The International Scientific and Practical Conference on Innovations in Engineering and Technologydoi: 10.1088/1757-899X/441/1/011001pmid: N/A
International Scientific and Practical Conference on Innovations in Engineering and Technology (ISPCIET’2018)PREFACEThe conference serves as a platform for discussion of advanced and innovative technical solutions in various areas of modern science and technology. The aim of the conference is to present the innovative approaches to developing convergent solutions in engineering and technology, and also in interdisciplinary scientific researches. The conference’s objective is to analyze and appraise innovative solutions in latest scientific researches in terms of applicability, performance, and prospects for the development. Key topics of the conference cover priority research areas of technical and related sciences and take into account global trends in development.ISPCIET’2018 topics are built on the fundamentals of sustainability, with vigorous attention to all forms of engineering professions and enabling research tools including the following topics.EDITORSergey B. SapozhkovPolytechnic Institute of Novgorod State University - Federal State Budgetary Educational Institution of Higher Education “Yaroslav-the-Wise Novgorod State University” (NovSU)E-mail: iit [email protected]
Peer review statementdoi: 10.1088/1757-899X/441/1/011002pmid: N/A
All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the proceedings Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.
Adaptive neural network control of hexapod for aerospace applicationZhukov, Y A; Korotkov, E B; Moroz, A V; Zhukova, V V; Abramov, A M
doi: 10.1088/1757-899X/441/1/012001pmid: N/A
This research is a part of the work implemented by BSTU “Voenmeh” under the financial support of the Ministry of Education and Science of the Russian Federation for design and development of a precision mechanism with the parallel kinematics called “Hexapod”. Based on the Stewart platform Hexapod as a positioning system with the parallel kinematics has many advantages in comparison with the serial kinematics mechanism. In engineering applications, very precise motion of parallel manipulators to track the desired trajectory has received a great deal of attention. The inverse kinematics problem of the hexapod is described, on the basis of which the desired trajectories are formed. The simulation model of hexapod dynamics implemented in the Matlab Simulink environment is shown. In this paper provides adaptive neural networks algorithm of the hexapods control with on-line tuning synaptic weights of network. Our results show an advantage of applying of the investigated algorithm in the problem of tracking control of the space applications hexapod.
A control of hexapod based on the neural networks solution for forward kinematicsZhukov, Y A; Korotkov, E B; Moroz, A V; Zhukova, V V; Abramov, A M
doi: 10.1088/1757-899X/441/1/012002pmid: N/A
This research is a part of the work implemented by BSTU “Voenmeh” under the financial support of the Ministry of Education and Science of the Russian Federation for design and development of a precision mechanism with the parallel kinematics called “Hexapod”. In the paper the inverse kinematics problem of Hexapod is described. The solution of the forward kinematics problem is solved by the iterative Newton-Raphson method. A solution of the forward kinematics problem and approximation of the Jacobi matrix of the hexapod based on the apparatus of artificial neural networks is proposed. The results of synthesis of neural networks are presented. An algorithm for the application of neural network kinematics in the hexapode control system is described. A model of a digital control system based on the neural network algorithm under investigation is implemented. The estimation of control accuracy in the positional mode is obtained.
Hardness of products from electroerosive cobalt-chrome powders, obtained by additive technologiesAgeev, E V; Yu Altukhov, A; Ageeva, E V
doi: 10.1088/1757-899X/441/1/012004pmid: N/A
The wide use of the EED method for processing metal waste into powders for the purpose of their reuse and application in additive technologies is hampered by the lack in the scientific and technical literature of full-fledged information on the effect of the initial composition, regimes and media on the properties of powders and technologies of practical application. Therefore, in order to develop technologies for the reuse of electroerosive powders and to evaluate the effectiveness of their use, complex theoretical and experimental studies are required. The purpose of the study is to investigate the hardness of additive products from electroerosive cobalt-chrome powders. Tests on the hardness of the samples on the surface and cross-section were carried out using an automated micro-hardness analysis system DM-8 using the micro-Vickers method with an indentor load of 200 grams per ten prints with a free choice of the site of injection. Based on the results of the conducted studies, it has been experimentally established that the microhardness of additive products obtained from electroerosive powders with an average particle size of 52.5 μm is 5.7 Gpa.
Substantiation of characteristic bending points of the blade operating body of the geokhodAksenov, V V; Efremenkov, AB; Yu Sadovets, V; Pashkov, D A
doi: 10.1088/1757-899X/441/1/012005pmid: N/A
The article substantiates the characteristic bending points of blade operating body of the geokhod. The urgency of the research is considered. The information on the work peculiarities of the operating body of the geokhod is given. The method of calculation of the blade operating body of the geokhod is described, in particular, the entire force of the blocked cutting by a single radial blade of the IO of the geokhod is shown, and this force is also represented as a sum of three constituent forces. To establish the purpose and objectives of the study, it is justified to choose the force to overcome the soil resistance by the front face of the blade Pcv, which is proportional to the cross-sectional area of the slot before the front edge of the knife and which depends on the angle and strength of the soil. The limits of integration of the projection of the component of the soil resistance force into the cutting, depending on the width of the cut, on the axis of rotation of the geokhod P0.cvand on the plane perpendicular to the axis of rotation of the RIO.CV. Based on the study, the tasks for further research have been determined.
Temperature influence on the effectiveness of gas-vortex stabilization in plasma torchesAnakhov, S V; Pyckin, Yu A; Matushkin, A V
doi: 10.1088/1757-899X/441/1/012006pmid: N/A
The results of the efficiency studies of gas-vortex stabilization systems for metal-cutting plasmatrons are presented. It is noted that the method of efficiency evaluation developed by the authors should be based on the calculation of the uniformity of the gas flow velocity distribution over the section of the gas-heating path of the plasma torch. Various simplified and accurate estimation methods are proposed. The results of calculation of the velocity distribution in the control section for different modifications of plasma torches are presented. Calculations are made on the “cold” model gas flow and its heating by a plasma arc. It is shown that when heated by a plasma arc, the flow rate at the inlet to the nozzle channel of the plasma torch and the degree of irregularity of the velocity distribution in the control section increase. By methods of statistical analysis the main parameter of the effectiveness evaluation of individual gaseous-vortex stabilization was chosen – criterion of the velocity variations. Demonstrated the advantages of the new upgraded torches, including working on technology narrow jet plasma, from the point of view of the effectiveness of gas-vortex stabilization.
Innovative technologies as a means of the development of future engineers’ professional mobility abroadBalikaeva, M B; Chizhevskaya, E L; Ya Grevtseva, G; Kotlyarova, I O; Volkova, M A
doi: 10.1088/1757-899X/441/1/012007pmid: N/A
The article discusses the relevance of innovative technologies in development of the future engineers’ professional mobility. In the publication the types of innovative technologies are presented in the universities of Germany, the US, Britain, France, Norway, Poland and other countries. The principles and functions of the innovative technologies are defined in some universities abroad. The forms of innovative technologies contribute to the qualities formation at the basis of the future engineers’ professional mobility.