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Dynamometer for measuring power of IC-engines
Mikulášek, Tomáš ; Klimeš, Lubomír (referee) ; Štětina, Josef (advisor)
The aim of the work was to summarize the development of a system for measuring the power of internal combustion engines, from the initial simple dynamometers, to modern electronic devices with flange strain gauge for sensing torque compared their advantages and disadvantages, usability, efficiency, performance and manageability. Furthermore there was performed comparison with the standards dealing with this issue. Use of these devices is available, subject to atmospheric conditions specified in standard and manufacturer.
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Experimental measuring of model house lift
Kalina, Martin ; Feiler, Zdeněk (referee) ; Koláčný, Josef (advisor)
This work describes a model of a house elevator with an EC motor ( Electronically Commutated Motor) and a programme essential for controlling of the model and adjusting of the protective features for a safe operation. The work deals with experimental measurement based on the model, firstly while being at idle run, and then while being loaded. It is focused on the identification of influencing the EC motor input by usage of the counterweight. The aim of the work is to process the measured data, which are then used for mechanical adaptation of the model and the consequent confrontation between the measured data gained before and after the adaptation. Also an important part of the work is the simulation of the elevator using the 3D SolidWorks Programme.
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Control of c.h.p. unit
Ulver, Martin ; Sutorý, Tomáš (referee) ; Kolka, Zdeněk (advisor)
Master’s thesis deals with cogeneration unit and its control. Cogeneration unit used to energy production and heat production. Power of cogeneration unit is controlled by current consumption of the building, so that the absorbed power from the public network to a minimum. The control unit is composed of two individual part, which is communicated together along single phase of the ~230V. One part measure absorbed power of the network and the second control a cogeneration unit.
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Memory Management in Linux
Tuček, Jaroslav ; Kočí, Radek (referee) ; Vojnar, Tomáš (advisor)
This work describes the memory manager subsystem of the linux kernel. The first part gives a brief account of operating systems architecture and memory management theory - of virtual memory management, page tables, page replacement algorithms and kernel allocators in particular. The second part discusses the actual implementation of these principles in a modern kernel - in linux. Finally, a series of tests stressing the memory subsystem is conducted to determine the memory manager's real behaviour. Limitations of the current linux kernel memory management and some of their proposed solutions are also discussed.
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OpenGL Performace Meassurement Tool
Rehorčík, Pavol ; Polok, Lukáš (referee) ; Pečiva, Jan (advisor)
This thesis talks about theoretical and practical side of development of testing application for OpenGL performance with focus to shaders. In theoretical part are individually described used techniques and principle of usage of shaders. The core of thesis is practical part, so creation and implementation of this application. In final part I discuss measured results and possible extensions.
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Advanced Tools for Performance Measurement
Smrček, Jaromír ; Gajda, Zbyšek (referee) ; Kašpárek, Tomáš (advisor)
This thesis presents the I/O layer of Linux kernel and shows various tools for tuning and optimization of its performance. Many tools are presented and their usage and outputs are studied. The thesis then focuses on the means of combining such tools to create more applicable methodology of system analysis and monitoring. The practical part consists of applying SystemTap scripts for blktrace subsystem and creating a fragmentation monitoring tool with graphical output.
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Performance Testing of Linux Kernel Scheduler
Vozár, Jiří ; Rogalewicz, Adam (referee) ; Malík, Viktor (advisor)
Výkon plánovače procesů v jádře operačního systému značně ovlivňuje rychlost a odezvu všech aplikací, které na něm běží. Jakýkoli propad výkonu pak může mít kritické důsledky na běhu aplikací. S příchodem každé nové technologie (např. symetrický multiprocesing) se kód plánovače vyvíjí a rozšiřuje. Proto jsou potřeba regresní testy nejen na jeho fukčnost, ale i výkon. Tato práce mapuje metody testování plánovače operačního systému Linux ve firmě Red Hat. Popisuje způsoby měření výkonu plánovače, sbírání informací o jeho chování, ukládání sesbíraných dat a jejich vizualizaci. Hlavním cílem práce je pak návrh a implementace nového způsobu vizualizace dlouhodobých měření a využití strojového učení pro automatické rozpoznání degradace výkonu mezi dvěma výsledky.
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Franc, Lukáš ; Porteš, Petr (referee) ; Zháňal, Lubor (advisor)
This master thesis deals with verifying whether it is possible to determine the external speed characteristic of the engine using sensors in mobile phone. For this verification were made driving tests, during which the driving data were measured with mobile phone. These data were processed in the calculation part in MATLAB. Results were compared with power measurement on chassis dynamometer and with two alternative methods of power measurement.
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Energy Consumption of Smart Device in Smart Houses
Bína, Ondřej ; Pluskal, Jan (referee) ; Matoušek, Petr (advisor)
A large number of manufacturers are currently developing smart energy-saving devices, which should benefit not only with their available settings, but in many cases also save households on the consumption of water, gas, or electricity. This work focuses on verifying the electricity consumption of the most commonly used smart devices in the home that a person can purchase. The goal is to measure the consumption of these appliances in the home and subsequent analysis of the obtained data. As part of the analysis, the key findings are the comparison of the measured data with the data given by the manufacturer and with the consumption of their original "stupid" alternative. In addition to the mentioned analysis, the output of the work is also a recommendation of suitable device modes for specific use cases.
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Design, Creation and Implementation of Software Applications in the Corporate Environment
Pacal, Václav ; Koch, Miloš (referee) ; Novák, Lukáš (advisor)
The thesis deals with the analysis of the current state, design and implementation of a web application in a corporate environment for processing and storing data from an application that does not use relational databases, but works with event-based data. In addition, the application allows the export and transformation of this data to an external database for an analytical application. The thesis includes an analysis of the tracking of data changes in the database and message brokers. In addition to the design and implementation, the final chapter discusses the economic evaluation of the thesis.
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