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Design of a slope generator for LIN bus transceiver with controlled slopes
Šlechta, Adam ; Háze, Jiří (referee) ; Kledrowetz, Vilém (advisor)
This thesis deals with the introduction of the basic types of communication protocols in the automotive industry. It then looks in detail at the LIN communication protocol, which is characterized by its high EMC requirements. The thesis thus contains a description of the principles of electromagnetic radiation. Then the thesis describes the design of LIN driver in the old I4Te technology and proposes its modification for the new technology. Furthermore, the thesis deals with the design of several blocks of the LIN driver. Namely, a DA converter and an input follower.
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Load simulator according to ISO 11452 and CISPR25 for a headlamp for EMC testing
Drápal, Ladislav ; Růžek, Václav (referee) ; Kubíček, Michal (advisor)
The diploma thesis with the design of a Load simulator, which will be used during measurements in the EMC chamber. The Load simulator contains a total of five output levels. The diploma thesis solves outputs for directional lights and output for position light. The Load simulator consists of an analog solution of the PWM generator. By assembling a pulse width modulation generator on a solderless field, the basic functionality of the circuit was verified. The measured parameters were compared with the simulated ones. The basic scheme of the PWM generator was expanded with additional components, and an optical control output was created outside the PWM generator. By placing the printed circuit board in an aluminium box, two separate boards were created: one for the power supply and other for the control and performance part. which was not realized yet. The functionality of the circuit was verified by measuring on the PCB, and the waveforms were compared with the implementation on the solderless field. The constructed Load simulator was placed in the EMC chamber, where its resilience was tested through various EMC tests. Finally, the individual results were evaluated, and potential improvements were described.
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Analysis of the financial statements in a selected company
KALÁTOVÁ, Natálie
The bachelor thesis deals with the analysis of financial statements. It focuses on their characteristics and fulfilment of the regulations according to the legislation. The goal of this work was to evaluate the financial situation of the company with help of financial analysis tools. After that, suggestions for optimizing the economic situation were recommended based on the results achieved. The first part of this thesis generally summarizes the types of accounting companies, types of statements and their content. The second part deals with a specific analysis of the financial statements and evaluation of the results. Analyses are performed using absolute and relative indicators, bankruptcy and credit models, Du Pont decomposition and statistics. The selected relative indicators are then further compared with the values of their competitors. The results of this work can be used by the company as suggestions for improving their financial situation.
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Study of implementation of SPC statistical method for control of technological operations
Ondruška, Jan ; Zeman, Karel (referee) ; Jurová, Marie (advisor)
The master’s thesis contains a procedure of implementation of statistical process control for a machining process in a chosen company. The method is based upon knowledge of this topic which are mentioned in the first part of the thesis. The output is a comparison of general process performance before and after implementation of the above-mentioned statistical method and evaluation of the influence of this new method at the process. The comparison is done using hypothesis testing of specific statistical variables and analysis of process performance and capability of both data sets. The acquired knowledge and experience will be used for implementation of statistical process control for other processes in the company’s production portfolio.
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Mechanical properties of fiber reinforced composites for automotive applications
Bayer, Adam ; Žídek, Jan (referee) ; Jančář, Josef (advisor)
Bachelor’s thesis deals with studying mechanical features of fiber composites. As a matrix was chosen PMMA and as reinforcement was chosen glass fabric. Theoretical part sums up contemporary issues of polymer composites in automotive industry such as their production techniques and methods of impregnation. In experimental part were prepared samples by block polymerization of 30 % solution PMMA in monomer with initiator by 65° Celsius warmth oath, when was fabric directly unfolded in pre-polymer solution. On these samples were executed tensile tests by testing device Zwick and these samples were compared with results of theoreticaly calculated values.
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Comparison of steels and technologies in car bodywork production
Wojcik, Rudolf ; Šlais, Miroslav (referee) ; Dohnal, Ivo (advisor)
The project developed in the bachelor study describes the types of steel and technologies of car bodywork. The introductory chapter contains a brief description of the various parts of the body. The distribution, characteristics and uses of steel follow. The summary contains a set of technologies, including hydroforming method, hydro-mechanical forming technology, hot forming technology and tailor-welded blanks.
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Measurement of mechanical quantities with the support of CCD cameras
Marek, Petr ; Richter, Miloslav (referee) ; Havlíková, Marie (advisor)
This master’s work deals with types of digital cameras used in industry. Furthermore, there are mentioned application areas of cameras in the automotive industry. There was created searches industrial cameras on the market. In the next part is described hardware interconnection of Basler acA 1300-60gc camera and measuring platform cDAQ 9178. Part of this work is to create a system for synchronization of camera and measured data. In the last part is developed program for image processing and determine the angle of rotation of the steering wheel.
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Concept design of a Long-Range Car
Baka, Michal ; Siebert, Petr (referee) ; Křenek, Ladislav (advisor)
The topic of this diploma thesis is concept design long-range car of future, using electric drive. The main goal is to solve analyzed problems, which are reflected in the conceptual design of the vehicle that meets the ergonomic, technical and visual aspects, all focused in car interior.
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