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Model of electric furnance for heat-resistant material processing
Franek, Lešek ; Malounek, Petr (referee) ; Dvořáček, Martin (advisor)
Content of the document is to create model of kiln, compare result with the real kiln. There is described 3D design in SolidWorks application, creation of a physical model in COMSOL Multiphysics and its export to Simulink. Subsequently is described the Simulink scheme, functions of program parts and visualization in B&R Automation Studio. The obtained results are compared with measured values. There is also described the design of a controller with a off-line identification.
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Investments of the Automotive Industry in Precious Metals as Strategic Materials
Dvořáček, Martin ; Plíhal, Tomáš (referee) ; Rejnuš, Oldřich (advisor)
The subject of the thesis is the investment recommendations of companies operating in the automotive industry to purchase strategic raw materials, such as in particular platinum, palladium and rhodium. Thesis include a theoretical description of the topic, respectively certain forms of hedging, instruments used to hedge and brief characteristics of precious metals. Analytical and proposed section of the thesis contains specific methods, procedures and its own approach used to meet the global target of thesis.
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Fundamental Anylysis of Selected Stocks
Dvořáček, Martin ; Henešová, Šárka (referee) ; Sojka, Zdeněk (advisor)
This thesis deals with the fundamental analysis of stocks selected Telefónica Czech Republic a.s. This paper contains a theoretical description of the use of fundamental analysis including a description of the specific models use dinfundamental analysis as a tool for determining the intrinsic value of traded shares. In the practical part I apply this analysis to the selected share with the help of publicly available information.
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Control and visualization of techlologic process via IPC
Buchta, Luděk ; Libor, Matys (referee) ; Dvořáček, Martin (advisor)
The aim of this bachelor’s thesis was to acquaint with techniques and technologies used in the control and visualization of technologic processes. The industrial PC, PLC and Automation Panels from the company B&R was used on control of the technologic process in laboratory E541. Designed and implemented control algorithm contains three discrete controllers. The standard OPC is used for communication. Visualization for control workplace is created in the Program Control Web. Visualizations for operator workstations are created in the program Automation Studio. These visualizations are used to transfer information from the technological process.
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Robust Controllers
Dobias, Michal ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
This thesis tries to research the term “robust controllers”. Its aim is to compare the robustness of discrete PID controllers (Discrete Equivalent Continuous Controller, Discrete Impulse Area Invariant, Takahashi, Feed-Forward), adaptive discrete PID controllers (Discrete Impulse Area Invariant, Takahashi, Feed-Forward), optimal controllers (quadratic optimal), and adaptive optimal controllers (quadratic optimal) on chosen transfer functions. Its aim is also to check the influence of A/D and D/A converters. The aims to obtain are demarked at the beginning of the text and also there is an explanation of the term “robustness.” Later on there is a description and an approximation to each of the chosen kinds of controllers and the identification methods used in the thesis (for adaptive controllers the method of recursive least-squares was used). The Kharitonov's Theorem are made on the chosen transfer function. Next there is a description of the methods with which the robustness of the controllers will be tested. The first method is the integral criteria, particular ITAE criterion and quadratic criterion. The second one is the analysis of the generalised circle criterion. Furthermore there are various displays of the results obtained and their corresponding comments. The results obtained are graphically displayed and by means of these schemes the particular types of controllers are compared. All of the simulations and results obtained were acquired through the use of the program MATLAB- Simulink. In the end of the thesis there is an overall evaluation.
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Comparative study of discrete PSD controllers
Pelikán, Leoš ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
This bachelor thesis deals with verification of heterogeneous structures of discrete PSD controllers on different process structures. Description of controlling system and various structures of PSD regulators is in theoretic part. The practical part of thesis describes progress testing, particular results and compare with adaptive an adaptive controller of B&R company.
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Modeling of system motors with flexible component
Lebeda, Aleš ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
This thesis deals with problem of experimental identification using principles of artificial intelligence and development of nonlinear models. It shows how to estimate parameters of nonlinear models and it compares different types of nonlinear models based on analytical analysis which were developed from measured data in simulation and real system motors with flexible component.
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Model of DC motor
Turanský, Luboš ; Dvořáček, Martin (referee) ; Chomát, Luděk (advisor)
In this work is described essential division of electric motors and possibilities of their regulation. In detail is shown how was obtained mathematical model of DC motor and its implementation to Matlab/Simulink. Subsequently is described how was created hardware and firmware of model which is simulating behavior of described DC motor. Final model is connected with PLC. For PLC is created visualization which allows monitoring of regulation process and changing PSD regulator parameters. Last part of the work is model manual and task laboratory exercise for the model.
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