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3,8 kW induction machine
Stoican, Bogdan Adrian ; Ondrůšek, Čestmír (referee) ; Mach, Martin (advisor)
Úkolem této semestrální práce je návrh asynchronního motoru. Pro výpočet technických parametrů asynchronního motoru je použita analytická metoda, která je implementována do vytvořeného počítačového programu. Výsledek je ověřen pomocí programu ANSYS RMxprt. Technickým úkolem je umístit tento motor do určeného prostoru. Návrh sleduje stanovené technické parametry a výsledek respektuje požadovaný průměr statoru i optimalizaci jeho rozměrů. Pomocí programu ANSYS RMxprt jsou výsledky analyzovány s cílem najít technické řešení umožňující zmenšení rozměrů stroje. V závěru práce je návrh motoru změněn dle výsledků, které umožňují optimalizaci technických parametrů návrhu stroje.
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Digital controlled resistor
Sedlář, Petr ; Petržela, Jiří (referee) ; Šotner, Roman (advisor)
This master´s thesis deals with the design of the control circuits for digital potentiometers and their application in analog systems. Digital potentiometers are three-terminal resistors with an adjustable center connection. The digital potentiomneters enable to drive logic gates, LED drivers, LCD drivers, analog switches etc. Controlling of these mentioned devices is possible by the I2C 2- wire serial bus (invented by Philips). The digital potentiometers are used to control of the primary parameters like cut-off frequency and quality factor in the state variable filter and cut-off frequency in a passive filter. Both filters are simulated in PSpice and then compared with the measured results. Next parts of this master's thesis are a computer program and a exemplary protocol.
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Open Data, Open Source and Law
Končitý, Patrik ; Míšek, Jakub (referee) ; Myška, Matěj (advisor)
This bachelor thesis is focused on the area of open data and open source software. The practical output is the creation of an application that will be distributed under an open source license and will use open data. The theoretical part of the thesis describes the juristical aspects that arise when the programme is created, and also is here explained czech and european legislation. It also describes here the term of free and open source software, types of authorship, author's rights or special rights of the database maker. In the next passage, we will speak about the licence and then the public license under which the application will be distributed is described. Next is a chapter, which dealing with specific problems related to copyright protection. The second part of the theoretical work addresses open data. First is clarified this term and then EU and Czech legislation is listed, which is linked to open data. Then attention is focused on data openness formats and ways of providing open data. Finally, specific problems that may arise when using open data are listed. The next part of the bachelor thesis deals with practical output, an android application that meets the definition of free and open source software. Data analysis is performed here first. After The analysis is here chapter of the selection of a suitable data set and then the conditions for the use of data sets are analyzed. In next chapters, the technical side of things is already more addressed. A choice of platform, language and development environment is described, which public license we choose for distribution and a platform and where will be the distributed the application. The app functionality chapter describes the intended functionality and structure of the app. The last chapter describes the application solution itself. The principle of main parts for the application, such as creating tables, chart or implementing quiz, is described here.
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Program for design of CATV
Sedláček, Jan ; Hála, Ondřej (referee) ; Říčný, Václav (advisor)
The main task of this master’s thesis is to create an interactive computer programme for the design of small and medium television cable circuits. The first part of this document describes main conceptions of a modification and a distribution of television signals. There are also introduced basic topologies of small and medium sized distribution networks, some passive and active elements in the circuit including their usage. There is also described an algorithm for calculation of circuit’s values. The second part contains a detailed description of created programme with all of its functions. A part of this document is made by a sample calculation of the four variants of circuit and its comparison with computer calculation. In suplement are included selected parts of source code.
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PREDICTION SOUND INSULATION PROPERTIES DIVIDER BUILDING STRUCTURES AND SECURITY ACOUSTIC COMFORT INSIDE BUILDINGS
Berková, Petra ; Katunský,, Dušan (referee) ; Tuza,, Karel (referee) ; Vaňková,, Marie (referee) ; Vlček, Milan (advisor)
This thesis deals with the properties of soundproof partition structures in the low-frequency sound at impact sound insulation and security of acoustic comfort inside buildings. The prediction of impact sound is a simulation laboratory measurements of impact sound. The work is based on the occurrence of frequent complaints of inhabitants of residential homes for subjectively poor impact sound insulation of horizontal dividing structures, whose top layer is formed laminate. Although these structures conform in terms of impact sound insulation in accordance with the requirements of CSN 73 0532: 2010, residents complain about the subjective perception of the sounds of lower frequencies. A noise with a distinctive character of sound at low frequencies has been proved by measuring the spectral analysis and evaluation of sound pressure levels caused by the movement of persons roof construction to the floor. On the measurement and evaluation carried out in accordance with the measurement and evaluation of noise in non-working environment can be related requirement under the Regulation No. 272/2011 Coll. "On the protection of health from the adverse effects of noise and vibration." Occupational noise limits for protected buildings interior space do not apply to noise from ordinary use of the apartment. Under current legislation, the problem is in the Czech Republic at present insoluble. Therefore, this work explores ways evaluation of impact sound and delivery is determined conclusions. With the low-frequency impact sound insulation is also related to the latter part of this dissertation, where the computing program ANSYS (version 14.0) is simulated laboratory measurements of impact sound insulation of the real structure. The paper presents the results of simulation, and the sound pressure level in the receiving room to třetinooktávového band 630 Hz. These results are compared with measured values modeled in the laboratory.
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System of On-/Offline temperature measurement based on Lab View
Stejskal, David ; Hammer, Miloš (referee) ; Prostredník, Daniel (advisor)
The objective of this thesis was to create a LabVIEW-based program for temperature measurement using a personal computer. The program allows reading and post processing of digital signal from a measuring device. This device consists of a sensor type PT100, a measuring transducer and an analog-to-digital converter with USB output. The theoretical part of the thesis deals with resistance temperature sensors, signal analysis and methods for signal processing. The practical part is conceived as a guide to the created program. This part introduces vital sub-elements of the program and describes their principle, practical use and also the operating instructions. As required by thesis assignment, practical part includes verification of the measuring device, which was performed in laboratory of Czech Metrology Institute in Brno.
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Optimalizace termínu setí ozimé pšenice
Petříček, Rudolf
The bachelor's thesis deals with the optimization of the sowing date of winter wheat in the agricultural enterprise Agrodružstvo Blížkovice. The work contains basic information about the cultivation of winter wheat and its requirements for temperature, soil, inclusion in the sowing process, and describes the agricultural techniques in the establishment of stands. The practical part deals with the comparison of the real date of sowing with the date set by the program for the calculation of the optimal date of establishment of winter wheat stands on land according to the prevailing values of rated soil ecological units. This comparison was made in three years (2018, 2019 and 2020), on areas of 1472-1864 ha. The deadlines for the end of winter wheat vegetation and the basic sowing dates for the four growth phases (BBCH 27, 25. 23, 14) before the onset of winter, which are part of the calculation algorithms of the program used, were verified. It has been found that the growth phase of BBCH 25 before the onset of winter, which is usually recommended as a suitable strategy for optimizing wheat growing technology, can be achieved under given conditions when sowing in the third decade of September. The sowing of these areas of winter wheat was spread over six weeks, beginning in the first decade of September and ending in the second decade of October. Area seeding performances were influenced by the course of the weather in individual years, by the pre-crops of the winter warbler and by the availability of mechanization means.
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Software licensing in cloud computing and related legal issues
Kršňáková, Hana ; Holcová, Irena (advisor) ; Křesťanová, Veronika (referee)
Název rigorózní práce, abstrakt a klíčová slova v anglickém jazyce Software licensing in cloud computing and related legal issues The topic of this rigorous thesis is "Software licensing in cloud computing and related legal issues." The aim of this work is to define the individual advantages and disadvantages of software licensing in the basic cloud computing models from the point of view of Czech legislation with the overlap into the European and international legislation. The author further aims to evaluate whether this regulation of software licensing in cloud computing is sufficient. For this purpose, the author in the first chapter of this work deals with the definition of cloud computing, describes individual deployment models - private, public, community and hybrid and its three basic distribution models - IaaS, PaaS and SaaS. In the second chapter, the author deals with software, its legal regulation and licensing according to the Czech legal system with an overlap into European and international regulation. Czech legislation is based, among other things, on the Berne Convention, the WIPO Copyright Treaty and European Directives, especially Directive 2009/24/EC. Its basic legal regulations applicable to software licensing in cloud computing include the Civil Code and Copyright Act, which captures...
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Legal Protection of a Computer Program
Korčák, Václav ; Holcová, Irena (advisor) ; Křesťanová, Veronika (referee)
Computer programs make up a large part of assets of modern companies. Therefore, legal protection of computer programs is of great importance for supporting the creation and development of start-ups and technology companies in the Czech Republic. The legislator must take into account the special nature of computer programs and balance the interests of all actors. The aim of this thesis is to analyse the current state of legal regulations of computer programs in the Czech Republic, in particular copyright and patent protection. Furthermore, the thesis describes other valid methods of legal protection of computer programs (unfair competition, administrative law, criminal law) and influential alternative forms of protection that have emerged as a solution to the problem of the special nature of computer programs (WIPO sui generis protection, model software petite patent, Manifesto model, utility model). At the end of the analytical part, the thesis points out the types of computer programs that differ in some essential features (artificial intelligence, computer game, website). The synthetic part compares and comments on the various forms of legal protection of computer programs in force and alternative forms in terms of applicability under the Czech legal system, duration of protection, subject...
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Training of cognitive function after brain injury with use of Test System Schuhfried
Macková, Lenka ; Oktábcová, Alice (advisor) ; Piťhová, Zuzana (referee)
1 Abstract: Brain injury is a heavy burden on our society and one of the consequences of brain injury is cognitive impairment. Cognitive functions are essential to self-sufficiency and participation in the life of man. The aim of this work is to describe the use of a computer program CogniPlus from Vienna Test System Schuhfried for the training of cognitive functions for patients after brain injury. The theoretical part provides information on the issues of brain injury and its consequences and describes cognitive functions and their disorders. Furthermore, this section describes the options for neurorehabilitation and neuropsychology and there's also described the role of occupational in training of cognitive functions. Conclusion The theoretical part focuses on the use of computer programs and their advantages and disadvantages, and lastly, there is a detailed description of the computer program CogniPlus. The practical part is focused on the possibility to use a computer program for training (CogniPlus) of cognitive function of patients after brain injury. The practical part contains two case studies. Each patient was conducted 10 training sessions on CogniPlus during two months - once and twice a week. Before and after of the therapy series, cognitive tests were performed on patients for evaluation of...
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