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Wyświetlanie 1-15 z 102
Tytuł:
Adaptive Automatic System of Controlling Acceleration Characteristics of Electromechanical Converters with an Observing Identification Tool
Autorzy:
Kalabayeva, Aidana
Wójcik, Waldemar
Kashaganova, Gulzhan
Togzhanova, Kulzhan
Sarybayeva, Zhaksygu
Powiązania:
https://bibliotekanauki.pl/articles/27311924.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
electromechanical converters
adaptive system
control systems
identification
Opis:
The operating modes of the automatic control system for electromechanical converters for synchronization of rotor speeds have been developed and investigated. The proposed automatic speed control system allows adjusting the slave engine to the master one in a wide range from 0 to 6000 rpm. To improve the synchronization accuracy an adaptive algorithm is proposed that allows to increase the synchronization accuracy by 3-4 times. The proposed model of an adaptive automatic control system with an observing identification tool makes it possible to minimize the error in the asynchrony of the rotation of the rotors of two electromechanical converters.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 3; 615--620
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automated Linearization of a System of Nonlinear Ordinary Differential Equations
Autorzy:
Mazakova, Aigerim
Jomartova, Sholpan
Wójcik, Waldemar
Mazakov, Talgat
Ziyatbekova, Gulzat
Powiązania:
https://bibliotekanauki.pl/articles/27311950.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Ordinary differential equation
Computer algebra
stability
controllability
MatLab
Opis:
This paper investigates the possibility of automatically linearizing nonlinear models. Constructing a linearised model for a nonlinear system is quite labor-intensive and practically unrealistic when the dimension is greater than 3. Therefore, it is important to automate the process of linearisation of the original nonlinear model. Based on the application of computer algebra, a constructive algorithm for the linearisation of a system of non-linear ordinary differential equations was developed. A software was developed on MatLab. The effectiveness of the proposed algorithm has been demonstrated on applied problems: an unmanned aerial vehicle dynamics model and a twolink robot model. The obtained linearized models were then used to test the stability of the original models. In order to account for possible inaccuracies in the measurements of the technical parameters of the model, an interval linearized model is adopted. For such a model, the procedure for constructing the corresponding interval characteristic polynomial and the corresponding Hurwitz matrix is automated. On the basis of the analysis of the properties of the main minors of the Hurwitz matrix, the stability of the studied system was analyzed.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 4; 655--600
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development Of A Monitoring System For Electric Power Substations Based On Ios And Implementation Of Designs On FPGA
Autorzy:
Kalimoldayev, Maksat
Wójcik, Waldemar
Shermantayeva, Zhazira
Powiązania:
https://bibliotekanauki.pl/articles/27311962.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
IoT Internet of Things
FPGA
GPS
NAS
Opis:
In this article, a monitoring system based on IoT technologies of the substation electrical system in the Republic of Kazakhstan was developed. At the moment, the operation of power systems is extremely important to maintain the frequency of electric current over time. For management and monitoring applications, it is necessary to take into account communication within acceptable limits. IoT technologies are considered the main functions in applications for monitoring and managing energy systems in real time, as well as making effective decisions on both technical and financial issues of the system, for monitoring the main form of data registration on an electric power substation in the city of Shymkent of the Republic of Kazakhstan, for consistent effective decision-making by system operators. In this work, an Internet of Things-based monitoring system was implemented and implemented for the substation of the power system using a specialized device built into the FPGA controller for fast integrated digitalization of transformer substations of real-time distribution electrical networks. The IoT platform also provides complete remote observability and will increase reliability for power system operators in real time. This article is mainly aimed at providing a practical application that has been implemented and tested.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 4; 819--824
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating the suitability of a new telemetric capacitance-based measurement system for real-time application in irrigation and fertilization management
Autorzy:
Treder, Waldemar
Klamkowski, Krzysztof
Tryngiel-Gać, Anna
Wójcik, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2203534.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
electrical conductivity
fertigation
salinity
soil moisture
Opis:
The suitability of a new wireless smart farming system for controlling irrigation and fertilization of horticultural plants was assessed in the study. The system (name: AGREUS® ) includes sensors (soil moisture, salinity, weather data), executive modules (valve modules), and an application available on the web portal (accessed through computers and mobile devices). The studies were performed under laboratory and field conditions. Laboratory tests included appraisal of the precision of soil moisture and salinity measurements carried out with the soil probe (comparison with the results obtained by laboratory methods). Operational tests were conducted in field trials. In these trials, assessment of the possibility of practical control of irrigation and monitoring soil salinity was performed in an apple orchard. The conducted analyses have shown the usefulness of the system, not only for automatic control of irrigation but also for making decisions about the necessity to fertilize plants. The system enables continuous monitoring of changes in soil moisture and salinity, including the migration of minerals across the soil profile (using a probe with several measuring elements) as a result of the applied irrigation or rainfall. The system allows for automatic application of irrigation or fertigation depending on the adopted soil moisture and salinity thresholds. However, the tests showed that a salinity index calculated by the system does not directly correspond to the salinity values determined by laboratory methods. For this reason individual interpretation and determination of optimal ranges for plants is required.
Źródło:
Journal of Water and Land Development; 2023, 56; 67--73
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Machine learning for supporting irrigation decisions based on climatic water balance
Autorzy:
Treder, Waldemar
Klamkowski, Krzysztof
Wójcik, Katarzyna
Tryngiel-Gać, Anna
Powiązania:
https://bibliotekanauki.pl/articles/27312625.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
apple tree
evapotranspiration
irrigation scheduling
machine learning
precipitation
WEKA software
Opis:
A machine learning model was developed to support irrigation decisions. The field research was conducted on ‘Gala’ apple trees. For each week during the growing seasons (2009-2013), the following parameters were determined: precipitation, evapotranspiration (Penman-Monteith formula), crop (apple) evapotranspiration, climatic water balance, crop (apple) water balance (AWB), cumulative climatic water balance (determined weekly, ∑CWB), cumulative apple water balance (∑AWB), week number from full bloom, and nominal classification variable: irrigation, no irrigation. Statistical analyses were performed with the use of the WEKA 3.9 application software. The attribute evaluator was performed using Correlation Attribute Eval with the Ranker Search Method. Due to its highest accuracy, the final analyses were performed using the WEKA classifier package with the J48graft algorithm. For each of the analysed growing seasons, different correlations were found between the water balance determined for apple trees and the actual water balance of the soil layer (10-30 cm). The model made correct decisions in 76.7% of the instances when watering was needed and in 87.7% of the instances when watering was not needed. The root of the classification tree was the AWB determined for individual weeks of the growing season. The high places in the tree hierarchy were occupied by the nodes defining the elapsed time of the growing season, the values of ∑CWB and ∑AWB.
Źródło:
Journal of Water and Land Development; 2023, 58; 25--30
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metrological Aspects of Controlling the Rotational Movement Parameters of the Auger for Dewatering Solid Waste in a Garbage Truck
Autorzy:
Wójcik, Waldemar
Bereziuk, Oleh V.
Lemeshev, Mykhailo S.
Bohachuk, Volodymyr V.
Polishchuk, Leonid K.
Bezsmertna, Oksana
Smailova, Saule
Kurmagazhanova, Saule
Powiązania:
https://bibliotekanauki.pl/articles/27311851.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
municipal solid waste
dehydration
auger
measuring
digital control
Opis:
In the article, a device for measuring the parameters of the rotational movement of the auger for dewatering solid waste is proposed based on the analysis of signal processing methods and measurement of physical quantities. It can be used in the development of high-performance special vehicles for transporting waste as the main link in the structure of machines for the collection and primary processing of solid waste. The structural scheme of the means and block diagram of the microcontroller control program algorithm for implementation of the device for measuring the parameters of the rotational motion are proposed. The main technical characteristics of the proposed means are given. The results of experimental tests for measuring the parameters of rotational motion are shown. The results of experimental studies, which are given in the work, confirmed the reliability of the measured parameters.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 2; 233--238
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving the Problem of Discrete Process Control Synthesis Using Optimization on a Sliding Interval
Autorzy:
Julayeva, Zhazira
Wójcik, Waldemar
Kashaganova, Gulzhan
Togzhanova, Kulzhan
Mambetov, Saken
Powiązania:
https://bibliotekanauki.pl/articles/27311920.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
discrete process control
optimization
sliding interval
equation of a closed loop system
closed loop control system
Opis:
The paper brings forward an idea of multi-threaded computation synchronization based on the shared semaphored cache in the multi-core CPUs. It is dedicated to the implementation of multi-core PLC control, embedded solution or parallel computation of models described using hardware description languages. The shared semaphored cache is implemented as guarded memory cells within a dedicated section of the cache memory that is shared by multiple cores. This enables the cores to speed up the data exchange and seamlessly synchronize the computation. The idea has been verified by creating a multi-core system model using Verilog HDL. The simulation of task synchronization methods allows for proving the benefits of shared semaphored memory cells over standard synchronization methods. The proposed idea enhances the computation in the algorithms that consist of relatively short tasks that can be processed in parallel and requires fast synchronization mechanisms to avoid data race conditions.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 2; 383--389
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of rootstock and management practices to counteract replant disease in an apple orchard
Autorzy:
Tryngiel-Gać, Anna
Treder, Waldemar
Klamkowski, Krzysztof
Wójcik, Katarzyna
Kiełkiewicz, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/27312617.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
ammonium phosphate
apple orchard
replantation
soil fatigue
virgin soil
Opis:
The aim of the research was to evaluate effects of different rootstocks and management practices to counteracting replant disease in an apple orchard. The experiment was conducted in the Experimental Orchard of the National Institute of Horticultural Research in Dąbrowice, Poland, in 2014-2020. Apple trees of the cultivar ‘Ligolina’ were planted in autumn of 2013 at spacing of 3.8 × 1.4 m in the rows of an apple orchard that had been grubbed up in spring. The following experimental setups were used: (i) two types of rootstocks of different growth vigour (M.9, P14); (ii) replacement of soil in rows of trees with virgin soil; (iii) fertigation with ammonium phosphate; (iv) control (cultivation in the exhausted soil). Replantation significantly limited the growth of apple trees by reducing the cross-sectional area of the tree trunk, and the number and length of annual shoots. Fruit yields of apple trees grown on the replantation site were significantly lower than those of the trees grown in virgin soil. The use of ammonium phosphate fertigation had a positive effect on the growth and yield on the replantation site, especially when it was combined with the use of a stronger-growing rootstock (P14). The most effective environmentally friendly method of eliminating the apple replant disease is the replacement of the exhausted soil with virgin soil, i.e. soil that has not been used for growing fruit trees before.
Źródło:
Journal of Water and Land Development; 2023, 58; 17--24
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Fiber-Optic Sensors System, Based on Fiber Bragg Gratings
Autorzy:
Kalizhanova, Aliya
Kunelbayev, Murat
Wojcik, Waldemar
Kozbakova, Ainur
Aitkulov, Zhalau
Malikova, Feruza
Powiązania:
https://bibliotekanauki.pl/articles/2202138.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
fiber Bragg grating
sensor
deformation
temperature
modeling
MATLAB
Simulink
Opis:
An article herein considers the development of a fiber-optic sensor system, based on fiber Bragg gratings. Presently, fiber-optic sensors has become world-widely known amongst sensor technologies, used for monitoring engineering and construction structures. The work is linked with developing the system from fiber-optic sensors on the basis of fiber optic gratings, its characteristics, deformation behavior and temperature, acting at fiber Bragg grating by means of computer modeling. The research is focused at the analysis of characteristics and deformation and temperature behavior of fiber-optic Bragg sensor. Fiber-optic Bragg sensor with tilted grating is used for measuring deformation of the object, the strength of which is changed, dependent on the applied force, as well, for measuring and detecting any temperature deviations, influencing at fiber Bragg grating, which might bring to fire and accidents. In the research, simulation modeling there was made in the MATLAB (Simulink) software.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 98--106
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of beneficial microorganisms on the vegetative growth, yielding and nutritional status of "šampion" apple trees
Autorzy:
Treder, Waldemar
Klamkowski, Krzysztof
Sasz-Pasz, Lidia
Wójcik, Katarzyna
Tryngiel-Gać, Anna
Frąc, Mateusz
Lisek, Anna
Górnik, Krzysztof
Derkowska, Edyta
Mika, Augustyn
Powiązania:
https://bibliotekanauki.pl/articles/2131638.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
Malus domestica
fertilization
SPAD
Bacillus
Aspergillus niger
Purpureocillium lilacinum
Opis:
The effects of bacterial and fungal inocula on the growth, yielding, and nutritional status of apple trees was evaluated in 3-years experiment (2018 - 2020). The experiment included the following treatments: (i) control (unfertilized soil), (ii) no fertilization + soil application of fungi, (iii) no fertilization + soil application of bacteria. The mixture of beneficial fungi contained two species: Aspergillus niger and Purpureocillium lilacinum. The mixture of beneficial bacteria contained three strains of Bacillus (Bacillus sp., Bacillus amyloliquefaciens and Paenibacillus polymyxa). The application of beneficial microorganisms (especially bacterial strains) to the soil (without additional mineral fertilization) enhanced the growth of the apple trees. In the third year of the study (2020), the trees grown in the plots inoculated with bacteria bloomed the most intensively. Plant nutritional status (expressed as concentrations of elements in leaves) was not affected by the application of the bacterial strains or filamentous fungi. The stronger growth of trees in the plots where the bacteria were used was likely related not so much to the nutritional status of the trees, but to the mitigation of the influence of the negative factors that cause the replant disease.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2022, nr I/1; 43-62
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ethological Changes and Teratogenesis of Model Organisms as an Indicator of Biotesting of the Electromagnetic Radiation Influence
Autorzy:
Wójcik, Waldemar
Kalizhanova, Aliya
Sakun, Oksana A.
Nykyforov, Volodymyr V.
Nykyforova, Larysa E.
Nahorniak, Svitlana V.
Kistion, Volodymyr Ev.
Shevchenko, Liudmyla S.
Yesmakhanova, Laura
Junisbekov, Mukhtar
Orazbekov, Zhaslan
Turgantarova, Aigul
Powiązania:
https://bibliotekanauki.pl/articles/2173307.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
biotesting
ecological safety
electromagnetic radiation
magnetic field
model organism
activity level
teratogenesis
mortality
Opis:
With the development of information technology, electromagnetic radiation becomes a tangible view of the physical (wave) environmental pollution. Modern scientific research aimed at the components of the elec tromagnetic environment pollution problems mainly involves the anthropocentric approach. There is no procedure for determining the influence of harmful physical factors on biota, in particular in terms of water (Daphnia magna Straus) and air (Drosophila melanogaster L.) environments. A clear system of rationing of maximum permissible levels of electromagnetic radiation, including volume and ecosystems protected areas has not been developed. The article considers the relevant scientific and practical problem of creating a framework for assessing and predicting the negative impact of electromagnetic radiation on the biota related to ethological changes and teratogenesis. The characteristic of all the constituent elements of the system determines the degree of the negative impact of the induction of the magnetic field on the biota: activity, mortality; reproduction; availability, and frequency of Teratology. A method for determining the activity levels of Daphnia and Drosophila total average activity biota was developed and described. The trajectory patterns of Daphnia motion at low activity in the state of stability, with increased activity in the excited state, were created. The results of the research on the negative impact of electromagnetic radiation of industrial frequency on biota were presented. The critical levels of the magnetic field and noise pollution, which cause the depletion and destruction of the test object, the relationship between ethological changes and the occurrence of mutations depending on radiation levels were determined. The biological test objects were proven to minimize the error of the results of determination of electromagnetic effects on the biota, in comparison with the mathematical methods of research.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 42--49
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expert fuzzy systems for evaluation ofintensity of reactive edema of soft tissues in patients with diabetes
Eksperckiesystemyrozmytedo oceny intensywności reaktywnegoobrzęku tkanek miękkich u pacjentów z cukrzycą
Autorzy:
Shkilniak, Liudmyla
Wójcik, Waldemar
Pavlov, Sergii
Vlasenko, Oleg
Kanishyna, Tetiana
Khomyuk, Irina
Bezverkhyi, Oleh
Dembitska, Sofia
Mamyrbayev, Orken
Iskakova, Aigul
Powiązania:
https://bibliotekanauki.pl/articles/2174712.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
information expert system
control
method of fuzzy sets
medical diagnostics
diabetes
dentistry
informacyjny system ekspercki
sterowanie
metoda zbiorów rozmytych
diagnostyka medyczna
cukrzyca
stomatologia
Opis:
The paper analyzes the main areas of application of mathematical methods inmedical diagnostics, formulates principles of diagnostics basedon fuzzy logic; developed mathematical models and algorithms that formalize the process of making diagnostic decisions based on fuzzy logic with quantitative and qualitative parameters of thepatient's condition; developed mathematicalmodels of membership function. Mathematical modelsand algorithms have been developed that formalize the process of making diagnostic decisions based on fuzzy logic with quantitative and qualitative parameters of the patient's condition; developed mathematical models of membership functions, formalizing the representation of quantitative and qualitative parameters of the patient's condition in the form of fuzzy sets, used in models and algorithms for diagnosis and finding a diagnosis of assessing the intensity of reactive postoperative edema in patients of all study groups. An expert system was implemented for solving the problems of medical diagnosis based on fuzzy logic when assessing the intensity of reactive swelling of soft tissues, which develops in the postoperative period in patientsof all study groups against the background of diabetes.The paper analyzes the main areas of application of mathematical methods in medical diagnostics, formulates the principles of diagnostics based on fuzzy logic.
W pracy analizowane są główne kierunki zastosowania metod matematycznych w diagnostyce medycznej, formułowane są zasady diagnostyki opartej na logice rozmytej; opracowywane są modele matematyczne i algorytmy formalizujące proces podejmowania decyzji diagnostycznych w oparciuo logikę rozmytą z ilościowymi i jakościowymi parametrami stanu pacjenta; opracowywane są modele matematyczne funkcji przynależności. Opracowano modele matematyczne i algorytmy formalizujące proces podejmowania decyzji diagnostycznych w oparciu o logikę rozmytą z ilościowymi i jakościowymi parametrami stanu pacjenta; opracowano modele matematyczne funkcji przynależności formalizujące reprezentację ilościowych i jakościowych parametrów stanu pacjenta w postaci zbiorów rozmytych wykorzystywanych w modelach i algorytmach diagnozowania i znajdowania rozpoznania nasilenia reaktywnego obrzęku pooperacyjnego u pacjentów wszystkich grup badawczych. Wdrożono system ekspercki do rozwiązywania problemów diagnostyki medycznej oparty na logice rozmytej w ocenie nasilenia reaktywnego obrzęku tkanek miękkich, który rozwija się w okresie pooperacyjnymu pacjentów wszystkich grup badawczych z cukrzycą. W artykule przeanalizowano cechy zastosowania metod matematycznych w diagnostyce medycznej, sformułowano zasady diagnostyki opartej na logice rozmytej.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2022, 12, 3; 59--63
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Features of the angular speed dynamic measurements with the use of an encoder
Cechy pomiarów dynamicznych prędkości kątowej z wykorzystaniem enkodera
Autorzy:
Kukharchuk, Vasyl V.
Wójcik, Waldemar
Pavlov, Sergii V.
Katsyv, Samoil Sh.
Holodiuk, Volodymyr S.
Reyda, Oleksandr
Kozbakova, Ainur
Borankulova, Gauhar
Powiązania:
https://bibliotekanauki.pl/articles/2174720.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
angular velocity
encoder
quantization
sampling
angular velocity measuring channel
transformational function
prędkość kątowa
enkoder
kwantyzacja
próbkowanie
kanał pomiaru prędkości kątowej
funkcja konwersji
Opis:
Based on the most significant features of the angular velocity dynamic measurements selected by the authors, the main phases of measuring information transformation were established, which allowed to obtain new mathematical models in the form of transformation function, equations for estimating quantization errors, analytical dependences for measuring range that are initial for modeling physical processes occurring in such digital measuring channels with microprocessor control. The process of converting an analog quantity into a binary code is analytically described, an equation for estimating the absolute and relative quantization error is obtained and a measurement range is established, which provides a normalized value of relative quantization error for angular velocity measuring channels with encoder. For the first time, the equation of sampling error was obtained, and it was proved that the limiting factor of the angular velocity measurements upper limit is not only the normalized value of quantization error, as previously thought, but also the value of sampling frequency fD. Therefore, to expand the measurement range (by increasing the upper limit of measurement), it is proposed not only to increase the speed of analog-to-digital conversion hardware, but also to reduce the execution time of software drivers for transmitting measurement information to RAM of microprocessor system. For this purpose, the analytical dependences of estimating the upper limit of measurement based on the value of the sampling step for different modes of measurement information transmission are obtained. The practical implementation of the software mode measurement information transmission is characterized by a minimum of hardware costs and maximum execution time of the software driver, which explains its low speed, and therefore provides a minimum value of the upper limit measurement. In the interrupt mode, the upper limit value of the angular velocity measurement is higher than in the program mode due to the reduction of the software driver’s execution time (tFl = 0). The maximum value of the angular velocity measurements upper limit can be achieved using the measurement information transmission in the mode of direct access to memory (DMA) by providing maximum speed in this mode (tFl = 0, tDR = 0). In addition, the application of the results obtained in the work allows at the design stage (during physical and mathematical modeling) to assess the basic metrological characteristics of the measuring channel, aimed at reducing the development time and debugging of hardware, software, and standardization of their metrological characteristics.
Na podstawie najistotniejszych cech dynamicznych pomiarów prędkości kątowej ustalono główne fazy transformacji informacji pomiarowej, co pozwoliło na uzyskanie nowych modeli matematycznych w postaci funkcji transformacji, równań do szacowania błędów kwantyzacji, analitycznych zależności dla zakresu pomiarów, które są podstawą do modelowania procesów fizycznych zachodzących w takich cyfrowych kanałach pomiarowych ze sterowaniem mikroprocesorowym. analitycznie opisano proces konwersji wartości analogowej na kod binarny Po raz pierwszy otrzymano równanie błędu próbkowania i udowodniono, że czynnikiem ograniczającym górną granicę pomiarów prędkości kątowej jest nie tylko znormalizowana wartość błędu kwantyzacji, jak sądzono wcześniej, ale także wartość częstotliwości próbkowania fD. Dlatego w celu rozszerzenia zakresu pomiarowego (poprzez zwiększenie górnej granicy pomiaru) proponuje się nie tylko zwiększenie szybkości działania sprzętu do konwersji analogowo-cyfrowej, ale również skrócenie czasu wykonania sterowników programowych do transmisji informacji pomiarowej do pamięci RAM systemu mikroprocesorowego. w tym celu uzyskano analityczne zależności górnej granicy pomiaru od wartości kroku próbkowania dla różnych trybów transmisji informacji pomiarowej. W trybie przerwania górna wartość graniczna pomiaru prędkości kątowej jest wyższa niż w trybie programu ze względu na skrócenie czasu wykonania sterownika programowego (tFl = 0). Maksymalną wartość górnej granicy pomiaru prędkości kątowej można uzyskać przesyłając informacje pomiarowe w trybie bezpośredniego dostępu do pamięci (DMA) zapewniając maksymalną prędkość w tym trybie (tFl = 0, tDR = 0). Ponadto zastosowanie uzyskanych w pracy wyników pozwala na etapie projektowania (podczas modelowania fizycznego i matematycznego) na ocenę głównych cech metrologicznych kanału pomiarowego, co ma na celu skrócenie czasu rozwoju i debugowania sprzętu, oprogramowania oraz standaryzacji ich cech metrologicznych.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2022, 12, 3; 20--26
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil Salinity Classification Using Machine Learning Algorithms and Radar Data in the Case from the South of Kazakhstan
Autorzy:
Merembayev, Timur
Amirgaliyev, Yedilkhan
Saurov, Sultan
Wójcik, Waldemar
Powiązania:
https://bibliotekanauki.pl/articles/2202157.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
environmental correlation
soil salinity
machine learning
remote sensing
Opis:
Soil salinity is one of the major impact factors on agriculture in the South of Kazakhstan. Prediction and estimation of soil salinity before planting a season usually helps to plan for the leaching of the salt. In the paper, satellite data such as radar data and machine learning algorithms, were used to classify soil salinity. Numerical results were presented for the Turkestan region, which contains more than 102 points. The machine learning algorithms, including Gaussian Process, Decision Tree, and Random Forest, were compared. The evaluation of the model score was realized by using metrics, such as accuracy, Recall, and f1. In addition, the influence of the dataset features on the classification was investigated using machine learning algorithms. The research results showed that the Gaussian Process model has the best score among considered algorithms. In addition, the results are consistent with the outcome of the Shapley Additive exPlanations (SHAP) framework.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 61--67
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Method of Time Distribution for Environment Monitoring Using Unmanned Aerial Vehicles According to an Inverse Priority
Autorzy:
Wójcik, Waldemar
Kalizhanova, Aliya
Kulyk, Yaroslav A.
Knysh, Bohdan P.
Kvyetnyy, Roman N.
Kulyk, Anatoliy I.
Sichko, Tetiana V.
Dumenko, Viktoria P.
Bezstmertna, Oksana V.
Adikhanova, Saltanat
Zhassandykyzy, Maral
Junisbekov, Mukhtar
Smailov, Nurzhigit
Yussupova, Gulbahar
Powiązania:
https://bibliotekanauki.pl/articles/2202246.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
UAV
unmanned aerial vehicle
distributed measurement
system of mass service
environment monitoring
pollution monitoring
Opis:
This paper presents a time-saving method for monitoring the ecology of a dispersed territory using the delivery of measurement units provided by unmanned aerial vehicles with measurement sensors according to a reverse priority algorithm. It is achievable because of the decreasing mean waiting time of the order inside a queue during low-priority order servicing. The experimental research that confirms the efficiency of the proposed method in the case of delivery distributed measurement systems for low-priority measurement is carried out. The experimental research of the proposed method in the case of one-channel and many-channel SMD that can have an option of order rejection or an in-queue waiting option is conducted in WeBots. The probability distributions in the case of this system applying are compared with similar probability distributions in the case of systems of direct priority applying. Comparison and analysis enable us to conclude that the probability distribution in the case of SMD with a direct priority of delivery tends to decrease and approximates zero. This is related to the fact that means at the end of the queue to be handled have a lower priority, as these means of measurement take longer to handle the order than those at the head of the queue. Thus, the means of a low priority will be serviced in the last charge and there is a constant possibility that in some cases such orders will be rejected. The proposed method enables moderate this situation by using increasing the possibility of servicing the low-priority orders. The method can increase the efficiency of environmental monitoring and pollution emission control.
Źródło:
Journal of Ecological Engineering; 2022, 23, 11; 179--187
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 102

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