Temat: magnetic levitation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Stability test of Hyperloop vehicle in different movement conditions
Autorzy:: Kowalik, Rafał
Kisilowski, Jerzy
Łusiak, Tomasz
Gil, Leszek
Powiązania:: https://bibliotekanauki.pl/articles/27312782.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: stability
hyperloop vehicle
magnetic levitation
Opis:: The guide of the Hyperloop system in the paper is mathematically represented as a continuous system along which the force from the capsule travels, with the capsule in turn represented as a discrete system. The simulations discussed in the article were used to determine the displacements of the magnet elements. ANSYS software was used to perform the simulations using finite element calculations (FEM). The stability of the capsule will be determined from the results of the displacements present in the system. Taking into account the existing conditions in the magnet and guide assembly system, the simulation results were used to analyse stability in technical and stochastic terms (Lyapunov criteria) for non-linear systems. In the technical stochastic stability analysis, the transverse displacements of the electromagnets were used. The probability of unstable Hyperloop motion was then calculated.
Źródło:: Eksploatacja i Niezawodność; 2023, 25, 3; art. no. 169204
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Flight path optimization of an aircraft aided during take-off by maglev system
Autorzy:: Majka, A.
Powiązania:: https://bibliotekanauki.pl/articles/245029.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: air transport
magnetic levitation
trajectory optimization
Opis:: Very high air traffic density in the largest airports and in their vicinity involves that the air traffic in the largest airports and their areas of operations approaches the capacity limits. Such high density of the air traffic adversely influences the natural environment in the vicinity of the airports due to the increasing cumulative noise level and the concentration of environmentally hazardous substances. One of the possibilities to improve the situation is to work out innovative solutions aimed at decreasing the aircraft pollution and improving the transport effectiveness. One of the major concepts is using magnetic levitation (MAGLEV) technology to support aircraft take-off and landing. If the aircraft could take-off and start the initial climb phase with the ground power, the installed power may be reduced, resulting in less weight, less drag and less overall fuel consumption which leads to emission reduction. These advantages, the lower fuel consumption and emissions, increase sustainability of the transportation system. Different conditions of the take-off give possibilities to shape the trajectory after the take-off in order to decrease the negative influence on the environment. The aim of the present work was to determine the optimal conditions of the take-off and the optimal climb trajectory of the aircraft aided in the ground phase of the take-off by the system using the MAGLEV technology, minimizing the fuel consumption. The simplified algorithm of optimization of the flight trajectory was used in this work; it uses the method of approximation of the flight path by the third degree polynomial.
Źródło:: Journal of KONES; 2013, 20, 2; 261-268
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: A novel control-rod drive mechanism via electromagnetic levitation in MNSR
Autorzy:: Divandari, M.
Hashemi-Tilehnoee, M.
Khaleghi, M.
Hosseinkhah, M.
Powiązania:: https://bibliotekanauki.pl/articles/147631.pdf
Data publikacji:: 2014
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: magnetic levitation system
nuclear reactor
state feedback
tracking
Opis:: In this paper, an electromagnetic levitation system was used with a synchronous motor to navigate the control rod of a small-type research reactor. The result from this prototype magnetic levitation system was in agreement with simulation results. The control system was programmed in MATLAB through open-loop system, closed-loop with state feedback and closed-loop with state feedback integral tracking. The final control system showed the highest performance with a low positioning error. Our results showed that the developed control system has the potential to be used as a reliable actuator in nuclear reactors to satisfy higher performance and safety.
Źródło:: Nukleonika; 2014, 59, 2; 73-79
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Evaluation of the required ground power of a ground - based system for support of the aircraft safe take - off and landing
Autorzy:: Majka, A.
Powiązania:: https://bibliotekanauki.pl/articles/242165.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: air transport
take-off and landing
magnetic levitation
Opis:: Among the most important problems faced by the air transport today there can be mentioned some negative influences of aircraft and airports on the environment and the increasing costs of air transport. One of the possibilities to improve the situation is to work out innovative solutions aimed at decreasing of the aircraft pollution and improving the transport effectiveness. Among the most innovative ideas is the use of magnetic levitation to aid the take-off and landing of the transport aircraft. The use of the aiding system will bring a lot of benefits, however, regarding its innovative character and the problems connected with it, the idea can have been realized in a couple of years or even decades. The aim of this work was to carry out the analysis of the change to the required thrust of the transport aircraft in the take-off, landing and cruise using the system of magnetic levitation. Magnetic levitation or magnetic suspension is a method by which a body floats due to a special quality of magnets. The generated electromagnetic force is used to balance the weight of the object. The current work describes the ways of determining the weights of the main systems of the aircraft with classical construction solutions where the weight of the whole aircraft is estimated on the basis of the statistical methods. It allows determining the weights of all main systems of the aircraft and verifying the results using the known examples. Thanks to this approach, it could be possible to determine the modified aircraft weight more thoroughly, adding the changes in weights of the modified systems.
Źródło:: Journal of KONES; 2012, 19, 4; 411-418
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Enhanced IMC synthesis for tracking control of magnetic levitation system
Autorzy:: Elumalai, V. K.
Subramanian, R. G.
Reddipogu, J. S. D.
Srinivasan, S.
Agrawal, S.
Powiązania:: https://bibliotekanauki.pl/articles/140742.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: IMC
magnetic levitation
time delay
Q-parameterization
robustness
Opis:: This paper presents an enhanced internal model control (EIMC) scheme for a time-delayed second order unstable process, which is subjected to exogenous disturbance and model variations. Even though the conventional internal model control (IMC) can provide an asymptotic tracking response with desired stability margins, the major limitation of conventional IMC is that it cannot be applied for an unstable system because a small exogenous disturbance can trigger the control signal to grow unbounded. Hence, modifying the conventional IMC structure to guarantee the internal stability, we present an EIMC scheme which can offer better trade-off between setpoint tracking and disturbance rejection characteristics. To improve the load disturbance rejection characteristics and attenuate the effect of sensor noise, we solve the selection of controller gains as an H∞ optimization problem. One of the key aspects of the EIMC scheme is that the robustness of the closed loop system can be tuned via a single tuning parameter. The performance of the EIMC scheme is experimentally assessed on a magnetic levitation plant for reference tracking application. Experimental results substantiate that the EIMC scheme can effectively counteract the inherent time delay in the model and offer precise tracking, even in the presence of exogenous disturbance. Moreover, by comparing the trajectory tracking performance of EIMC with that of the proportional integral velocity (PIV) controller through cumulative power spectral density (CPSD) of the tracking error, we show that the EIMC can offer better low frequency servo response with minimal vibrations.
Źródło:: Archives of Electrical Engineering; 2018, 67, 2; 293--306
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Determination of inductance matrixes of bearingless electric motor for magnetic levitation
Wyznaczanie parametrów macierzy indukcyjności bezłożyskowego silnika elektrycznego
Autorzy:: Falkowski, K.
Henzel, M.
Powiązania:: https://bibliotekanauki.pl/articles/276809.pdf
Data publikacji:: 2013
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: silnik bezłożyskowy
lewitacja magnetyczna
bearingless motor
magnetic levitation
induction
Opis:: The paper deals with mathematical and experimental analysis of induction in bearingless electric motor. The motor are used magnetic levitation phenomenon to bearing of the rotor. In stator are implemented two winding groups. These are bearing and motor windings. In the paper are presented the mathematical model of windings and the experimental results of induction parameter measurements.
Prowadzone obecnie w WAT prace badawcze stanowią odpowiedź na rozwój technologii More Electric Aircraft. W artykule przedstawiono wyniki analizy matematycznej macierzy indukcyjności dla bezłożyskowych silników dwu i trójfazowych. Uzyskane podczas tej analizy wyniki zostały zwerynkowane podczas badań laboratoryjnych. W tym celu dokonano pomiarów elektrycznych statorów obu silników oraz parametrów indukcyjności w funkcji szczeliny powietrznej.
Źródło:: Pomiary Automatyka Robotyka; 2013, 17, 2; 503-507
1427-9126
Pojawia się w:: Pomiary Automatyka Robotyka
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Minimum emission unconventional MAGLEV assisted take-off
Autorzy:: Majka, A.
Powiązania:: https://bibliotekanauki.pl/articles/246124.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: air transport
green trajectory
take-off
aircraft emission
magnetic levitation
Opis:: Among the most important problems faced by the air transport today there can be mentioned some negative influences of aircraft and airports on the environment and the increasing costs of air transport. One of the possibilities to improve the situation is to work out innovative solutions aimed at decreasing of the aircraft pollution and improving the transport effectiveness. Among the most innovative ideas is the use of magnetic levitation (MAGLEV) to aid the take-off and landing of the transport aircraft. The “Integrated Ground and on-Board system for Support of the Aircraft Safe Take-off and Landing” – GABRIEL, deals with radically new integration of the MAGLEV technology into the air transportation system that contains aircraft, airport, air traffic control, authority, logistic and operational support, maintenance, etc. GABRIEL idea includes operation of the aircraft without the conventional undercarriage system and using the ground based power and supporting systems for take-offs and landings. In case of using the GABRIEL system as a catapult, the aircraft on the track must be accelerated to the speed permitting to reach the altitude of 300 m or more. Such take-off and climb results in minimum noise and minimal emission of substances harmful for the environment. After reaching the altitude of 300 m, the aircraft may follow its flight with using different flight strategies. Different conditions of the unconventional take-off needs to shape other way the trajectory of the initial stage of the aircraft flight after the lift-off. The aim of the present work was to determine the optimal conditions of the lift-off and the optimal trajectory of the initial climb minimizing the emission. Simplified realization of the Ritz- Galerkin method was used in this work, which uses an approximate solution to boundary value problems for determining the optimal flight trajectory.
Źródło:: Journal of KONES; 2014, 21, 4; 335-342
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: An observer for magnetic levitation system control based on a coefficient diagram method and backstepping
Autorzy:: Haouari, F.
Bali, N.
Tadjine, M.
Boucherit, M. S.
Powiązania:: https://bibliotekanauki.pl/articles/141513.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: backstepping
coefficients diagram method controller
magnetic levitation system
nonlinear observer
Opis:: In this paper, we propose a robust nonlinear control design concept based on a coefficient diagram method and backstepping control, combined with a nonlinear observer for the magnetic levitation system to achieve precise position control in the existence of external disturbance, parameters mismatch with considerable variations and sensor noise in the case, where the full system states are supposed to be unavailable. The observer converges exponentially and leads to good estimate as well as a good track of the steel ball position with the reference trajectory. A simulation results are provided to show the excellent performance of the designed controller.
Źródło:: Archives of Electrical Engineering; 2018, 67, 2; 403--417
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Możliwości zastosowania nadprzewodnictwa
Possibilities of using superconductivity
Autorzy:: Cieśla, A.
Kraszewski, W.
Skowron, M.
Powiązania:: https://bibliotekanauki.pl/articles/154191.pdf
Data publikacji:: 2007
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: materiały nadprzewodnikowe
separacja magnetyczna
elektroenergetyka
materials superconductors
magnetic separation
electrical power engineering
magnetic levitation
Opis:: Nadprzewodnictwo, odkryte w 1911 roku przez Kamerling Onnesa, może znaleźć liczne zastosowania. W Katedrze Elektrotechniki prowadzone są prace teoretyczne i eksperymentalne nad wykorzystaniem tego zjawiska. W niniejszym artykule zostaną one krótko zaprezentowane.
Superconductivity, discovered in 1911 by Kamerling Onnes, can be use in many practical applications. In Department of Electrical Engineering, basic and applied research are been conducting for utilization this effect, what is presented in this article.
Źródło:: Pomiary Automatyka Kontrola; 2007, R. 53, nr 3, 3; 95-101
0032-4140
Pojawia się w:: Pomiary Automatyka Kontrola
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Pomiary i sterowanie w dydaktycznym modelu lewitacji magnetycznej
Sensing and control in didactic unit of magnetic levitation
Autorzy:: Bączyk, R.
Lewandowski, D.
Pluciński, P.
Powiązania:: https://bibliotekanauki.pl/articles/276544.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: lewitacja magnetyczna
sensory położenia
stanowisko dydaktyczne
magnetic levitation
distance sensors
didactic unit
Opis:: Przedmiotem referatu jest konstrukcja oraz analiza systemu magnetycznej lewitacji. Na całość pracy składa się wykonane urządzenie umożliwiające stabilizację unoszonego przedmiotu oraz model symulacyjny. Zaprojektowane i wykonane urządzenie zapewnia sterowanie prądem elektromagnesu w wewnętrznej pętli regulacji oraz położeniem unoszonego przedmiotu - w pętli zewnętrznej. Ponadto sterownik komunikuje się z aplikacją uruchamianą na komputerze PC, która nadzoruje pracę sterownika. Na urządzeniu zamontowano i przebadano trzy różne sensory położenia lewitującego obiektu.
The subject of this paper is the design and analysis of magnetic levitation system. The whole work consists of the simulation model and constructed device enabling stabilization of the levitating object. Designed and built device provides a current control of the electromagnet in the inner loop and the position control of the object lifted - in the outer control loop. In addition, the controller communicates with the application that runs on a PC, which supervise the work of the driver. On the device are mounted and tested three different position sensors.
Źródło:: Pomiary Automatyka Robotyka; 2012, 16, 2; 456-462
1427-9126
Pojawia się w:: Pomiary Automatyka Robotyka
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "magnetic levitation" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język