S. Yudachev, N. Gordienko, D. A. Gordienko, P. A. Monakhov, S. Sitnikov
The main conclusions of the convergence methods are given. The method of proportional approximation is described in detail. Structural schemes are presented: the block of formation of the control action, the block of the kinematic model of the three-contour control system of the object and the blocks of movement of the object "target" and the control object. The work was carried out in a package of application programs for solving MATLAB technical computing problems. The simulation process was performed in the MATLAB Simulink extension. The practical significance of the work is the study of the basic principles of modeling automatic control systems using various methods of convergence; the study of the method of proportional convergence, the creation of models of the movement of objects in the MATLAB Simulink application software package. This work can be used not only for teaching students in the field of development of electronic automatic control devices and for laboratory work, but also in the creation and design of real receiving radio navigation devices both in production and within higher education institutions. Familiarization and studies of the above software are conducted at the Department of Radioelectronic Systems and Complexes of one of the leading engineering universities of the Russian Federation – Bauman Moscow State Technical University.
{"title":"Simulation of an automatic piloting system based on the MATLAB Simulink program for complex production automation","authors":"S. Yudachev, N. Gordienko, D. A. Gordienko, P. A. Monakhov, S. Sitnikov","doi":"10.33920/pro-2-2212-01","DOIUrl":"https://doi.org/10.33920/pro-2-2212-01","url":null,"abstract":"The main conclusions of the convergence methods are given. The method of proportional approximation is described in detail. Structural schemes are presented: the block of formation of the control action, the block of the kinematic model of the three-contour control system of the object and the blocks of movement of the object \"target\" and the control object. The work was carried out in a package of application programs for solving MATLAB technical computing problems. The simulation process was performed in the MATLAB Simulink extension. The practical significance of the work is the study of the basic principles of modeling automatic control systems using various methods of convergence; the study of the method of proportional convergence, the creation of models of the movement of objects in the MATLAB Simulink application software package. This work can be used not only for teaching students in the field of development of electronic automatic control devices and for laboratory work, but also in the creation and design of real receiving radio navigation devices both in production and within higher education institutions. Familiarization and studies of the above software are conducted at the Department of Radioelectronic Systems and Complexes of one of the leading engineering universities of the Russian Federation – Bauman Moscow State Technical University.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121362027","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}
S. Yudachev, P. A. Monakhov, N. Gordienko, S. Sitnikov
The article presents the finding of the dispersion of intrinsic noise distributed according to Rayleigh's law to find a signal with an unknown initial phase according to the Neumann- Pearson criterion. This algorithm is used for primary signal processing. The practical significance of the work is the study of the basics of programming in C and Python, comparison and identification of the advantages of this algorithm in comparison with the evaluation by the average value method. It also shows the finding of the threshold at which a decision is made to detect a useful signal. In this work, the integrated programming environment Visual studio was used – a popular environment for writing, debugging and compiling code. It also contains most of the libraries used, which simplify the writing of code. And Anaconda is a distribution for the Python programming language, which includes a set of free libraries, which is also freely available. Using the C language, the task of calculating data and filling it into an array was performed, Python was used for modeling, constructing histograms and comparing the results obtained with theoretical ones. This work can be used for teaching students of higher educational institutions for the purpose of familiarization. The optimal method is considered. Familiarization and study of these programming languages are conducted within the walls of one of the leading engineering universities of the Russian Federation, the Bauman Moscow State Technical University.
{"title":"Median algorithm for estimating the variance of intrinsic noise when detecting a signal with an unknown initial phase","authors":"S. Yudachev, P. A. Monakhov, N. Gordienko, S. Sitnikov","doi":"10.33920/pro-2-2212-05","DOIUrl":"https://doi.org/10.33920/pro-2-2212-05","url":null,"abstract":"The article presents the finding of the dispersion of intrinsic noise distributed according to Rayleigh's law to find a signal with an unknown initial phase according to the Neumann- Pearson criterion. This algorithm is used for primary signal processing. The practical significance of the work is the study of the basics of programming in C and Python, comparison and identification of the advantages of this algorithm in comparison with the evaluation by the average value method. It also shows the finding of the threshold at which a decision is made to detect a useful signal. In this work, the integrated programming environment Visual studio was used – a popular environment for writing, debugging and compiling code. It also contains most of the libraries used, which simplify the writing of code. And Anaconda is a distribution for the Python programming language, which includes a set of free libraries, which is also freely available. Using the C language, the task of calculating data and filling it into an array was performed, Python was used for modeling, constructing histograms and comparing the results obtained with theoretical ones. This work can be used for teaching students of higher educational institutions for the purpose of familiarization. The optimal method is considered. Familiarization and study of these programming languages are conducted within the walls of one of the leading engineering universities of the Russian Federation, the Bauman Moscow State Technical University.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"70 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121568738","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}
The paper conducts theoretical studies of literary sources containing a theoretical definition of the components of cutting forces, cutting depths for each of the passes when threading and tolerances for a given degree of accuracy. As a result of the study, a method for determining the number of stripping passes when cutting metric threads was revealed.
{"title":"Determination of the number of stripping passes when cutting metric threads on a shaft in a three-cam chuck","authors":"V. A. Tuzhilkin, A. Brylev","doi":"10.33920/pro-2-2212-03","DOIUrl":"https://doi.org/10.33920/pro-2-2212-03","url":null,"abstract":"The paper conducts theoretical studies of literary sources containing a theoretical definition of the components of cutting forces, cutting depths for each of the passes when threading and tolerances for a given degree of accuracy. As a result of the study, a method for determining the number of stripping passes when cutting metric threads was revealed.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114151201","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}
The paper analyzes the impact on the energy intensity of the modes and parameters involved in the cutting process. An example of the energy intensity calculation method is given, considered in the cutting modes obtained by the above methods. The results of the work will allow selecting the most energy-intensive cutting modes at the stage of technological preparation of production.
{"title":"The energy intensity of mechanical processing depending on the cutting modes on the example of longitudinal turning","authors":"M. A. Sundetov, S. Mukhambetov,, V.L. Kiselyov","doi":"10.33920/pro-2-2212-02","DOIUrl":"https://doi.org/10.33920/pro-2-2212-02","url":null,"abstract":"The paper analyzes the impact on the energy intensity of the modes and parameters involved in the cutting process. An example of the energy intensity calculation method is given, considered in the cutting modes obtained by the above methods. The results of the work will allow selecting the most energy-intensive cutting modes at the stage of technological preparation of production.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131286362","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}
S. Yudachev, S. Sitnikov, P. A. Monakhov, N. Gordienko
Methods of calculating the sine in a programmable logic integrated circuit are considered and investigated. Conclusions are given based on the technical characteristics of the devices and the capacity of a particular method. Models were created in C++ and Verilog languages, worked out and analyzed. The results of the models are presented in the form of graphs. Mathematical calculations are given that make it possible to implement the method of calculating the sine in a programmable logic integrated circuit in the most optimal way from the point of view of using equipment. The synthesis and layout of the equipment were carried out, the area of the crystal occupied by the calculation module is presented in the form of a figure. This work can be used to train students of higher educational institutions in order to familiarize and develop skills of working with FPGAs, as well as modeling and studying the principles of choosing a particular mathematical method, can find its application in the creation and design of real devices in production. Familiarization and study of this radar method are conducted within the walls of one of the leading engineering universities of the Russian Federation — Bauman Moscow State Technical University.
{"title":"Methods of programming of CNC machines","authors":"S. Yudachev, S. Sitnikov, P. A. Monakhov, N. Gordienko","doi":"10.33920/pro-2-2212-06","DOIUrl":"https://doi.org/10.33920/pro-2-2212-06","url":null,"abstract":"Methods of calculating the sine in a programmable logic integrated circuit are considered and investigated. Conclusions are given based on the technical characteristics of the devices and the capacity of a particular method. Models were created in C++ and Verilog languages, worked out and analyzed. The results of the models are presented in the form of graphs. Mathematical calculations are given that make it possible to implement the method of calculating the sine in a programmable logic integrated circuit in the most optimal way from the point of view of using equipment. The synthesis and layout of the equipment were carried out, the area of the crystal occupied by the calculation module is presented in the form of a figure. This work can be used to train students of higher educational institutions in order to familiarize and develop skills of working with FPGAs, as well as modeling and studying the principles of choosing a particular mathematical method, can find its application in the creation and design of real devices in production. Familiarization and study of this radar method are conducted within the walls of one of the leading engineering universities of the Russian Federation — Bauman Moscow State Technical University.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128111109","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}
S. N. Prudnikov, A. V. Novgorodskaya, V. Yarots, N. Savko
This article discusses various ways to unload force factors in rotary vane machines. The effectiveness of unloading with the help of electromagnetic forces is shown. Methods for reducing mechanical losses due to the friction of the plates against the machine body are given.
{"title":"Improving the efficiency of rotary vane machines","authors":"S. N. Prudnikov, A. V. Novgorodskaya, V. Yarots, N. Savko","doi":"10.33920/pro-2-2211-04","DOIUrl":"https://doi.org/10.33920/pro-2-2211-04","url":null,"abstract":"This article discusses various ways to unload force factors in rotary vane machines. The effectiveness of unloading with the help of electromagnetic forces is shown. Methods for reducing mechanical losses due to the friction of the plates against the machine body are given.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127051137","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}
O. Gubanov, V. Gadalov, A. Filonovich, P. Shirobokov
The results of a study of the effect of combined processing on the structure and physical and mechanical properties of electrophysical coatings after smoothing with a specially designed tool and devices are presented. After smoothing in the optimized mode and additional In the heat treatment of the composite, the authors found polygonal structures in the PIA structure, which positively affect the fatigue strength of the composite. In the coating under a slight load, slip lines were observed, in which dislocations mix freely. In the smoothed coating, sliding in these planes was hindered due to the formation of polygonal structures and the pinning of dislocations by impurity atoms and their clusters, which will contribute to an increase in fatigue resistance.
{"title":"Study of the influence of combined processing on the structure and properties of electrospark coatings on low-carbon steel using a self-fluxing special electrode","authors":"O. Gubanov, V. Gadalov, A. Filonovich, P. Shirobokov","doi":"10.33920/pro-2-2211-02","DOIUrl":"https://doi.org/10.33920/pro-2-2211-02","url":null,"abstract":"The results of a study of the effect of combined processing on the structure and physical and mechanical properties of electrophysical coatings after smoothing with a specially designed tool and devices are presented. After smoothing in the optimized mode and additional In the heat treatment of the composite, the authors found polygonal structures in the PIA structure, which positively affect the fatigue strength of the composite. In the coating under a slight load, slip lines were observed, in which dislocations mix freely. In the smoothed coating, sliding in these planes was hindered due to the formation of polygonal structures and the pinning of dislocations by impurity atoms and their clusters, which will contribute to an increase in fatigue resistance.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"36 3-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114034461","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}
On the example of the process of machining the statin of an electric motor, the possibility of determining the error from elastic deformations of a technological system by the finite element method is shown. To check the adequacy of the model, a comparative analysis of the calculation results with experimental data was carried out. The results showed that the amount of deviation from roundness obtained as a result of the simulation turned out to be 16% less (0.134 mm) than actually obtained during processing (0.16 mm). Simulation data confirm that the error from elastic deformations of the technological system has a maximum value. The remaining components of the error account for about 16% of the deviation.
{"title":"Determination of the error from elastic deformations of the technological system by the finite element method","authors":"A. V. Lyubimtseva, A. V. Zaitsev","doi":"10.33920/pro-2-2211-03","DOIUrl":"https://doi.org/10.33920/pro-2-2211-03","url":null,"abstract":"On the example of the process of machining the statin of an electric motor, the possibility of determining the error from elastic deformations of a technological system by the finite element method is shown. To check the adequacy of the model, a comparative analysis of the calculation results with experimental data was carried out. The results showed that the amount of deviation from roundness obtained as a result of the simulation turned out to be 16% less (0.134 mm) than actually obtained during processing (0.16 mm). Simulation data confirm that the error from elastic deformations of the technological system has a maximum value. The remaining components of the error account for about 16% of the deviation.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034261","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}
A feature of the coats of arms of the cities of Donbass is the presence of technical symbols (hammers, gears, adjustable and other wrenches, railway wheelset, pencil, anchors, copras, cowpers, etc.) and industrial landscapes that reflect the industrial specifics of the region. So it was at each of the stages of heraldic reforms and will remain a good tradition at the next stage. The coat of arms is an emblem, a distinctive sign on which objects are depicted symbolizing the owner of the coat of arms (a person, estate, clan, city, country, etc.). The creation of a coat of arms is subject to certain rules, the observance of which is mandatory. And if at the stage associated with the «Charter to Cities» approved by Catherine the Second, these rules were followed, then at the next stage in the 60-80s of the 20th century, the mass appearance of city emblems took place using a more conceptual and creative approach. You can meet the incorrect use of colors, the images are too small, which makes it difficult to read and understand the coat of arms. Such a wide appearance of coats of arms was prompted by the 100th anniversaries of the cities of Donbass, which fell at that time. The article presents three stories of the creation of the coats of arms of the cities of the Donetsk region of this particular stage. A new stage of «heraldic reform» is envisaged.
{"title":"Techno-heraldry of Donbass cities","authors":"V. Martynenko, A. Zharov, V. Sidorov","doi":"10.33920/pro-2-2211-06","DOIUrl":"https://doi.org/10.33920/pro-2-2211-06","url":null,"abstract":"A feature of the coats of arms of the cities of Donbass is the presence of technical symbols (hammers, gears, adjustable and other wrenches, railway wheelset, pencil, anchors, copras, cowpers, etc.) and industrial landscapes that reflect the industrial specifics of the region. So it was at each of the stages of heraldic reforms and will remain a good tradition at the next stage. The coat of arms is an emblem, a distinctive sign on which objects are depicted symbolizing the owner of the coat of arms (a person, estate, clan, city, country, etc.). The creation of a coat of arms is subject to certain rules, the observance of which is mandatory. And if at the stage associated with the «Charter to Cities» approved by Catherine the Second, these rules were followed, then at the next stage in the 60-80s of the 20th century, the mass appearance of city emblems took place using a more conceptual and creative approach. You can meet the incorrect use of colors, the images are too small, which makes it difficult to read and understand the coat of arms. Such a wide appearance of coats of arms was prompted by the 100th anniversaries of the cities of Donbass, which fell at that time. The article presents three stories of the creation of the coats of arms of the cities of the Donetsk region of this particular stage. A new stage of «heraldic reform» is envisaged.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121479750","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}
Import substitution, at present, has become one of the main directions of the technological development of our state. At the same time, import substitution is traditionally understood as the development of a complete or functional analogue of a particular product. The article shows two real examples of «indirect» import substitution, while the apparent cardinal difference in the objects of import substitution indicates (according to the author) that such an approach is fully justified and can be used not only in the field of industrial automation.
{"title":"Industrial automation. Non-standard examples of import substitution","authors":"S. Emelyanov","doi":"10.33920/pro-2-2211-01","DOIUrl":"https://doi.org/10.33920/pro-2-2211-01","url":null,"abstract":"Import substitution, at present, has become one of the main directions of the technological development of our state. At the same time, import substitution is traditionally understood as the development of a complete or functional analogue of a particular product. The article shows two real examples of «indirect» import substitution, while the apparent cardinal difference in the objects of import substitution indicates (according to the author) that such an approach is fully justified and can be used not only in the field of industrial automation.","PeriodicalId":415140,"journal":{"name":"Glavnyj mekhanik (Chief Mechanic)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134333467","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}
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