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Mechatronic system for presentation of damped oscillation
Sirota, Tomáš ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This work is aimed to creating a system for presentation of oscilations. The main part consist of electromagnetic damper, which properties are suitable for use in this system. In the first part are some conditions for design of damper body . In he second part are selected next parameters for electromagnetic damper and of the whole system by MATLAB / Simulink with iterative method. In last part is whole system analyzed and the results indicate next changes in the structure of the system.
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Analyses of Mechanical Tasks in SolidWorks Motion
Cikánek, Pavel ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
The main goal of this thesis is to create and to simulation the samples from area of the kinetics and the dynamics in CAD system in order to be used as the teaching models. The examples will be created as simply and easily rebuilt 3D models in CAD program SolidWorks and they will be analysed in the Motion modul. The main task is to compare the results from SolidWorks Motion program with the current solution, eventually with the other CAD system. At the end the advantages and the disadvantages of SolidWorks Motion program will be evaluated.
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Design of electromagnetic laboratory shaker
Vaněček, Michal ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
My thesis describes the design of a laboratory electromagnetic vibrator, which will be used for testing of the vibrating microgenerators. In the first part of my thesis is the search of selected laboratory electromagnetic vibration generators. There is also formulated its own proposal and subsequent tuning of the required dimensions and characteristics of the laboratory electromagnetic vibration generator. The tuning of necessary properties and dimensions is formed as modeling and simulating in programms Matlab / Simulink and ANSYS. The conduct of laboratory electromagnetic vibration generator is implemented in MATLAB / Simulink. Design and dimensions of the laboratory electromagnetic vibration generator is made in SolidWorks.
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Simulation Modelling of Manipulator Mechatronic System in ADAMS
Foriška, Aleš ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with the simulation modelling of manipulator mechatronic system in ADAMS. The beginning of thesis is dedicated to the theoretical study of the compute modelling electro-mechanical systems and mechatronics approach modelling manipulator’s systems. Next chapters describe the creation of kinematics model of the manipulator with using ADAMS and proposal supporting frame in ANSYS/Workbench environment. The next step, manipulator and supporting frame simulation model is created for the computing vibration a dynamic analysis. At the end of this thesis is used cosimulation ADAMS and Matlab/Simulink for the control of synchronous drivers of manipulator.
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Simulation modeling of parallel mechanisms
Cintula, Ladislav ; Houfek, Lubomír (referee) ; Březina, Lukáš (advisor)
Parallel mechanisms are characterized by their kinematic structure presented a closed kinematic chain. The end effector of mechanism is then bound to a base of over one arm. This design provides an advantage especially at high stiffness of mechanism and related properties. The disadvantage of such a structure is then usually very limited working space. In terms of simulation modeling is the construction due to its complexity rather problematic. The aim of work is design comprehensive simulation model chosen parallel mechanism and its analysis in selected working modes. Expected to use Adams simulation environment, if necessary. Matlab - SimMechanics and Ansys.
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Virtual prototype of mechatronic system
Dinga, Milan ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with modeling of delta 3D printer virtual prototype and its co-simulation using software ADAMS and MATLAB/SIMULINK. The first part consists of virtual model creation and its kinematic analysis. Then a model of electric motors is created. The final part consists of co-simulation and control design.
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Simulation anlysis of turbocharger vibrations
Valo, Lukáš ; Lošák, Petr (referee) ; Březina, Lukáš (advisor)
The master thesis deals with computational modeling of a turbocharger vibrations and and assessment of influnce of passive dynamic vibration absorber on vibrations of actuator bracket. The use of dynamic vibration absorber was summarized in the research study. The analysis were performed using finite element method in ANSYS. Several computational models of turbocharger were created with different ways of modeling bolted joints between turbocharger parts. Modal analysis of each model was performed and the results were compared. For the selected model, the response to the kinematic excitation from the internal combustion engine for two load conditions was calculated using harmonic analysis. A simple model of vibration dynamic absorber was applied to the turbocharger model with reduced degrees of freedom and its influnce on vibrations of actuator bracket was investigated. Significant decrease of the maximum acceleration amplitude was achieved in a given frequency range when absorber parameters were optimized.
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Taxi service back-end
Březina, Lukáš ; Bureš, Tomáš (advisor) ; Bednárek, David (referee)
Nowadays services like Uber start to surpass taxi companies in comfort of transport. In this thesis, we create a back-end part of an application for taxi companies in smaller towns. This application provides an interface for creating and managing orders, employees, customers, and vehicles. As part of the system, we constructed order scheduler which calculates the order duration, estimated time of arrival and distributes the order between available drivers automatically. Overall the application increases the taxi company's efficiency and offers users a more comfortable experience.
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Dehumanization as a risk factor for the use of digital technologies in the context of social work
Brezina, Lukáš ; Vrzáček, Petr (advisor) ; Müller, Karel (referee)
The thesis deals with the threat of dehumanization when applying digital technologies and robotics into social work. The work focuses on the history and origin of digital technologies within the context of social changes. It explores the basic rules governing elementary functioning and development of digital technologies and robotics. The thesis describes and summarizes basic information about the possibilities and risks of using digital technologies and robotics within social work. Towards the end it also includes opinions of several professional and political authorities who are active in this topic. This thesis aims to trigger the debate over the possible threats connected to dehumanization of social work and the use of digital technologies and robotics, respectively make it more intensive.
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Introduction of loadcase „Creeping“ to a multi-body simulation
Volek, Matěj ; Lošák, Petr (referee) ; Březina, Lukáš (advisor)
Tato diplomová práce je zaměřena na implementaci procesu simulace zatěžovacího zatížení do stávajícího rozhraní používaného pro multi-body simulace hnacího vozidla. „Creeping“ bylo definováno jako řízení vozidla bez nárazu na plynový pedál v nízkých převodech. Bylo rozhodnuto simulovat tento stav zavedením sil Jízdních odporů – Aerodynamická odporová síla Fa, síla Valivého odporu Fr a horizontální část Gravitační síly Fgx. Tyto síly byly modelovány v softwaru SimulationX a byl definován model pro zatížení „Creeping“ – ten byl založen na změně stoupání kopce, což dalo výsledky potřebné pro analýzu chování při stavu „Creeping“. Poté byly vytvořeny soubory v softwaru Matlab potřebné pro běh a následné zpracování simulace, které analyzují výsledky v závislosti na čase nebo průměrném točivém momentu motoru. Potom byla správnost procesu kontrolována ve srovnání s experimentálními daty. Toto srovnání ukázalo, že proces pracuje bez velkých problémů; výsledky vykazovaly podobný trend, byly ale ovlivněny nedostatkem vstupních dat z experimentu.
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