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Design of a rotary pendulum with a flexible joint
Palát, Ondřej ; Formánek, Martin (referee) ; Dobossy, Barnabás (advisor)
This Bachelor thesis is focused on design of laboratory equipment with flexible joint. It describes construction, control electronics design, microcontroller programming and mathematical modelling describing flexible joint dynamics. Model parameters were estimated based on measurements. First part also describes market survey and brief description of algorithms used for numeric parameter estimation.
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Statistical Model Checking of Approximate Computing Systems
Blažek, Michal ; Sekanina, Lukáš (referee) ; Strnadel, Josef (advisor)
This bachelor's thesis focuses on the simulation of models of approximate multipliers. The main aim of the thesis is comparing selected properties of multipliers in an application-specific scope of input values. The thesis includes the conversion of multiplier models from the EvoApproxLib library into models used in the UPPAAL environment. These models are then simulated while monitoring their selected evaluation metrics such as error probability, mean absolute error, etc. From the obtained results, one can conclude that using a suitable approximate multiplier in a specific context can have a positive effect on the error in calculations. The results could therefore have further applications in the field of approximate computing systems.
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Design and realization of 110 kV overhead and cable line laboratory models
Lelek, Jan ; Jurák, Viktor (referee) ; Ptáček, Michal (advisor)
The bachelor thesis deals with modelling of overhead and cable of 110 kV lines in PSCAD simulation environment and realization of equivalent laboratory models of these lines. The objectives of the thesis also include an approximation of the technical design of 110 kV lines, definition of the necessary parametrs for the creation of the models themselves, including descriptions of the possibilities of mathematical modelling of the lines. Following the fulfilment of the mentioned objectivites, the theoretical part of the thesis presents factual data of 110 kV lines located within the distribution networks of the Czech Republic, including the basic theory related to line parameters. Subsequently, the thesis deals with the introduction of possible approaches of mathematical modelling of lines, targeted description of possible modelling approaches in the PSCAD simulation environment and selection of necessary parameters for the creation of these models. The practical part of the thesis presents the mathematical models of overhead and cable lines, presenting the results of simulations for different operating states of the lines. The practical part also presents in detail the design, realization and laboratory measurement of physical laboratory models of overhead and cable of 110 kV lines. The thesis then includes a comparison between the results obtained for the line models that were created in the PSCAD simulation environment and the laboratory models.
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Analysis of Characteristics of Train Traffic Controlled by ERTMS/ETCS
Ondroušek, Adam ; Šimek, Václav (referee) ; Strnadel, Josef (advisor)
The aim of this thesis is to analyze train operations controlled by ERTMS/ETCS, primarily within the Czech Republic. A model was created using the Uppaal software, which simulates train operations. Subsequently, a scenario was designed that significantly increased the efficiency of the modeled track. This scenario was verified using Uppaal SMC's simulation and probabilistic queries. Favourable results were achieved by doubling the intervals of passenger transport during peak hours and adding a freight train unit to the operation during this time with minimal time delay while maintaining operational safety. The model is designed to simulate any train unit and track section and could thus serve as a tool for planning and analyzing train transport after the implementation of ERTMS/ETCS.
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Investigation of transport processes in humic systems using computer modelling
Zeman, Matěj ; Sedláček, Petr (referee) ; Smilek, Jiří (advisor)
This bachelor’s thesis deals with issue of humic acid diffusion. The main goal of this work is to obtain a simple mathematical model that simulates the dialysis of a dye and humic acid and thus to investigate the bonding properties of humic acids as a sorption agent. This model was simplified enough to be used as a basis for the next modelling. The COMSOL Multiphysics program was used to create the model, especially the „Transport od Diluted Species“ and „Chemistry“ modules, which enable simulation of the mentioned processes. The results showed that it is possible to monitor dialysis over time using this model and at the same time the sorption properties of these substances can be observed.
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Household consumption diagram model
Bočan, Tomáš ; Brettschneider,, Zbyněk (referee) ; Radil, Lukáš (advisor)
The thesis deals with the creation of a model of the household consumption diagram. Firstly, the thesis outlines an analysis of current approaches to creating household consumption diagrams with their evaluation. The thesis then describes the input data, the procedure for creating the model itself, and in the last section, a simulation of household consumption is performed and an evaluation of the accuracy of its prediction, based on reference data.
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Use of the USLE 2D Model to Assess the Impact of Anti-Erosion Measures on the Extent of Potential Water Erosion in the Research Area of Sobotište
Tomaščík, Matúš
The article focuses on assessing the impact of anti-erosion measures on soil water erosion implemented at the Sobotište research site, covering an area of 68 ha. The anti-erosion measures consist of two water retention grass ditches located in the lower part of a slope and a change in the management of the entire slope. The assessment twas conducted by comparing slope conditions before and after implementing anti-erosion measures using the Universal Soil Loss Equation (USLE) and the USLE2D sub-model, which calculates the LS topographic factor. The modelling was conducted in the ArcMap software environment with a digital relief model resolution of 1 × 1m and the LS topographic factor calculation algorithm according to the author McCool [1].
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High order numerical method in modelling and control systems
Veigend, Petr ; Horák, David (referee) ; Schirrer, Alexander (referee) ; Šátek, Václav (advisor)
Systémy pro řízení a regulaci jsou používány téměř ve všech průmyslových oblastech. Pro jejich modelování se často používají diferenciální rovnice, které popisují dynamické chování těchto systémů a umožňují je detailněji analyzovat z hlediska přesnosti, stability, výkonu a reakcí těchto systémů v reálném čase. V této oblasti se běžně nepoužívají metody vyšších řádů, protože vykonávají velké množství operací. Tato práce zkoumá numerické řešení obyčejných diferenciálních rovnic s použitím metody s proměnným řádem a proměnnou velikostí kroku, která je založena na Taylorově řadě. Metoda je navržena jak pro lineární, tak pro nelineární problémy a jsou implementovány její optimalizace pro snížení výpočetního času bez degradace jejích vlastností. Pozitivní vlastnosti metody jsou demonstrovány na sadě příkladů z technické praxe. Výsledky práce ukazují, že metoda založena na Taylorově řadě může být použita v oblasti řízení a regulace a má lepší vlastnosti než běžně používané metody.
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HIL test stand for universal electronic control units
Zouhar, Štěpán ; Musil, Filip (referee) ; Brablc, Martin (advisor)
This diploma thesis is focused on testing of Electronic Control Units, especially functional testing in which hardware and software is verified and also Model in the Loop, Software in the Loop, Processor in the Loop and Hardware in the Loop testing methods. Within practical part of this thesis testing stand for functional test of the ECU was developed and manufactured. It is connected to PC via Input/Output card, testing is controlled by MATLAB script. Whole process of testing is automated from initial upload of testing firmware to tested ECU over all phases of test up to bootloader flashing. Hardware in the Loop test was also created, in which ECU works as controller and DC motor is simulated in real time with PC in MATLAB environment.
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Application of discrete simulation in support of the conveyor technology design
Prokop, Aleš ; Štoček, Jiří (referee) ; Škopán, Miroslav (advisor)
This diploma thesis deals with analysis of current state of the paint shops M11A and M11B in Mladá Boleslav and following creation of the universal simulation model of the paint shop M11A in the company Škoda Auto a.s. by which availability of daily production in different input parameters will be verify. The model of the paint shop M11A will be created in system SimPro which comes under the programs working with discreet simulation. The model input parameters will be defined in the program Excel. According to these experiments will be possible realized a detailed analysis of results of the simulation.
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