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Production design of the plug holder
Janoška, Lukáš ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The bachelor thesis is focused on the production of a socket holder for towing devices. The chosen material is mild steel 11 321, which will be subsequently galvanized. The component will be manufactured from 2 mm thick coils of sheet metal in a total production of 100,000 pieces/year. Of the production variants considere, the technology of cutting and bending in a combined tool was chosen. The whole component will be manufactured in four steps with an overall material availability of 89,35 %. A total forming force of 530 kN is required for production. The design of the tool was based on the selected technological process. Mecanica Exacta model DM-S eccentric press from Formetal was chosen as the production machine, which will be subsequently introduced into the automated line.
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Control Electronics for Electromagnetic Ball Accelerator
Dočkal, Tomáš ; Harvánek, Michal (referee) ; Král, Jan (advisor)
The goal of this bachelor's thesis was the design and implementation of an electromagnetic accelerator for a steel ball in a closed circular track. Electromagnetic accelerator serves as a demonstrator of particle accelerator functionality and as a game with the aim of engaging students in the study of electrical engineering. The work includes designing the coil using an algorithm in Matlab, which optimizes parameters to achieve maximum magnetic field intensity while considering limited power loss and voltage. The power electronics were designed and the functionality of the circuit concept was verified through simulation. The printed circuit board (PCB) for the power electronics, which also includes the control unit, was designed in KiCad. The system incorporates both passive and active cooling and is equipped with temperature sensors to ensure safe operation. The control part of the system was designed using the ESP-WROOM-32 development module, which allows for remote control and monitoring via a web interface. Optical sensors were designed to enable precise detection of the ball's position and speed. The mechanical part includes the fabrication of the coil frame and the mounts for the optical sensors using 3D printing. The PCB, along with the power supply, was mounted in a casing.
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Development of laboratory samples for wireless transmission of electric power based on the magnetic induction
Kopečný, David ; Štěpánek, Jaroslav (referee) ; Krbal, Michal (advisor)
The aim of the thesis is to collect the information about wireless transmission by using magnetic induction and about the current solutions of wireless applications in practice. The thesis includes theoretical basis and information about the current state of wireless power applications. This thesis is also focused on physical principle and draft of possible technical solution. On top of that, it also contains the information from some legislative and hygienic regulations. The second aim is draft of laboratory equipment on the base of gained information and its implementation for purpose of teaching and measuring. For this part was chosen topology of circuit and the specifications of resonance circuits. It resulted in producing a preparation, which consists of the exciter, primary circuit, secondary circuit and a module for measuring. The third aim is to take a measurement on this product and evaluation of characteristic from point of view of efficiency. Measured data were integrated into characteristics. The efficiency of transfer was measured depending on distance and used load. At the same time was also observed work frequency of product. Furthemore, another laboratory product was measured, in which was reached the efficiency more than 51%. The thesis is divided into four main chapters, which can be thematically named as follows: the information, the theory, the draft and the measurement. The first two chapters deal with the theory and characterization of technologies of already applied systems mainly from transport. The following two chapters contain the description of proposal of the product and the very measuring of the efficiency.
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Winding diagnostics using surge test
Vojtěch, Pavel ; Šlezingr, Jan (referee) ; Drápela, Jiří (advisor)
Master‘s Thesis deal with analysis given to diagnostic method plus her applicability to failure detection electrical machine plus apparatus in different phases their live. A further realization physical model with subtransient generátor PSG204A 4kV, for teach – in disorder on single – layer air coil plus stator winding induction motor inclusive evaluation results test.
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Electric induction furnaces in foundries
Bruštík, Josef ; Kaňa, Václav (referee) ; Šenberger, Jaroslav (advisor)
The main aim of this Bachelor thesis is to create a technical summary on the topic of “The electric induction furnaces in foundries” and be more closely familiar with this issue. A division of furnaces and ways of melting by particular types of furnaces are briefly described. On the basis of gained knowledge, an evaluation of economic and technical advantages of these melting devices was performed and subsequently it is recommended for further usage in the foundries.
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Electronic RLC meter
Dvořák, Radim ; Hanák, Pavel (referee) ; Lattenberg, Ivo (advisor)
This work deals with measurement methods of passive components R, L ,C used almost in every electrical circuit. Work describes progress of choosing the right methods for measurement and also the process of designing the autonomous RLC meter with use of ATMEL microprocessor chips. The RLC meter will be powered from rechargable battery and will be able to measure primary attributes of RLC components.
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Analysis of concentrated windings of PMSM
Menoušek, Lukáš ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This thesis deals with the design, principles of permanent magnet synchronous machines and an analysis of their properties. As part of the work is done familiarization with the materials of permanent magnets and their arrangement, as well as construction of the engine where they are discussed types of winding machine configuration, types of motors with permanent magnets and the list of implemented solutions. In the next section of this paper is an analysis of the properties of selected types of concentrated winding with a focus on the emergence of harmonics. These data are compared with the model of the engine in the FEMM. Furthermore, a comparison of the calculations of these types of engines and their simulation in RMxprt.
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Metal detector for industrial use
Stehno, Rostislav ; Friedl, Martin (referee) ; Szabó, Zoltán (advisor)
The goal of this project is explore and study the ways of metal detecting and create a metal detector for industrial use. During a project development, the device size and user easy interface were the basic requirement. As a visual device was chosen LCD touch display, which is very important as a user-friendly interface. For math calculations and right function of device will be implemented microcontroller from Atmel corporation. As a data storage will be used a flash memory with 16MB of size. When the device were inventing, a lot of methods were studied and the impulse detect method were chosen which is the most perspective way of metal detecting. Device will communicate with PC trough a USB port. The device will have a battery which allows device to run for a few hours. The prototype of PCB were developed. Few mistakes has been discovered, while the device were constructed, but they were solved successfully.
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Velocity pickup
Konečný, Jan ; Pikula, Stanislav (referee) ; Beneš, Petr (advisor)
This bachelor thesis deals with a proposal of a sensor for measuring relative oscillation of two interacting surfaces. The thesis describes two possible solutions with their advantages and disadvantages, and a patent research. The main part of this bachelor thesis concentrates on inductive position sensor – its attributes and practical proposal.
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Planar Circuits Elements on Low Temperature Cofired Ceramics
Kosina, Petr ; Dřímal, Jiří (referee) ; Kolařík, Vladimír (referee) ; Šandera, Josef (advisor)
The present work deals with the design and manufacturing of 3D structures in LTCC (Low Temperatue Cofired Ceramics) technology. To use this technology LTCC workplaces have been designed and technological processes for high quality reproducible production were suggested. Technological possibilities of low temperature co-fired ceramics were demonstrated in the design and manufacturing of pressure sensors, electrode systems for ozone generators, planar circuit elements (coils and transformers) and in the design a special package for middle-power terahertz modulator. Design of selected parts of respective devices was proved by simulations in COMSOL Multiphysics. The work provides new insights into the structure of power integrated circuits sleeves and structure of electrode systems for different types of electrical discharges. Results of this work can contribute significantly in the application of planar circuit elements, in the development of different types of sensors, in the design of atypical types of packaging or in the design of electrode systems for capacitive coupled electrical discharges.
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