing and substantiating the principles of effective incorporation of intelligent elements of the control system of a mobile robot operating in a dynamic environment. The subject of the study was the procedure of simultaneous localization and mapping involved in the control. Indicators related to ensuring the information security of the process of robot functioning in real operating conditions were used as the performance criterion.Methods. A methodology for the experimental study of the software procedure execution for simultaneous localization and mapping within the framework of the task of controlling a mobile robot has been developed and implemented. The main focus of the study is a computer model of an abstract mobile robot performing reconnaissance functions in a virtual dynamic environment. The incorporated elements of intelligent information processing into the procedure of simultaneous localization and mapping are convolutional and fully connected neural network layers that provide filtering of dynamic objects.Results. When conducting this experimental study, a simulation of the process of functioning of a computer model of a reconnaissance mobile robot in a virtual environment has been performed. Similar experiments have been reproduced with various structural and functional configurations of the procedure for simultaneous localization and mapping. Quantitative results have been obtained, demonstrating the accuracy of positioning the subject of the study for each of the methods of organizing this procedure. A comparative analysis of the options for using the elements of intelligent information processing within this procedure has been carried out.Conclusion. It has been established that incorporation of the elements of intelligent information processing into the procedure of simultaneous localization and mapping has an impact on the positioning accuracy of a mobile robot and the reliability of its functioning in a dynamic environment. This contributes to the compliance with information security standards when using mobile robots in real operating conditions. It is also determined that there is their excessive use, which leads to a deviation from the optimal qualities necessary for effective autonomous control of a mobile robot and information security provision.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"20 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134259412","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":"Increased Performance of Transformers Language Models in Information Question and Response Systems","authors":"D. T. Galeev, V. Panishchev, D. V. Titov","doi":"10.21869/2223-1560-2022-26-2-159-171","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-159-171","url":null,"abstract":"Purpose of research. The purpose of this work is to increase the performance of question and response information systems in Russian. Scientific novelty of the work is to increase the performance for RuBERT model, which was trained to find the answer to the question in the text. As far as a more efficient language model allows more requests to be processed in the same time, the results of this work can be used in various information question and response systems for which response speed is important.Methods. The present work uses methods of processing natural language, machine learning, reducing the size of artificial neural networks. The language model was configured and trained using Torch and Onnxruntime machine learning libraries. The original model and training dataset were taken from the Huggingface Library.Results. As a result of the study, the performance of RuBERT language model was increased using methods to reduce the size of neural networks, such as distillation of knowledge and quantization, as well as by exporting the model to ONNX format and running it in ONNX runtime.Conclusion. As a result, the model, to which knowledge distillation, quantization and ONNX optimization were simultaneously applied, received a performance increase of ~ 4.6 times (from 66.57 to 404.46 requests per minute), while the size of the model decreased ~ 13 times (from 676.29 MB to 51.66 MB). The downside of obtained performance was EM deterioration (from 61.3 to 56.87) and F-measure (from 81.66 to 76.97).","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121330250","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 for Early Diagnosis of Real-Time Traffic Loss with Timeout Monitoring in Software-Configurable Networks","authors":"K. Nikishin","doi":"10.21869/2223-1560-2022-26-2-142-158","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-142-158","url":null,"abstract":"The purpose of the research is to develop the method for early diagnosis of real-time traffic loss with time-out control in software defined networks (SDN).Methods. An overview and description of the transfer of heterogeneous traffic in an Ethernet switch with support for quality of service and Time-Triggered Ethernet technology is given. The functioning of the timeout control blocks for instantaneous removal of a frame from the hard timeout control system and depending on the length of the frame when the idle timeout receiving side is reached is described in detail. These control units are included in the hardware guard of control time-outs for real-time traffic. The work of the switch OpenFlow is described using guard of control time-outs. The formation of time windows of timeouts during frame transmission is described and developed.Results. With the help of the proposed method of early diagnosis of real-time traffic losses with control of timeouts in SDN, a modeling of SDN based on Petri nets and using the CPN Tools modeling package was carried out. The obtained model and experimental results are consistent with the theoretical calculations and the proposed method of transmitting real-time traffic, taking into account its losses in SDN.Conclusion. Using the model, the functional and temporal behavior of the model was investigated; the method was verified using Petri nets. The results were obtained in the form of time diagrams reflecting the work on traffic types in accordance with the proposed method.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114980121","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":"Multicriteria Optimization of Design Solutions for Microclimate Systems for Rooms with Artificial Ice","authors":"S. Chuykin, O. Kutsygina","doi":"10.21869/2223-1560-2022-26-2-39-52","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-39-52","url":null,"abstract":"Рurpose of research. The most energy-intensive facilities for holding sports and cultural events are indoor ice rinks and ice arenas. Simplified technical solutions when designing the systems for providing the microclimate of these structures lead to significant operating costs and can lead to serious negative consequences in a relatively short period. In this regard, the problem of developing methods for choosing the optimal design solution for these systems is becoming ever more urgent. The purpose of the article is to develop a mathematical model for multi-criteria optimization of design solutions for systems providing the microclimate of rooms with artificial ice.Methods. Determining the optimal design solution for microclimate systems in terms of several parameters, each of which can be decisive, is an applied task of system analysis, the basic principles and patterns of which were taken into account when solving the problem of multicriteria optimization.Results. A list of particular optimality criteria reflecting the qualitative and quantitative characteristics of design solutions has been determined. The method of vector criterion convolution has been used to search for the optimal solution for the selected particular criteria. An optimization model based on the principles of system analysis has been developed.Conclusion. The developed mathematical model of multicriteria optimization makes it possible to provide priority to more important particular criteria by increasing their weights. In this case, it should be remembered that particular criteria must be commensurate, and, therefore, reduced to a dimensionless form. Since the absolute values of the criteria are essential in the optimization task under consideration, for the chosen vector of parameters, it is necessary to choose exactly the additive method of folding the generalized criterion.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125239285","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":"Study of Vibration Strength of D16 Aluminum Alloy Joints Welded Applying Resistance Spot Welding","authors":"S. A. Balashov, V. V. Zezyulya, V. Bulychev, E. Ageeva","doi":"10.21869/2223-1560-2022-26-2-8-22","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-8-22","url":null,"abstract":"Purpose of research is to develop and test a technique and perform an experimental study of the vibration strength of D16 aluminum alloy joints welded applying resistance spot welding.Methods. Test coupons were made from 1 mm thick D16 aluminum alloy sheet blanks applying resistance spot welding. A feature of the proposed test is the implementation of a symmetrical loading cycle. During the tests, the number of cycles to failure depending on the range of vibrations was recorded. Annealing and thermomechanical straightening were carried out to exclude helical bending after cutout. After deburring and root facing, the surface of the coupons was prepared for welding using chemical etching. The coupons were welded using a TECNA 8214N spot welding machine. The welding current was 30 kA, the welding duration was 0.1 s, the electrodes force was 180 daN. The static shear strength of the welded joint was studied using a UTS 110M-5 1-U tensile testing machine. The breaking force was 3.66 kN. The peculiarity of the proposed test is the implementation of a symmetrical loading cycle. During the tests, the number of cycles to failure depending on the range of vibrations was recorded.Results. As a result of the statistical analysis of the study results, a linear mathematical relationship between the logarithms of the number of cycles to failure and the amplitude of vibrations was obtained. Depending on the range of vibrations, characteristic zones of destruction were revealed. To provide the possibility of comparing the results of vibration obtained under different conditions of fixing the samples, it is proposed to use the range of vibration displacement per unit length of the work[iece as the ordinate.Conclusion. A technique or studying the vibrational strength of joints welded by resistance spot welding under conditions of a symmetrical loading cycle is proposed and tested. For the studied coupons, the equality of the welded joint to the base metal is achieved at the value of the logarithm of the ratio of the range of vibration displacement per unit length of the coupons equal to 0.01.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133540313","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":"Short-Term Forecasting of Power Consumption of Power Supply Companies Based on the Integration of Technologies of Analytical, Simulation and Expert Systems","authors":"A. K. Mektepkaliyeva, A. Khanova, L. B. Aminul","doi":"10.21869/2223-1560-2022-26-2-53-71","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-2-53-71","url":null,"abstract":"Purpose of research is to improve software support and identify regularities in the processes of short-term forecasting of power consumption of power supply companies based on complementary integration of data mining models, system dynamics and expert systems.Methods. The principles of constructing predictive models of power consumption are given. A system analysis has been carried out and an ontological model of the subject area has been built, taking into account the technological and market environment. The classification of forecasting methods has been considered. The features of the information base for short-term forecasting, including data on actual power consumption and weather data, have been described. The requirements for software for making forecasts have been formulated. A block diagram of the system for forecasting power consumption of the market for the day ahead is built based on the complementary integration of data analysis and modeling software.Results. Scenarios for data processing in Loginom have been developed using the Arimax and Neural Network (Regression) processors to build forecasts based on actual power consumption and taking into account meteorological factors. A system dynamics simulation model that allows exploring the influence of meteorological factors (temperature, pressure, precipitation) on power consumption has been developed in Anylogic. Using Wi!Mi mivar constructor of expert systems, the task has been parametrized; indicators, relationships, rules have been set; a logical conclusion of the solution has been obtained.Conclusion. A block diagram of a system for forecasting the market's power consumption for the day ahead has been built. It is based on the analysis of retrospective information on actual power consumption and meteorological factors using data mining methods, system dynamics and expert systems applying Russian Loginom, Anylogic and Wi!Mi software tools.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127089329","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":"A Technique of the Distributed Information Systems Control Method Choice under the High Network Dynamics Conditions","authors":"A. Klimenko","doi":"10.21869/2223-1560-2022-26-1-57-72","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-1-57-72","url":null,"abstract":"Purpose of research. The purpose of this study is to select a method for managing a distributed system, which, based on known parameters, would reduce the consumption of resources of computing devices. The resource of an information system is understood as the probability of failure-free operation (reliability function), which degrades over time for each node, the faster, the higher its workload.Methods. Considering that with high dynamics of the edge layer of the network, the frequency of system reconfigurations becomes relatively high, and the need for reconfigurations is unpredictable, reducing the total time spent on reconfigurations makes it possible to increase the time spent on solving functional computational problems of the system and thereby reduce the load of nodes. The reconfiguration time can be reduced both by reducing the time for detecting a failure in a distributed system, and by reducing the new configuration forming time. In this paper, a method for reducing the time of the failure detection is considered. The analysis of the applicability of system control methods (centralized, with a distributed leader, decentralized) is based on the obtained analytical estimates of the time the system detects a failure under control conditions using one method or another. A numerical experiment makes it possible to identify areas of system parameters, where it is preferable to use the method with a distributed leader.Results. The main result of this work is a methodology for choosing a method for managing distributed information systems in conditions of high dynamics of the network infrastructure, focused on reducing the consumption of resources of computing devices.Conclusion. System reconfiguration time can be shortened by choosing the most appropriate control method. Thus, the time allotted for solving the functional tasks of the application increases, the workload of the computational nodes decreases, and, therefore, the FBG values increase over the planning horizon.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122314118","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":"Model and Methodology for Optimal Equipment Setting for Monitoring and Verification of Enterprises of the Automotive Cluster","authors":"E. Averchenkova, A. Shabanov","doi":"10.21869/2223-1560-2022-26-1-73-91","DOIUrl":"https://doi.org/10.21869/2223-1560-2022-26-1-73-91","url":null,"abstract":"Purpose of research. To develop a classifier of control and verification equipment, to propose a model of a set of control and verification equipment, as well as a methodology for forming an optimal set of control and verification equipment to ensure the effective functioning of an organizational and technological system for providing mechanical assembly based on threaded connections of an automated assembly process control system at automotive cluster enterprises.Methods. Calibration equipment set in the assembly production organizational and technological system based on thread joints of the automated assembly process control system at the enterprises of the automotive cluster is presented in the work on the basis of a set-theoretic approach. Set-theoretic models are used to describe the calibration equipment set. The method of hierarchical classification became the basis for the development of models. Formalization of the decision-making process on the formation of calibration equipment set is based on the methods of decision theory. Separate elements of the methodology are based on the use of methods of mathematical analysis.Results. A set-theoretic model of the calibration equipment set is proposed. A classifier of calibration equipment is proposed. The technique of making a decision on the formation of calibration equipment set is described. The technique takes into account the actual load on the sensors for measuring the torque and allowing optimize the cost of calibration equipment purchasing. The cost savings from the use of the developed models, classifiers, methods and algorithms for production technological preparation and for equipment purchasing are calculated. The application of the developed models, classifiers, methods and algorithms in the conditions of an automotive cluster enterprise shows a significant reduction in the labor intensity of technological preparation of production, as well as significant savings in financial costs for the purchase of calibration equipment set.Conclusion. The developed classifier, model and methodology for the formation of an optimal calibration equipment set make it possible to simplify managerial work at an automotive cluster enterprise and solve the problem of optimal control of calibration equipment subsystem, which is part of assembly production organizational and technological system based on thread joints of the automated assembly process control system at the enterprises of the automotive cluster.","PeriodicalId":443878,"journal":{"name":"Proceedings of the Southwest State University","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123890130","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}