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Control Systems of Gears Changing on Load in Tractors Gearboxes
Holub, Přemysl ; Svída, David (referee) ; Dundálek, Radim (advisor)
This bachelor thesis is interested in the overview of tractor’s gearboxes, which are changing on load. There are reasons, why it has to be costructed and there are requirements for it. There are also described PowerShifts, which allow us gear changing on load. After basic description of concrete gearbox, there is always some example of using in current tractors. In period named Mechanical gearboxes, wchich are changing partly on load there is more space for Zetor tractors and its gearboxes. In one of the last period there is important part about continuously variable transmissions where the driving speed is regulated steplessly. These gearboxes are considered to be modern technology of transfer engine torque.
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Research and development grout and anchor masses
Žlebek, Tomáš ; Petránek, Vít (referee) ; Drochytka, Rostislav (advisor)
Modern anchor and grout systems are now at a high level and they are used in many branches of industry. This thesis evaluates the current state of anchoring and grouting systems, research of currently used material basis, testing procedures and up to date legislation for these types of materials. Above all, the thesis is focused on the chemical types of anchor and grout materials for utilization in industrial production facilities with exposure to extreme loads, a new methodology for testing of these types of materials and input raw materials will be proposed. The final part of this thesis is a proposal of new optimum formulas for anchoring and grouting materials for utilization in industrial production facilities with exposure to extreme loads including the description of their applications.
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The database of waste incinerators in Europe
Šaldová, Lenka ; Ručka,, Jan (referee) ; Hluštík, Petr (advisor)
The aim of this thesis is to describe modern technological processing lines MSW incinerators. Describe individual objects and their links with the principle of thermal combustion. Processes described in the process line will be: waste reception, storage and waste materials, waste pretreatment, loading of waste into the process, thermal treatment of waste, energy utilization and conversion, gas cleaning, disposal of residues from flue gas cleaning, gas discharge, monitoring and control emissions , cleaning and inspection of wastewater treatment and disposal of ash (kiln ash), discharge (disposal) of solid residues. In the second part of this database will be set up incinerators occurring in Europe with basic information (address, website, kiln type, number of lines, the amount of waste incinerated, etc.). The developed database will be created graphs for better clarity and comparison. The database will be accompanied by the emission requirements of individual countries according to the applicable domestic and European legislation.
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Design and verification file of compensation exercise in floorball in the junior category
MĚŘIČKA, Michal
Floorball is a modern sport in which speed and dynamics is applied, but there is a muscle imbalance caused due to one-sided loading as well. The aim of the bachelor´s thesis is to suggest and check compensatory exercises in floorball club FBC Štíři České Budějovice. These exercises are focused on the category of 15 and 16-year-old boys who were put to the test of somatic measurement, motor coordination and functional muscle testing. According to the results of the entrance testing we suggest compensory exercises which are to be implemented into the training unit three times a week during four months. Afterwards we evaluate the function of the compensatory exercises by the final test which is identical to the entrance one. The results show us that the compensatory exercises assist in reducing muscle imbalance caused by playing floorball.
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Demands on radiology assistants at three-dimension visualization
ČECH, Svatopluk
Fast development of three-dimension visualization in radiology relates to more sophisticated diagnostic machines, with the development of computer technology and digitizing. Increasing demands on radiology assistants in operating programs of reconstruction images increase the importance of their position at modern radiology workplace. Three-dimension images offer exact and undistorted images of patient's anatomy, they give better diagnostic information for physicians - radiologists and more objective imagination for physicians - clinicians. They find the application in a number of examinations in skiagraphy, angiography, computer tomography, magnetic resonance and ultrasonography. We can say that three-dimension visualization substitutes other examination which are invasive and represent certain complications for a patient. The question is whether some three-dimension examination can reduce radiation load of a patient. We can suppose that digital imaging methods will be part of near future and three-dimension visualization and further development of computer technique will acquire still more impact in diagnostic of many diseases.
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Modern methods of monitoring the degradation of insulation systeme of power plant large rotating machines
DVOŘÁK, Martin
Prediction diversification disturbances timely diagnosed booming disturbances insulative system big synchronous generator, working like significant source electricity supply system in zone base load boiler. Lessen risk machine fault is based on completion on - line system, following insulative system generator. On the grounds of dates obtained from on-line monitoring will possible to diagnose rising bug on all beginning their development yet before it, than in character grow turn-to-turn fault stator winding or cut off in magnetic circuit machinery. To following state insulative system machinery in those work I prefer using two independent on - line diagnostic methods, following state insulative system in the working condition machinery. Further in those work set up outlines technical solving for personal modernizing arrangement.
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Control of Parallel Active Filter by Using dSpace 1103A
Paclt, Zdeněk ; Šimek, Petr ; Valouch, Viktor
This work shows that nonlinear control technique of a shunt active filter is well suited to compensate for characteristic current harmonics that are generated by nonlinear loads. The proposed control is based on two inner current loops and an outer dc bus voltage regulator loop. There is no interaction between inner and outer loops in addition to good performance in both steady-state and transient operation. Active filters represent a modern and effective resource for suppresing interfering phenomena in the electrical supply.
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Railway (flexible space)
Smržová, Kristýna ; Štěpán, Marek (referee) ; Mléčka, Jan (advisor)
Finding new use for the existing railway tracks, which prove themselves as one of the best ways to carry heavy or sizable load. Therefore they have an ability to carry a space. Verification of merging railway with everyday life. Design of a modular units and modifiable structures. Utilization of modern technologies. Demonstration of a proposal of a design using typical examples of railway structure and its surroundings. Taking advantage of railway tracks, unused train stations, neighboring unused industry grounds etc. Description: New possibilities of using railway tracks and surrounded unused sites. Design of modular structures adapted according to selected areas. Utilization of modern technologies.
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The usability of dynamic web technologies for demanding real-time applications
Privalenkov, Danila ; Galamboš, Leo (referee) ; Kopecký, Michal (advisor)
Emergence of modern web technologies enables creation of fully featured applications to which we are used in the environment of commonly available operation systems. Web applications however work in a browser and therefore are platform independent. The thesis studies technologies for creation of dynamic web content and their usability for applications that require frequent and massive communication between user interface and application layers. In the thesis we have focused on trading platforms. We analyzed and implemented minimal requirements imposed on trading platforms as well as performed load tests of implemented solutions.
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Railway bridge with steel load-carrying structure
Šarmanová, Iveta ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The subject of master’s thesis is a structural analysis of a bearing structure of an existing historical single-track railway bridge over the Vltava river in a direction from Prague Modřany to Vrané nad Vltavou. The riveted steel bridge carries rail traffic across five fields. A part of the master’s thesis is focused on a disposal of a variant of the longest field by using a modern arch construction.
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