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A mathematical model describing the dynamics of mechanical oscillatory systems «rolling stock train -railway track» in the vertical longitudinal plane of symmetry. Is equivalent to converting the design scheme. Linearization of nonlinear characteristics in ways. A model of the «generalized» track to assess the existing shock pulses from the joints of rails.

The article describes a mathematical model of electro-mechanical devices wear contact pairs current collection of electric transport in conditions as close to real operating conditions. Synthesis of models made in two directions: model the mechanical load and model of electric current flow in sliding contact. The mathematical model also allows to take into account the thermal processes oc-curring in sliding contact by passing an electric current through a sliding contact. Are compared the results of calculations and experimental studies of wear of contact pairs of different materials. Experimental studies were performed on a dedicated test bench installation created in Omsk State Transport University. Relative error between calculation and experiment is not more than 6 %.

This article contains results of a preliminary study of the parameters of the laser triangulation sensor in the context of its application to control of a technical condition of details of the car. The main aim of the study is the experimental determination of the limits of applicability of the sensor to monitor the real sample detail of the new design freight car on the example of 18-9855 bogie parts. By the experimental methods where established the threshold limits of applicability of the given sensor, its properties and application features for dimensional control. Also where established limit angles of the distance measurement at the maximum setting of the speed sensor, the actual focal point of the transducer. The analysis of the obtained data allowed authors to make an optimal scheme of automated measurement machine of portal type for control of the size and shape of parts of the car. The results of the work is possible to use when designing automated systems and equipment for dimensional inspection of parts during manufacture, repair and maintenance of railroad cars and other vehicles.

The article describes the priorities in the sphere tokosеma to improve traffic safety, the development of high-speed and high-speed traffic. To ensure the normal functioning of traffic and rail transport need uninterrupted transmission of electricity. Diagnosis of elements of contact network is one of the important task to prevent power system faults, including those that could lead to an emergency situation. The article deals with the built-in diagnostic system, how they work, an embodiment of their application.

As a result of work statistical data bank of hardware and software complex «Bort» was researched. Methodology for TEM2 locomotive deiesel-generator plant parameters indicating while running hours transformation in integrated time space is suggested.

The mathematical model of traction drive Electric locomotive EP20 for research of dynamic processes in a mode of boxing is constructed. The natural frequencies and coefficients of the forms of the dynamic system are determined. The stability of the drive in relation to frictional self-oscillations is estimated. Dynamic loads in the drive elements at a single angular speed of wheel slip are calculated. The recommendations on increasing the dynamic qualities of the traction drive in the sliding mode are formulated.

Method of installation places and power choice of reactive power compensation devises in traction power supply system in condition of increase freight miles are introduced in this article. Approaches to definition of reactive power optimal criteria with reactive power compensation installation are denoted. Three criteria for estimation of reactive power compensation installation are offer to review. There is provided method of optimality assessment of this choice.

The aim of the work, the results of which are presented in this article, is to a study of the impact of physical and mechanical properties of rail steel on the parameters of the spectrum emission. The experimental results were obtained by method of atomic emission spectroscopy (AES) in argon. Performed quantitative analysis material of the rail steel and built a multi-dimensional graduations of the description of the spectral lines correlate with changes in the hardness of steel. The results can be used to extend the capabilities of devices atomic-emission spectral analysis

The article deals with the suitability of wave response method aptitude for traction engines turn-to-turn armature coil insulation testing and development of testing coil adequate model for further researching of physical processes occurring while testing. The method of wave response readout in armature coil reported is described in the article. The equivalent circuit of armature coil relating to wave response method is given. The wave responses got during physical model testing, simulating in MATLAB are shown. The real and simulating results analysis allows you to approve the proposed equivalent circuit adequacy. This equivalent circuit may be used for simulating of traction engines insulation fails relating to wave response method.

The results of the study the possibility of using artificial neural networks in identification problems failure status diesel D49, the results of spectral analysis of the crankcase oil. The obtained results are needed to develop software for evaluation of the degree of wear and tear as a result of the diesel locomotive spectral analysis of engine oil.

Flow ranges are given in article by an air stream of the aerodynamic device of a current collector the AIST, received by calculation, using which aerodynamic characteristics of this device are defined. Experimental aerodynamic characteristics of a current collector the AIST of heavy and easy type with use of the aerodynamic device are provided.

The article discusses the approach to operational evaluation of technical condition of the diesel locomotive power plant functional subsystems as a part of an integrated microprocessor control systems. Presents an approach to operational evaluation of technical condition of a fuel system. By results of the analysis of a fuel system graph model set of control parameters is selected, the algorithm allowing to establish the reasons of controlled parameters output of admissible limits is developed.

Principal directions for increase of locomotive operating efficiency are determined in the article based on statistical estimates as per data on the main domestic locomotive series. Work ratio is suggested as universal indicator. It is demonstrated that in addition to locomotives' reliability enhancement, increase of the trains' haulage management system efficiency is also a large reserve. It is proven that the number of locomotive units can be reduced at least by 2,000 thous. units.

Rational way to improve the operational efficiency of the locomotive is adjustable power.The implementation of this method possible with the use of automatic power regulation implementing the optimal load,the operation mode of the traction and energy unit (TEU) of the locomotive. The aim of this work is to obtain mathematical relationships,establishing the optimal ratio between the number of employees of TD given thrust and speed. Determination of the optimal ratio being in the traction motors is based on finding the minimum power losses at the nodes of the TEU. Search the minimum of complex functions is an optimization problem,which from a mathematical point of view is to determine the minimum of function of several variables with a number of constraints,and relationships. To solve the problem of finding the minimum of a complex function,we used the method of indeterminate Lagrange multipliers. The optimization process is considered at a constant value of the voltage supplied to the TD and sold power.Variables - the force of traction,speed of movement,the ratio of incremental losses,the resistance of the circuit of the armature of TD was assumed constant,which allowed to simplify the solution of the problem,reducing it to find three unknown quantities - current,the number of TD and magnetic flux. The solution to this system of equations for the number TD,participating in the work were obtained analytical dependences the optimum values of the TD depending on the speed,the thrust force on the rim of the driving wheels of the locomotive and tension. Analytical expressions for determining optimal parameters of power regulation of electric DC,allow to obtain the optimal values of the number of workers so and the load depending on the given values of thrust and speed in the entire range of load modes of EPS. The analytical expressions can be used when drawing up regime maps and energy performance certificates EPS,and also in the most important automatic devices of power control of the rolling stock to set the optimal ratio of number of employees and so on.

The article describes the main provisions of the optimized system of the electric locomotives maintenance service and repair, as well as the results of the experiment to increase between-repairs run of the electric locomotives in the Eastern polygon. The author examines the impact of techno-logical preparation of production on the quality of repair and the number of failures in the transi-tion to a more streamlined system. The article proposes a method of calculation of adjustment and development cost of technological documentation, which is an integral part of technological prepa-ration of production. The cost calculation includes qualifications and salaries of industrial engi-neers, the complexity and volume of developed or adjusted technological documentation. The author gives the example of calculation of adjustment and development cost of technological docu-mentation in depot conditions. The economic effect from the implementation of this methodology and optimized system repair shows its effectiveness and viability. Due to the adjustments of techno-logical processes of the electric locomotives repair, the number of failures during operation, dis-covered during the experiment in the Eastern polygon, will decrease. Benefit from the increased between-repairs run and reducing the complexity of some of the repairs will cover the costs of im-plementation of the optimized system.

In this paper the authors propose to consider the peculiarities of making mathematical models of rolling stock and its dynamic behavior when driving on irregular resilience railway line in the longitudinal direction. We present a qualitative and empirical analyzes of longitudinal resilience railway railway. In conclusion, given the conclusion, on the basis of its proposed further consideration of mathematical aspects of the above solutions of systems of differential equations of motion of the rolling stock on irregular resilience way.

This article is devote to the development of software for analyzing and transforming data from studies of the collector surface traction motors using a device of control profile commutator PKP-4M. The use of this computer application during the processing of the experimental data will improve the reliability of the control profile of the commutator, and to calculate the main diagnostic parameters characterizing the effect of the profile on the commutation process.

Explores the impact of truly existing longitudinal non-elastic railway track caused by the presence of sleepers and other factors on the vertical dynamic of vehicle. Formulas to determine the bounds of simple combinational and parametric resonances is obtained. Areas of dynamic instability of electric locomotive EP2K is builted.

Electricity consumption for traction depends on a number of operational parameters, including the use of power of electric rolling stock. On Russian Railways there are flat areas of great extent, which operated the locomotives inefficient use of power and work modes with low energy performance. The aim of this work is to examine ways to improve the energy efficiency of passenger locomotives, such as the operation of electric rolling stock with rational values of power and number of axes for the modern passenger transport on the flat sections of the road long-haul and assess their energy performance. To achieve this goal was determined by the rational value of the power required for driving trains on this stretch of track with maximum speeds of 160 km/h, the calculations of the asynchronous traction motors obtained traction and power characteristics of electric locomotives with asynchronous traction drive, and a proposed comparison methodology, allowing to evaluate the difference of power consumption for traction of electric locomotives with asynchronous traction drive (with rational values of power and number of axes) currently operating a DC electric locomotive EP2K. On the basis of the conducted research it was concluded that there are reserves for improvement of energy efficiency of passenger locomotives on the flat sections of the road long-haul, such as operation of electric rolling stock with rational values of power and number of axes corresponding to the train weight, speed and track profile, which will significantly reduce the cost of electricity for traction of trains.

The results of infrared studies of the process of heating parts collector and brush assembly dc electrical machines. Proved diagnostic parameters for assessing the technical condition of the collector-brush assembly of electric motors: the ratio of changes in the elevation of temperature in time and space.

In article the question about possibility of extension of service life of carriage wheels by influence on technological parameters of restoration of their driving profile is considered. The correlation analysis of statistical data on volumes of machining and the size of defects on a driving surface of the wheels coming to repair is made. The mechanism of purpose of an allowance for machining of a driving profile of a wheel which will allow to reduce an unreasonable consumption of metal of a rim of a wheel in shaving is offered.

The article is devoted to the accounting problem of longitudinal non-equal-elasticity of railway track which led to forced vibrations for non-spring mass of rolling stock are interacting with multiplicative perturbation, that is increasing the amplitude of the bouncing wheel pair, or reducing it. This depends on the phase relationship between these influences .

The article is devoted to the problem of improving the DC motor winding armature insulation technical condition diagnosing quality with regard to its frequency properties by forming the equivalent circuit of the electric motor rolling stock armature winding, which allows to determine the frequency numerical values of the parameters,the results of experimental studies of the armature winding oscillatory characteristics as a single-terminal pair are given; and the dependences of the impedance, reactance and active impedance are established. The dependences between equivalent circuits elements numerical values and turn-to-turn location for further formation diagnostic model based on the results.

In the article there is the method of calculating the loss of water pressure in the water system of passenger cars, equipped with a cleaning system as a series of two filters installed and the flow of ultraviolet sterilizer screw design. There is the results of calculation of losses in the various water systems of cars with the maximum and minimum charging time and the water pressure in the water system station. The rational geometric parameters of the decontamination chamber flow ultraviolet sterilizer of the conditions to ensure complete filling of the tank car parking in the minimum time with minimum pressure of the water supply system of the station. The value of head loss does not exceed the nameplate values typical designs. The geometry of the sterilizer allows you to integrate the device into the car. Its design values are taken to develop the prototype of a UV sterilizer successfully tested. To be able to determine the loss of water pressure chamber decontamination sterilizer screw coil design is presented with a rectangular cross section, «wound» on the cylinder. Local loss of one turn calculated using the reference formula proposed by G.N. Abramovich.