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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.
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Magnetically levitated cart
Jančuš, Rastislav ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
Diploma thesis is summarizing common theoretical knowledge about permanent magnets and electromagnetism. Represent DC electromagnet as basic part for levitated high-speed train. Work is analyzing basics under cart and principles used for magnetic levitation in high-speed transportation. Second practice part including projecting construction levitated cart and analyzing acquired mathematical model of electromagnet. Work is analyzing process for projecting control for side electromagnets and realization real model, including tuning computer communication with states of sensors and comparison real model with model simulated in program Simulink.
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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.
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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".
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Magnetically levitated cart
Jančuš, Rastislav ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
Diploma thesis is summarizing common theoretical knowledge about permanent magnets and electromagnetism. Represent DC electromagnet as basic part for levitated high-speed train. Work is analyzing basics under cart and principles used for magnetic levitation in high-speed transportation. Second practice part including projecting construction levitated cart and analyzing acquired mathematical model of electromagnet. Work is analyzing process for projecting control for side electromagnets and realization real model, including tuning computer communication with states of sensors and comparison real model with model simulated in program Simulink.
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