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Three-phase sinusoidal pulse width modulation algorithms
Rudolf, Ladislav ; Červinka, Dalibor (referee) ; Klíma, Bohumil (advisor)
The main theme of this bachelors‘s thesis is to introduce readers into the algorithm of generating three-phase sinusoidal pulse width modulation. Main attention is concentrating to methods of generating Pulse width modulation method such as comparate PWM modulation technique and space modulation of voltage vector SVM. The functional units of algorithms are analysed and described from the basics. In addition, this project describes the basic analog solutions and even the implementation of the PWM modulator into signal processors DSP56F800.
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Use of PhotoModeler program in forensic engineering practice
Zdražilová, Alena ; Klika, Pavel (referee) ; Daňhel, Petr (advisor)
The main task of this thesis is to find out dimensions of family house from photos and after that use this dimensions to create a 3D model. Another task is to create and then test optimal procedure of taking photographs of house for the purpose of work in PhotoModeler software and subsequent processing in Autocad. The result is a model that serves for creation of sections and taking measurements necessary for valuations of a family house. The optimum process should be a compromise of the simplest and the most accurate method of creating 3D models.
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Band Gap - accurate voltage reference
Bubla, Jiří ; Petržela, Jiří (referee) ; Kolka, Zdeněk (advisor)
This diploma thesis is specialized on a design of a high accuracy voltage reference Bandgap. A very low temperature coefficient and output voltage approx. 1,205V are the main features of this circuit. The paper contains a derivation of the Bandgap principle, examples of realizations of the circuits and methods of compensation temperature dependence and manufacture process, design of Brokaw and Gilbert reference, design of a testchip and measurement results.
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Evaluation and modelling of Traffic Noise
Černoch, Adam ; Spies, Karel (referee) ; Kudrna, Jan (advisor)
The task of the master's thesis is introduction with the problems of traffic noise, focusing on noise from road traffic. There is a description what is the noise, how it is formed, its resources and what are the methods of measuring. The following are the various noise reduction measures such as noise barriers and low noise pavements. The main attention is devoted to the noise generated at the tire / road that is reduced by these pavements. The practical part describes the implemented measurements on individual sections at various locations in our country. The measurement was carried by slightly modified method CPX with reference tire directly at the vehicle. The main aim was to evaluate the measurement data, make comparison of different low-noise surfaces with each other and with the commonly used surfaces. Then quantification of the rate reduction of the noise emission for a given section and verification of input data for noise modeling. In conclusion, the obtained results are summarized and based on them were confirmed very good acoustic properties with the recommendation to continue with measurements in the future.
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The Application of Fuzzy Logic for the Choice of Supplier
Remeš, Filip ; Geryk, David (referee) ; Dostál, Petr (advisor)
The diploma thesis employs modern analysing and simulating methods. It enables the application of fuzzy logic in supplier selection and evaluation of its potential risks to construction companies. This work is aimed at defining the problem and determining the overall and particular goals, namely theoretical description of the principle of used artificial intelligence theory, problem description and analysis, current situation as-sessment, proposed solution implementation and evaluation of proposed solution con-tribution.
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Desulphurization of pulverized coal bouler (dry bottom ash) in Teplarna Olomouc
Haluza, Jakub ; Lisý, Martin (referee) ; Skála, Zdeněk (advisor)
This master thesis deals with the feasibility studies desulphurization of powder granulation K3 boiler at Olomouc heating station. K3 boiler burns black energetic coal and after January 1st, 2016 will not meet new more strict emission limits. The theoretical part of the thesis charts usable desulphurization methods from which the semi-dry NID appears as the most appropriate one. In the practical part there is performed a stoichiometric calculation of the flue gas and the balance of raw materials and output products. The possibility of NID method usage is confirmed here. Next the annual operating cost of the desulfurization process is calculated and some NID systems already installed references are presented.
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Meaurement process automatization of Zener reference
Bábek, Tomáš ; Nováková Zachovalová, Věra (referee) ; Havlíková, Marie (advisor)
This thesis deals with metrology specialized to DC voltage. In the begining of thesis is explanation of technical terms from metrology, summarization of units from International System and explanation of the standards and its kinds in the context of metrology. Primary standards of DC voltage based on Zener diodes and Josephson effect are described as well. In cooperation with Czech metrology institute in Brno this work is focused on automatization of measuring Zener reference standards (ZRS). Goal of this project is to automatize the measuring of Zener reference standards and its relationship with Josephson voltage system using scanner. To do this, there is a need to find out offsets, that can develop on scanner's channels. There is a theoretical analysis of measuring made on the scanner and their uncertainties. Aim of the solution is computation of scanner channels offsets using everyday automatic measuring the system of Zener reference standards (ZRS). For measuring the LabView was used and for computing the data from measured values the Matlab was used. This thesis should short the time needed when measuring DC voltage references, measure values of DC voltage standards and set the scanner channels offsets. In the end there is a summarization of offsets measured on individual scanner channels.
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Information Centre
Kovář, Jindřich ; Štrba,, Michal (referee) ; Barnat, Jan (advisor)
This bachelor thesis is concerned with the static project and the consideration of the carrier steel construction of the information centre that means the two-storeyed building with the 24 x 24m extent. The project is solved by two options. In both cases, the steel basis with components united by articulated joints is concerned. These are pillars, supporting joists and ceiling beams that are composited with a concrete desk so that they ensure the position stability in a horizontal direction. The both options differ from each other by the position stability method in a vertical direction. In the first case, the vertical clamps avoid the deformation. In the second case, two frame constructions are designed for both yawing directions. The result was the choice of the first method that is discussed in a more detailed way further.
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