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Relevant bibliographies by topics / Magnetická levitace / Dissertations / Theses

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Dissertations / Theses on the topic 'Magnetická levitace'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Šindelář, Petr. "Návrh hybridního magnetického ložiska." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-443089.

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The thesis deals with the design of a hybrid magnetic bearing. This is an extension of the issue of common bearings in high-speed motors. The work is divided into three parts. A general theory of magnetic bearings is described in the first part. The second part deals with the mathematical description of the bearing. A proposal of specific hybrid magnetic bearing is described in the third part. The bearing for the motor was already designed. It is a 45000rpm motor with a power output of 12 kW. This thesis aims to create a design of hybrid magnetic bearing with magnets to create a permanent magn

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2

Jančuš, Rastislav. "Magneticky levitující vozítko." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220903.

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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 rea

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3

Coppock, Joyce Elizabeth. "Optical and Magnetic Measurements of a Levitated, Gyroscopically Stabilized Graphene Nanoplatelet." Thesis, University of Maryland, College Park, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10641221.

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<p> I discuss the design and operation of a system for levitating a charged, μm-scale, multilayer graphene nanoplatelet in a quadrupole electric field trap in high vacuum. Levitation decouples the platelet from its environment and enables sensitive mechanical and magnetic measurements. </p><p> First, I describe a method of generating and trapping the nanoplatelets. The platelets are generated via liquid exfoliation of graphite pellets and charged via electrospray ionization. Individual platelets are trapped at a pressure of several hundred mTorr and transferred to a trap in a second chamb

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4

Pavluš, Ondřej. "Návrh elektrodynamického magnetického ložiska." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442790.

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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 give

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5

Craig, David. "Modeling and Control of a Magnetically Levitated Microrobotic System." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2844.

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Magnetically levitated microrobotic systems have shown a great deal of promise for micromanipulation tasks. A new large-gap magnetic suspension system has recently been developed at the University of Waterloo in order to develop microrobotic systems for various applications. In order to achieve motion with the system, a model is needed in order to facilitate the design of various aspects of the system, such as the microrobot and the controller. In order to derive equations of motion for the system attempts were made to characterize the force produced by the magnetic drive unit in t

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6

Verma, Shobhit. "Development of novel high-performance six-axis magnetically levitated instruments for nanoscale applications." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/2602.

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This dissertation presents two novel 6-axis magnetic-levitation (maglev) stages that are capable of nanoscale positioning. These stages have very simple and compact structure that is advantageous to meet requirements in the next-generation nanomanufacturing. The 6-axis motion generation is accomplished by the minimum number of actuators and sensors. The first-generation maglev stage is capable of generating translation of 300 ??m in x, y and z, and rotation of 3 mrad about the three orthogonal axes. The stage demonstrates position resolution better than 5 nm rms and position noise less than 2

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7

Blumber, Eric Joseph. "Testing of a Magnetically Levitated Rocket Thrust Measurement System Demonstrator for NASA." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/33753.

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Existing thrust measurement systems (TMSs) at NASA Stennis Space Center use strain gauges and flux plates to measure forces produced by a test article. Alignment and calibration can take two weeks or more every time a piece of hardware or test article is changed. Cross axis loading is also problematic because it is impossible to perfectly align the flex plates and strain gauges in the thrust direction. In response to these problems, a magnetically levitated thrust measurement system has been proposed and a 300lb capacity demonstrator has been designed and built. In this design, the magneti

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8

Huo, Yunlong. "Finite element modeling of internal flow and stability of droplets levitated in electric and magnetic fields." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Dissertations/Summer2005/y%5Fhuo%5F083005.pdf.

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9

Kascak, Peter Eugene. "Fully Levitated Rotor Magnetically Suspended by Two Pole-Pair Separated Conical Motors." Case Western Reserve University School of Graduate Studies / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1278530250.

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10

Bergmann, Ryan M. "Characterization of low-frequency electric potential oscillations near the edge of a plasma confined by a levitated magnetic dipole." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53240.

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Thesis (S.M. and S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 95-96).<br>A vertically adjustable electrostatic probe array was made to observe the previously seen low-frequency angular oscillations in LDX and identify if they are related to computationally expected convective cells. The array rests one meter from the centerline and measures edge fluctuations at field lines near the separatrix. It spans ninety degrees and has 24 probes mounted on it for total prob

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11

Hessling, Oscar. "Influence of Oxygen Partial Pressure on the Droplet Shape of Stainless Steel Using Levitated Droplet Method." Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199668.

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An induction setup for levitation studies of molten metals was built. The setup was used to levitate and heat stainless steel samples of 2.00 g to 1600 °C and subject them to different atmospheres. Changes in shape and temperature were recorded by video and infrared thermocouple. Oxide films forming on the droplets during levitation were observed. It was possible to notice an immediate surface reaction when the reaction gas was introduced. This reaction is concluded to influence the surface and bulk composition, and therefore have an effect on the shape evolution of the droplet. A more oxidizi

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12

Ferreira, Jossana Maria de Souza. "Modelagem de m?quina de indu??o trif?sica sem mancais com bobinado dividido." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15258.

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Made available in DSpace on 2014-12-17T14:55:23Z (GMT). No. of bitstreams: 1 JossanaMSF.pdf: 3270599 bytes, checksum: 40178fe964bc435931b6916c9599f55a (MD5) Previous issue date: 2006-11-10<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>This work presents a model of bearingless induction machine with divided winding. The main goal is to obtain a machine model to use a simpler control system as used in conventional induction machine and to know its behavior. The same strategies used in conventional machines were used to reach the bearingless induction machine model, which ha

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13

Chiang, Chung-Ying, and 江重瑩. "Design and Implementation of Magnetic Levitated Transportation System." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/48905285204076990592.

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碩士<br>國立成功大學<br>航空太空工程學系<br>86<br>The tendency of accurately industrial technique has been developedfrom contact kinematic mechanism to noncontact kinematic mechanism.Generally, it can meliorate efficiency of machine and be energy-saving.In 1980''s, the magnetic material developed quickly, and permanentmagnet can raise magnetic flux density greatly. Thus it can change thetraditional conditions. Magnetic technique has many advantages. It is not only noncontact but also suits to use in speci

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14

Lin, Keng-Hsien, and 林耿賢. "Simulation and Controller Design of Magnetic-levitated Platform System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/ajqkj6.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>92<br>High technology develops continuously. So the precision of semiconductor must promote continuously especially. This makes the requirement for ducting off from semiconductor foundry increases constantly. The thesis to this industrial trend has developed the intelligent hybrid control of the level magnetism float system. The goal is that using the intelligent hybrid control method to reach the task of orientation in the Magnetic-levitated system. Because in the Magnetic-levitated system, any magnetic object is all unable to get a steady state in the static magne

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15

Hou, Hsin Li, and 侯信利. "Design of Levitation Control System for Magnetic Levitated Transport." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/qpqya2.

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碩士<br>南台科技大學<br>電機工程系<br>90<br>High performance of clean room is necessary in order to produce high density of integrated circuit. Microscopic dust motes are mainly produced by personal entrance and semiconductor equipment. The bigger and bigger wafers are too weak to being manually moved. It is necessary to develop an automatic material transportation system among the manufacturing process in order to overcome the difficulty. The paper concerns with the research of the automatic material transportation system for semiconductor manufacturing application using magnetic suspension technology and

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16

Wang, Frank, and 王智賢. "Design of Two-Dimensional Magnetic-Levitated Platform Simulation System." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/03650148295017196230.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>90<br>This thesis is one of the sub-projects of the main project “Intelligent Hybrid Control for Two-Dimensional Magnetic-Levitated Platform”. The surge of high-tech industry, especially the continuous progress in the area of IC manufacturing, has posed a serious demand on the positioning precision for process equipment. In react to the demand from industries, this project focuses its research on the intelligent hybrid control for two-dimensional magnetic-levitated platform. The emphases of the proposed system are on the embedded/mechatronic system structure and the

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17

Huang, Tai-Yuan, and 黃泰淵. "Study and Implementation of Magnetic-Levitated Capsule Endoscope Control System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/03411697195351868860.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>92<br>So far general electronical stomach endoscope examination often make patients feel unwell and fearful, and wireless capsule endoscope can''t observe single region of stomach repeatedly to examinate stomach clearly like electronical endoscope. In order to solve the problems of those endoscopes discussed above, this paper presents a new beter endoscope examination system named Megnetic-Levitated Capsule Endoscope Control System and related experiments. The purpose of this paper to develop a confortable, convenient, and effective endoscope examination method.

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18

Wu, Cheng-Ju, and 吳政儒. "PWM Power Amplifier and Variable Structure Controller Design for Magnetic-Levitated Platform System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/02748306509241915465.

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碩士<br>中原大學<br>機械工程研究所<br>95<br>In recent years, the active magnets suspended platforms are often seen in the mechanism that designed for high-speed, high position precision or low friction, such as micro/nano linear stages, especially. This research was aimed at the controller design for a five degree-of-freedom magnetic levitated platform. The magnetic levitated platform system basically is an unstable system, it is not only a highly nonlinear system, also is a dynamic coupled system. Furthermore, there are four actuators and only three controlled factors in the vertical position of the plat

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19

Shevale, Pramod Anandrao. "Quantification of Dynamic Parameters of Flexible Rotor Partially Levitated on Active Magnetic Bearing." Thesis, 2016. http://ethesis.nitrkl.ac.in/8555/1/2016_MT_214ID1277_Pramod_Anandrao_Shevale.pdf.

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An unavoidable fault that generally present in the rotor system is residual unbalance, and plenty of research has been carried out to develop off-line balancing techniques in the past. But, as present industrial need is moving towards a very high speed (supercritical) and light weight drivelines, it is important to use on-line balancing techniques instead of off-line balancing. Therefore, present work is focused on the on-linebalancing of a rotor system by estimating the distributed unbalance parameters with the help of active magnetic bearings (AMBs). The flexible rotor model having helically

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20

Ramchandran, Ashok. "A method for controlling and stabilizing the pitch-axis dynamics of a magnetically levitated train." Thesis, 1990. http://hdl.handle.net/1957/37561.

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An electro-dynamic Magnetic Levitation vehicular system has been modelled and studied. In practice, a MagLev vehicle will consist of a number of cars which are mechanically coupled to each other. It is reasonable to assume that each of these cars will be independently controlled with the help of a supervisory controller. This thesis deals with the control aspects of one such car. The car is equipped with two control magnets one at the front end and the other at the rear end. The currents in these magnets can be varied to provide levitation and pitch-axis control. The rotational aspects of the

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