|
|
The electronic commutation motor
Bláha, Martin ; Huzlík, Rostislav (referee) ; Melichar, Petr (advisor)
This work discusses about nowadays problematic of the electronic comutation motors.This work also describes the opportunity of electronic control of these motors. The result of this work is realization of electronic control circuit from discreet components. There also are mentioned is proposal of electronic control board from SMD components. This control board include temperature control with ventilator switching , commutation logic, PWM speed control. In the last part of this paper are results of evaluation measurements of EC motor.
|
|
|
Prestressed highway bridge
Blaha, Martin ; Diviš, Dalibor (referee) ; Panáček, Josef (advisor)
The diploma thesis deals with the design of a continuous prestressed bridge structure transferring the D56 motorway on the Frýdek-Místek bypass. The bridge bridges the local watercourse of the river Olešná, Příborská street and road II / 473. Three studies were proposed, from which a variant of a two-beam continuous prestressed monolithic slab was selected and elaborated. The static model and calculation of its internal forces took place in the program SCIA Engineer 20.0. The calculation is performed according to valid standards, limit states, which also includes the effects of construction. The work also contains detailed drawing documentation.
|
|
|
Magnetic field calculating of transformer by using conducting model
Bláha, Martin ; Skalka, Miroslav (referee) ; Kurfűrst, Jiří (advisor)
The paper deals with conductivE-resistive network. Use of this network is modeled transformer. The model is implemented in simulation program PSPICE and Simscape. To evaluace the results were used the values obtained using the finite element method. A simple model of the transformer has been replaced by rezistor network conductivity, which is divided into elements. According to these elements is a simplified model designed and analyzed
|
|
|
Optimization of manufacturing of iron castings to reduce the quantity of defects
Blaha, Marek ; Brázda, Zdeněk (referee) ; Juliš, Martin (advisor)
The presented diploma thesis is focused on defects of castings as well as optimization of production with the aim of reducing the number of defective products. The theoretical part is focused on basic information about cast iron and its production, structure and mechanical properties. Another part of this thesis describes the defects of castings and options for non-destructive testing of cast iron castings. In the experimental part are analyzed three sorts of defective casting. Castings for testing were provided by JMA s.r.o. foundry. The summary contains tests results and proposals for optimization of production.
|
|
|
Design of Tram
Blaha, Tomáš ; Surman, Martin (referee) ; Zvonek, Miroslav (advisor)
The thesis is about design of autonomous tram, which is part of integrated system of adaptive control of city traffic. The thesis includes research of history and current production of tram view of design, technologic solution and prospects. The next part contains design solution, which includes layout of interior, color and graphic solution with regard to technical solution and ergonomics requirements.
|
|
|
Students' successfulness and strategies when working with a map and factors affecting them
Havelková, Lenka ; Hanus, Martin (advisor) ; Knecht, Petr (referee) ; Bláha, Jan Daniel (referee)
Nowadays, information is increasingly presented in the form of various graphic materials. One of the key means of information visualisation is a map. Maps are complex representations and it is necessary to comprehend several cartographic concepts and to acquire skills and strategies for their efficient use. For this reason, it is important to give maps sufficient attention in the course of education. For the education to be of high quality, it is fundamental to understand the process of the map use and factors affecting this process and its successfulness. Therefore, the general purpose of the dissertation thesis is to develop this understanding. Specifically, the thesis has four main aims. One of them is to identify a map skill level of Czech students while using thematic maps since the popularity of thematic maps is increasing together with the number of cartographic insufficiencies they contain. These insufficiencies can inter alia cause a formation of misconceptions both about the maps and phenomena and regions they display. The second main aim is to identify and describe strategies that students choose to solve tasks which require the use of a thematic map. Additionally, the sub-aim is to understand the influence of chosen factors on the level of map skills as well as on choice and efficiency...
|
|
|
The Potential of Geocaching as a Tool for Exploring Regions and Landscapes.
BLÁHA, Martin
Geocaching is an outdoor activity where participants use GPS technology to find hidden caches. These caches are located using coordinates provided online, and players then embark on a real-world search to locate them. The aim of this diploma thesis is to closely examine the impact of geocaching on landscape exploration within a region. It aims to explani fundamental terms used in geocaching, core gameplay principles, and related concepts for readers. The research section builds on these concepts to addressing predefined research questions and seeks to provide insight into broader context. As part of the recommendations, summary overviews of selected caches are presented. Subjectively selected caches are evaluated based on predefined criteria, and their profiles are provided.
|
|
|
Choughs and irises. Anthropology of tourism, space and identity in Morocco
Konopíková, Michaela ; Soukup, Martin (advisor) ; Bláha, Jan Daniel (referee) ; Sokolíčková, Zdenka (referee)
The dissertation project is based on a long-term fieldwork among the Berber community in the Moroccan High Atlas Mountains. It looks at the transformation of the local environment since new discursive practices are emerging as a result of an interference of the global economy, environmentalism and developmental policies. Following Appadurai, the thesis raises a question of locality in contemporary world and neighborhoods, which are imagined, produced, and maintained against some sort of ground while the context-generative dimension of neighborhoods provides a theoretical angle on the relationship of global and local realities with the idea of culturally hybridized world. Together with Appadurai, the thesis deals with "what locality might mean in a situation where the nation-state faces particular sorts of transnational destabilization." The thesis has thus two main aims. (1) After describing the structural conditions in which the tourism industry in the mountains operates, (2) it will discuss the limitations of the locals' responses to the global market, or more broadly the impacts of globalization. It is necessary to establish a framework, which would connect the large- scale and small-scale processes and identify the concept of their dialectical relationships. Through such a reading, the thesis...
|
|
|
Hybrid Method for Modelling and State Estimation of Dynamic Systems
Brablc, Martin ; Blaha, Petr (referee) ; Bugeja, Marvin (referee) ; Grepl, Robert (advisor)
Tato Disertační práce se zabývá vývojem nové hybridní metody pro současné odha- dování stavů a parametrů nelineárních dynamických systémů, založené na myšlence lokálních lineárních modelů, která využívá odhad nejistoty parametrů modelu pro automatické nastavení některých parametrů Kalmanova filtru (KF), čímž se výrazně zjednodušuje její nasazení a nastavení v praktických aplikacích. V první části se disertační práce věnuje shrnutí aktuálního stavu poznání v oblasti dynamických systémů, simultánní estimace, KF a modelování nelineárních dynamických systémů. Následně se ve dvou samostatných kapitolách věnuje modifikaci KF pro situace, kde dominantním vlivem způsobujícím procesní šum jsou nepřesné parametry modelu, a dále modifikaci metody Receptive field weighted regression (RFWR) tak, aby mohla být použita pro duální estimaci. Nakonec práce popisuje vyvinutou hybridní metodu složenou z modifikovaných algoritmů RFWR a KF nazvanou Receptive field dual estimation - (RFDE) a demonstruje její funkčnost na simulačních i reálných datech.
|
|
| |
guest ::
RSS feed.