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  • Finite element analysis of the applicability of the applied theories of calculation of piezoelectric device of energy storage of stack configuration

    This paper considers basic element of device of energy storage which is a piezoelectric generator (PEG) of cylindrical form with the attached inertial mass. A finite element modeling of the device operation is carried out during active load in the external circuit. The main purpose of the operation is to compare the output potential and frequency characteristics of the device known in the literature models of systems with concentrated parameters. On the basis of these models, we can receive the analytical dependence of parameters of PEG with its geometric characteristics and mechanical properties of the used materials. However, the question of the range of applicability of these formulas is still open. In this paper, based on the numerical analysis of finite element models of PEG in package ANSYS, we obtained comparison with the analytical formulas that show the values of some parameters of simplified models and set the boundaries of their applicability.

    Keywords: energy storage, PEG, piezoceramics, effective mass, resonant frequency, FEM

  • Way of coding of the information at the task of the geometrical Models of executive mechanisms of robots

    The method of coding of the geometrical information is offered at the task of executive mechanisms on the basis of use of the set set of spatial primitive things and their orientation in mobile systems of co-ordinates. The method of a designation of geometrical models of mechanisms of robots is offered. One of advantages of the developed method of representation of geometrical models of kinematic chains, possibility of more exact task of a spatial configuration of manipulators by means of use of a considerable quantity of central points and various position of volume primitive things concerning a constructive plane is.

    Keywords: Mechanisms of manipulators, geometrical models, virtual modelling of movements of robots

  • Program realization of calculation unit jet system measuring the temperature of the gas flow

    In the article describes the program realization of calculation unit pneumatic measuring system. The program is implemented in the languages ​​of IEC: CFC and ST. Algorithm written with the possibility of future use in systems that differ from described in the article. The developed algorithm allows to measure temperature directly using computing power PLC and get the result in the final form, without any changes on the part of the operator.

    Keywords: pneumatics, temperature, airflow, algorithm of temperature measuring, temperature measurement, Codesys, CFC, ST

  • Simulation and method of classification of technical condition of the high-voltage mekhatronics modules

    Simulation and method of classification of technical condition high-voltage the mekhatronics of modules of the movement, allowing by results of control of electrodigit activity and skrednekvadratichesky value of vibrospeed are presented, to refer current state of object to one of classes of diagnoses

    Keywords: High-voltage mekhatronics module, fuzzy-model of classification of technical condition, electrodigital activity, vibrospeed

  • Preparation and use of alternative fuels from municipal solid waste for the cement industry

    The article is considered the ecological and economic rationale for the use and application of alternative fuels from MSW (RDF) to produce cement. The economic efficiency of RDF at JSC "Sebryakovcement" at the current rate of natural and secondary energy. The aim of our work is to develop effective thermal and hardware solutions optimized commercial and environmental solutions for the development of the use of solid waste in the cement industry.

    Keywords: alternative fuels, municipal solid waste (MSW), RDF, cement industry, environmental safety.

  • Calculation of the economic effect of the use of RDF as an alternative fuel for the cement industry

    The article is described the environmental and economic feasibility of the use of fossil fuels on RDF. The opportunity of introduction of alternative fuels, as an essential part of maintaining a balance of market equilibrium in the competitiveness of the products of the company "Sebryakovcement". The calculation of potential possibilities of processing of waste RDF as a necessary component to maintain the balance of market equilibrium and competitiveness of enterprise "Sebryakovcement." Calculation of the potential waste in RDF

    Keywords: alternative fuels, municipal solid waste (MSW), RDF, cement industry, environmental safety.

  • Numerical modeling and analyze of discontinuous signals spectrumenterprise

    The research of influence of periodical signal discontinuity on spectrum form is considered in the article. The numerical modeling of the system of discontinuous signals is performed. The spectrum of the system built from time discreet sampling is analyzed. The plots of the sample correlation coefficient between spectrums of continuous and discontinues signals are shown in the article. The research is needed for the development of digital measuring system for quartz plates frequency detecting.

    Keywords: amplitude signal spectrum, discontinuous signal, quartz plates

  • Determination of the atomic structure of bimetallic Pt-Ag nanoparticles in metal-carbon catalysts by X-ray absorption spectroscopy data

    The atomic structure of bimetallic nanoparticles of Pt-Ag composition, which are the part of metal-carbon electro-catalysts PtAg/C, is studied by means of EXAFS spectroscopy using the suggested technique. These materials have been prepared by methods of consistent and simultaneous deposition of Ag and Pt atoms from aqueous ethylene glycol solutions of their salts with subsequent acid treatment. The values ​​of the structural parameters of the near environment of platinum atoms are determined. The nature of the distribution of components in nanoparticles is established. Cluster models of nanoparticles are constructed. The fraction of Pt atoms in the working shell and its dependance on preparation methods in each case are determined.

    Keywords: Metal-carbon electrocatalysts, bimetallic nanoparticles, Catalysis, Platinum, X-ray absorption spectroscopy, atomic structure

  • Technological methods of ensuring the fatigue strength of elastic elements

    As a rule, the information they have guides for fatigue testing geometrical designs, gives only the evaluation of the characteristics and design lay stock in several, and sometimes in tens times exceeds the tensile strength of the material. And saving of material, from the point of view of obsolescence, product should be developed on a certain resource. For details, which operate in the field of elastic deformations and calculated in operation for a given mode of operation should lay in the design of the guaranteed resource. To do this, for example, compensating coupling method is suggested, which is based on the calculation methods of CAD/CAM/CAE/CSE NX 7.5 and field tests considering the impact of technology of surface hardening. The character of strain in «elastic element» in NX 7.5. The calculations of the elastic element module «flexible body» NX 7.5, but due to the fact that the calculation is impossible to consider technological parameters of manufac-turing is conducted equivalent full-scale tests. Accordingly, designed and built a stand for equiva-lent tests. Finally, for comparison, is a computer simulation to calculate large displacements and complicated movements of the coupling. For this we used the application NX 7.5 «Simulation of kinematic mechanisms» with the attraction tools «Flexible body».

    Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

  • Methodology to evaluate the production of electric power systems

    To date, questions the reliability and continuity of electrical energy production facilities are among the most urgent , due to the transition generation companies into private hands and aggravate financial, economic and industrial- technological challenges : depreciation and obsolescence of equipment, lack of investment and other factors, influencing the power producers .
    The article discusses the various valuation techniques of industrial enterprises and industrial complexes electricity . On the basis of their proposed universal method of estimating production complexes electricity , which is divided into 6 groups and includes weights . The article noted that the proposed method of estimating the weight of electric power systems operation has several advantages compared with the methods of other authors.

    Keywords: electricity, electricity production complexes, investment, reliability, development

  • The methodological bases fuzzy cognitive modelling of hierarchical problem-directed systems

    This article is devoted to description of structure of methodology of modelling of hierarchical problem-directed systems on the example of social and economic systems. In the basis of methodology the principle of a combination of the formalized methods of modelling and expert procedures is put. Modelling of hierarchical system is offered to be spent by means of multilayered fuzzy cognitive maps. Filling of the block of logical-mathematical models in structure of process of decision-making is described in detail. The offered methodology provides the development and choice of well-founded administrative decisions.

    Keywords: Problem-directed system, decision making, fuzzy cognitive model, methodology

  • The definition of crisp dominating tactics for development of alternative control decisions in the conditions of total uncertainty

    The article is devoted to modelling of process of decision-making in difficult systems in the conditions of total uncertainty. The problem is formulated on the basis of synthesis of concepts of the control theory and decision-making, the theory of fuzzy sets and the fuzzy logic, the theory of hierarchical multilevel systems, the utility theory and the theory of games. The given concept expands possibilities of the account uncertainty the various nature, typical to mathematical description of the surrounding validity. Problems of search of decisions in an fuzzy hierarchical control system are designated. The way of the description and finding of alternative decisions in multilevel difficult systems is offered in given article. The algorithm is based on information processing in the form of fuzzy intervals taking into account two kinds the politician conservative and aggressive on the basis of criteria «maxmin» and «minmax». The method of projection on individual interval is used for comparison of the fuzzy intervals presented on various dimension scales. The example showing work of algorithm of a choice of two groups of alternatives is resulted: optimistic and pessimistic on a level of hierarchies of the purposes in the conditions of total uncertainty.

    Keywords: Difficult system; decision making, fuzzy interval, the control decision; total uncertainty

  • Rural fire insurance on Don (second half of XIX - early XX centuries)

    History rural fire insurance on the Don, analysis of insurance institutions Don Army (1870-1876), 
    regional rural council (1876-1882), the Regional Management Committee for Zemstvo Affairs (1882-1919). 
    The specificity of the insurance for the сossack population: collecting insurance payments stanichno and county boards, 
    the choice of the сossacks rated insurance, etc. 
    There was a preponderance of mutual insurance, analyzed the accumulation of insurance capital  

    Keywords: insurance, organization of insurance, business, Zemstvo insurance, mutual insurance, insured event, insurance valuation, insurance discounts

  • Technical and economical justification of the physic and mechanical compressed air drying method

    In the article the questions of technical and economical justification of the physical and mechanical compressed aitr drying are looked over. The detailed calculation  for price index and economic profit for wagon exploitation depot are given.

    Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

  • Spraying of nonisocyanate insulation foams

    This article describes a method for producing two-component nonisocyanate insulating foams and technology of its spraying on the insulated surface. It describes the device, which, along with standard equipment, includes principally new design of components pre-mixing chamber. Constructive solutions described in the article will allow using the compositions which have different time and temperature of curing than conventional PU foams.

    Keywords: Keywords: spray foams, insulating foams, nonisocyanate urethanes, pre-mixing chamber.