CALCULATION OF STAGES OF THE TECHNOLOGICAL PROCESS OF MANUFACTURE OF PPD DETECTORS USING COMPUTER MATHEMATICAL MODELING AND PRODUCTION OF ALPHA RADIOMETER ON THEIR BASIS

2020 ◽  
Vol 7 (2) ◽  
pp. 21-28
Author(s):  
SALI RADZHAPOV ◽  
◽  
RUSTAM RAKHIMOV ◽  
BEGJAN RADZHAPOV ◽  
MARS ZUFAROV
Keyword(s):  
Mathematical Modeling ◽  
Technological Process ◽  
Block Diagram ◽  
Large Diameter ◽  
Silicon Detector ◽  
Digital Processing ◽  
Main Element ◽  
Alpha Radiation ◽  
Initial Silicon ◽  
Natural Isotopes

The article describes the developed radiometer for Express measurement of alpha radiation of radioactive elements based on a large-diameter silicon detector. The main element of the PPD detector is made using computer mathematical modeling of all stages of the technological process of manufacturing detectors, taking into account at each stage the degree of influence of the properties of the initial silicon on the electrophysical and radiometric characteristics of the detector. Detectors are manufactured for certain types of devices. The developed radiometer is designed to measure alpha radiation of natural isotopes (238U, 234U, 232Th, 226Ra, 222Rn, 218Po, 214Bi, etc.) in various environments. It also shows the principle of operation of the device, provides a block diagram of the measuring complex, describes the electronic components of the radiometer, as well as the block diagram. Signal transformations (spectrum transfer, filtering, accumulation) are implemented programmatically on the basis of a digital processing module. The device can detect the presence of specific elements in various environments, as well as protect people from the harmful effects of adverse radiation and can be used both in the field and stationary.

scholarly journals Determining the optimal parameters of machines for processing the seed mass of vegetable and melon crops

2020 ◽  
Vol 106 (2) ◽  
pp. 95-103
Author(s):  
V. Shebanin ◽  
Keyword(s):  
Mathematical Modeling ◽  
Technological Process ◽  
Block Diagram ◽  
Seed Mass ◽  
Canonical Decomposition ◽  
Optimal Parameters ◽  
Third Order ◽  
The Third ◽  
Canonical Expansion ◽  
Melon Seeds

To determine the optimal parameters of machines for isolating the seed mass of vegetable and melon crops, a modeling method is presented, which is based on the nonlinear canonical decomposition of a random vector. A block diagram of the procedure for calculating the parameters of the canonical expansion is presented. The method of mathematical modeling was tested in the study of the technological process of separating melon seeds on an experimental installation. Mathematical models of the third order for purity and loss of seeds are presented, describing the technological process of separation for melon seeds.

scholarly journals Model of the dynamics of a wheeled vehicle for a complex of full-scale-mathematical modeling

2020 ◽  
Vol 1 (4) ◽  
pp. 46-60
Author(s):  
B.B. Kositsyn ◽  
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Real Time ◽  
Block Diagram ◽  
Plane Motion ◽  
Full Scale ◽  
Practical Significance ◽  
Modes Of Operation ◽  
Wheeled Vehicle ◽  
Full Scale Tests

Introduction. The use of the method of full-scale-mathematical modeling in “real time” opens up wide opportunities associated with the analysis of the modes of operation of the “man – vehicle – environment” system, as well as the study of the loading of units and assemblies of vehicles. The existing research complexes of full-scale mathematical modeling are suitable for obtaining most of the indicators usually determined by full-scale tests. The difference lies in the ability to fully control the course of virtual testing, recording any parameters of the vehicle movement, taking into account the “human factor”, as well as complete safety of the experiment. Purpose of research. The purpose of this work is to create a mathematical model of the dynam-ics of a wheeled vehicle, suitable for use in such a complex of full-scale mathematical modeling and assessment of the load of transmission units in conditions close to real operation. Methodology and methods. The proposed model is based on the existing model of the dynamics of a wheeled vehicle developed at Bauman Moscow State Technical University. Within the framework of the model, the dynamics of a vehicle is described as a plane motion of a rigid body in a horizontal plane. The principle of possible displacements is applied to determine the normal reac-tions of the bearing surface. The interaction of the wheel with the ground in the plane of the support base is described using an approach based on the “friction ellipse” concept. To enable the driver and operator of the full-scale mathematical modeling complex to drive a virtual vehicle in “real time” mode, the mathematical model is supplemented with a control system that communicates between the control parameter set by the driver by pressing the accelerator and brake pedals and the control actions of the vehicle's transmission units, such as: an electric machine, an internal combustion en-gine, a hydrodynamic retarder and a brake system. The article presents a block diagram of the de-veloped control algorithm, as well as approbation of the system's operation in a complex of full-scale mathematical modeling. Results and scientific novelty. A mathematical model of the dynamics of a wheeled vehicle was developed. It opens up wide possibilities for studying the modes of operation of the “driver-vehicle-environment” system in “real time”, using a complex of full-scale mathematical modeling. Practical significance. A mathematical model of the dynamics of a wheeled vehicle was devel-oped. It is supplemented with an algorithm for the distribution of traction / braking torques between the transmission units, which provide a connection between the driver's pressing on the accelerator / brake pedal and the control parameters of each of the units.

Math Modeling of Vacuum Conductive Timber Drying

2014 ◽  
Vol 1040 ◽  
pp. 478-483
Author(s):  
M. Goreshnev ◽  
E. Litvishko
Keyword(s):  
Mathematical Modeling ◽  
Mass Transfer ◽  
Mathematical Models ◽  
Heat And Mass Transfer ◽  
Block Diagram ◽  
Calculated Data ◽  
Math Modeling ◽  
Advantages And Disadvantages ◽  
Transfer Problems

The article is devoted to the mathematical modeling of vacuum conductive timber drying. Analysis of known mathematical models allowed revealing their advantages and disadvantages. The modeling block diagram based on the drying periods is proposed. Lykov’s equations have been selected to solve heat and mass transfer problems. The comparison of experimental and calculated data has been conducted.

Mathematical Modeling of Process Moving Cargo by Overhead Crane

2014 ◽  
Vol 701-702 ◽  
pp. 715-720 ◽  
Author(s):  
Vitaly Shcherbakov ◽  
Mikhail Korytov ◽  
Roman Sukharev ◽  
Elena Volf
Keyword(s):  
Mathematical Modeling ◽  
Mechanical System ◽  
Second Generation ◽  
Block Diagram ◽  
Design Stage ◽  
Bridge Crane ◽  
Overhead Crane ◽  
Operating Modes ◽  
Design Scheme ◽  
Simulink Model

According to the proposed design scheme of the overhead crane, with the use of blocks package SimMechanics Second Generation of MATLAB, a conceptual block diagram of connections was developed, according to which the was created Simulink-model of the mechanical system of the bridge crane with PID regulator. Simulink-model allows us to study the operating modes of the overhead crane on the its design stage.

scholarly journals Theory and design of an experimental intelligent plant for regulating plant productivity

2020 ◽  
Vol 329 ◽  
pp. 03038
Author(s):  
Dmitry Polenov ◽  
Alexey Belyi
Keyword(s):  
Transfer Functions ◽  
Block Diagram ◽  
Plant Productivity ◽  
Main Element ◽  
Control Algorithms ◽  
Experimental Setup ◽  
Training Algorithms ◽  
Research System ◽  
Factors Affecting ◽  
General Block Diagram

The article proposes to regulate the values of factors affecting the productivity of plants using an artificial intelligence device, the main element of which is a mathematical neuron. The installation is adaptive to the growing area of the investigated plant object. This increases its efficiency and increases the importance of plant productivity. A block diagram of the experimental setup, a general block diagram of the setup control algorithms have been developed, one of the options for using the experimental setup as a research system for identifying the most significant combinations of factors affecting plant productivity has been considered. To identify the most significant combinations of factors, algorithms based on generalized training algorithms for the Hebb neural network model were used, and a study was made of a model of an installation of four inputs with sigmoidal transfer functions.

scholarly journals IMPROVEMENT OF DESIGN OF PNEUMATIC HAMMER FOR DRIVING VERTICAL PIPES WITH LARGE DIAMETER INTO SOIL

2020 ◽  
Vol 2 ◽  
pp. 219-225
Author(s):  
Vladimir V. Chervov
Keyword(s):  
Fatigue Failure ◽  
Distribution System ◽  
Work Performance ◽  
Large Diameter ◽  
Large Mass ◽  
Operating Principle ◽  
Main Element ◽  
Air Distribution ◽  
Pneumatic Hammer ◽  
Basic Parameters

A brief description of the equipment used for trenchless pipe laying is given. The basic parameters of a pneumatic hammer designed for driving pipes into soil with an open end greater than 426 mm in diameter are substantiated. The description of the device and operating principle of a pneumatic hammer with an air distribution system using an elastic circular valve as the main element is presented. Based on the analysis of many-year operation of equipment for trenchless pipe laying and driving vertical pipes, the frequency and sequence of crack appearance, destruction and failure of the main parts of the pneumatic hammer are determined. New principles of calculation and design of a pneumatic hammer with a large mass of the striking part without loss of work performance are proposed. The solution to the problems associated with fatigue failure of the main parts is a decrease in striking velocity.

scholarly journals SAFETY OF THE FUNCTIONAL FOOD PRODUCT – CANNER "DESSERT FROM JERUSALEM ARTICHOKE" IN THE PROCESS OF ITS MANUFACTURE

2018 ◽  
pp. 73-76
Author(s):  
L. K. Patsyuk ◽  
T. V. Fedosenko
Keyword(s):  
Technological Process ◽  
Block Diagram ◽  
Control Point ◽  
Jerusalem Artichoke ◽  
Food Product ◽  
Total Production ◽  
Critical Control Point ◽  
Critical Control Points ◽  
Functional Product ◽  
New Type

In this article, based on the analysis of the technological process for the production of a new type of functional product "Desert from Jerusalem artichoke", potentially dangerous factors that may arise when making canned products are determined, and the probability and reasons for their occurrence are justified. Proceeding from these, determined by us dangerous factors, a block diagram of the control of the technological process of canning "Desert from Jerusalem artichoke" was compiled. In this block diagram, the main critical and control-critical points are established at the respective manufacturing stages throughout the entire technological process of product development. In addition, the severity of the consequences from the appearance of these dangerous factors and the ways of their elimination are estimated. The severity of the consequences for different factors is different. So, it can be insignificant, because the dangerous factors that cause it can be corrected after identifying and eliminating the cause of their defiant. They can be attributed to "not very significant." Therefore, a checkpoint is set in this operation. The severity of the consequences from other dangerous factors can be very significant – lead to diseases and even poisonings, so here is set a critical control point. Developed: The block diagram of the control of the technological process for the production of a new type of functional product "Dessert from Jerusalem artichoke" and "The map of critical control points to be monitored", established by the flowchart, allows the total production process of manufacturing safe food product on the principles of HACCP.

scholarly journals MODELING AND OPTIMIZATION OF THE TECHNOLOGICAL PROCESS OF EXTRUDING BUCKWHEAT TEMPERATURE PARAMETERS

2020 ◽  
Author(s):  
B Tarabayev ◽  
K Baigenzhinov
Keyword(s):  
Mathematical Modeling ◽  
Technological Process ◽  
Process Parameters ◽  
Processing Time ◽  
Regression Equation ◽  
Raw Material ◽  
Modeling And Optimization ◽  
Grain Crops ◽  
Efficiency And Effectiveness ◽  
Rational Process

This article discusses the possibility of mathematical modeling andoptimization of parameters of the process of buckwheat. As a result of the research,a regression equation was obtained, which allows to predict the optimal extrusionparameters of buckwheat and reduce the number of experiments. Extrusionprocessing is one of the most attractive methods of processing grain crops to obtainsemi-finished products. The efficiency and effectiveness of the use of this equationis proved in laboratory conditions. The influence of all factors was studied duringthe extrusion of buckwheat grain, pressure, temperature, processing time andhumidity of the feedstock on the yield of blasted cereal, the content of watersoluble substances, the swelling and density of the extruded raw material. Amathematical model of the process of extrusion of buckwheat grain made itpossible to find rational process parameters allowing to obtain extrudates with highconsumer properties.

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