National Repository of Grey Literature 27 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Control board for educational laboratory stand
Cejpek, Miroslav ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
This work deals with the design scheme and printed circuit boards for drives teaching laboratory Stand, for teaching at the Department of Power Electrical and Electronic VUT Brno.
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.
Control system of laboratory stand for educational purpose
Ondrejček, Vladimír ; Procházka, Petr (referee) ; Červinka, Dalibor (advisor)
This thesis proposes control circuit, that will be used in laboratory stand. The first part contains components that interact with the control circuit. The second part deals with the actual design of the control circuits, their design, appropriate selection of components and wiring. Third part deals with the assembly of the entire device and its commissioning.
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.
DNS client application with a graphical interface for teaching purposes
Biolek, Martin ; Komosný, Dan (referee) ; Jeřábek, Jan (advisor)
The goal of the Master thesis on the topic of the Client application of DNS protocol with graphical interface for teaching purposes is to create a program with the features of sending, receiving DNS, MDNS and LLMNR protocols with optional parameters. Additionally, compare the created application with available tools such as Nslookup, Dig and create examples of application for teaching.
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.
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.
Laboratory machine-set with induction and DC machine
Hudák, Ondřej ; Feiler, Zdeněk (referee) ; Červinka, Dalibor (advisor)
The work addresses the design and implementation of a universal laboratory workstation designed to teach a course on electrical drives. Workplace will be formed sets consisting of DC motor with permanent magnet on a 400W power supply voltage of 24V and induction motor with 180W power on 3x24V. The engines are connected through a flexible shaft coupling. The asynchronous motor is located on the extended shaft resolver for scanning speed and rotor position. Both engines will be supplied from the transistor inverters. The workplace will be designed for maximum clearness and resistance to damage by improper handling.
Adjustment and debugging of resolver including practical measurement
Bárta, Tomáš ; Kurfűrst,, Jiří (referee) ; Ondrůšek, Čestmír (advisor)
The goal of this thesis is create measuring station of resolver with using Analog Devices AD2S1210. The measuring station is based on the Atmel ATmega16 microprocesor and programmed in the C language. The measuring plant of resolvers to detection fault per one revolution is developed with industrial cooperation. The measuring station is made for a mobile use with onboard Pb accu. Measuring station will be used as a service device or in the manufacturing for setting the right angle of resolver on the engine. For the faults debugging of resolvers cables and other faults with the signal chain between the resolver and AD2S1210 is possible to show the SIN and COS signals on the external scope.
Influence of external electromagnetic fields to function of speed sensors
Jehlář, Zbyněk ; Nesvadba, Martin (referee) ; Singule, Vladislav (advisor)
This thesis is focused influence of external electromagnetic fields to function of speed sensors. In this work is created summary of individual principles speed sensors and possible sources electromagnetic fields.

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