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Camera Positioning Device
Berčík, Vojtěch ; Toman, Marek (referee) ; Červinka, Dalibor (advisor)
This master’s thesis deals with the design of a drive for a camera positioning device that could be used for shooting videos and timelapses. The optimal drive and power supply as well as the steering program based on the Arduino platform program are developed. The construction prototype adapted for printing at 3D printers is also designed. The whole system is then produced and tested.
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Microprocessor controlled inverter for motors
Fiala, Michal ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
This diploma thesis deals with design of universal converter used for motor control by microcontroller. The first part contains concept, functional overview of the device and its parts. The next part deals with mechanical design and construction of the converter and dimensioning of power, control and measurement circuits. The following part describes control algoritm used for three-phase motor and its testing using simulation. The final chapter of the thesis describes PCB mounting and testing of the device and control algoritm on real motor.
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Electrical installation with intelligent lighting systém
Benčo, Tomáš ; Červinka, Dalibor (referee) ; Ondrejček, Vladimír (advisor)
The aim of this thesis is primarily to get acquainted with the possibilities of intelligent lighting solutions in buildings. The first part of this thesis consists of individual requirements and principles when creating project documentation wiring. Given that this issue is very voluminous content is not possible to describe all the principles, standards and requirements in the development of project documentation in detail. The next section focuses on the issue of intelligent building installations. Comparison between classical and intelligent installation wiring. Their advantages and disadvantages. Another part of this work focuses on the installation of intelligent, we chose the control system from Loxone. Its main parts, the way working and functionality that is able to perform. And the last part is the overall drafting of installation of the house, which is divided into classical and intelligent part.
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Electronic ballast for power LEDs
Vágner, Richard ; Martiš, Jan (referee) ; Červinka, Dalibor (advisor)
This diploma thesis deals with design of power LED driver. This driver contains electronic ballast circuits, converters, filters and control circuits. Overviews of circuits used in practice are listed along with analysis of power LED and considering options for selecting an appropriate design solution. Principles of creating the device, structure and problems of current source are described in thesis. Including detailed overview of converters, ballasts and topologies used in lighting systems with the selection of a suitable solution for the final device with an output power of 50 W. The thesis includes cooling dimensioning for selected power LEDs, input circuit with EMI filter, bridge rectifier, boost converter and flyback converter with pulse transformer.
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Compact inverter for BLDC motor
Nevřivý, Tomáš ; Červinka, Dalibor (referee) ; Procházka, Petr (advisor)
The work describes the design and implementation of compact inverter for brushless DC motor, which have mechanical power 600 W and rated torque 1.6 Nm. Motor is designed for DC link voltage with value 300 V. The focus is placed on the cost and simplicity. On this basis, the inverter is designed for uses single purpose power and control circuit. The power part is solved using a circuit FSBB15CH60C. The circuit is placed on a separate board of power electronics. Cooling of the power circuit is performed by the surface structure of BLDC motor. Control of the inverter ensures circuits LB11696V and NE566. The both circuits are placed on separate board of control electronics. Circuit LB11696V contains a control algorithm, as well as protections, which are necessary for safe operation of the inverter. Power supply of electronics is performed using step-down converter from MYRRA company.
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Use of a programmable logic controller in teaching process
Malý, Jan ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
Bachelor thesis is divided into four parts. First part concentrates on programming languages used for programming a PLC. These are divided into graphical and text languages. Graphical languages consist of ladder diagram and function block diagram. Text languages are Structured text and instruction list. Each of these languages are described in subchapters. Second part deals with description of three laboratory tasks. The last part contains pictures a information about laboratory task’s made equipment.
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Power Converter for DC Welding
Vranák, Daniel ; Červinka, Dalibor (referee) ; Patočka, Miroslav (advisor)
The masters thesis was focused on design and realization power converter which should worked as welding machine. It was necessary choose suitable type converter. Next, it was needs design of pulsed transformer, output filter choke and design of semiconductors which were in power part welding machine. It was also designed control and driver circuits. This parts which were used on construct the converter were made and tested too.
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Switched power source for electroplating
Janků, Roman ; Minárik, Vladimír (referee) ; Červinka, Dalibor (advisor)
The thesis deals with the switching source for electroplating. The theoretical principles of galvanizing, the optimal technological process and a list of most commonly used metals are described. There is also a list of well-known producers, and a description of their resources for electroplating, which have the same output parameters. In the second part of the work there is an introduction of the already-completed school source 2000A/20V, major technical imperfections is solved there. There is also proposition of technical layout made in 3D AutoCAD. Finally, there is an economic analysis of the production costs of the source and a research in suitable suppliers of components and materials. The thesis contains an estimate of the selling and total price compared with competition.
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Modeling of the thermal effects on living tissue during electroporation process
Kafka, Roman ; Cipín, Radoslav (referee) ; Červinka, Dalibor (advisor)
The work deals with the current state of knowledge of heat transfer in living tissue. It is described here what the distribution of heat is affected with and the existing calculation options. For solving Pennes equation using finite element method COMSOL Multiphysics 5.4 is used. From the current state of the published studies, three are selected and described, each using a different approach. Based on the benefit of each of the studies described, a simple model of its own that simulates an ablation catheter attached to cardiac tissue is solved. A change in electrical conductivity as a function of the electric field intensity is taken into account, but there is also a comparison with anisotropic tissue that has electrical conductivity in different directions. The result of the calculation is voltage distribution, density of electric current and losses, temperature distribution in the model at several time points and graph of temperature development over time.
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