Temat: electromagnetic modelling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Metal detector excited by frequency-swept signal
Autorzy:: Svatoš, J.
Vedral, J.
Fexa, P.
Powiązania:: https://bibliotekanauki.pl/articles/221024.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: metal detection
polyharmonic signals
Frequency Sweep
modelling of electromagnetic induction
analog signal processing
Opis:: This paper describes the theoretical background of electromagnetic induction from metal objects modelling. The response function of a specific case of object shape - a homogenous sphere from ferromagnetic and nonferromagnetic material is introduced. Experimental data measured by a metal detector excited with a linearly frequency-swept signal are presented. As a testing target various spheres from different materials and sizes were used. These results should lead to better identification of the buried object.
Źródło:: Metrology and Measurement Systems; 2011, 18, 1; 57-67
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Control of complex dynamic nonlinear loading process for electromagnetic mill
Autorzy:: Ogonowski, Szymon
Bismor, Dariusz
Ogonowski, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/229680.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: predictive control
pole placement
nonlinear dynamics
neural modelling
electromagnetic mill
Opis:: Electromagnetic mill installation for dry grinding represents a complex dynamical system that requires specially designed control system. The paper presents model-based predictive control which locates closed loop poles in arbitrary places. The controller performs as gains cheduling prototype where nonlinear model – artificial recurrent neural network, is parameterized with additional measurements and serves as a basis for local linear approximation. Application of such a concept to control electromagnetic mill load allows for stable performance of the installation and assures fulfilment of the product quality as well as the optimization of the energy consumption.
Źródło:: Archives of Control Sciences; 2020, 30, 3; 471-500
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A reliability-operational analysis of a track-side CCTV cabinet taking into account interference
Autorzy:: Paś, Jacek
Rosiński, Adam
Białek, Kamil
Powiązania:: https://bibliotekanauki.pl/articles/2128147.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: operation
reliability
electromagnetic interference
modelling
closed circuit television
CCTV
operacja
niezawodność
interferencja elektromagnetyczna
modelowanie
telewizja przemysłowa
Opis:: The paper presents issues associated with the impact of electromagnetic interference on track-side cabinets of a closed-circuit television system (CCTV) functioning in a railway transport environment. The measurements of an electromagnetic field emitted by a track-side CCTV cabinet were presented. Designs of this kind are operated in railway facilities; therefore, they should not disturb the functioning of other equipment, the rail traffic control systems, in particular (so-called inner compatibility). An analysis of the obtained results enabled developing a research model, and a further reliability and operational analysis, taking into account electromagnetic interference. This enabled determining a relationship allowing the determination of the probability of a track-side CCTV cabinet staying in a state of full ability. The presented discussions regarding a track-side CCTV cabinet, taking into account electromagnetic interference, allow for the numerical assessment of different types of solutions (technical and organizational), which can be implemented in order to mitigate the impact of electromagnetic interference on a system’s functioning.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; e136747, 1--11
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Modelling Liquid Steel Motion Caused by Electromagnetic Stirring in Continuous Casting Steel Process
Modelowanie ruchów ciekłej stali wywołane mieszaniem elektromagnetycznym w procesie ciągłego odlewania
Autorzy:: Rywotycki, M.
Malinowski, Z.
Giełżecki, J.
Gołdasz, A.
Powiązania:: https://bibliotekanauki.pl/articles/355391.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: continuous casting
electromagnetic stirring
numerical modelling
finite elements method
odlewanie ciągłe
mieszanie elektromagnetyczne
modelowanie numeryczne
metoda elementów skończonych
Opis:: The paper presents an attempt of modelling liquid steel motion triggered off by electromagnetic stirring. Steel viscosity was calculated on the basis of temperature field determined with the use of stationary heat conduction equation. Velocity field was determined using Navier-Stokes equations and stream continuity equation. Solution was obtained using the finite element method. The developed model allows to carry out quick simulating calculations of fluid flow. Stationary solution was employed, and this allowed to reduce computation time substantially.
W pracy podjęto próbę modelowania ruchu ciekłej stali wywołanej mieszaniem elektromagnetycznym. Lepkość stali obliczano na podstawie pola temperatury wyznaczonego ze stacjonarnego równania przewodzenia ciepła. Pole prędkości wyznaczono korzystając z równań Naviera-Stokesa i równania ciągłości strugi. Rozwiązanie uzyskano metodą elementów skończonych. Opracowany model pozwala na wykonywanie szybkich obliczeń symulacyjnych ruchów ciekłej stali. Zastosowano rozwiązanie stacjonarne, co umożliwiło istotne skrócenie czasu obliczeń.
Źródło:: Archives of Metallurgy and Materials; 2014, 59, 2; 487-492
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Coupling electromagnetic (FE) models to multidomain simulator to analyse eletrical drives and complex control systems
Autorzy:: Jagieła, M.
Garbiec, T.
Powiązania:: https://bibliotekanauki.pl/articles/141422.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: symulacja wspólna
napęd elektryczny
modelowanie matematyczne
metoda elementów skończonych
co-simulation
electrical drives
electromagnetic systems
mathematical modelling
finite element method
Opis:: This work presents the co-simulation approach to the analysis of control systems containing detailed models of electromagnetic and electromechanical converters. In this method of analysis the attention is paid to the whole system and not only to its electromagnetic part. The latter is described by equations resulted from the two-dimensional finite element discretisation of the Maxwell equations, and is coupled weakly with the remaining part of the system. The simulation is carried out in Matlab/Simulink environment wherein the coupling is realised through the S-function. Example results regarding simulation of the operation of the control system of an electrical machine and the operation of a power electronic converter are presented and compared with available reference data.
Źródło:: Archives of Electrical Engineering; 2010, 59, 3-4; 189-201
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Modelling of non-linear losses in an integrated contactless power supply for magnetically levitated elevator systems using discrete circuit elements
Autorzy:: Putri, A. K.
Appunn, R.
Hameyer, K.
Powiązania:: https://bibliotekanauki.pl/articles/141742.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: contactless energy transmission
electromagnetic guiding system
equivalent circuit model
ferromagnetic material at high frequency
magnetically levitated elevator
modelling of non-linear losses
Opis:: A contactless energy transmission system is essential to supply onboard systems of electromagnetically levitated vehicles without physical contact to the guide rail. One of the possibilities to realise a contactless power supply (CPS) is by integrating the primary actuator into the guide rail of an electromagnetic guiding system (MGS). The secondary actuator is mounted on the elevator car. During the energy transmission, load dependent non-linear losses occur in the guide rail. The additional losses, which are caused by the leakage flux penetrating into the guide rail, cannot be modelled using the classical approach of iron losses in the equivalent circuit of a transformer, which is a constant parallel resistance to the mutual inductance. This paper introduces an approach for modelling the load dependent non-linear losses occurring in the guide rail using additional variable discrete circuit elements.
Źródło:: Archives of Electrical Engineering; 2015, 64, 2; 177-187
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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