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Design, optimization and full load circuit simulation of the surface mounted permanent magnet machine
Bláha, Martin ; Ondrůšek, Čestmír (referee) ; Kurfűrst, Jiří (advisor)
This thesis deals with the possibility of using the finite elements method for the analysing of synchronous permanent magnets machines. The aim of this work is to discuss the possibility of the machine design more effectively with using the finite elements method and Maxwell software for the simulations. On the created parametric model, simulations were performed according to master thesis assignment. The aim of this work is to determine induced voltage, iron losses, machine inductances and make a permanent magnets demagnetization analysis. From simulations results the machine efficiency is calculated. The parametric model was used for the optimization of selected parameters. From results of optimization new dimensions of permanent magnets was obtained. Machine efficiency was increased by new permanent magnet material and optimized design.
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Slab road bridge
Blaha, Martin ; Koláček, Jan (referee) ; Panáček, Josef (advisor)
Bachelor thesis deals with a design of a prestressed bridge structure that transfers the D35 motorway between village Velký Újezd and town Lipník nad Bečvou. The bridge is bridged by the local Kyjánka stream. Three studies were designed from which a variant of a rectangular prestressed monolithic slab was selected and elaboraterd. The static model and its internal forces were calculated in SCIA Engineer 18.1. The calculation is made according to valid standards.
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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.
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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.
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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
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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.
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Association of housing unit owners
BLÁHA, Martin
The bachelor thesis deals with analysis of the regulation of special legal entity - The associations of housing unit owners. It is an independent private law institute which is legally regulated in Act No. 89/2012 Coll., The Civil Code. There are described basic principles how associations works. One of the main aims of this paper is to compare between old and new law regulation of this institute. It is been mistakenly confused for a co-operative housing by general public. For this reason there is a chapter focused on co-operative housing to clear the differences between these two institutes. In addition there are described basic concepts and brief historical law development of the association of housing unit owners. It also includes questionnaire survey and guided interview. The questionnaire survey has been done with fifteen association members in total fifteen associations. The aim was find out the way members look at association, their view of statutory body and find out how well they know their internal regulations. Same number of surveys has been done with statutory body. Lastly, three guided interviews with assosiation members has been done for more detailed approach of association of housing unit owners and how it works.
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Level of first aid knowledge of ice hockey coaches
Bláha, Martin ; Majorová, Simona (advisor) ; Prokešová, Eva (referee)
Title: Level of first aid knowledge of ice hockey coaches Objectives: The main objective of this bachelor thesis was to determine the level of knowledge of ice hockey coaches regardless of the level of coaching license. The partial objectives are whether time since passing the coaching license affects the level of first aid knowledge of ice hockey coaches and whether first aid knowledge is higher in ice hockey coaches with higher coaching license. Methods: In my work, the method of anonymous survey was used. The questionnaire consisted of two parts, where the first part contained 9 general questions about coaching activities, from which i then evaluated the results and answered the research questions. The second part of the survey contained 18 questions on first aid knowledge. Results: Based on the survey, it was found that ice hockey coaches do not have sufficient knowledge in first aid. The results showed that the average success rate of the respondents (38) was only 58.3%. It was also found that time since licensure has a negative effect on the first aid knowledge of ice hockey coaches. Coaches who completed their coaching license studies recently (0-2 years) demonstrated better knowledge in this subject than coaches who completed their studies two or more years ago. Coaches who hold a B...
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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.
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