|
|
Theoretical - practical view of the levitation of the lifter
Buday, Matej ; Bartlová, Milada (referee) ; Zdražil, Vladimír (advisor)
Levitation and its effects becomes a huge trend of modern physics. It is very important to be accurate and patient in the research. Representative of the theory, which we are examining, is a lifter and its levitation in electrostatic field. Air ionization is produced by high voltage connected to the lifter’s electrodes and a beam of plasma will surround a thin wire electrode. The levitation effect will appear, if there is right magnitude of electric field intensity and right method of lifter construction.
|
|
|
Electrodynamic magnetic bearing design
Pavluš, Ondřej ; Janda, Marcel (referee) ; Rúra, Dávid (advisor)
High speed applications demands with a need for lower energy consumption lead to designing new types of bearings. In the last decades magnetic bearing, which would be able to obtain passive stable levitation using regular materials at room temperature, has been searched. This has lead to development of electrodynamic bearing based on eddy currents principle. Currently the electrodynamic bearings are still not fully explored and further research is needed. The aim of the work is to describe the theory about modern magnetic bearing, analysis and design of electrodynamic bearing according to given parameters. The finite element method is used for further analysis and evaluate behaviour of its properties.
|
|
| |
|
|
Electrodynamic magnetic bearing design
Pavluš, Ondřej ; Janda, Marcel (referee) ; Rúra, Dávid (advisor)
High speed applications demands with a need for lower energy consumption lead to designing new types of bearings. In the last decades magnetic bearing, which would be able to obtain passive stable levitation using regular materials at room temperature, has been searched. This has lead to development of electrodynamic bearing based on eddy currents principle. Currently the electrodynamic bearings are still not fully explored and further research is needed. The aim of the work is to describe the theory about modern magnetic bearing, analysis and design of electrodynamic bearing according to given parameters. The finite element method is used for further analysis and evaluate behaviour of its properties.
|
|
|
Magnetic Levitation Device
Zedka, Radim
This paper brings some general knowledge about magnetic levitation devices used for aesthetic and entertainment purposes. Two major principles are discussed while their advantages and disadvantages are pointed out. A new principal of hanging-type levitation device is constructed where permanent magnets are implemented into closed-loop magnetic system for lower power consumption. The function of control system is described and power consumption measurements are done.
|
|
|
Proposal of ultrasonic trap
Bartoň, Petr ; Pavlů, Jiří (advisor) ; Vyšinka, Marek (referee)
Light scattering by dust grains is a complex problem when the size of the grain is about the wavelength of incident light. The Mie theory is often used to characterize such situtation, however, most of the materials lacks knowledge of neccessary material constants. Moreover, solution of Mie equations for general shapes is difficult and partly not known. Objective of this work is development of apparatus for light scattering measurements on small (micrometer ranged) ar- bitrary shaped dust grains levitating in the ultrasonic field. Trap parameters are obtained by survey of literature and by numeric simulations leading to design of reliable ultrasonic levitator including optical system. The results enable manu- facturing and completion of such apparatus. Eventually, this work can serve as guide "how to design ultrasonic levitator".
|
|
|
Magnetic levitation
Štěpánek,B. ; Paleček,M.
The paper deals with magnetism and its influence on superconducting materials. We describe the discovery and development of superconductivity, superconducting levitation and its use in future technology - called. MAGLEV speed trains. We show the interaction of the magnetic field of a strong neodymium magnet and high-temperature superconductor, cooled with liquid nitrogen at about -200 ° C. Of superconductors at this temperature becomes perfect diamagnetic material. That is ejected from the magnetic field and therefore float above the magnets. The result of our research should be making a track simulating high-speed trains on the principle MAGLEV. In the first stage to select the appropriate arrangement of "rails" of the magnets, then make a final model train.
|
|
| |
|
|
Theoretical - practical view of the levitation of the lifter
Buday, Matej ; Bartlová, Milada (referee) ; Zdražil, Vladimír (advisor)
Levitation and its effects becomes a huge trend of modern physics. It is very important to be accurate and patient in the research. Representative of the theory, which we are examining, is a lifter and its levitation in electrostatic field. Air ionization is produced by high voltage connected to the lifter’s electrodes and a beam of plasma will surround a thin wire electrode. The levitation effect will appear, if there is right magnitude of electric field intensity and right method of lifter construction.
|
guest ::
