scholarly journals Monitoring System of Vibroacoustic Parameters of a Working Zone

2021 ◽  
Vol vm02 (is02) ◽  
pp. 64-72
Author(s):  
Stakhova Anzhelika
Keyword(s):  
Block Diagram ◽  
Measuring Transducer ◽  
Measured Data ◽  
Topical Issue ◽  
Noise And Vibration ◽  
Working Zone ◽  
Operation Algorithm ◽  
Data Signal ◽  
Vibration Parameters ◽  
Critical Machines

This article discusses the safety problems of the use of aviation technology associated with the influence of operational vibration of aircraft. The topical issue of timely detection and prevention of a dangerous state of critical machines and mechanisms is analyzed. Modern means of measuring vibration parameters, principles of measurement, as well as characteristics of the sensitive element of the measuring transducer, are considered. The block diagram and operation algorithm of the proposed system for monitoring vibroacoustic parameters, which is built on the basis of a piezoelectric transducer, is presented. This system can measure the parameters of noise and vibration and analyze the measured data, signal about exceeding the permissible ranges for human work, display the measured data. The advantage of the proposed system is the connection of the measuring channels with the mainboard using the Bluetooth module, which allows the sensors to measure noise and vibration to be placed in any part of the working area.

scholarly journals UAV control hack system

2021 ◽  
pp. 35-41
Author(s):  
E. A. Adzhakhunov ◽  
O. V. Nikolaev
Keyword(s):  
Experimental Data ◽  
Global Positioning System ◽  
Block Diagram ◽  
Radio Channel ◽  
Alternative Solution ◽  
Positioning System ◽  
Global Positioning ◽  
Operation Algorithm

The paper presents an alternative solution to the problem of drone hacking over a radio channel and uses signal spoofing of a global positioning system (GPS, GLONASS). Within the framework of the study, block diagram and operation algorithm of the system were developed and experimental data were obtained.

scholarly journals Multifunctional Complex of Thermomechanical Calibration by Screw Compression

2021 ◽  
Vol 346 ◽  
pp. 01022
Author(s):  
Nikita Balobanov ◽  
Vyacheslav Dementyev ◽  
Sergey Makarov ◽  
Evgeny Suntsov ◽  
Alexander Korshunov
Keyword(s):  
High Temperature ◽  
Structure Data ◽  
Block Diagram ◽  
Program Structure ◽  
Calibration Process ◽  
Functional Capabilities ◽  
Hardware System ◽  
Operation Algorithm ◽  
Manual Mode

In the present paper, a soft-hardware system is considered intended for controlling the complex for high-temperature thermomechanical calibration by screw compression. The functional capabilities and block diagram of the complex are presented. The operation algorithm is briefly described and the criteria for selecting parameters of processing are given. The machining program structure, data on the operator panel, manual mode and measured parameters of the calibration process are shown.

Development a general-service weighting batcher with automatic control

2020 ◽  
pp. 516-521
Author(s):  
I.M. Shandybina ◽  
A.M. Makarov ◽  
M.P. Kukhtik ◽  
D.K. Azarjan ◽  
O.I. Melashhenko ◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Block Diagram ◽  
Kinematic Scheme ◽  
Patent Search ◽  
Unit Block ◽  
Operation Algorithm ◽  
General Service ◽  
Bulk Production

A general-service weighting batcher with automatic control, which is related to the field of packaging equipment and is intended for weighing and dosing of food or non-food bulk production, has been developed. The existing constructions have been studied and patent search of analogues has been carried out. The kinematic scheme of the mechanism has been drawn out on the basis of analysis of study subject analogues. The construction of the dosing unit, block diagram and operation algorithm of automatic control system of the batcher have been developed. Modeling and research of the device construction have been carried out. Choice of optimal dimensions of the device has been grounded mathematically.

A Study on Analysis and Improved Methods for Noise and Vibration of Compressor Motor

2011 ◽  
Vol 88-89 ◽  
pp. 564-568
Author(s):  
Xiao Yao Qian ◽  
Ping Ping Wang
Keyword(s):  
Production Quality ◽  
Measured Data ◽  
Quality Analysis ◽  
Control Problems ◽  
Analysis Tool ◽  
Noise Sources ◽  
Noise And Vibration ◽  
Motor Noise ◽  
Motor Production ◽  
Improved Methods

Motor noise and vibration reflect quality control problems for the motor production process,finding out the cause through testing and analyzing the spectrum of motor noise and vibration to educe the main noise sources, thus guiding to improve motor production quality. In this paper by means of noise and vibration measurements, meanwhile carry out statistical and analysis for the measured data to find the influence size of various factors with quality analysis tool, and then adopt some corresponding measures to control the motor noise, hoping to improve the motor quality.

scholarly journals IMPROVING SERVICE QUALITY IN IPTV NETWORKS

2019 ◽  
pp. 79-86
Author(s):  
Natalia Sergeevna Maltseva
Keyword(s):  
Block Diagram ◽  
Ip Networks ◽  
Normal Operation ◽  
Channel Switching ◽  
Parallel Methods ◽  
Operation Algorithm ◽  
Technical Advances ◽  
Parallel Configuration ◽  
Iptv Networks

Technical advances in recent years allow to transfer video over IP networks with acceptable quality. One of the main difficulties in providing services over IP networks is packet loss at the moments of mass channel switching and, as a result, deterioration in the quality of transmitted information. The research objective is improving the quality of service in IPTV networks, reliability of communication area due to the use of a redundant switching field with parallel configuration in IP switches, which provides load dividing for normal operation and avoids collapsing network under peak traffic. The block diagram and operation algorithm are given, which allows to increase the processing speed of the IPTV head station. Specific feature of load distribution is described by the fact that servicing one data flow can be provided by different information fields at different stages. There has been given a formalized model of parallel block switch. Today, modern switching systems do not allow tuning by parallel methods and combining the transfer of information with system tuning.

An Image Reconstruction System Applied to High Voltage Microscopy

1975 ◽  
Vol 33 ◽  
pp. 292-293
Author(s):  
D. E. Johnson
Keyword(s):  
High Voltage ◽  
Prior Information ◽  
Block Diagram ◽  
Three Dimensional ◽  
Real Space ◽  
Two Dimensional ◽  
Efficient Manner ◽  
Fourier Methods ◽  
Tilt Series ◽  
Methods Of Reconstruction

Increased specimen penetration; the principle advantage of high voltage microscopy, is accompanied by an increased need to utilize information on three dimensional specimen structure available in the form of two dimensional projections (i.e. micrographs). We are engaged in a program to develop methods which allow the maximum use of information contained in a through tilt series of micrographs to determine three dimensional speciman structure.In general, we are dealing with structures lacking in symmetry and with projections available from only a limited span of angles (±60°). For these reasons, we must make maximum use of any prior information available about the specimen. To do this in the most efficient manner, we have concentrated on iterative, real space methods rather than Fourier methods of reconstruction. The particular iterative algorithm we have developed is given in detail in ref. 3. A block diagram of the complete reconstruction system is shown in fig. 1.

On-line alignment and astigmatism correction using a TV and personal computer

1993 ◽  
Vol 51 ◽  
pp. 202-203
Author(s):  
F. Hosokawa ◽  
Y. Kondo ◽  
T. Honda ◽  
Y. Ishida ◽  
M. Kersker
Keyword(s):  
High Resolution ◽  
Personal Computer ◽  
Block Diagram ◽  
Incident Beam ◽  
Ccd Camera ◽  
Alignment Procedure ◽  
Astigmatism Correction ◽  
Transmission Electron ◽  
Alignment System ◽  
On Line

High-resolution transmission electron microscopy must attain utmost accuracy in the alignment of incident beam direction and in astigmatism correction, and that, in the shortest possible time. As a method to eliminate this troublesome work, an automatic alignment system using the Slow-Scan CCD camera has been introduced recently. In this method, diffractograms of amorphous images are calculated and analyzed to detect misalignment and astigmatism automatically. In the present study, we also examined diffractogram analysis using a personal computer and digitized TV images, and found that TV images provided enough quality for the on-line alignment procedure of high-resolution work in TEM. Fig. 1 shows a block diagram of our system. The averaged image is digitized by a TV board and is transported to a computer memory, then a diffractogram is calculated using an FFT board, and the feedback parameters which are determined by diffractogram analysis are sent to the microscope(JEM- 2010) through the RS232C interface. The on-line correction system has the following three modes.

An experience of elaboration and implementation of systems of slag-forming mixtures mechanized feeding into CCM moulds

2020 ◽  
Vol 76 (10) ◽  
pp. 994-1003
Author(s):  
S. P. Eron’ko ◽  
M. Yu. Tkachev ◽  
E. V. Oshovskaya ◽  
B. I. Starodubtsev ◽  
S. V. Mechik
Keyword(s):  
Economic Effect ◽  
Three Dimensional ◽  
Movable Part ◽  
High Quality ◽  
Working Zone ◽  
Fine Material ◽  
Mixing Chamber ◽  
Field Samples ◽  
Technical Solutions ◽  
Feeding Systems

Effective application of slag-forming mixtures (SFM), being fed into continuous castingg machine (CCM) moulds, depends on their even distribution on the melt surface. Manual feeding of the SFM which is widely usedd does not provide this condition, resulting in the necessity to actualize the work to elaborate systems of SFM mechanized feedingg into moulds of various types CCM. A concept of the designing of a system of SFM feeding into CCM moulds presented with the ratte strictly correspondent to the casting speed and providing formation of an even layer of fine material of given thickness on the whoole surface of liquid steel. The proposed methods of designing of the SFM mechanized feeding systems based on three-dimensional computer simulation with the subsequent verification of the correctness of the adopted technical solutions on field samples. Informattion is presented on the design features of the adjusted facilities intended for continuous supply of finely granulated and powder mixtuures on metal mirror in moulds at the production of high-quality billets, blooms and slabs. Variants of mechanical and pneumo-mechaanical SFM supply elaborated. At the mechanical supply the fine material from the feeding hopper is moved at a adjusted distance bby a rigid horizontally located screw. At the pneumo-mechanical supply the metered doze of the granular mixture is delivered by a sshort vertical screw, the lower part of which is located in the mixing chamber attached from below to the hopper and equipped with ann ejector serving for pneumatic supply of the SFM in a stream of transporting gas. It was proposed to use flexible spiral screws in the ffuture facilities of mechanical SFM feeding. It will enable to eliminate the restrictions stipulated by the lack of free surface for locatiion of the facility in the working zone of the tundish, as well as to decrease significantly the mass of its movable part and to decreaase the necessary power of the carriage moving mechanism driver. The novelty of the proposed technical solutions is protected by thhree patents. The reduction of 10–15% in the consumption of slag-forming mixtures during the transition from manual to mechanizeed feeding confirmed. The resulting economic effect from the implementation of technical development enables to recoup the costs inncurred within 8–10 months.

The methodological approach for the determination of the pressure of artificial raindrops as a question of the theory of splash soil erosion

2020 ◽  
pp. 24-28
Author(s):  
Mihail Zver'kov
Keyword(s):  
Block Diagram ◽  
Methodological Approach ◽  
Control Measures ◽  
Soil Conditions ◽  
Effective Pressure ◽  
Long Distance ◽  
Splash Erosion ◽  
Rain Drops ◽  
Artificial Rain ◽  
The Impact

To the article the results of the theoretical and experimental researches are given on questions of estimates of the dynamic rate effect of raindrop impact on soil. The aim of this work was to analyze the current methods to determine the rate of artificial rain pressure on the soil for the assessment of splash erosion. There are the developed author’s method for calculation the pressure of artificial rain on the soil and the assessment of splash erosion. The study aims to the justification of evaluation methods and the obtaining of quantitative characteristics, prevention and elimination of accelerated (anthropogenic) erosion, the creation and the realization of the required erosion control measures. The paper considers the question of determining the pressure of artificial rain on the soil. At the moment of raindrops impact, there is the tension in the soil, which is called vertical effective pressure. It is noted that the impact of rain drops in the soil there are stresses called vertical effective pressure. The equation for calculation of vertical effective pressure is proposed in this study using the known spectrum of raindrops. Effective pressure was 1.4 Pa for the artificial rain by sprinkler machine «Fregat» and 5.9 Pa for long distance sprinkler DD-30. The article deals with a block diagram of the sequence for determining the effective pressure of rain drops on the soil. This diagram was created by the author’s method of calculation of the effective pressure of rain drops on the soil. The need for an integrated approach to the description of the artificial rain impact on the soil is noted. Various parameters characterizing drop erosion are considered. There are data about the mass of splashed soil in the irrigation of various irrigation machinery and installations. For example, the rate (mass) of splashed soil was 0.28…0.78 t/ha under irrigation sprinkler apparatus RACO 4260–55/701C in the conditions of the Ryazan region. The method allows examining the environmental impact of sprinkler techniques for analyzes of the pressure, caused by raindrops, on the soil. It can also be useful in determining the irrigation rate before the runoff for different types of sprinkler equipment and soil conditions.

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.

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