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Structure Optimization of Electro-Hydrostatic Actuator for General Aviation Aircraft
Kraus, Jan ; Němec, Zdeněk (referee) ; Rousek, Miroslav (referee) ; Třetina, Karel (advisor)
The use of only one primary sort of energy is the present trend of aircraft design and its force systens. There are designed electromagnetical force systems for control of ther moving parts of aircraft structure. Great demands are laid on energy and dynamic characteristics at some force systems, especially at aircraft control system, and therefore there are developed electro-hydrostatic actuators, suitable for aircraft for aircraft control system, which could graduallly replace commonly used hydraulic servo-controol system. Not only electric signals but also required electric outputs are led into these electro-hydraulic actuators. Using a hydrostatic converter it is changed into mechanical output controlling the aircraft control system. The goal of work is to set requirements for characteristic and conception of electro – hydrostatic actuators for aircraft control systems. Further, on the basis of theoretical analysis , computer modeling and experiment, the design optimisation of electro-ghydrostatic actuator should be done for small business aircraft from the point of view of dimmensions and dynamic characteristics.
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Valuation of damage caused by torrential rain to a house in the village of Nesovice
Kraus, Jan ; Vřešťál, Jiří (referee) ; Šmahel, Milan (advisor)
The thesis focuses on the valuation of damage caused by torrential rain to the family house in the village Nesovice. In the first part the basic terms and assessing methods are defined. In the second part, there are applied methods of appraisal of damage on the family house. There is the value of the property calculated before the insurance event. In the itemized budget, there are quantified the cost of repairs of damaged constructions and then detected current value after repairs. The aim of the thesis is to dedicate readers to the problem of assessment.
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Vizualizace procesu tavného svařování
Kraus, Jan
The presented work deals with a rating of the welding process from the view of welding possibility based on a nondestructive testing record by an acoustic emission passive method (AE). The measuring are carried out on guaranteed welding materials and difficult welding materials. The material (metal-graphic and frakt-graphic) and mechanic verification of a weld creation is placed after the welding process and the reaction of the metals with a different chemical composition. There is also the analysis of the AE records depending on the material states during a formation of a fusible and resistance joint.
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Aplikace metod strojového učení na dolování znalosti z dat
Kraus, Jan
The diploma thesis deals with the area of data mining applied to large collections of textual data. Specifically the thesis is focused on sentiment analysis based on the user's subjective verbal assessment in natural language. The first part of the diploma thesis introduces the reader to basic terms of machine learning and data mining applied particularly to large textual data collections. Following is the description of textual data preprocessing methods and principles of machine learning algorithms. In the practical part of this thesis there are experiments designed and subsequently executed using the SPSS Modeler tool. The experimental part is focused especially on identification of significant attributes and recongnition of relationships between them. The emphasis is put especially on thorough interpretation of the results obtained.
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