The article presents a technological scheme and the effectiveness of multifunctional machines for harvesting crops depending on the cost of funds, labor and energy
The current state of the industry and high level of development
of technologies dictates the requirements to
various electromechanical converters of energy and
electric drives. Constantly there are new requirements
to these types of devices and their characteristics that
lead to creation of more and more difficult devices of
the electric drive and control systems which example is
cascade systems of electric drives. This type of drives
solves part of problems of the modern industry. However,
creation of such devices requires development of
new approaches to design and creation of cascade systems
of the electric drive and its components where one
of the most complex challenges is determination of
parameters of electromagnetic system. In the article, a
new approach is given, in finding electromagnetic parameters
of components of the operated cascade asynchronous
electric drive, proceeding from the applied
types of the electric windings distributed in space. This
approach is realized at creation of the program complex,
which is part of system of automatic design
The most important physical properties that characterize the substance are density and saturated vapor pressure (SVP). These parameters are required for the development of new technical processes in the petroleum and chemical industries, design of pipelines, pumping and fuel equipment, etc. Existing methods for calculating of density near and on the saturation lines are imperfect, and finding of the analytic dependence of SVP of petroleum products from all defining parameters associated with great difficulties. The purpose of present work is an experimental research and development of methods for calculating the density (specific volume) near and on saturation lines, and saturated vapor pressure of gasoline straight-run fraction derived from petroleums from three fields: Mangyshlaksky, Trinity-Anastasevsky and West Siberian. The choice of objects for research is due to the necessity of creating methods for calculating of density and SVP of oils obtained from various hydrocarbon group composition petroleums. Area of state parameters in the present work by temperature (20 ÷ 320°C) and pressure (0,03 ÷ 30 MPa) provides the ability to research gasoline fractions to supercritical regions. Measurement of density and SVP of petroleum fractions performed with help of a specially created for this purpose experimental installation
In this article, the software that allows determining the ranges of deviations of a motor anchor chain current and angular velocity deviations of a DC electric drive with a thyristor converter in the
continuous currents mode has been presented
This article is written in connection with the anniver-sary of 100-th issue of the Scientific journal of Kuban state agrarian University. This event suggests the pos-sibility of studying the dynamics topics of research for publication in the Scientific journal of Kuban state agrarian University. This issue is described in the arti-cle. The instrument for this study was applied auto-mated system-cognitive analysis (ASC-analysis) and software tools - Universal cognitive analytical system "Eidos-X++"
In the research we have given a detailed description of certain structural components of the model system when adding fermented raw material into it. As the raw material we used collagen containing by-products of bovine animals of the 2nd category – lips and ears were used. The lactulose syrup and linseed flour were used as growth-promoting substances. The fermentation of the raw material was conducted by freeze-dried starter of the bacteria of Propionic Culture PS–4 and Probio–Tec ВВ–12, and also bacterial concentrate Bifilact-Pro. The fermentation parameters: the temperature 37°С, the time of the fermentation is 3 hours. The changes, taking place in the tissues under the biotechnological processing, were established with the method of the histological samples test. As the result of the conducted microstructure tests of prototypes it was determined that in the biomodification process under the influence of the propionic and bifidus bacteria marked changes occurred in the histological structure of modeling systems in the comparison with the control sample. At the same time it was ascertained that under the influence of the ferment processing a loosening of collagen fascicles happens to isolated fibrils and their fragmentation occurs. As the result, when composing protein compositions an emulsion (which is homogeneous by the structure) comes out. In the future it is recommended to use the emulsion in the receipts of boiled sausages and minced half-finished goods
The article deals with the study of the influence of the
elastic damping mechanism (EDM) on the operability
index for arable MTU on the basis of the 1,4 class
tractor. The elastic damping mechanism was designed
in order to smooth the aggregate starting, to reduce the
dynamic load in transmission, to protect the engine
from the external load vibration. The experimental
results that were obtained while full-scale field studies
of serial and test (containing EDM in transmission)
machines are given in the article. Various oscillograms
are analyzed: torque on the axis of tractor's driving
wheel, tractive effort, the speed of the driving wheel,
angular velocity of engine shaft and haulage. The
mass-spectrum analysis was carried out to study the
tractor characteristics in time more thoroughly. Such
analysis allows to evaluate qualitatively the EDM
influence. The normalized autocorrelation function and
spectrum density of variation in time are studied in
details for the following MTU characteristics: the
wheel torque, haulage and tractive effort. These
characteristics were compared with analogous
characteristics for serial MTU model. The obtained
results confirm that the EDM use in the tractor
transmission has a positive effect on the functional
MTU indexes. Obtained data can be used in
mathematical modeling of MTU functioning
The article deals with the methods of mathematical simulation of water distribution processes by the machine of unbroken front moving with deflector nozzles of sector influence. Mathematical simulation using lets choose the optimum labor and money expenditure. The nozzles work under low pressures, it results in power inputs reduction of liquid distribution process about the field along with more regular water distribution. The coefficient of water doze variation 1,71% under 7 m distance between the nozzles is got in the circulation example
Since there are many alternatives to artificial intelligence systems, there is a need of assessment of the quality of mathematical models and systems of artificial intelligence that support these models. This work is aimed at studying and developing standard methods of using the database of UCI repository to assess the quality of mathematical models of systems of artificial intelligence. The aim of this work is the development of methods for assessment of the quality of mathematical models of artificial intelligence systems for the classification of animals by external evidence-based database of the UCI repository. The objectives are: systematization, consolidation and expansion of theoretical and practical knowledge in the discipline of Intellectual information systems and technologies; study of "Eidos" intelligent information system; solving the task with the use of "Eidos" intelligent information systems. The object of research is the "zoo" database of UCI repository. In the first Chapter there is an overview of the theory to the solution of the problem, identification of problems, the original data, tools and metrization scales. In the second Chapter of the work we present the solution of the task. In the conclusion, the results of the work have been made; the conclusions on the achievement of goals and objectives have been given
Researches of fine-grained concrete testify the
possibility of using mineral mechanically activated and
nano-additives in a complex with the anti-frost
additives providing the organization of production of
concrete works at negative air temperatures that is
especially important for the Arctic regions