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Testing of Distance Protection
Řehoř, Jiří ; Topolánek, David (referee) ; Orságová, Jaroslava (advisor)
The testing of distance protection in bachelor´s task is made a distinction between protection, requirements and relegation. This testing is also consisted in principle of function, describing terms of distance protection and comparing with time-current characteristics. The next step after short estimation was describing digital distance protection SIPROTEC 7SA511. The advantages are included in this estimation. The next part contains some configurations and connections with a test equipment in order to take control of measuring through the computer. The extended configurations are also comprised of two programms – DIGSY and TZO3. We had to make a suggestion of suitable methodics for measuring a time-current characteristic. We carried out three measurements where the test equipment was set to role of type TREND. A magnitude is generated at the output that is changed linearly in time with required rate (speed). We changed a current IX1 for our measurements that was undertaken with a rate of current rise. This process was given by a test equipment when the set values were constant. In the second measurement we modified a size of shift phase in the test equipment. In the third measurement we tried to set up different sizes of particular impedance characteristics (zone) inside of the distance protection where was set a neutral breaking time for the measured zone. On the contrary, the previous measurements had an absolute time.We have introduced evaluated results of measuring and observations in the end of this bachelor’s thesis.
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Test Equipment for Solder Joint Strength Measuring
Čechák, Ondřej ; Špinka, Jiří (referee) ; Starý, Jiří (advisor)
This master thesis introduces the problematics of the tensile strength of soldered joints and the correlative mathematical formulas and the use of mentioned problematics in the technology of die shear/pull machines designed for the solder joint tensile strength measurement. It explains the importance and reasons for the use of this technology. The emphasis is then laid on the design and construction innovations of the current laboratory manual shear/pull measuring machine, its semi-automation and the possibility of utilizing the innovated system in a laboratory class of a subject on FEEC BUT.
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Design of equipment for measuring aerodynamically relevant parameters of passenger car tire
Kojecký, René ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This diploma thesis deals with the issue of measuring tire parameters and their impact on vehicle aerodynamics. The aim is to create a design of the tire test equipment together with a suitable method for evaluating obtained results. The theoretical part provides an overview of currently used tire testing methods. The market research follows in order to select suitable components for the proposed measuring station. The output of the practical part of the work is the assembly of the solver in the form of a Matlab script and a design with the necessary drawing documentation.
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Compact equipment for mechanical durability testing air circuit breakers
Dušek, Pavel ; Šedivá, Soňa (referee) ; Štohl, Radek (advisor)
This master's thesis is focused on the description of mechanical durability testing of low voltage circuit breakers, description of circuit breakers Sentron 3WL and 3WA and the design of own solution for mechanical durability tests of Sentron 3WL and 3WA air circuit breakers. The solution itself consists of selecting components, designing the electrical schema, creating block diagrams of the program structure, creating the necessary software and verifying the functionality of the equipment.
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Simulator for check of seat belts function
Neuwirth, Zdeněk ; Prášil, Ludvík (referee) ; Mazůrek, Ivan (advisor)
Thesis is oriented on project construction universal apparatus for introduction and research effects deceleration and impact with possibility setting initial velocity. Basic application proposed test station is crash simulation for diagnostic safety belts. At first there're in work presented physical value that describe action in progress at impact, further safety belts, their testing and test . Considerable volume of work is devoted to project actuation, system obstruction kinetic energy and basic construction. Subsequently is presented proposed construction and performed strenght calculation. In the end there are summarized basic characteristics proposed construction, short financial opinion, process of installation and safety rules for using this equipment.
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Adaptation of shock absorbers testing device on contact fatigue testing of dynamically loaded surfaces
Nepovím, Lukáš ; Čípek, Pavel (referee) ; Dvořáček, Jiří (advisor)
This bachelor’s thesis deals with the design of an adapter for the modification of a test device, where the automatic tensioners (dampers) of automotive belts are tested. The proposed adapter allows to test the functionality of the valve tappet assembly. The design of a simple test methodology is also a part of the solution. The first part of the thesis deals with the overview of the given issue. Subsequently, the design variants of the adapter and the loading methodology of the tested component are proposed. The main part describes the design of the adapter, the method of lubrication of the tested component, the measuring equipment used in the experimental test and the design of the test methodology. The complete drawing documentation of the adapter is the output of this work.
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Design of equipment for measuring aerodynamically relevant parameters of passenger car tire
Kojecký, René ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This diploma thesis deals with the issue of measuring tire parameters and their impact on vehicle aerodynamics. The aim is to create a design of the tire test equipment together with a suitable method for evaluating obtained results. The theoretical part provides an overview of currently used tire testing methods. The market research follows in order to select suitable components for the proposed measuring station. The output of the practical part of the work is the assembly of the solver in the form of a Matlab script and a design with the necessary drawing documentation.
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Compact equipment for mechanical durability testing air circuit breakers
Dušek, Pavel ; Šedivá, Soňa (referee) ; Štohl, Radek (advisor)
This master's thesis is focused on the description of mechanical durability testing of low voltage circuit breakers, description of circuit breakers Sentron 3WL and 3WA and the design of own solution for mechanical durability tests of Sentron 3WL and 3WA air circuit breakers. The solution itself consists of selecting components, designing the electrical schema, creating block diagrams of the program structure, creating the necessary software and verifying the functionality of the equipment.
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Test Equipment for Solder Joint Strength Measuring
Čechák, Ondřej ; Špinka, Jiří (referee) ; Starý, Jiří (advisor)
This master thesis introduces the problematics of the tensile strength of soldered joints and the correlative mathematical formulas and the use of mentioned problematics in the technology of die shear/pull machines designed for the solder joint tensile strength measurement. It explains the importance and reasons for the use of this technology. The emphasis is then laid on the design and construction innovations of the current laboratory manual shear/pull measuring machine, its semi-automation and the possibility of utilizing the innovated system in a laboratory class of a subject on FEEC BUT.
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Adaptation of shock absorbers testing device on contact fatigue testing of dynamically loaded surfaces
Nepovím, Lukáš ; Čípek, Pavel (referee) ; Dvořáček, Jiří (advisor)
This bachelor’s thesis deals with the design of an adapter for the modification of a test device, where the automatic tensioners (dampers) of automotive belts are tested. The proposed adapter allows to test the functionality of the valve tappet assembly. The design of a simple test methodology is also a part of the solution. The first part of the thesis deals with the overview of the given issue. Subsequently, the design variants of the adapter and the loading methodology of the tested component are proposed. The main part describes the design of the adapter, the method of lubrication of the tested component, the measuring equipment used in the experimental test and the design of the test methodology. The complete drawing documentation of the adapter is the output of this work.
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