Processing of strain gauge control signals by the Kalman filter

2021 ◽  
Vol 2131 (3) ◽  
pp. 032015
Author(s):  
V Vyplaven ◽  
A Kolomeets ◽  
A Popkov
Keyword(s):  
Kalman Filtering ◽  
Strain Gauge ◽  
Main Task ◽  
Software Module ◽  
Linear Convolution ◽  
Rolling Surface ◽  
Convolution Algorithm ◽  
Useful Signal ◽  
Significant Performance ◽  
Selection Of

Abstract One of the methods for detecting defects in the rolling surface of the wheels of freight cars is to measure the deformations of the rail under the passing train. The method is based on the analysis of a strain gauge signal. The main task of the strain gauge signal analysis is the selection of informative components and the removal (filtering) of interference. The paper presents methods of filtering diagnostic signals of strain gauge control and the selection of informative components. The useful signal component can be used to measure the mass of cars, to determine the dynamic load on the rails and to detect defects in the rolling surface of the wheels. The method of adaptive Kalman filtering and linear convolution are proposed as signal processing tools. Based on these algorithms, a software module based on the.NET Framework has been developed using the C# programming language. The algorithms were tested on the signals received when the train was moving along the active section of the track, with a strain gauge control system located on it. The computational complexity and speed of the algorithms are assessed, and the possibility of their further application in the autonomous mode of the system is investigated. The results show that the use of the Kalman filtering algorithm provides a significant performance advantage over the linear convolution algorithm.

SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN GURU BERPRESTASI KOTA MEDAN MENERAPKAN METODE PREFERENCES SELECTION INDEX (STUDI KASUS : DINAS PENDIDIKAN KOTA MEDAN)

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Fajar Syahputra ◽  
Mesran Mesran ◽  
Ikhwan Lubis ◽  
Agus Perdana Windarto
Keyword(s):  
Decision Making ◽  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Formal Education ◽  
Basic Education ◽  
Selection Index ◽  
Main Task ◽  
Selection Of

The teacher is a major milestone in the world of education, the ability and achievement of students cannot be separated from the role of a teacher in teaching and guiding students. Based on the Law of the Republic of Indonesia No. 14 of 2005 concerning Teachers and Lecturers, in Article 1 explained that teachers are professional educators with the main task of educating, teaching, guiding, directing, training, evaluating, and evaluating students in early childhood education through formal education, basic education and education medium. Whereas in Article 4 of the Act, it is explained that the position of teachers as professionals serves to enhance the dignity and role of teachers as learning agents to function to improve the quality of national education.Decision making is an election process, among various alternatives that aim to meet one or several targets. The decision-making system has 4 phases, namely intelligence, design, choice and implementation. These phases are the basis for decision making, which ends with a recommendation.The Preferences Selection Index (PSI) method is a rarely used decision support system method. This method is a method developed by stevanie and Bhatt (2010) to solve the Multi Criteria Decision Making (MCDM). With the right consideration, this method can be one of the tools to determine policies in decision-making systems, especially the selection of outstanding teachers. Determination of policies taken as a basis for decision making, must use criteria that can be defined clearly and objectively.Keywords: Decision Support System, PSI, Selection of Achieving Teachers

scholarly journals THE PROGRAM MODULE OF CALCULATION OF PHYSICAL WEAR OF BUILDINGS BASED ON EXPERIMENTAL ASSESSMENT OF THEIR DAMAGES

2019 ◽  
pp. 17-25
Author(s):  
O. Kuripta ◽  
Y. Vorob'eva ◽  
O. Minakova
Keyword(s):  
Programming System ◽  
Software Module ◽  
Program Module ◽  
Important Indicator ◽  
Reference Information ◽  
Module Selection ◽  
Wear And Tear ◽  
Microsoft Office ◽  
Net Framework ◽  
Selection Of

The article raises the issue of current interest of automation the process of calculation and evaluation of physical buildings deterioration. This is the most important indicator that characterizes the physical condition of the building in quantitative terms and is of interest to realtors and management companies. Calculation and assessment of physical wear and tear of buildings is a difficult and time-consuming task and is currently carried out manually or by means of Microsoft Office Excel. In this regard, the software module is proposed and developed that allows to calculate and evaluate the physical wear of buildings according to VSN 53-86 (p), which reduces the complexity and time of assessing physical wear. The software module is developed using MongoDB Server, IDE Studio 3T, Microsoft Visual Studio programming system 2017.NET Framework 4.6.1, WPF technologies, in C#, Net, using the MVVM architectural pattern. The user is provided with the following functionality when working with the software module: selection of the studied system elements, reference information of signs of their wear, automatic calculation of physical wear and reporting on the received assessment. The program module is tested at the Department of housing and communal services of the Voronezh state technical University.

scholarly journals Digital Data Processing Methods for Estimating Tractive Force of Tractors

2021 ◽  
Vol 31 (1) ◽  
pp. 127-142
Author(s):  
Vyacheslav F. Fedorenko ◽  
Vitaly E. Tarkivskiy ◽  
Nikolay P. Mishurov ◽  
Nikolay V. Trubitsyn
Keyword(s):  
Real Time ◽  
Strain Gauge ◽  
Impulse Noise ◽  
Median Filter ◽  
Digital Processing ◽  
Operating Conditions ◽  
Measuring Instruments ◽  
Important Indicator ◽  
Tractive Effort ◽  
Useful Signal

Introduction. When carrying out an energy assessment of agricultural machines and traction tests of tractors, the most important indicator is the value of the tractive effort. The existing methods for determining the tractive effort of tractors imply the use of specialized measuring instruments, such as strain gauges and devices for processing and displaying information. The accuracy of determining the tractive effort is significantly influenced by the physical and mechanical properties of soil. To process the useful signal during the measurement of tractive effort, the data stream of the strain gauge sensor must be subjected to additional digital filtering taking into account the operating conditions of the agricultural unit. Materials and Methods. The functions of changing the tractive effort obtained on the K-744R2 tractor in various gears have been analyzed. An algorithm for digital processing of the signal of a strain gauge force meter based on a median filter has been developed that makes it possible to increase the measurement accuracy. The advantage of the proposed method is the ability to cut off sharp short-term impulse noise and sharp fluctuations in the amplitude of the measured value. Results. A method for determining the amount of tractive effort using median signal processing has been proposed. A device for determining the tractive effort during testing of agricultural tractors and units has been developed. The choice of the main components of the device for determining the magnitude of the tractive effort has been substantiated. As a result of the research, a device for measuring and digital processing of the signal of a force meter based on a microcontroller and specialized software for processing initial data in real time was designed and manufactured. Discussion and Conclusion. The developed method makes it possible to exclude the negative effect of impulse noise arising in the process of measuring the tractive effort of the tractor. The proposed device for measuring the tractive effort of tractors is compatible at the level of the exchange protocol with existing devices, has a high speed of operation in real time, multi-channel operation.

scholarly journals Site selection of ecological buildings from the perspective of Chinese geomantic omen

2021 ◽  
Vol 308 ◽  
pp. 02023
Author(s):  
Lang Du ◽  
Yue Sheng ◽  
Jianing Wang
Keyword(s):  
Economic Development ◽  
Natural Environment ◽  
Site Selection ◽  
Chinese Culture ◽  
Living Environment ◽  
Modern Architecture ◽  
Main Task ◽  
Good Living ◽  
The Times ◽  
Selection Of

Geomantic theory is a natural science integrating geophysics, hydrogeology, astrology, meteorology, environmental landscape science, architecture, ecology, and human life information science. Its purpose is to carefully examine and understand the natural environment, to use and transform the nature, to create a good living environment, to win the best time, place, and people, to achieve the perfect realm of the unity of nature and man. In today’s rapid economic development and social progress, how to effectively combine architectural geomantic omen with contemporary architectural design is the concrete embodiment of modern geomantic omen culture keeping pace with The Times, and is also an important subject faced by Chinese traditional culture to benefit contemporary people and promote economic development. This paper combines Chinese geomantic omen with modern architecture and discusses the site selection of modern architecture under the guidance of geomantic omen based on the current ecological environment construction. This paper studies the site selection of ecological buildings under the guidance of geomantic omen, which provides a new idea for the application of ancient geomantic omen in the future site selection of buildings. To treat Chinese geomantic culture correctly, Chinese architecture, as the carrier of Chinese culture, should inherit critically, explore its scientific essence, and use the past for the present or use it with a little modification. This paper attempts to learn from the traditional Chinese geomantic concepts, such as wind, air, sunshine, water, and so on, and apply them to the current ecological building site selection. According to the natural environment analysis, starting from the current actual environment, applying ancient geomantic in modern construction site, adjust measures to local conditions, such as mountain gives a new meaning, while retaining the maximum illumination area, environment, plant more traditional geomantic meaning, create more appropriate, good living environment, also accord with the demand of the national ecological construction. In this paper, the attitude of advancing with The Times to look at geomancy, let geomancy theory towards the direction of the development of the real society, which is the contemporary people to study geomancy, promote geomancy theory, use geomantic omen for the benefit of modern architecture of the main task.

Modern strategies for learning a foreign language in training future teachers of the updated school

2021 ◽  
Vol 46 (1) ◽  
pp. 121-127
Author(s):  
A. Kabbassova ◽  
◽  
J. Sakenov ◽  
Keyword(s):  
Foreign Language ◽  
Learning Strategies ◽  
Bachelor's Degree ◽  
Professional Competencies ◽  
Main Task ◽  
Language Training ◽  
Future Teachers ◽  
Optimal Learning ◽  
Basic Principles ◽  
Selection Of

The relevance of teaching a foreign language to future teachers in the context of updating school education puts forward requirements for the choice of teaching strategies. The article deals with the meta-subject aspect of foreign language training of future teachers. To form the readiness of future teachers to use the potential of a foreign language, it is important to understand the basic principles of integrating the content of special disciplines and knowledge of a foreign language. The meta-subject potential of a foreign language allows you to create opportunities for the development of general and special professional competencies. The formation of the competencies necessary to work with the updated content of education is the main task of the courses of the component for the choice of the bachelor's degree program at pedagogical university. The selection of optimal learning strategies contributes to the implementation of this task. The author examines the features of the use of modern pedagogical technologies and methods in the training of teachers of a new format.

scholarly journals Arabic Query Expansion Using WordNet and Association Rules

2016 ◽  
Vol 12 (3) ◽  
pp. 51-64 ◽  
Author(s):  
Ahmed Abbache ◽  
Farid Meziane ◽  
Ghalem Belalem ◽  
Fatma Zohra Belkredim
Keyword(s):  
Performance Improvement ◽  
Association Rules ◽  
Query Expansion ◽  
Arabic Language ◽  
Selection Method ◽  
Retrieval Performance ◽  
Retrieval Systems ◽  
Information Retrieval Systems ◽  
Significant Performance ◽  
Selection Of

Query expansion is the process of adding additional relevant terms to the original queries to improve the performance of information retrieval systems. However, previous studies showed that automatic query expansion using WordNet do not lead to an improvement in the performance. One of the main challenges of query expansion is the selection of appropriate terms. In this paper, the authors review this problem using Arabic WordNet and Association Rules within the context of Arabic Language. The results obtained confirmed that with an appropriate selection method, the authors are able to exploit Arabic WordNet to improve the retrieval performance. Their empirical results on a sub-corpus from the Xinhua collection showed that their automatic selection method has achieved a significant performance improvement in terms of MAP and recall and a better precision with the first top retrieved documents.

Numerical simulations of preliminary state of stress in bundles of metal sheets on the guillotine

2017 ◽  
Vol 85 (1) ◽  
pp. 14-23 ◽  
Author(s):  
J. Kaczmarczyk
Keyword(s):  
Numerical Simulations ◽  
Experimental Studies ◽  
Cutting Parameters ◽  
Cutting Process ◽  
Main Task ◽  
Force Loading ◽  
State Of Stress ◽  
Metal Sheets ◽  
Optimum Cutting ◽  
Selection Of

Purpose: The work is aimed at determination of the influence of selected technological parameters on the preliminary state of stress in bundles of metal sheets being compressed by the pressure beam and submitted to the cutting process on a guillotine. Design/methodology/approach: The numerical simulations concerning the preliminary state of stress in the bundle of sheets were conducted by means of the finite element method and the computer system MSC.Patran with the computational module MSC.Marc. The experimental studies concerning the influence of a force loading the pressure beam on the quality of metal sheets were carried out using scanning electron microscopy. Findings: Possibilities of finding the optimum cutting parameters to maximise the values of preliminary state of stress in the bundle of metal sheets subjected to cutting. Higher values of stresses in the bundle coming from loading the pressure beam on the one hand decrease the maximum values of cutting force and thereby facilitate the performance of the cutting process, however on the other hand too high values of stresses might damage the surface of the top sheet in a bundle. Research limitations/implications: The main task of the presented research concerns the reduction of the maximum force generated on a knife during the cutting process. It is possible by increasing the values of preliminary state of stress realized in practice by applying higher values of a force loading the pressure beam. The force should not be too high in order to avoid damaging of the top sheet in the bundle loading by the pressure beam. Practical implications: The appropriate selection of the cutting parameters on account of preliminary state of stress in the bundle of sheets is essential in terms of industrial economy. It enables reducing the amount of waste caused by defects in bundles of sheets and decreases wear of the cutting tool. The research has been conducted in order to reduce the number of randomly occurring defects during cutting of metal sheets on a guillotine. Originality/value: The results acquired from the research facilitate selection of the best parameter settings required for conducting the optimum cutting process on a guillotine. The optimum set of cutting parameters leads to the reduction of defects’ number occurring during the process.

scholarly journals Pd(II) extraction from acid solutions by bis-(2-hidroxyl-5-alkylbenzyl)amine

2021 ◽  
Vol 102 (2) ◽  
pp. 24-30
Author(s):  
S.R. Mammadova ◽  
Keyword(s):  
Organic Compound ◽  
Organic Solvents ◽  
Ammonium Acetate ◽  
Main Task ◽  
Acid Solutions ◽  
Selection Of

It isknown that a series oforganiccompoundscontained in the molecule SH, NH qroups have theabilityto formtheintracomplex compounds under certain conditions. These compounds allowto carryoutthe extraction in acidic mediumandthereforepreventthehydrolysis process. They are not dissolved in water but are soluble in various solvents and form colored solutions and so may be used in extraction chemistry. The main purpose of this paper was to study the ability to extract palladium by bis-(2-hidroxyl-5-alkylbenzyl)amine, synthesized in the laboratory on the basis of industrial alkylphenols. Ammonium acetate with various pH wasused as a buffer to extract palladiumfromPdCl2·2H2O0.1 mkg/ml solution. The main task for theuse of inert organic compound in extraction is the selection of a reagent which dissolves it but does not form any compound. For this purpose the influence of different solvents on this reagent was researched. The experiments show that bis-(2-hidroxyl-5-alkylbenzyl)amine is dissolved well in organic solvents. Itssolution, for examplein kerosene, is light-resistant, does not hydrolyze in water, alkalis and acids.Thus bis-(2-hidroxyl-5-alkylbenzyl)amine may be recomended for palladium extraction.

scholarly journals СИНТЕЗ ОПТИМАЛЬНОГО АЛГОРИТМУ ПОЛЯРИЗАЦІЙНОЇ СЕЛЕКЦІЇ КОРИСНИХ СИГНАЛІВ НА ФОНІ ПАСИВНИХ ЗАВАД В РАДАРІ З СИНТЕЗУВАННЯМ АПЕРТУРИ

2020 ◽  
pp. 109-115
Author(s):  
Валерій Костянтинович Волосюк ◽  
Володимир Володимирович Павліков ◽  
Семен Сергійович Жила ◽  
Микола Вікторович Руженцев ◽  
Володимир Віталійович Кошарський ◽  
...  
Keyword(s):  
Maximum Likelihood ◽  
Background Radiation ◽  
Optimal Algorithm ◽  
Underlying Surface ◽  
Matched Filtering ◽  
Antenna Aperture ◽  
External Interference ◽  
Useful Signal ◽  
Passive Interference ◽  
Selection Of

Using the method of maximum likelihood, the optimal algorithm of polarization selection of objects on the background of the underlying surface, hydrometeors, urban buildings from aerospace carriers of radio electronic equipment has been synthesized. To solve the problem polarimetric properties of the scattered electromagnetic radiation of different natural environments and anthropogenic objects were analyzed. Has been determined the functional-determined mathematical model of the useful signal, the structure and correlation characteristics of scattered background radiation and white noise inside the multichannel receiver. It is assumed that the wanted signals are measured with phase accuracy in a coherent receiver. When solving the optimization problem, the method of the maximum likelihood functional and the likelihood functional for correlated processes were used, contains the inverse matrix of inverse correlation functions of the observation equation. The obtained signal processing algorithm, in addition to the classical operations of accumulating the trajectory signal with the preservation of the phase structure and its matched filtering, provides for polarization and frequency selection in the line of decorrelation filters. In the case when the internal noise is very small in comparison with external interference and the correlation between the channels of vertical and horizontal polarization approaches unity, almost complete compensation of passive interference occurs. Further spectral rejection of the reflected signals is practically unnecessary and it is possible to restrict ourselves only to matched filtering of the useful signal. In the absence of background radiation correlation, the channels for receiving oscillations of different polarizations become independent and the main operation for the selection of useful signals is spectral rejection of passive interference and matched filtering of the useful signal. The developed algorithm can be implement in cognitive radars due to its adaptability to the parameters of background radiation in accordance with the change in the scattering covariance matrix of the underlying surface. Based on the results obtained, a block diagram of a multichannel polarization radar with synthesized antenna aperture has been developed.

Sign in / Sign up

Export Citation Format

Share Document