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Mathematical model of a climatic chamber
Hort, Tomáš ; Bartík, Ondřej (referee) ; Veselý, Libor (advisor)
The objectives of this bachelor thesis are designed and verification matchematical model climatic chamber - incubator. In the beginning, the I2C communication bus is decribed. Then, the humidity and temperature sensors are analysed. Measuring and controling system CompactRio is used for processing data, program Labview is used for programming. Identification of system and designing matchematical model is accomplished in System Identification Toolbox. In the next part, the methods of heat transfer are discussed. The thermal analysis of the system was used to build a physical model in Simulink - Simscape Thermal. The last chapter is focused to the creation of a compact datalogger designed for long-term recording of measurements in an incubator.
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Models of DC transistor converters in Simulink program
Loup, Martin ; Pazdera, Ivo (referee) ; Huták, Petr (advisor)
The master’s thesis is focused on the creation of models of DC/DC converters and control program for input parameters and their configuration. The first part is theoretical and she is dedicated to the description of the program Matlab. The second chapter is dedicated to DC/DC converters. Their function is described there and the necessary equations for the design are derived. All of this is complemented by the calculation of line losses in semiconductor elements and the design of voltage and current regulator. The last two parts deal with the description of the created models in Simulink and control program in a graphical environment. The created program is able to edit and recalculate parameters of the converters, calculate line losses on semiconductor components, perform a model simulation or open it.
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Matlab Models of DC/DC Converters
Macík, Tomáš ; Cipín, Radoslav (referee) ; Pazdera, Ivo (advisor)
The Bachelor’s thesis is focused on modeling of DC/DC converters without a transformer using Matlab Simulink software. The first part is dedicated to general explanation of function of selected switch mode power supplies. The second part contains the deduction of equations for every selected switch mode power supply and design of circuit components based on required converter parameters. The models of converters have been created in Matlab Simulink using deduced equations. The models of STEP UP and STEP DOWN converters have been created also using Simscape Power Systems Toolbox and the control of current and voltage has been designed for them.
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Building control system with Saia PLC
Rejchlík, Lukáš ; Richter, Miloslav (referee) ; Kaczmarczyk, Václav (advisor)
This thesis deals with the basics of intelligent building control using programmable logic controllers. The work focuses especially on heating and lighting on buildings. First part is dedicated programmable logic controllers and visualization. There is also a description of the protocol S-Bus used by Saia products. The following section contains calculations the heat loss of buildings and design of thermal model object created by Simscape libraries for Matlab/Simulink. For room temperature control is designed PI regulator. The control of the building is realized by the PLC Saia. Visualization is displayed on the touch panel.
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PMSM Modeling in Non-standard Situations
Daniel, Martin ; Otava, Lukáš (referee) ; Václavek, Pavel (advisor)
There is an increasing use of synchronous motors with permanent magnets in industrial applications. Therefore, it is also required simulation of the behavior of these engines in non-standard situation. We want to prevent destruction of the engine thanks to these simulations. Waveforms of signals are the result of the simulation. The bachelor thesis deals with a design of simulation schemes. Specifically, is about the short circuit phases at the input of the engine, disconnect engine from the source and change duty cycle of inverter. One part of the thesis belongs to a creation of user interface for setting the technical parameters of the engine and an activation of simulations with using the created simulation schemes.
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Room Temperature Advanced Control Algorithms
Glos, Jan ; Graf, Miroslav (referee) ; Václavek, Pavel (advisor)
This bachelor's thesis deals with constructing a thermal model of the specific room and algorithms design for heating and air conditioning. The model is created using Simscape extension for Matlab/Simulink and is based on real attributes of room and its walls (materials, dimensions etc.). This thesis contains design of MPC (Model Predictive Control) and PI controllers. In comparison with the original regulation designed controllers achieve better quality of control and MPC controllers seems to be the best. Because of preliminary for integration of split air conditioner, possibility of control actuators by MPC controller and because of necessary setpoint separation (for heating and air conditioning) software equipment of the individual zone controller was revised.
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Modeling of Dynamics of the Part of a Printing Machine
Junek, Jiří ; Šolc, František (referee) ; Václavek, Pavel (advisor)
This thesis deals with modeling dynamics of printing machine, made by SOMA Engineering, in toolbox SimScape of simulation program Simulink/Matlab. There are descibed properties, progress, important principles and laws of modeling in this toolbox. The first part is focused on creating models, which consist as mechanical as eletrical and control parts. In the second part is explained how to create user interface to control models and creating standalone application, executable without installation of Matlab or Simulink. In last part is explained principle of identification parameters of material from the measured data, using an optimalization algorithm Nelder-Mead. Created models and identification algorithm are controlled via user interface.
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Magnetic field calculating of transformer by using conducting model
Bláha, Martin ; Skalka, Miroslav (referee) ; Kurfűrst, Jiří (advisor)
The paper deals with conductivE-resistive network. Use of this network is modeled transformer. The model is implemented in simulation program PSPICE and Simscape. To evaluace the results were used the values obtained using the finite element method. A simple model of the transformer has been replaced by rezistor network conductivity, which is divided into elements. According to these elements is a simplified model designed and analyzed
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MEMS Thermoelectric Generator for Aerospace Applications
Janák, Luděk ; Opluštil, Vladimír (referee) ; Hadaš, Zdeněk (advisor)
Tato diplomová práce se zabývá vývojem autonomního zdroje elektrické energie založeného na MEMS termoelektrickém generátoru. Uvažovaný generátor bude následně použit pro napájení autonomní senzorické jednotky pro letecké aplikace. Systémový pohled na autonomní senzorickou jednotku zahrnuje senzor se zpracováním a přenosem dat, energy harvester (termoelektrický generátor), power management, akumulační prvek a autodiagnostiku. Všechny výše uvedené komponenty jsou v práci podrobně popsány. V úvodu práce je provedena široká rešerše existujících termoelektrických generátorů pro letecké aplikace. Následně jsou popsány základní teoretické poznatky z oblasti DC/DC měničů pro energy harvesting. Zvláštní pozornost je věnována metodám MPPT (Maximum Power Point Tracking). Jako základ pro vývoj napájení autonomní senzorické jednotky bylo provedeno množství simulací za pomoci nástroje MATLAB/Simulink Simscape. Pro identifikaci prametrů modelu posloužilo měření na speciálním přípravku. Praktická implementace teoreticky popsaných problémů je provedena na k tomuto účelu navrženém technologickém demonstrátoru. Závěrem je zhodnocena reálná využitelnost navržené technologie pro finální aplikaci v leteckém průmyslu.
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Model of electric vehicle in SIMULINK/SIMSCAPE program
Kachlík, Jan ; Klíma, Bohumil (referee) ; Huzlík, Rostislav (advisor)
The topic of this diploma thesis is mathematical model of electric vehicle. The traction drive consists of Li-Ion battery, free-phase DC/AC converter and permanent magnet synchronous machine. The main goal of the thesis is development of function model and making simulations in SIMULINK/SIMSCAPE program. Work is divided into three main parts. The first part is dedicated to the theoretical description of the main drive components. The second part describes partial subsystems of the model. In the last part is build a complete model of electric vehicle and simulated different driving mode.
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