scholarly journals Training of specialists and development of design regulatory framework for Russian magnetic levitation transport systems

2018 ◽  
Vol 4 (1) ◽  
pp. 138-154 ◽  
Author(s):  
Vladimir V. Shmatchenko ◽  
Pavel A. Plekhanov ◽  
Dmitry N. Roenkov ◽  
Victor G. Ivanov
Keyword(s):  
Permanent Magnets ◽  
Quality Management System ◽  
Magnetic Levitation ◽  
Linear Motor ◽  
Regulatory Framework ◽  
Transport Systems ◽  
Optimal Technology ◽  
The Cost ◽  
Wheel Track ◽  
Training Specialists

The article deals with the issues of training of specialists and development of design regulatory framework for Russia’s magnetic levitation transport systems. Introduction: The development of maglev technologies in Russia requires solving the task of training specialists and developing the design regulatory framework for the magnetic levitation transport systems (MLTS). The MLTS related specific issues, namely traction, levitation, lateral stabilisation, power supply systems as well as overall safety, should receive special attention. Analysis: The maglev transport technology is a further development of a conventional “wheel-track” technology, employing the linear motor and the magnetic levitation system (electromagnetic, electrodynamic, the permanent magnets-based system, and combined types). Each type of MLTS possesses its advantages and limitations, which points at the necessity to justify the choice of an optimal technology. A crucial issue is to choose (develop) a linear motor for MLTS on the basis of the four related aspects: electromagnetic, thermal, mechanical, and the cost related one. Another significant issue is the overall safety provision of MLTS. The elaboration of the quality management system should be carried out in accordance with all stages of the life cycle of the wheel-track transport, which is specified in EN 50126, EN 50128, and EN 50129. Methodology: The methodological base of training specialists and developing the design regulatory framework should become a systematic approach. The necessity of the application of this approach lies in the variety and complexity of physical processes of MLTS. The development of the project and working documentation of the design and construction of MLTS in the territory of Russia should be carried out in accordance with the active Russian legislation, which specifies the application of Special Technical Regulations for new technical systems. Conclusion: As of today, it is reasonable to develop the training of specialists for MLTS on the basis of the qualification upgrade and professional retraining programmes of the engineering staff, who already possess the fundamental railway education. All the necessary expertise and competences are available at Emperor Alexander I St. Petersburg State Transport University. For many years, the university’s specialists have been working on the development of the maglev technologies in Russia both on the basis of their own researches and on the study and generalisation of the national and international experience. They have also been developing the projects of the design regulatory framework for future MLTS.

scholarly journals Comparative analysis of variants of magnetic pole collection based on the halbach massif

2017 ◽  
Vol 3 (1) ◽  
pp. 47-57
Author(s):  
S A Kaznacheev ◽  
T S Zimenkova ◽  
A S Krasnov
Keyword(s):  
Comparative Analysis ◽  
High Speed ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Experimental Studies ◽  
Volume Growth ◽  
Practical Significance ◽  
Transport Systems ◽  
Cost Of Energy ◽  
Magnetic Poles

Today, one of the most urgent tasks of modern transport systems in terms of volume growth and quality improvement, freight and passenger transportation worldwide, is to increase the speed of transportation and reduce the cost of energy resources associated with these transportations. These tasks can be solved by introducing high-speed, in particular magnetic-lev- el transport systems. In this paper, we describe and compare the variants of assemblies of magnetic poles based on the Halbach massif. The relevance of the studies carried out is confirmed by the world experience in the use of permanent magnets in the field of magneto-levitation technologies in various branches of science and technology. The purpose of the research and comparative analysis of variants of assemblies of magnetic poles based on the Halbach massif is to obtain data on the possibility of using such assembly variants in levitation systems of magnetic-leav- ing transport [7], as well as visual proof that mathematical modeling does not allow to fully describe emerging phenomena In this article, we use empirical methods of investigation. The results obtained will find their application in the design of the design, which will reduce both the mass-dimensions and the energy consumption of the levitation system. The practical significance of the studies obtained lies in the possibility of applying the principles considered practically in any magnetic-levitation transport systems. Conclusion: Based on the experimental studies, data were obtained on the levitation forces and the braking forces, which make it possible to draw conclusions about the advisability of using these assembly variants.

scholarly journals Optimization of actuating elements of transport control systems with magnetic levitation based on the solution of inverse problems

2018 ◽  
Vol 226 ◽  
pp. 04006 ◽  
Author(s):  
Anna Balaban ◽  
Yuri Bakhvalov ◽  
Valery Grechikhin
Keyword(s):  
Control Systems ◽  
Magnetic Induction ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Optimization Method ◽  
Objective Functions ◽  
Magnetomotive Force ◽  
Complex Criterion ◽  
Transport Control ◽  
The Cost

The designing of optimal energy-saving actuating elements for transport control systems with magnetic levitation (electromagnets with current windings and permanent magnets) is reduced to solving the following inverse problem. It is necessary to determine the dimensions and magnetomotive force of the actuating element, providing a given levitation force, magnetic induction in ferromagnets and a minimum mass of the actuating element. The solution of the direct problem (determination of the force of levitation and magnetic induction) is carried out by the finite element method. In the problem, the objective function is the mass of the actuating element and the restrictions are superimposed on the force and magnetic induction. Solving this optimization problem by the Lagrange method leads to inefficient algorithm. The article describes the proposed optimization method based on the transformation of constraints into objective functions, that is, the reduction of the problem to the multicriteria problem with consistent minimization of objective functions with a limited number of required parameters. A number of criteria are minimized analytically. The application of the complex criterion is considered. To reduce the time of solving the problem, the hierarchy of models is used: chain and field model. The proposed optimization method allows reducing the time of solving the problem by about two times. The cost of electricity due to the use of permanent magnets is reduced by four times. An example of optimization of the design of the actuating element of transport control system with magnetic levitation is considered.

Characterization and Optimization of Berdut Technology for a Magnetically Levitated Train

2005 ◽  
Author(s):  
Ezequiel Medici ◽  
David Serrano ◽  
Jeffrey Robles
Keyword(s):  
High Speed ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Linear Motor ◽  
High Speed Train ◽  
Damping Characteristics ◽  
Levitation System ◽  
Magnetic Levitation System ◽  
Working Principle ◽  
Stiffness And Damping

Berdut Technology is a novel magnetic levitation system suitable for high speed train applications. This technology combines magnets and electromagnets to obtain levitation and propulsion. A Berdut array of permanent magnets is used to provide the levitation via skates that are located on both sides of the vehicle. Both the rails and the skates are based on permanent magnets therefore no energy is required for levitation. A linear motor located along the center of the vehicle provides the propulsion. Both, skate and linear motor use the same concept and working principle. The paper is divided into two parts: the first part describes the skate levitation, while the second part describes the linear motor. Finite element method was chosen to model and simulate both the skate levitation and the linear motor. Energy dissipation resulting from hysteresis and eddy current losses in the skate was determined. Stiffness and damping characteristics for the levitation skates are presented and validated. The efficiency and thrust force for the linear motor model are also presented along with experiments performed to validate the simulations. Once, validated the models are used to design a Maglev suspension and a linear motor for high-speed train applications.

scholarly journals Conceptual basis for assessment of effects of magnetic levitation-based high-speed transport systems projects development

2019 ◽  
Vol 5 (1) ◽  
pp. 89-102 ◽  
Author(s):  
Natalya A. Zhuravleva
Keyword(s):  
High Speed ◽  
Magnetic Levitation ◽  
Economic Assessment ◽  
Point Of View ◽  
Assessment Process ◽  
Transport Systems ◽  
Consequence Relation ◽  
Economic Paradigm ◽  
Cost Of Time ◽  
The Cost

New economy forms a new value of transport service, in which the cost of time is becoming the most important factor in substantiation of investment decisions. Aim: the aim of the work is to form the methodological basis and procedures of economic substantiation of magnetic levitation based transport. Methods: the research builds on economic laws (keeping integration and high revenues) describing a new economic paradigm, methods of analysis of reason-and-consequence relation between speed and maximum revenue. The conclusions are based on representative summary of data about investment, operational and organisational costs of existing and designed high-speed lines. Results: design of a two-dimensional matrix of combination of maglev technologies with modular intermodal configuration, which enables building a scheme of economic assessment using rules of modular and architectural innovations’ combination. Consequently, the assessment process for transportation pricing from the point of view of maximum revenues for manufacturers and due mobility for population.

THE IMPORTANCE OF TAXATION SUPERVISION IN THE OPERATION OF ENTERPRISES

2021 ◽  
Vol 4 (4) ◽  
pp. 89-95
Author(s):  
YAN MIN TSZE ◽  
Keyword(s):  
Economic Analysis ◽  
Cash Flow ◽  
Financial Management ◽  
Management System ◽  
Regulatory Framework ◽  
Inventory Analysis ◽  
Arithmetic Operations ◽  
Financial Management System ◽  
The Cost

This article of the topic is due to the fact that accounting for the cost and financial management system of the enterprise is currently of particular importance and is carried out in a strict manner. When conducting accounting, the following procedures are used: search for compliance of the company's data on accounting and the regulatory framework; study of documentation; finding and forming errors during the audit. Such meth-ods are solved by the rules: evaluation of arithmetic operations; monitoring of inventory; analysis of cash flow in the enterprise; notification of certain persons about the completed economic and accounting operations; interviewing employees orally; assessment of cash flow according to documents; implementation of economic analysis aimed at studying the movement of funds of the enterprise.

CURRENT RATIONALE ISSUES LABOR COSTS IN THE COST OF MILITARY PRODUCTS AT DIFFERENT STAGES OF THE LIFE CYCLE

2021 ◽  
Vol 3 (5) ◽  
pp. 52-61
Author(s):  
D. V. ZVEREV ◽  
◽  
I. I. SAVELEV ◽  
Keyword(s):  
Life Cycle ◽  
The State ◽  
Regulatory Framework ◽  
Labor Intensity ◽  
Labor Costs ◽  
Special Equipment ◽  
Frame Work ◽  
The Cost

Based on the experience of checking the validity of prices for military products supplied within the frame-work of the state defence order, problematic issues of rationing of labor costs have been identified. The im-perfection of the current regulatory framework in the field of substantiating the labor intensity of work is shown. Proposals for the standardization of labor at various stages of the life cycle of weapons, military and special equipment are reasoned.

LICENSING BY OUTSIDE INNOVATOR IN HOTELLING MODEL REVISITED

2021 ◽  
pp. 2150041
Author(s):  
YUANZHU LU ◽  
FULAN WU
Keyword(s):  
Technology Licensing ◽  
Economic Modelling ◽  
Hotelling Model ◽  
Royalty Rates ◽  
Optimal Technology ◽  
The Cost ◽  
Cost Differentials ◽  
Fixed Fee

This paper extends Banerjee and Poddar [Banerjee, S and S Poddar (2019). ‘To sell or not to sell’: Licensing versus selling by an outside innovator. Economic Modelling, 76, 293–304] by lifting the cap on per unit royalty rates in the cases of royalty licensing and two-part tariff licensing. We reconsider the optimal technology licensing contract by an outside innovator facing two heterogeneous licensees in a standard Hotelling framework. Our findings show that the optimal licensing policy could be fixed fee to the efficient firm, or two-part tariff to both firms (pure royalty to both firms), or two-part tariff to the efficient firm, depending upon the cost differentials between the firms and the size of innovation.

scholarly journals The Concept of Development and Implementation of High-Speed Transport

2020 ◽  
Vol 18 (1) ◽  
pp. 58-72
Author(s):  
V. M. Alexeev ◽  
A. V. Vaganov ◽  
M. V. Katina
Keyword(s):  
High Speed ◽  
Magnetic Levitation ◽  
Transport Systems ◽  
Rolling Stock ◽  
Design Elements ◽  
Safety Issues ◽  
Current Collection ◽  
High Speeds ◽  
Technical Solutions ◽  
Original Approach

The article discusses the issues of implementation and organization of high-speed transport. The objective of the article is to consider possible options for implementing highspeed (HS) motion systems using the principle of magnetic levitation, which will ensure high speeds for delivery of goods and carrying people over long distances. To achieve this objective, it is necessary to develop an engine and technical solutions for design of HS rolling stock, make decisions on energy supply infrastructure and the HS track, address safety issues and new control systems considering the state of the infrastructure and its design elements. The article discusses several options for implementation of high-speed transport systems, differing in the power supply system, current collection and track based on the magnetic levitation approach. An original approach is proposed in implementation of magnetic levitation transport using the technology of electromagnetic guns designed to implement traction forces of a magnetic levitation vehicle. The advantage of this approach is that it opens the possibility of maneuvering for the vehicle while driving. This allows to abandon switch turnouts, now significantly limiting the use of magnetic levitation transport. A mathematical model describing interaction of an electromagnetic gun and supermagnets located on the track is considered. In constructing the model, methods of the theory of electromagnetic field and interaction of magnetic bodies were used, and when constructing a model of interaction of rolling stock with a magnetic track, methods of mathematical algebra and the Cauchy theorem were used. The article discusses various principles of organization of movement using the magnetic levitation for urban, suburban, and intercity transport.

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