scholarly journals Analysis and Synthesis in the Design of Magnetic Switching Electric Machines

Actuators ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 164
Author(s):  
Nikolay Shaitor ◽  
Michal Kelemen ◽  
Boris Yakimovich
Keyword(s):  
Electrical Machines ◽  
Complex Method ◽  
Parametric Synthesis ◽  
Magnetic Switching ◽  
Optimization Parameter ◽  
Analysis And Synthesis ◽  
The Masses ◽  
Full Factorial ◽  
Range Of Variation ◽  
Significant Factors

A systematic approach to the design of electrical machines is implemented by solving problems of analysis and synthesis in various combinations at different stages and stages of design. The questions of the formulation and implementation of synthesis and analysis problems in the study and design of modular-type magnetically commutated electrical machines are considered. They are aimed at reducing weight, size and cost while improving the performance of these newly designed machines. A complex method of parametric synthesis and an automated program containing a calculated mathematical model of an electric machine has been developed. On the basis of numerical full factorial experiments, the optimization parameter is determined, and a regression analysis is performed with the construction of an optimization model. It allows you to find a narrow range of variation of significant factors, at which the optimization parameter satisfies the specified conditions. On the example of studying an inductor generator of axial-radial configuration, new approaches to the formulation and solution of typical problems of analysis and synthesis of modular-type electrical machines are shown. The use of complex parametric synthesis makes it possible to significantly reduce the masses of the designed modular machines in comparison with drum-type inductor machines of the same power.

scholarly journals Features of Parametric Synthesis of Inductor Generators of Axial-Radial Configuration

2021 ◽  
Vol 24 (4) ◽  
pp. 92-101
Author(s):  
N.M. Shaitor ◽  
A.V. Gorpinchenko
Keyword(s):  
Mathematical Model ◽  
Numerical Experiments ◽  
Magnetic System ◽  
Electric Machines ◽  
Complex Method ◽  
Data Set ◽  
Parametric Synthesis ◽  
Optimization Parameter ◽  
Significant Factors

New approaches to the formulation and solution of problems of parametric synthesis of electric machines of new designs with a concentrated electric and distributed magnetic system are shown. The methods of designing and synthesizing traditional electric machines were mainly focused on machines containing distributed electric stator windings with a concentrated magnetic system. A distinctive feature of generators of the axial-radial configuration is the concentrated electric windings with a distributed magnetic system. As a result, the development of methods for parametric synthesis of machines of new designs refers to the solution of urgent problems. As a result of the analysis of the design stages of new generators, a complex method of parametric synthesis has been developed. At the first stage, a mathematical model of the generator is used, on the basis of which an automated program for its calculation is developed. It implements synthesis based on an incomplete data set, in the direction from electromagnetic loads to the size of the machine. At the second stage, numerical experiments are performed using a mathematical model of the generator, with the determination of the optimization parameter. The calculation is performed according to the matrix of a full-factor experiment, compiled on the basis of the theory of planning experiments. As a result, the range of variation of electromagnetic loads is found, which is close to optimal. At the third stage, statistical processing of the results of numerical experiments, determination of significant factors, and regression analysis with the construction of an optimization model are carried out. The fourth stage is implemented using an optimization procedure based on the Box - Wilson gradient method. It allows you to find an even narrower zone of variation of significant factors, under which the optimization parameter satisfies the specified conditions. The use of complex parametric synthesis makes it possible to significantly reduce the mass of the designed electric machines of new designs in comparison with drum-type inductor machines of the same power. The presented procedure for the complex synthesis and optimization of generators with a concentrated electric and distributed magnetic system will be useful for researchers and designers who do not have sufficient experience in developing machines of such structures.

Improvement of Surface Roughness on ABS 400 Polymer Using Design of Experiments (DOE)

2007 ◽  
Vol 561-565 ◽  
pp. 2389-2392 ◽  
Author(s):  
Daniel Horvath ◽  
Rafiq Noorani ◽  
Mel Mendelson
Keyword(s):  
Surface Roughness ◽  
Fused Deposition Modeling ◽  
Factorial Experiment ◽  
Full Factorial Experiment ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Full Factorial ◽  
Model Temperature ◽  
Three Factor ◽  
Significant Factors

The objective of this research was to find the best combination of factor levels that minimized the surface roughness of prototyped samples from Fused Deposition Modeling (FDM). Two sets of experiments were conducted for that purpose; a two-level three-factor full factorial experiment and a three-level two-factor full factorial experiment. The parameters chosen for this research were model temperature, layer thickness and part fill style. The results obtained from both experiments were compared and analyzed in order to determine the best combination of factors that minimized the surface roughness of the specimens. The significant factors, their interactions and the optimum setting are presented in this paper

Structure of machines, mechanisms and structures

2019 ◽  
Author(s):  
Анатолий Смелягин ◽  
Anatoliy Smelyagin
Keyword(s):  
Structural Analysis ◽  
Significant Contribution ◽  
New Technology ◽  
Machine Design ◽  
Building Structures ◽  
Applied Mechanics ◽  
Parametric Synthesis ◽  
Construction Mechanics ◽  
Analysis And Synthesis

The work consists of a preface, introduction, five sections and conclusion. It sets out the tasks of structural analysis and synthesis of machines, mechanisms and building structures. A brief analysis of the work of scientists who have made a significant contribution to the creation and development of the theory of the structure of machines, mechanisms and building structures is given. The basic terminology is given, the basic concepts and definitions are given. The most common in practice machines, mechanisms and building structures are considered. The spaces in which these objects exist are investigated. Universal formulas for the determination of mobility and static definability of mechanisms and structures are obtained. A classification and structural analysis of various machines, mechanisms and building structures is given. Developed original structural mathematical models describing the structure of machines, mechanisms, building structures and structural groups. The methods of formation of machines, mechanisms, building structures and structural groups are considered, and also the structural-parametric synthesis of lever mechanisms is given. The manual is intended for students, undergraduates and graduate students who master the courses "Theories of Mechanisms and Machines", "Applied Mechanics", "Technical Mechanics", "Fundamentals of Machine Design", "Robotics", "Construction Mechanics", etc., it also It will be useful to developers and experts of new technology.

scholarly journals Systematic approach to the analysis of the operation on power technological production lines of agricultural enterprises

2020 ◽  
Vol 210 ◽  
pp. 08002
Author(s):  
Marina Bezzubceva ◽  
Vladimir Volkov ◽  
Sergei Gulin ◽  
Alexander Pirkin ◽  
Christopher Fambu
Keyword(s):  
Mathematical Models ◽  
Systematic Approach ◽  
System Analysis ◽  
Practical Importance ◽  
Theoretical Research ◽  
Production Lines ◽  
Parametric Synthesis ◽  
Agricultural Enterprises ◽  
Technological Production ◽  
Analysis And Synthesis

Considered the issues of system analysis and synthesis of energy technological production lines (ETL). An algorithm for finding optimal solutions for the design, operation and analysis of ETL is proposed. A methodology for the use of system analysis in the design, creation and operation of ETL has been formed. The algorithm is based on identifying three hierarchical levels of system analysis: principle synthesis, structural synthesis, parametric synthesis. A systematic approach to the design and analysis of ETL functioning, in the general case, is based on the use of the provisions of the theory of probability. As a result of theoretical research, probabilistic mathematical models have been obtained that describe the processes of ETL functioning and make it possible to formulate recommendations for increasing the efficiency of these processes. The basic theoretical provisions and mathematical models formulated in the article are of great practical importance and allow to design and further competently operate production lines for various purposes.

scholarly journals Innovative technology for insulating the borehole absorbing horizons with thermoplastic materials

2019 ◽  
Vol 123 ◽  
pp. 01033
Author(s):  
Andrii Sudakov ◽  
Ihor Chudyk ◽  
Diana Sudakova ◽  
Liudmyla Dziubyk
Keyword(s):  
Polyethylene Terephthalate ◽  
Experimental Studies ◽  
Household Waste ◽  
Innovative Technology ◽  
Complex Method ◽  
Thermoplastic Material ◽  
Technology Application ◽  
Analysis And Synthesis ◽  
Thermal Sources ◽  
First Time

The purpose of the work is to increase the insulation work efficiency by using thermoplastic mixes based on polyethylene terephthalate. The tasks set were solved by a complex method of research, including the analysis and synthesis of the literary and patent sources, as well as conducting the analytical and experimental studies. The experimental data were processed on a PC using the methods of mathematical statistics. A method for insulating the absorbing horizons with thermoplastic materials has been developed and substantiated. To implement it, the following technological operations should be performed: supply of the thermoplastic materials to the borehole bottom, melting and squeezing of thermoplastic materials into absorption channels. For various geological and technical conditions of drilling, technological schemes of insulating the absorbing horizons with thermoplastic materials are proposed. The use of the household waste based on polyethylene terephthalate has been proposed as the plugging material to insulate the absorbing horizons of boreholes. For the first time, the possibility of using the household waste based on polyethylene terephthalate as the plugging thermoplastic material has been substantiated and proved. For the first time, a method for determining the efficient range of technology application for absorbing and unstable horizons insulation with thermoplastic materials through the use of bottom hole thermal sources has been substantiated analytically.

A Design-of-Experiments Approach to Study Thermal Property Effects on Melt Pool Geometry in Powder-Based EBAM

2013 ◽  
Author(s):  
Bo Cheng ◽  
Kevin Chou
Keyword(s):  
Thermal Properties ◽  
Design Of Experiments ◽  
Thermal Property ◽  
Thermal Response ◽  
Full Density ◽  
Melt Pool ◽  
Metallic Parts ◽  
Thermal Simulations ◽  
Full Factorial ◽  
Significant Factors

Powder-based electron beam additive manufacturing (EBAM) is capable of making full-density metallic parts and has been increasingly utilized to produce complex-shaped, custom-designed Ti-6Al-4V alloy parts. EBAM also has the potential using other various powders materials such as intermetallics. Different materials will have different thermal properties that will result in distinct thermal responses during the EBAM process and thus, selecting adequate process parameters can be challenging. Because virtually all thermal properties would change when a different material was selected, testing individual thermal property is insufficient to understand the anticipated thermal response when a different powder material is to be used. In this study, EBAM process thermal simulations were extended to study the effect of thermal properties in EBAM in a more systematic way using the design of experiments approach. Four factors, two levels, and full factorial experiments were conducted. Three simulation response of melt pool geometry was evaluated using analysis of variance (ANOVA). It is concluded that the thermal conductivity and the melting temperature are the two most significant factors.

scholarly journals Analysis and synthesis of optimal supply systems for gas-chemical complexes

2017 ◽  
Vol 89 (10) ◽  
pp. 1567-1577 ◽  
Author(s):  
Igor V. Dolotovskij ◽  
Evgeniy A. Larin ◽  
Nadezhda V. Dolotovskaya
Keyword(s):  
Power Supply ◽  
Waste Utilization ◽  
Industrial Processes ◽  
Water Supply Systems ◽  
Parametric Synthesis ◽  
Power Generator ◽  
Analysis And Synthesis ◽  
Industrial Waste Utilization ◽  
Operation Cycle ◽  
Supply Systems

AbstractThe study provides the results of structural and parametric synthesis of multifunctional power and water supply systems for gas chemical complexes and raw hydrocarbon preparation and processing facilities. These systems include their own power generator units combined with combustible and industrial waste utilization units. Methods, algorithms and system of efficiency parameters developed by us allow one to carry out scientific studies and develop new prospective power supply systems integrated with industrial processes and effective at various stages of the enterprise operation cycle.

scholarly journals Morphometric parameters of the intestine and aggregated lymphatic nodules of meat rabbits

2017 ◽  
Vol 8 (4) ◽  
pp. 649-655 ◽  
Author(s):  
M. M. Gavrylin ◽  
M. O. Nikitina
Keyword(s):  
Growth Rate ◽  
Immune Status ◽  
The Body ◽  
Age Group ◽  
Food Ration ◽  
Effective Prevention ◽  
High Productivity ◽  
The Masses ◽  
Lymphoid Nodules ◽  
Range Of Variation

Nowadays, new breeds of rabbits are appearing with high productivity and rapid growth rate. These breeds require fresh research to be conducted in different fields, which include morphology of the intestine and gut-associated lymphoid tissue (GALT). The morphology of the intestine and GALT of meat rabbits are the investigated objects of the current research. We conducted the investigation on rabbits of different ages (1, 10, 20, 30, 60 and 90 days old). Each age group consisted of five animals. All veterinary ethical requirements were complied with. The body lengths and body masses were measured. Using t-coefficients, we estimated the range of variation of these parameters in each age group. The conclusion about this variation was taken. The masses and lengths of the different intestine parts were investigated as well. Using the obtained values, we provided a continuous numerical model to compute the mass and length of any intestine part of a rabbit of any age in the range from one to 90 days. This allowed us to represent the obtained empirical model by a plot for subsequent detailed study. We found that the changes in masses and lengths do not follow the same pattern for all intestine parts. For some intestine parts, this pattern is approximately linear in the range from one to 90 days; meanwhile for others, the changes in masses and lengths are quite complicated. We observed two local maximas of the growth rate for some intestine parts. Apart from the masses and lengths of the intestine parts, we accomplished macro analysis of the aggregated lymphoid nodules of each age group of animals. We estimated the index of gross area and the law by which it changes in each group. The research results presented here may be used as a basis for composing food ration, assessment of immune status and development of effective prevention and treatment against some diseases. 

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