Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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826 kb

MATHEMATICAL MODEL OF ENERGY SUPPLY SYSTEM OF TERRITORIAL AGRICULTURAL AND SILVICULTURAL BIO-ENERGY SECTOR

abstract 0821208021 issue 82 pp. 277 – 287 31.10.2012 ru 1815
The article describes the characteristics of the modeling of energy supply of territorial agricultural and silvicultural bio-energy sector. It also presents the principles of modeling and description of the model of the generation process
171 kb

MATHEMATICAL MODEL OF GIVING AND SOIL EMISSION PROCESS WITH THE WORKING TOOLS OF THE COMBINED MACHINE FOR FOREST FIRES SUPPRESSION

abstract 0841210023 issue 84 pp. 284 – 298 28.12.2012 ru 1285
The mathematical model of the process of giving and soil emission with the working tools of a combined soil-thrower is developed for optimization of various parameters of the developed assembly
428 kb

MATHEMATICAL MODEL OF MANAGEMENT OF SCRAP PROCESS OF CRONES OF TREES BY MANIPULATOR WITH A DISK SAW

abstract 0741110017 issue 74 pp. 200 – 211 30.12.2011 ru 1391
In this article, the mathematical model of management of interaction of working body of the cutter with branches of trees is submitted. Optimization of design data of the machine for scrap of trees is executed
529 kb

MATHEMATICAL MODEL OF MOTION OF AN UNIVERSAL VEHICLE ACROSS THE FIELD

abstract 0921308081 issue 92 pp. 1212 – 1228 31.10.2013 ru 1550
The article developed a mathematical model of movement of the universal vehicle through the fields, having longitudinal and transverse slope of the surface
471 kb

MATHEMATICAL MODEL OF PLASMA SPRAYING THERMAL PROCESSES WITH ELECTRO-MECHANICAL TREATING OF COATINGS

abstract 0881304024 issue 88 pp. 373 – 395 30.04.2013 ru 1459
Theoretical questions and data of combined process of plasma spraying with simultaneous electromechanical sprayed coating treating are presented. This pro-cess includes two heat sources (plasma spraying spot and contact place of roller with sublayer) and two drains of heat from watercooled jets. The process fac-tors and their values are described on a full scale. The mathematical model of thermal process in above-mentioned object of investigation is worked out on idea of contact or seam welding
140 kb

MATHEMATICAL MODEL OF PROBABILISTIC ASSESSMENT OF THE ONSET OF TECHNOLOGICAL FAILURE OF A POTATO HARVESTER

abstract 0991405011 issue 99 pp. 189 – 200 30.05.2014 ru 1401
The mathematical model presented in this article is designed to assess the probability of occurrence probability of technological failure potato harvester according to the specific conditions and usage
369 kb

MATHEMATICAL MODEL OF REFERRING AUTOMATED SYSTEM DOCUMENTS TO INFORMATION SPHERES OF USERS RESPONSIBILITY

abstract 0921308057 issue 92 pp. 850 – 859 31.10.2013 ru 1021
In the article, we present the mathematical model of referring documents entering the automated system to the spheres of users responsibility. The possibility of application of mathematical apparatus of final predicates algebra as a basic means of model description is proved
209 kb

MATHEMATICAL MODEL OF SPEED OF THE DRIVING FOR OPTIMUM CONTROL OF DRILLING OF WELLS

abstract 1071503062 issue 107 pp. 916 – 926 31.03.2015 ru 921
Known mathematical models of mechanical speed of a driving are functions of two key parameters of management – axial load of a chisel and speeds of rotation of a chisel. The third parameter – a consumption of boring solution on which cleaning of a well of destroyed breed depends exists only in the A.A. Pogarsky model in an obvious or implicit way. The drilling management of the process of conducting of the well is carried out by regulation only of one parameter – loads of a chisel, thus other parameters are supported by constants according to the project on drilling. However, practice of drilling testifies that function of speed of drilling has extremum and for the speed of rotation of a chisel, and for a solution consumption. In work the regression analysis of experimental data of drilling for receiving mathematical model of mechanical speed of a driving is made as functions of three parameters of management, thus are received the models of speed of drilling depending separately on each of parameters at maintenance of two others constants. Schedules of the approaching functions with points of data of drilling from official reports of drilling foremen are constructed. The technique of adaptive optimum control of process by means of the received model of three variables is described: according to the current data of drilling through the set time interval by means of a method of the smallest squares drilling model coefficients constantly are recalculated - thereby the model is constantly arranged under conditions on a well face. Optimum parameters of management of drilling are determined by the adapted model, they are established on the drilling rig and the face drilling in the optimum mode is made. At breed change coefficients of model are again arranged under bottomhole conditions, optimum parameters of management for this breed, etc. are defined. As the model constantly adapts to a face, as a model it is possible to take a standard polynomial of the second degree and to recalculate its coefficients. It will also allow defining new types of models for management of drilling process
436 kb

MATHEMATICAL MODEL OF THE PROCESS OF GRANULATION OF RAW WOOD WITH A HIGH DEGREE OF DAMAGE OF ROT

abstract 1171603020 issue 117 pp. 346 – 357 31.03.2016 ru 561
The article presents the mathematical model for determining the temperature after passing trough nozzles of press-granulator, which allows to take into account heat loss through the exterior surface
415 kb

MATHEMATICAL MODEL OF THE DEVELOPMENT AND ACCUMULATION OF TREE BIOMASS

abstract 0821208015 issue 82 pp. 197 – 214 31.10.2012 ru 1529
The article describes the model of the unsteady growth of biological objects on the example of pine. The features of the growth modeling of biological objects are presented
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