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Three-phase converter for synchronous servomotors
Perout, Miroslav ; Folprecht, Martin (referee) ; Červinka, Dalibor (advisor)
This diploma thesis is dealing with the design of a DC / AC converter for the control of PMSM motors. In the first step, the type of motor and the possibilities of sensing the position of the rotor are described. Subsequently, the power section is designed and the losses, heating, and approximate efficiency of the inverter are calculated. In the following step, the processor is selected and individual communication and protection circuits are designed. At the same time, control algorithms are analyzed. The last part is describing the implementation of the PCB and the inverter as a whole.
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Electric drive of testing bench
Jon, Václav ; Vrba, Jaromír (referee) ; Koláčný, Josef (advisor)
The master thesis deals with problems of electrical gears divided to the teoretical and practical part of submitted work. Thesis was created in conjuction with company VUES Brno s.r.o. The author of the master thesis accomplished three-month work experience at aforementioned company and consequently solved the national project: Automatic station with utilization of active synchronic brakes for testing electrical hand-held tools. The project included creating full-automatic station for testing life-time cyclic tests electrical hand-held tools. The author of the project engage in programme for frequency transmitter served as headstone of the master thesis.
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Three-phase converter for synchronous servomotors
Perout, Miroslav ; Folprecht, Martin (referee) ; Červinka, Dalibor (advisor)
This diploma thesis is dealing with the design of a DC / AC converter for the control of PMSM motors. In the first step, the type of motor and the possibilities of sensing the position of the rotor are described. Subsequently, the power section is designed and the losses, heating, and approximate efficiency of the inverter are calculated. In the following step, the processor is selected and individual communication and protection circuits are designed. At the same time, control algorithms are analyzed. The last part is describing the implementation of the PCB and the inverter as a whole.
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Online DNSSEC Records Validation
Bachtík, Martin ; Čejka, Rudolf (referee) ; Lampa, Petr (advisor)
Master's Thesis is studying an extension that secures the domain name system by introducing the verifiability of authenticity of data, known as DNSSEC. Productive output is proposal of application and its subsequent implementation that at each stage of browse the namespace to the selected domain name checks the appropriatenesses of this extension and in detail reports the trusted chain.
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DNS Resolver Testing
Široký, Filip ; Pluskal, Jan (referee) ; Grégr, Matěj (advisor)
Tento dokument popisuje automatizaci tvorby scénářů pro nástroj Deckard, který slouží na testování rekurzivních resolverů. Tyto scénáře jsou založeny na skutečném provozu mezi prohlížečem a webovou stránkou zachyceném při načítání této stránky. Výsledný scénář je doplněn i o dotazy, které v zachyceném provoz nebyly, ale na které by se resolver mohl ptát například při minimalizaci dotazu. Na rozdíl od živého provozu by použití scénářů mělo zajistit deterministické prostředí pro testování. Reálný provoz není pro testování ideální kvůli například rotaci IP adres, rozdílnému obsahu serverů a úpravy obsahu. Scénář by měl obsahovat všechny odpovědi na dotazy, na které by se resolver mohl zeptat. S vygenerovanými scénáři můžeme porovnávat odpovědi různých implementací a verzí DNS resolveru. Můžeme tak odhalit změny v jejich chování.
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Client side DNSSEC deployment
Nekuža, Karel ; Smékal, David (referee) ; Martinásek, Zdeněk (advisor)
Diplomová práce se zabývá problémem přístupu koncového uživatele k odpovědím ověřeným pomocí protokolu DNSSEC. Práce posuzuje možnosti nasazení a nastavování resolveru za účelem zlepšení bezpečnosti pro koncové uživatele. V práci je navrhnuto řešení problému pro operační systém Fedora Workstation. Navrhnuté řešení je realizováno a porovnáno s již existujícím řesením.
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Control of industrial robot drives by KEBA systems
Heinrich, Martin ; Pochylý, Aleš (referee) ; Kubela, Tomáš (advisor)
This diploma thesis deals with the implementation of the KeMotion control system of KEBA company for industrial robot KUKA KR 15/2. It gets to work original robot's drives KUKA with this new system. There was a communication network built up to operate the system itself. It was created between driving system component. Next step was a creation of the connection between control case and a new control system especially robot link up feedback. Later on there was a control programme for PLC created and adjusted including configuration of drives and converter. There was a need to find out the resolver parametr to this settings That one is used to the indirect measurement.
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Rotation speed sensor
Dudáš, Juraj ; Knobloch, Jan (referee) ; Prudík, Martin (advisor)
This bachelor thesis is aimed on rotation and position sensing of rotating devices topic. The thesis is devided into theoretical and practical part. The first theoretical part deals with rotation and position sensing, sensing possibilities and types of rotation and position sensors. The next thing in this part is about market possibilities and research in sphere of these sensors. In the practical part of the thesis is realized the rotation and position sensor. In the introduction of this part are defined the main parts, which are going to be used in this device. Afterward are these parts used in the scheme of wiring diagram and printed circuit board. Next in the thesis is described the manufacturing of the device it’s programming and functioning. The practical part ends with the test of the device. In the conclusion are the process of the thesis and reached results evaluated
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