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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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Complex model of electro-mechanical system
Marton, Filip ; Vlach, Radek (referee) ; Huzlík, Rostislav (advisor)
This bachelor’s thesis deals with complex models of electro-mechanical systems. It consists of literary research about model-based diagnostics and of a practical part dealing with the creation of the given model of DC motor with electrical, mechanical and heat part by using Simscape libraries in a software Simulink. The whole thesis ends with the evaluation of results and the use of the model in practice.
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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 A simple model of the transformer has been replaced by rezistor network conductivity, which is divided into elements.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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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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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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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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Design of control circuit for towing dynamometer
Rýznar, Jan ; Němec, Zdeněk (referee) ; Cejpek, Zdeněk (advisor)
This bachelor’s thesis is focused on design of a control circuit for a towing dynamometer. In the introductory part of the thesis is a detailed description of the towing dynamometer, including its main parts, which are necessary for proper operation. The next chapter is devoted to creating a dynamic model of an existing prototype using Simscape. Furthermore, based on the conditions from the dynamic model, a control circuit is designed, which is introduced in the form of a program into the control unit of the towing dynamometer. Based on the measured data from the transient responses, the function of the controller is gradually tuned to a satisfactory result. Finally, the function of the control circuit is evaluated and then measures to improve the stability, quality and accuracy of control are proposed.
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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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Coupled model of transformer
Adamec, Lukáš ; Huzlík, Rostislav (referee) ; Vlach, Radek (advisor)
The bachelor's thesis deals with the creation of a coupled model of transformer in the Matlab system. The coupled model connects two basic physical domains - electricity and heat transfer. It all starts with the selection of suitable equivalent circuit diagrams that represent the electrical and thermal properties. Their connection is then called as coupled model, which captures their mutual influence. An important part of the thesis is the identification of elements (thermal resistances and capacities, stray inductance, etc.) of equivalent circuit. Open-circuit and short-circuit tests are used to identify electrical elements, thermal elements are then determined from the temperature curves of the sub-parts of the transformer – core and winding. The goal of the thesis is that the output of the coupled model corresponds as closely as possible to the behavior of a real transformer. Compliance is verified by the final simulation.
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