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Control system for cantilever gates
Koždoň, Ondřej ; Šťastný, Ladislav (referee) ; Bradáč, Zdeněk (advisor)
In this bachelor's thesis is designed and in detail described a battery powered control system for wireless controlling swing gate. This system is designed as a small electronical system with necessary Inputs/Outputs (I/O) an Input for powering from solar cells and it is equipped with requisite software.
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Membraneless speaker
Kovář, Josef ; Šteffan, Pavel (referee) ; Pavlík, Michal (advisor)
The bachelor thesis consists of theoretic basics and describes the design and construction of one-channel membraneless speaker. Absence of mechanical components gives the membraneless speaker no frequency limitation. The design consists of power source, control electronics, which modulates the signal, convertor and output transformer. The power source is realized by transformer, which lowers the voltage and stabilizators. Modulation is provided by integrated circuit TL 594, its duty is adjusted by potentiometer P1 and frequency by potentiometer P2. Power conversion provides dual forward converter. As a output transformer was used transformer from color television.
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Design of analog control device for mini glasshouse
Řehák, Martin ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
Nowadays there are several options how to grow plants that do not come from our climatic belts are used to implement the greenhouses, where the artificially simulated environments, in which plants can vegetate. This work deals with the issue, plant growing in climates that are not for the plants of the rainforest, characteristic. It was necessary to create a greenhouse in which to guarantee the basic conditions for their growth. Such as humidity, temperature and lighting. He was taken into account at the design and implementation of the website.
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Design of analog control device for mini glasshouse
Řehák, Martin ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
Nowadays there are several options how to grow plants that do not come from our climatic belts are used to implement the greenhouses, where the artificially simulated environments, in which plants can vegetate. This work deals with the issue, plant growing in climates that are not for the plants of the rainforest, characteristic. It was necessary to create a greenhouse in which to guarantee the basic conditions for their growth. Such as humidity, temperature and lighting. He was taken into account at the design and implementation of the website.
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Double digitally controllable DC power supply
Kotol, Martin ; Petržela, Jiří (referee) ; Šotner, Roman (advisor)
The award of the thesis is an analysis of the involvement of power supplies in OrCAD.Based on this analysis, the best are selected, power supplies, which are modified on the performance of 2x 0-30V / 0-3A. The connection of power supplies are tested incomputer simulations and proposed the concept of digital control. Digital control power supply is designed by digital potentiometers that are controlled by a microprocessor. The microprocessor is also connected to the measuring unit for measuring the output voltage and current. The power supply is advantageously possibleto connect a keyboard and display for convenient communication. Based on the above proposal is to prototype and test a methodology for resources.Applying the methodology of testing a prototype power source are obtainedmeasurement results are compared with parameters on a computer simulation and verified by digital control.
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Design and Manufacturing of a Blade Stabilizer for Formula Student
Marko, Tibor ; Zemčík, Oskar (referee) ; Slaný, Martin (advisor)
The master´s thesis discuss about design and manufacture of blade stabilizer. It will be sets limit conditions for design blade and subsequent analysis of effects of stress and strain on the rod of blade and assembly of the stabilizer in various settings. For manufacturing of blade it will design materiál of the blank, manufacturing proces and machining conditions with the choice of cutting tools nad cutting machine. In conclusion will be comparison blades from formulas of last years from monopost Dragon 2 to Dragon 6.
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Quantification of Hydraulic Descaling Mechanisms
Hrabovský, Jozef ; Toman,, Zdeněk (referee) ; Dobeš, Ferdinand (referee) ; Horský, Jaroslav (advisor)
The issue of descaling is an important part of the forging and heat treatment of steel and semi products of steel production. Rising of new information and study of this process can increase efficiency and improve the surface quality after descaling. This thesis is focused on the mechanisms of the high pressure hydraulic descaling qualification and study of the chemical compounds of which the scales grown. To achieve all goals of this work and to get a comprehensive view of descaling process, few experimental measurements and numerical analyses were performed. All experimental measurements were focused on obtaining data about fundamental parameters and effects of the hydraulic descaling. The data obtained from measurements were applied to numerical analyses, which aimed to discover a deeper relation and to confirm the experimental results. This thesis can be divided into two main parts. The first part is devoted to parameters of the water jet study. The main studied characteristics of the high pressure hydraulic water jet were heat transfer coefficient and impact pressure at different modes such as standard or pulsating water jet. Experimentally measured data of these parameters were applied in numerical analyses. The numerical analyses were focused on studying the impact of the water jet parameters on the stresses in the oxide scale layers. A further water jet analysis was focused on the influence of the individual parts of the hydraulic system (such as water chamber or stabilizer) on its characteristics. In this part different types of the water chambers in combination with different types of stabilizers on the impact pressure values were investigated. These measurements were supported by fluid flow analysis through the hydraulic system. The second part of this work was focused on getting mechanical properties of the oxide scales from specimens prepared from standard structural steel and specimens from silicon steel. In this thesis, the influence of various parameters and characteristics was studied on these two types of steel. Mechanical properties of oxide scale structures were carried out by the Small Punch Test method. To obtain the fundamental mechanical properties such as Young´s modulus, yield strength and ultimate strength, material parameters based on the measured data were optimized. The whole work was carried out in order to get valuable and comprehensive results about high pressure hydraulic descaling process and influencing factors as well as about oxide scales themselves.
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Quantification of Hydraulic Descaling Mechanisms
Hrabovský, Jozef ; Horský, Jaroslav (advisor)
The issue of descaling is an important part of the forging and heat treatment of steel and semi products of steel production. Rising of new information and study of this process can increase efficiency and improve the surface quality after descaling. This thesis is focused on the mechanisms of the high pressure hydraulic descaling qualification and study of the chemical compounds of which the scales grown. To achieve all goals of this work and to get a comprehensive view of descaling process, few experimental measurements and numerical analyses were performed. All experimental measurements were focused on obtaining data about fundamental parameters and effects of the hydraulic descaling. The data obtained from measurements were applied to numerical analyses, which aimed to discover a deeper relation and to confirm the experimental results. This thesis can be divided into two main parts. The first part is devoted to parameters of the water jet study. The main studied characteristics of the high pressure hydraulic water jet were heat transfer coefficient and impact pressure at different modes such as standard or pulsating water jet. Experimentally measured data of these parameters were applied in numerical analyses. The numerical analyses were focused on studying the impact of the water jet parameters on the stresses in the oxide scale layers. A further water jet analysis was focused on the influence of the individual parts of the hydraulic system (such as water chamber or stabilizer) on its characteristics. In this part different types of the water chambers in combination with different types of stabilizers on the impact pressure values were investigated. These measurements were supported by fluid flow analysis through the hydraulic system. The second part of this work was focused on getting mechanical properties of the oxide scales from specimens prepared from standard structural steel and specimens from silicon steel. In this thesis, the influence of various parameters and characteristics was studied on these two types of steel. Mechanical properties of oxide scale structures were carried out by the Small Punch Test method. To obtain the fundamental mechanical properties such as Young´s modulus, yield strength and ultimate strength, material parameters based on the measured data were optimized. The whole work was carried out in order to get valuable and comprehensive results about high pressure hydraulic descaling process and influencing factors as well as about oxide scales themselves.
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Measurement of torsion bars and stabilizers
Bláha, David ; Vančura, Jan (referee) ; Blaťák, Ondřej (advisor)
This diploma thesis deals with the measurement of the anti-roll bar characteristics. The target of this thesis is to design a device for measuring of torsional stiffness of the automobile stabilizer bars, design a measuring sequence for detection values subsequently used to calculate the stiffness, and calculate the total measuring error. The measuring device is designed for the needs of the Institute of Automotive Engineering of FME BUT.
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Tail units design of VUT 100 aircraft made out composite
Berka, Martin ; Cejpek, Jakub (referee) ; Mališ, Michal (advisor)
This Master´s thesis describes the design of composite horizontal tail of VUT 100 aircraft. Load calculation and selection of the critical load cases is performed. Internal structure of stabilizer and right elevator is designed. Construction materials are chosen and the structure of the composite materials is proposed. FEM models of stabilizer and the right elevator are created in MSC Patran system and consequently the strength test of the models for the selected load cases is executed using MSC Nastran software and COMPOST.
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