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USB controlled voltage and current source
Pytela, Ondřej ; Kubánek, David (referee) ; Lattenberg, Ivo (advisor)
This diploma thesis is focused on complete construction of lab source which is controlled and powered by USB in personal computer. Different types of possible solutions are mentioned and finally one of them has been picked up as a best choice, which is developed in the rest of this thesis. Besides hardware construction there is also shown creation of main program for PIC18F14K50 microcontroller and main application that provides controlling of USB source via personal computer.
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Iverter for three-phase motor
Mikuška, Martin ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
This master’s thesis goes into design of particular circuits for three phase inverter. Inverter’s control is ensured by digital signal controller MC56F8013 with his program. Principle of control is suggested for individual motors. Inverter design considerate universal use and capability for any three phase motor. Particular blocks are compatible each other.
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Microprocessor-controlled autonomous source of constant current and voltage
Kováč, Marek ; Lattenberg, Ivo (referee) ; Pavelka, Ondřej (advisor)
The task of bachelor thesis is proposal of switching source for the construction of leadacid battery charger 6/12V controlled by microprocessor. It is based on buck converter of voltage. The first part presents the activity of converter and properties of lead-acid batteries, followed by a proposal of converter for a given application. The second part describes a criteria for selection of individual components and dimensioning them. The result of this thesis is simulation of converter in PC program Micro-Cap 9, along with the necessary calculations, a proposal of circuit with the calculation of inductor and methods of measurement of output quantities. Finally, is realized circuit board with a couple measurements and control program for the microcontroller. The entire proposal is focused to achieving the greatest simplicity of facility and efficiency and quality of charging accumulators together at low cost to the product.
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Extension of WinCC program - parameterisation of PLC application
Sysel, Radek ; Pásek, Jan (referee) ; Štohl, Radek (advisor)
The aim of bachelor´s thesis is to propose parameters PLC applications and introduce a management system for steam turbines manufactured by Siemens in Brno. Be familiar with WinCC visualization program and link it with Simatic STEP7, which then communicates with the PLC. Subsequently, on the basis of this knowledge to create a functional application that is integrated into their applications. The functional application and their application will coordinate with each other. After the theoretical design I came to the practical implementation of the application. First, I prepared the functional blocks in STEP 7. Then I went to the graphic’s implementation in WinCC program. In conclusion, I verified the functionality and I stated the other direction to which the application should take.
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DC/DC step-up converter for notebook
Škunda, Michal ; Klíma, Bohumil (referee) ; Červinka, Dalibor (advisor)
Given bachelor’s thesis devoted to a proposal and implementation of transducer STEP-UP for supplying of notebook in car. Introduction presents dividing of switching power supplies followed by a choice and a proposal of power supply. In this work we can find the specific proposal of inductor, the proposal of electronic connexion and the proposal of PCB layout. There is a software EAGLE used for the design of PCB layout. In the last part of work there are particular courses of current and voltage that characterize power supply pictured. The work contains measured load characteristic of switching power supply loaded by notebook as well. Notebooks need to have quality power supplies that is why there was a special attention paid to the quality of supply and its electric parameters.
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Models of DC transistor converters in Simulink program
Loup, Martin ; Pazdera, Ivo (referee) ; Huták, Petr (advisor)
The master’s thesis is focused on the creation of models of DC/DC converters and control program for input parameters and their configuration. The first part is theoretical and she is dedicated to the description of the program Matlab. The second chapter is dedicated to DC/DC converters. Their function is described there and the necessary equations for the design are derived. All of this is complemented by the calculation of line losses in semiconductor elements and the design of voltage and current regulator. The last two parts deal with the description of the created models in Simulink and control program in a graphical environment. The created program is able to edit and recalculate parameters of the converters, calculate line losses on semiconductor components, perform a model simulation or open it.
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Simulation of a technological process on PLC
Kubín, Jan ; Kordasová, Zdeňka (referee) ; Pásek, Jan (advisor)
The aim of this work is to prepare a workplace that would enable the staff to familiarize with new technologies, to familiarize them with new possibilities that modern management systems provide and teach them to operate the innovative control systems in a simulated process like if it were the real technology. The task was to prepare the simulation of the tools and technologies so that this program functioned as the true technology. The first part of the thesis is devoted to the basic theory regarding the means used to implement the simulation and description of simulated technology - the vertical mill KTM. The second part deals with the design and description of the simulations for which the program STEP 7 is used and for the visualization the program WinCC.
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Computer control of the deposition process
Pavera, Michal ; Voborný, Stanislav (referee) ; Urbánek, Michal (advisor)
This bachaloers thesis deals with automation of the deposition process of the ultrathin layers by IBAD method. One of the tasks is to design motorized target and shutter manipulator. The thesis therefore contain drawings of these manipulators. Which enable their control by stepper motors. Second task is to design of electronics and program control of primary and secondary ion source. In this part is described connection of the system with the computer using AD/DA converters and the appropriate programming. Last part of the thesis deals with differences between automated and manual control of the system, their advantages and disadvantages.
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Production of metal gasket by follow-on blanking die.
Hondl, Jiří ; Dvořák, Milan (referee) ; Forejt, Milan (advisor)
HONDL Jiří: Production of metal gasket by follow-on blanking die. Final term paper elaborated as part of undergraduate studies in Program B 2341 Machine Engineering, presents design of technology for blanket formation of cutouts/parts made of Al-Mg-Si alloy with cold-process die stamping. A study of literature dealing with the process of step-by-step formation and the relevant calculation, it was decided to opt for tool cutting. The cutting tool comprises standardized components consisting of a regular stand that is mounted onto an eccentric tilting press LEN 25 – C with nominal power of 250 kN. The trimming punches and blades are made of tool steel 19 436.8, thermally treated according to drawing documentation.
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