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Wyszukujesz frazę "monitoring online" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
The look-up algorithm of monitoring an object described by non-linear ordinary differential equations
Autorzy:
Hawro, Przemysław
Kwater, Tadeusz
Bartman, Jacek
Kwiatkowski, Bogdan
Powiązania:
https://bibliotekanauki.pl/articles/2204529.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adaptive estimation
polluted river
MATLAB
lookup algorithm
monitoring online
algorytm wyszukiwania
monitorowanie on-line
zanieczyszczenie rzeki
szacowanie adaptacyjne
Opis:
The article proposes an adaptive algorithm that generates all object signals, including those for which measurements are not performed due to the difficulties associated with on-line measurements. The algorithm is modeled on the idea of the Kalman filter using its equation, however, the selection of gains is optimized in a different way, i.e. the constant values depend on the adopted ranges of adaptation errors. Moreover, the knowledge of the statistics of all noise signals is not imposed and there is no linearity constraint. This approach allowed to reduce the complexity of calculations. This algorithm can be used in real-time systems to generate signals of objects described by non-linear differential equations and it is universal, which allows it to be used for various objects. In the conducted research, on the example of a biochemically contaminated river, only easily measurable signals were used to generated the object signals, and in addition, in the case of absence some measurements, the functioning of the algorithm did not destabilize.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 2; art. no. e144603
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Online X-Ray Fluorescence Monitoring of Coarse Ore for Silver at the Process Conveyors at Kazakhmys Corporation LLC
Monitorowanie online za pomocą fluorescencji rentgenowskiej gruboziarnistej rudy srebra na przenośnikach w zakładzie przeróbki w Kazakhmys Corporation LLC
Autorzy:
Nigmatulin, Aydar
Abdrakhmanova, Zaure
Kan, Andrey
Efimenko, Sergey
Makarov, Dmitry
Powiązania:
https://bibliotekanauki.pl/articles/318291.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
X-ray fluorescence method
RLP-21T ore monitoring station
copper
silver
cadmium
molybdenum
online monitoring of ore grade
process conveyors
rentgenowska metoda fluorescencji
stacja monitorowania rudy RLP-21T
miedź
srebro
kad
molibden
monitoring online rudy
przenośniki taśmowe
Opis:
This paper examines the process and methodological aspects of implementing online X-ray fluorescence monitoring of ore in terms of its silver, cadmium, zinc, lead, molybdenum, and iron grade at the process conveyors at Balkhash and Karagaily Concentrators and the main conveyor of the Nurkazgan underground mine operated by Kazakhmys Corporation LLC. The research was complicated by the need to: a) ensure reliable measurement of silver and cadmium in the range of 1+ ppm, molybdenum in the range of 10+ ppm, as well as copper, zinc, lead, and iron in the ore size class –300 mm; b) implement monitoring of the grade of these elements (except molybdenum) at Balkhash Concentrator in the waste slag of Balkhash Copper Smelter, characterized by a very complex elemental matrix. A modification of the ore monitoring station RLP-21T (by Aspap Geo LLC, Alma-Ata) was developed, implemented, and thoroughly tested for online monitoring of low-grade silver ore flows. Energy dispersive X-ray fluorescence method was adopted for ore assays. Instrument spectra were measured every second. Silver, cadmium, and molybdenum grade was calculated based on 40 measurements, copper, zinc, lead, and iron grade – based on 20 measurements.
W artykule przeanalizowano proces i aspekty metodologiczne wdrażania zdalnego monitorowania zawartości srebra, kadmu, cynku, ołowiu, molibdenu i żelaza w zakładach wzbogacania Balkhash i Karagaily oraz na głównym przenośniku w kopalni podziemnej Nurkazgan obsługiwana przez Kazakhmys Corporation LLC. Badania były skomplikowane ze względu na konieczność: a) zapewnienia niezawodnego pomiaru srebra i kadmu w zakresie 1+ ppm, molibdenu w zakresie 10+ ppm, a także miedzi, cynku, ołowiu i żelaza w klasie –300 mm; b) wdrożyć monitorowanie tych pierwiastków (z wyjątkiem molibdenu) w koncentracie Balkhash ,w żużlu odpadowym Huty Miedzi Balkhash, charakteryzującym się bardzo złożoną matrycą elementarną. Opracowano, wdrożono i dokładnie przetestowano modyfikację stacji monitorowania rudy RLP-21T (firmy Aspap Geo LLC, Alma-Ata) do monitorowania online przepływów rudy srebra o niskiej jakości. Do fluorescencji rentgenowskiej zastosowano dyspersyjną metodę rentgenowską. Widma mierzono co sekundę. Zawartość srebra, kadmu i molibdenu obliczono na podstawie 40 pomiarów, a miedzi, cynku, ołowiu i żelaza – na podstawie 20 pomiarów.
Źródło:
Inżynieria Mineralna; 2020, 2, 1; 145-148
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal monitoring for Metallic Additive Manufacturing multi-beads multi-layers parts
Autorzy:
Rauch, Matthieu
Hascoet, Jean-Yves
Rousseau, Clement
Ruckert, Guillaume
Powiązania:
https://bibliotekanauki.pl/articles/1833770.pdf
Data publikacji:
2021
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
wire arc additive manufacturing
thermal indicator
thermal online monitoring
high temperature zone
Opis:
Among Metallic Additive Manufacturing processes, Directed Energy Deposition (DED) processes are very promising for the Industry. An issue that prevents a larger development of DED is the reliability of the process, since its complexity makes the result of the manufacturing variable. Thermal behavior is a critical aspect for which uncontrolled phenomena can lead to part failure. Some thermal monitoring and closed-loop control methods have been developed, that enables to observe and regulate the heating of the processed part. However, these methods rely on local measures from a region or a single external surface of a part, and thus provide partial information of thermal fields in the whole part volume. This paper proposes a method that combines diverse data to compute online a process indicator that is meaningful for the thermal state of the whole part, and hence for the control of the manufacturing of multi-beads multi-layer parts. A simulation-based model using thermal partial data is proposed. An online monitoring experiment is proposed for validation of the model. Relevance of the control method to ensure mechanical properties of the part is then tested.
Źródło:
Journal of Machine Engineering; 2021, 21, 3; 92--100
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Online monitoring system of air distribution in pulverized coal-fired boiler based on numerical modeling
Autorzy:
Żymełka, P.
Nabagło, D.
Janda, T.
Madejski, P.
Powiązania:
https://bibliotekanauki.pl/articles/240897.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pulverized coal-fired boiler
air distribution
online monitoring system
coal combustion
combustion airflow measurement
numerical modeling
kotły pyłowe opalane węglem
dystrybucja powietrza
system monitorowania online
spalanie węgla
modelowanie numeryczne
Opis:
Balanced distribution of air in coal-fired boiler is one of the most important factors in the combustion process and is strongly connected to the overall system efficiency. Reliable and continuous information about combustion airflow and fuel rate is essential for achieving optimal stoichiometric ratio as well as efficient and safe operation of a boiler. Imbalances in air distribution result in reduced boiler efficiency, increased gas pollutant emission and operating problems, such as corrosion, slagging or fouling. Monitoring of air flow trends in boiler is an effective method for further analysis and can help to appoint important dependences and start optimization actions. Accurate real-time monitoring of the air distribution in boiler can bring economical, environmental and operational benefits. The paper presents a novel concept for online monitoring system of air distribution in coal-fired boiler based on real-time numerical calculations. The proposed mathematical model allows for identification of mass flow rates of secondary air to individual burners and to overfire air (OFA) nozzles. Numerical models of air and flue gas system were developed using software for power plant simulation. The correctness of the developed model was verified and validated with the reference measurement values. The presented numerical model for real-time monitoring of air distribution is capable of giving continuous determination of the complete air flows based on available digital communication system (DCS) data.
Źródło:
Archives of Thermodynamics; 2017, 38, 4; 109--125
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative analysis of reaction gases or exhaust using an online process mass spectrometer
Autorzy:
Wei, Fu-Qiang
Huang, Ze-Jian
Jian, You
Dai, Xin-Hua
Fang, Xiang
Jin, Shang-Zhong
Powiązania:
https://bibliotekanauki.pl/articles/27311738.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
online quantitative analysis
mass spectrometers
mathematical models
monitoring
Opis:
Online quantitative analysis of reaction gases or exhaust in industrial production is of great significance to improve the production capacity and process. A novel method is developed for the online quantitative analysis of reaction gases or exhaust using quantitative mathematical models combined with the linear regression algorithm of machine learning. After accurately estimating the component gases and their contents in the reaction gases or exhaust, a ratio matrix is constructed to separate the relevant overlapping peaks. The ratio and calibration standard gases are detected, filtered, normalized, and linearly regressed with an online process mass spectrometer to correct the ratio matrices and obtain the relative sensitivity matrices. A quantitative mathematical model can be established to obtain the content of each component of the reaction gases or exhaust in real time. The maximum quantification error and relative standard deviation of the method are within 0.3% and 1%, after online quantification of the representative yeast fermenter tail gas.
Źródło:
Metrology and Measurement Systems; 2023, 30, 2; 337--351
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiary i monitoring stanu izolacji uzwojeń maszyn elektrycznych w przemyśle – doświadczenia własne
Measurements and monitoring of condition of winding insulations in electrical machines in the industry - own experience
Autorzy:
Plutecki, Z.
Szymaniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/1371683.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyna elektryczna
izolacja uzwojeń
pomiar online
pomiar off-line
monitoring
Opis:
The article presents a review of measurement methods used in the industry to evaluate the condition of winding insulations in electrical machines in case of off-line and on-line measurements. In particular, it demonstrate experience of the authors from measurements carried out for several years in regarding the type of monitoring of condition of winding insulations in high-power electrical motors, important from the viewpoint of production processes. The authors also show measurement methods. Examples of measurement results are presented and discussed.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 1, 89; 33-38
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the Effect of Environmental Factors on the Corrosion of Water Distribution System Based on Analysis of On-line Corrosion Monitoring Results
Autorzy:
Jażdżewska, A.
Gruszka, M.
Mazur, R.
Orlikowski, J.
Banaś, J.
Powiązania:
https://bibliotekanauki.pl/articles/355721.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
water distribution system
acid rain
corrosion monitoring
online
linear polarization method
Opis:
Corrosion of water distribution system is a significant issue causing problems with quality, safety and continuity of distribution. The changes of corrosion rates of the water distribution systems in Cracow made of carbon steel were investigated by analysis of online corrosion monitoring system results. Corrosion rates were determined using the linear polarization method. The impactof rain, temperatures, conductivity, dissolved oxygen content on corrosion rate were characterized. The corrosivity of different water sources like mountain water, underground water or river water were indicated. The possible actions for reducing corrosion losses were characterized. Results show that pollution of the environment in the form of acid rain and runoff from agriculture as well as the type of the source water has significant influence on corrosion of water distribution system. Corrosion monitoring system gives possibility of controlling corrosion rate by mixing waters from different sources in the way to obtain less corrosive mixture. (see Fig 8).
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 1; 109-116
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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