|
|
Tool for Modelling and Simulation of Technologic Processes
Skydánek, Libor ; Zbořil, František (referee) ; Kočí, Radek (advisor)
This thesis focuses on the problem of technological process modelling and simulation. It is based on the realistic requirements of the Faculty of Mechanical Engineering, where they lacked an extensible and open simulation tool with the ability to model biomass processing. In this work we explain the main concepts in the field of (physical) chemistry, the systematic approach to process modelling and simulation and we discuss various problems of simulation methods. We also describe the differences between simulation and design specifications and give reasons for choosing the sequential modular approach. An important part of the work is aimed at the design of the simulation tool's architecture, where the main emphasis is laid on the extensibility of future application. The tool has been implemented and it is now sucessfully being used at the Faculty of Mechanical Engineering.
|
|
|
Pending Event Set Implementation
Kozovský, Daniel ; Hrubý, Martin (referee) ; Peringer, Petr (advisor)
This work aims to create a library in C++, which implements various variants of the pending event set, which is used in discrete simulations. The library includes nine different implementations of the pending event set, accessible through a single interface. This interface is designed to make it easy to extend the library with additional implementations. In addition to the library itself, the work also describes the design of the test application and evaluates the time complexity of individual implementations.
|
|
|
Modelling of organic electrochemical transistors
Truksa, Jan ; Omasta, Lukáš (referee) ; Salyk, Ota (advisor)
The topic of this work is the making of a virtual model of a circular organic electrochemical transistor (OECT) and its electric field, and comparison of the computed results to a real system of rotationally symmetrical electrodes. The electric potential field in the transistor was modelled using the finite element method and the electric field and current field were determined using the results. Later, the electric potential field was mapped in a real system of aluminium electrodes, submerged in water. The electric field model of an unusually configured circular OECT is presented in this work. Due to insufficient computing capacity, the model had to be significantly simplified. The computed results agree with the experimentally determined potential field despite the simplification. The deviations of the model output characteristic from real OECT characteristic were caused by simplifying the model in respect to reality.
|
|
| |
|
|
Data Monitoring for Production Process Modelling
Havelka, Martin ; Opletal, Tomáš (referee) ; Videcká, Zdeňka (advisor)
The abstrakt of this bachelor thesis is presenting of the simulation method with focus on data collection in company ALPS ELECTRIC CZECH, s.r.o. Thesis briefly introduces the questions of manufacture process simulations. It shows what data are required for making real models, in what way are these data capable of being measured and filed.
|
|
| |
|
|
HV grid model in PSCAD
Tomšů, Vojtěch ; Ptáček, Michal (referee) ; Kopička, Marek (advisor)
This thesis deals with the issue of computer modelling and electroenergetic calculations. The first part focuses on the description of the PSCAD program and selected competitive software. There are listed main characteristics, usage and subsequently the overall comparison of the programs with potential use in electroenergetic industry. It also lists the basics of PSCAD and description of its working environment. Another section deals with the calculation of parameters of overhead lines, transmision lines substitute with pi-section and the process of pi-section phasor diagram construction. In the next part, there is a model of HV grid in the form of pi-section. As reference values for simulation were used values from exercise of the subject Distribution of electric energy. Output values obtained from the simulation in PSCAD were used to create a phasor diagram in Matlab. The last part focuses on the issue of calculating the natural power, cascade and parallel sections sorting and a simple case of three-phase fault.
|
|
|
Physical Discretization Modelling of Shrinkage
Bedáň, Jan ; Keršner, Zbyněk (referee) ; Frantík, Petr (advisor)
The aim of this thesis is design and programming of a numerical model of shrinkage of cement composites using physical discretization and solved by parallel processing. Introduction is about the shrinkage of cement composites and explanation of terms, which are included in this thesis. The main part deals with programming of the output model, the procedure of its creation and the results of simulations.
|
|
|
The new function utilization of Autodesk Inventor for electrical machines modeling
Benetka, Martin ; Janda, Marcel (referee) ; Hájek, Vítězslav (advisor)
This Bachelor’s thesis is focused on the use of Autodesk® Inventor® 2012 for the modelling of electrical machines, the triggers which are used to start engines specifically in my work. The theoretical part consists of types of triggers, their operating principles, construction, advantages and disadvantages of their using. A reach trigger with pull-armature servis animation was created using Autodesk® Inventor® 2012 as a demonstrative model of fuction of this trigger in the practical part of this thesis.
|
|
|
Signal processing in ZigBee system
Miloš, Jiří ; Bradáč, Zdeněk (referee) ; Hanus, Stanislav (advisor)
Master's thesis The Signal Processing in ZigBee System is focused on properties of Physical Layer of ZigBee (standard IEEE 802.15.4 - 2003). The work consists of three parts. The first part contains common view on using and properties of ZigBee. The next part focuses on the Medium Access Control Layer and in detail on the Physical Layer. There described signal processing in the Physical Layer in individual radio bands. The last part of the project contains the process of modeling in the MATLAB for both models of system ZigBee (bands 868/915 MHz and 2450 MHz). The last part of thesis deals with the simulations of BER depending on Carrier-to-Noise Ratio. Also examined the coexistence of systems operating in the same or a nearby frequency band. Based on the results of simulations there are given recommendations for the use of the ZigBee system in minimizing BER.
|
guest ::
