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ECG generator for equipment testing
Čech, Petr ; Rampl, Ivan (referee) ; Chmelař, Milan (advisor)
This diploma thesis is focused on testing ECG monitors and ECG instruments. There are discussed origin and charakteristics of ECG signal. The ECG signal is presented by standard leads. This is the reason, why the way of making leads is mentioned. One chapter is aimed at generating ECG signal. There are set requierements for the ECG generator. These requierements results from ECG instrument possibilities and from ECG signal character. Next part of this diploma thesis includes hardware design of each part of the system. The system was designed with respect to mobility and 12-leads systems compatibility. Finaly the thesis includes design of the controll software.
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Traffic Modelling Based on Cellular Automata
Hodaňová, Andrea ; Martinek, David (referee) ; Peringer, Petr (advisor)
Among many other fields of science, cellular automata play an important role also in the microsimulations of traffic. In this thesis, we analyze the characteristics of a wide range of cellular automata traffic models from the most simple deterministic ones to complex stochastic automata derived from the pivotal Nagel-Schreckenberg model, which is thoroughly described. As a result of this analysis, a generally usable traffic simulator is designed and implemented in the Java programming language. Its graphical user interface can visualise the state of a road CA to display the key features of the implemented traffic models to the user.
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Development of technologies for 3D printing of concrete structures
Roupec, Josef ; Hela,, Vlastimil (referee) ; Hela, Rudolf (advisor)
Subject of dissertation was to itemize testing methods in fresh and hardened state of cement paste or concrete. During this process some new testing methods and specimen creation protocols were proposed. Further was created list of used materials and mix design processes which led to list of used 3D printing mixture designs and 3D printers. Next part of dissertation was devoted to creation of 3D printing mix design and observations based on them. At~the end is proposed a radical change in testing methods which utilizes latest advancements in computer science and could be part of digital design process for construction.
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Mathematical modeling of a wind turbine
Osička, Aleš ; Mastný, Petr (referee) ; Radil, Lukáš (advisor)
The aim of this paper is to acquaint the readers with basic classification of wind turbine configuration by used electric generator, with speed and power control used in power plants and with mathematical model of wind and parts of power plant. Procedure of making model in applications Mathematica and MathModelica is described in the other part of this paper. There were made models of power plants with squirrel cage asynchronous generator, one with pitch control, the other with stall control. In the last part of the thesis comparison of model behavior of both models with the same input conditions was made.
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Modelling and control of wheeled mobile robots
Sypták, Michal ; Šembera, Jaroslav (referee) ; Šolc, František (advisor)
Control of wheeled chassis does not constitute a problem in the area of mobile robotic solely. Rather, it can be encountered in transportation, both at close range and long range. In this thesis, mobile chassis are characterized as kinematic models. These models prove to be erroneous at high speed, whereas they sufficiently accurately represent the real robotic system in situations when slow, autonomous motion of the robot is desired. In comparison with dynamic models, both their project and implementation are simpler, too. The first part of this thesis is focused on a basic description of the motion of a robot in-plane. In the next part, five, most frequently used wheels in robotics are described and characterized - standard fixed wheels, standard steering wheels, castor wheels, multidirectional wheels and omnidirectional wheels. The motion conditions are deduced from each type of wheel. There are two methods of projecting the mobile robot model – full modelling and generic modelling. Based on these two methods, six models of mobile robots with different motion properties are proposed and described. The last and most extensive part of this thesis deals with simulator of robot motion created in Matlab/Simulink. It includes users guide which allows the configuration of random chassis and various trajectories of motion. In this way, it is possible to visually evaluace and classify the the different types of robots. The core of this thesis is largely connected with the field of odometry – i.e. transformation output from speed sensor and turning of wheels sensor into the robot position in the system of coordinates that defines its working space. Simulator as complex only model motion of mobile robots in plain. Its inside structure included algoritms, that have been used in praxis for control real mobile robots. In this way created Simulator models the motion of mobile robots in-plain only. However, its inside structure is based on algorithms, that could be used for control of real mobile robots in real-life working.
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Comparative Analysis of Modelling of Reinforced Embankment Face
Fryš, František ; Glisníková, Věra (referee) ; Boštík, Jiří (advisor)
The thesis deals with numerical modeling of reinforced earth wall. The first part of the thesis characterizes and describes these constructions in general and also describes variations of their faces. In the next part the modeling of basic reinforced earth wall construction elements in Plaxis 2D is described. Subsequently the real reinforced earth wall is modeled and some variations of face-modeling are compared.
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Simulation and Design of Intelligent Agents
Šperka, Svatopluk ; Rozman, Jaroslav (referee) ; Janoušek, Vladimír (advisor)
Conventional method of development which repeats phases of design, implementation and testing is not adequate for systems like intelligent agents for which complex behavior is required but specification is unclear at the beginning of development process. Incremental design of agent's model during simulation seems more suitable for it enables direct feedback in behavioral changes of a system. This interactivity speeds up development process and helps to uncover parts of a space of all models to designer - thanks to new knowledge acquired during simulation. This thesis aims to provide comparison of suitability of two agent architectures and respective platforms in context of SmallDEVS modeling and simulation framework for this methodology of development. First approach is reactive and decentralized subsumption architecture based on DEVS formalism and the second one is PNagent, framework realizing deliberative BDI architecture using Object Oriented Petri Nets.
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Modelling and HIL Simulation of Vehicle Boot Door Control
Musil, Filip ; Matějásko, Michal (referee) ; Brablc, Martin (advisor)
This diploma thesis focuses on an analysis, a model creation and simulations of a car boot door mechanism. The problem was analyzed on the basis of real measurements made on three different vehicles. Based on the measurements, computational models describing the real system at different levels of complexity were created. Matlab/Simulink was used to create and calculate the models. The output of the thesis is the simulator of a car boot door which also includes simplified model of a control unit. The simulator should provide an approximation of current and kinematic quantities of these mechanisms. The model is implemented on dSPACE platform that allows real-time simulations. The simulator can be modified in terms of changing the parameters of the mechanism and modifying some of its results.
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The study the behavior of the reinforced soil block under the concentrated load
Prechtlová, Kateřina ; Kliš, Lumír (referee) ; Miča, Lumír (advisor)
This thesis deals with numerical 3D modeling of reinforced earth block under concentrated wheel load. This is a parametric study, which varies entering face and load position and even his own task. And either by simplification of the CSN 73 0037 or directly. At the beginning briefly describes the construction of reinforced soil in terms of history, application, construction, and properties of materials from which the structure is formed. Attention is also paid to static action and methods of spreading of a concentrated load to earth block. structural design using analytical methods is also part of the thesis
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