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Actual problems of Mathematics, Physics and Mecanics
MATHEMATICAL MODELS OF MULTI-COORDINATE ELECTROMECHATRONIC SYSTEMS OF INTELLECTUAL ROBOTS
In the article mathematic description of mechatronicmoduleinintelligent robots and robotic systems are observed. To display the structure of mechatronic modules, which consist of interrelated different electrical, magneticand meatn components, mathematic models by the help of multiplication theory...
3 July 2019, 14:10
DEVELOPMENT OF INGIBITOR COMPOSITION OF CORROSION FOR PROECTION OF STEEL ARMATURE
For over 150 years, reinforced concrete structures have been used inconstruction. A long-term study of the durability of reinforced concrete structures invarious operating conditions shows that dangerous damages caused by the development of reinforcement corrosion, which pose a threat to...
3 July 2019, 14:07
PRINCIPLES OF AUTOMATION OF PROCESS ACCOUNTING AND CONTROL DEVICES OF RAILWAY AUTOMATICS AND TELEMECHANICS
The article deals with the issues of functional support of the automated system of accounting and control of railway automation and telemechanics devices: signaling, centralization and blocking; the components of the electronic Executive part of the system are presented; the conceptual model is...
3 July 2019, 14:06
AN ANALYSIS OF THE WORK OF PASSENGERS TRAINS ON TWOZONE SECTIONS AND THEIR ALERT AUTOMATION
Company "Uzbekistan railways" has made a great contribution te safety of passenger traffic. It is expected that passenger trains will have anmber factors affecting the large passenger traffic in the coming days and wll be i te ture. That is why passenger trains require that the issuance...
3 July 2019, 14:02
DEVELOPMENT OF THE THICKENER COMPOSITION WITH LOCAL RAW-MATERIALS FOR PRINTING BLENDED FABRICS COTTON-SILK
In the following article the developed newthickener are studiedbasedon hydrolyzed acrylic emulsion (HAE), uzchitan and carbaxymethyl starchforprinting mixed fabrics cotton-silk. Investigated coloristic prop- erty printedfabrics....
3 July 2019, 14:00
STRUCTURAL FEATURES OF SOLID SOLUTIONS (InSb)1-x(Sn2)x FILMS GROWN FROM A LIQUID PHASE ON GaAs SUBSTRATES AND SOME PHOTOELECTRIC PROPERTIES OF HETEROSTRUCTURES ON THEIRBASIS
Layers of solid solutions (InSb)1-x(Sn2)x on (100) GaAsand(100) GaP substrates were grown by liquid phase epitaxy fromanindiummeltsolution. The solid solution (InSb)1-x(Sn2)x (0 ≤х≤ 0.05) had a mono-crystal structurewith the orientation (100), constant of the lattice as.s. = 6.486...
3 July 2019, 13:58
METHOD FOR DETERMINING HYDRAULIC RESISTANCEDURINGFLUID FLOWIN PIPES
In the article, pulsating fluid flows in tubes with changingwalls,which are of great importance in biological mechanics, in particular, intheflowofblood in the arterial vessel, are investigated. The solution of the problem obtained formulas for the distribution of pressure gradient, velocity and...
3 July 2019, 13:52
ABOUT WAVEFUNCTIONS IN LOW-DIMENSIONAL SEMICONDUCTORS
The impressive progress in the fabrication of low-dimensional semiconductor structures during the past two decades has made it possible to reduce the effective device dimension from three-dimensional bulk materials, to quasi-two dimensional quantum well systems, to quasi-one dimensional quantum...
3 December 2018, 18:05
STABILITY OF FINITE DIFFERENCE SCHEMES FOR SIMMETRIC HYPERBOLIC SYSTEMS
In this article we investigate the stability of the finite difference schemes using the Neumann method for symmetric hyperbolic systems. For the two-dimensional symmetric hyperbolic system, the condition of the Lax-Wendroff scheme stagnation has been studied. To check for resilience using MathCad...
3 December 2018, 18:04
SHOCK-ABSORBING VIBRATIONS OF THE ELASTIC ELASTOMERIC END OF THE ROTARY INERTIA
The problem of the longitudinal vibrations of the elastic strerin of the longitudinal impact of the second free end of the end of the tape is settled on the basis of the second order (classic) differential equation. Depending on the nature of stroke endings and the nature and conditions of the...
3 December 2018, 18:02