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Design of DC electromagnet
Mayer, Aleš ; Bušov, Bohuslav (referee) ; Šimek, David (advisor)
This bachelor thesis deals with electromagnets and measurements on them. There is described the history of discovery of electromagnets, the principle of operation, their construction, and classification according to various criteria. More detailed descriptions of individual basic types are presented. The method of deriving the tensile force calculation is explained for DC as well as for AC electromagnets. There is a detailed description of the design process of a core DC electromagnet, which is then simulated in the FEMM program, and a 3D model with technical documentation is created in the Inventor program. The part also deals with measurement on electromagnets. More precisely, it is a measurement of static and dynamic tensile characteristics, measurement of electromagnets temperature rise. In the next part, transient phenomena and their measurements are explained, namely inrush current and switching overvoltage.
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Electronic Xylophone
Čížek, Petr ; Vojáček, Zdeněk (referee) ; Marada, Tomáš (advisor)
The aim of this bachelor thesis is to design and create a working electronic xylophone which could be controlled by a programmable logic controller or by an Arduino based board. The finished xylophone could be used for promotional purposes of the faculty.
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Design of electromagnet for handling the load
Mišún, Filip ; Vetiška, Jan (referee) ; Huzlík, Rostislav (advisor)
Goal of this bachelor thesis is to design an electro-permanent magnetic end effector for robotic manipulator, which allows manipulation with mostly metal plates of small thickness. Elaboration is divided into several sections. At the beginning are elaborated basic principles of electromagnetism, followed by short literary research about handling effectors. Next part proposes my own solution. In the last part, manufacturing is described and real properties of electro-permanent magnet are measured.
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Characterization of two-dimensional electromagnet
Kimák, Jozef ; Němec, Petr (advisor) ; Olejník, Kamil (referee)
Abstract:In this work we studied magnetic field magnitude and direction ge- nerated by a prototype of 2-dimensional electromagnet, which was recently cons- tructed in Laboratory of the OptoSpintronics. This electromagnet is formed by two pairs of coils with a mutually perpendicular position of their poles. In parti- cular, we revealed that, by appropriately setting the current through the coils, it is possible to rotate reproducibly the field direction in the plane of the poles for the field magnitude of about 200 mT. We also observed that the generated field is rather homogeneous in a region with a radius of about 5 mm, which corresponds to a typical sample size. On the other hand, the functionality of the electromag- net at lower fields could not be tested unambiguously due to technical problems with a home-made detection Hall probes. This problem will be addressed in the following work. 1
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Cell labeling with magnetic particles
Kukhta, Dziyana ; Janoušek, Oto (referee) ; Čmiel, Vratislav (advisor)
This bachelor thesis describes the movement of cells labelled with magnetic nanoparticles in the magnetic field in the direction of the magnet. First, it describes two types of magnets: permanent magnet and electromagnet. Then, it is dedicated to magnetic field sensors, magnetic nanoparticles and their incorporation in cells, optical systems for detecting cell movement and the effect of electromagnetic fields on cells. The practical part is dedicated to the incorporation of nanoparticles in cells, the measurement of the magnetic field intensity of a neodymium magnet and an electromagnet, and the methods of electromagnet control. It also describes the effect of electromagnetic fields on fibroblasts and the concentration of nanoparticles on the ability of the labelled cells to react to a magnetic field. The last part is dedicated to the production of a flow chamber, the analysis of the movement of cells in the chamber and the subsequent capture of cells in various magnetic fields.
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Magnetic separation
Balatý, Tomáš ; Brožek, Milan (advisor) ; Hrabě, Petr (referee)
The aim of the thesis was to gather information about magnetism, magnets and principles used in magnetic separation. The key point of this thesis was to assess the efficacy of an experimental magnetic separation operation. The first chapter is devoted to the introduction, which is a brief description of the problems of magnetic separation. The second chapter describes the current state of the problem, which explains the basic definitions and phenomena arising from the use of permanent magnets or electromagnets. Furthermore, this chapter describes in detail the magnetic separation. The third chapter is devoted to the work goals and methods of processing. The fourth chapter describes an experiment that was conducted to determine the effectiveness of a magnetic separator during the trial operation of transport technology to transport clinker. The last chapter is devoted to conclusions and contribution of this thesis.
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Electromagnetic chuck system
Haratek, Jiří ; Mach, Martin (referee) ; Cipín, Radoslav (advisor)
The aim of this bachelor thesis is proposal of one segment of electromagnetic chuck system. In the theoretical section, we introduce the principle function of chuck systems with permanent magnets, electromagnets and their combinations. The main part focuses on the calculation of the holding force of electromagnetic chuck system with a combination of permanent magnets and electromagnets and verification using finite element method created in the simulation environment FEMM. The aim of assignment is also a practical design of the proposed system.
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Design and analysis of electromagnet
Macek, Pavel ; Skalka, Miroslav (referee) ; Vítek, Ondřej (advisor)
This work deals with a proposal and an analysis of electromagnets. The first chapter is an introduction into solve of the problem. In the second chapter there is a general discussion about basic relations of the electromagnetic field. The third chapter is dedicated to the operation principle and construction of electromagnets and is supplemented with their common classification. The fourth chapter introduces the Finite Element Method and the FEMM programm. The fifth chapter is dedicated to the analysis of the DC electromagnet, the sixth chapter analysis single-phase AC electromagnet. In the seventh chapter there is a review of results of general analysis of both electromagnets.
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Calculation of DC electromagnet and its experimental verification
Steidl, Adam ; Vetiška, Vojtěch (referee) ; Valenta, Jiří (advisor)
Content of this thesis deals with electromagnets as operating elements in electric machines. Thesis is divided in two main parts, theoretical and practical. The theoretical part describes electromagnets as an electric machine, usage of electromagnets in electrical devices as operating element. Electromagnets are further divided in groups on the basis of different criteria. Next, the theory of electromagnetic fields and methods of assesment of static pull and dynamic characteristics are described. Construction and function analysis of researched type of electromagnet from OEZ company with permanent magnets, which serves as trigger in compact circuit breaker, is also included in this part. Practical part includes measurement of force quantities of an electromagnet in different operating states and its evaluation. For analysis of dynamic quantities with finite element method was created suitable three-dimensional model of electromgnet. Model is used for simulation ofdifferent operating states.The last part describes measurement of dynamic characteristics of the electromganetic system. This part is closed with comparation of results.
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