National Repository of Grey Literature
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Audio Effect for Guitar Combo Simulation
No full textThis thesis deals with digital signal processing, simulation of guitar amplifier, convolution and its usage in real-time processing. Practical outcome is a VST3 plugin - guitar amplifier simulator with three modes of distortion, tone stack and cabinet simulation using measured impulse responses of real speakers
ISOBUS protocol implementation
No full textThe bachelor work deals with the implementation/study of the ISO standards group under the summary number 11783. The implementation uses the Aglostack-plus-plus libraries. Part of the solution is the design of a control unit that supports the functionality of the client for the Virtual Terminal and provides data from peripheral sensors such as temperature. The theoretical part deals with the definition of selected ISO 11783 standards and other related ones or from which the mentioned standard was derived. In the practical part, the creation of the IOP source file representing the graphic interface for the display, which is usually located in the cabin of the operating machine, is described, and the initialization and service communication between the Virtual Terminal unit and the data sending unit
Design of truss structure for piping and cabling
No full textThe thesis deals with the design of a possible design of a rod structure as a pipeline bridge. It is divided into four parts. The first part presents a brief introduction to the problem being solved. The second part is a research part. A summary of the theory applied in solving this work is given. The following is the part of the elaboration, where there is an introduction to several possible designs along with their comparison and a description of the algorithm generally solving selected models using an analytical procedure. Furthermore, there is a part dealing with the strain gauge measurement of the model, along with the model of a critical joint using the finite element method. In conclusion, the achieved results are evaluated. The work exclusively considers only static loading by load and self-weight
Self-Driving of a Model Car with LiDAR Technology
No full textThe aim of this work is to demonstrate the capabilities of a simple self-driving vehicle using LiDAR technology for orientation in space. A Raspberry Pi computing platform is used to process the data, evaluate the situation and control the vehicle model. The control algorithms, implemented in Python, were designed specifically for the purpose of this work. The first algorithm allows driving along a bounded route (e.g. a tunnel) and avoiding obstacles that the vehicle may encounter along the way. The second algorithm locates an open passage in a wall and then guides the vehicle through it. The functionality was verified through repeated testing of the proposed scenarios for both algorithms. The success rate of the first algorithm was 72 %, with the most common problem being a late reaction to sharp turns, which led to unnecessary stopping of the vehicle. Tests of the second algorithm showed that LiDAR is not ideal for detecting and navigating in more open spaces without the use of more advanced methods such as artificial intelligence. However, despite significant limitations, a success rate of 58 % was achieved here
Cloud monitoring system for IT infrastructures
No full textThis thesis focuses on modifying a monitoring system that automatically evaluates e- mail notifications received from monitored devices. Administrator is informed about the evaluation result by message. The aim of the work is to add new features and then migrate the whole system to a cloud platform. To increase functional value and eliminate dependency on one e-mail server provider, support for IMAP protocol has been added
Testing GUI using Bitmap Patterns and Text Recognition in Python
No full textThis thesis focuses on testing graphical user interfaces using bitmap patterns and text recognition in Python. The aim of the thesis is to design and implement a modular and extensible solution for testing desktop applications, enabling the automated verification of visual elements and textual content. The solution also includes a user interface for easy configuration of testing parameters and monitoring of test results. The implemented solution is analyzed based on real-world use cases and evaluated in terms of its efficiency and potential for further extension
An easily scalable reconfigurable intelligent surface prototype
No full textThe aim of this thesis is to design, manufacture, and characterize an improved and scalable reconfigurable intelligent surface module based on previous work. The borderless geometry of the RIS modules enables side-by-side installation to construct up-scaled reconfigurable intelligent surfaces. Two RIS modules were manufactured and tested, and shown to be fully operational by measurements. At operation frequency 5 GHz, the reflection phase is tunable over a range of 326° with bias voltages ranging from 0 V to 9.5 V. The results are consistent across both RIS modules. An up-scaled RIS consisting of two modules was also constructed and measured, showing the same characteristics as a single module but with a much larger magnitude of steerable reflection. The functional and easy-to-use RIS modules may prove useful in answering many major questions in the field of reconfigurable intelligent surface research
Design of the Dual-Clutch Transmission of a Truck
No full textThis master thesis deals with design of double clutch transmission for trucks. Based on the research done, a concept of transmission is developed, including the design of gear ratios that fulfills the requirements of the assignment. The load cycle is then created from the provided data, which is required for the subsequent design of the transmission in Romax. Finally, the gears and bearings are optimized to meet the required gearbox lifetime
Self-healing coatings in engineering applications
No full textThis bachelor thesis focuses on self-healing coatings and their potential applications in mechanical engineering. Due to their ability to autonomously repair defects caused by operational wear of mechanical components, these coatings demonstrate significant potential for reducing maintenance costs, extending component lifespan, and minimizing environmental impact. The thesis presents a review study aimed at explaining the functional principles of these systems and analyzing specific examples from scientific literature. Based on the conducted analysis, various types of self-healing coatings are compared in terms of their healing efficiency, adhesion, corrosion resistance, and technological complexity. The findings indicate that although none of the described systems currently meet all the criteria for widespread industrial adoption, most exhibit promising characteristics for specific applications. The thesis also identifies the main obstacles to broader implementation of these materials and proposes directions for future research
The influence of selected parameters on the fluidity of Al alloy in the investment casting technology
No full textThis thesis focuses on evaluating the permeability of ceramic shells used in investment casting and its influence on the fluidity of thin-walled castings. Three types of shells were tested: standard, with sealcoat, and with added nylon fibers. The highest permeability was observed in the shell with fibers, while the lowest was in the sealcoated variant. Molds for casting thin-walled samples with wall thicknesses of 1 mm, 0.8 mm, and 0.5 mm were made from these shells. Due to cracking of the molds during the burnout and firing processes, the resulting wall thicknesses were partially affected. The results indicate that shells with fibers improve the fluidity of thin-walled castings by approximately 10 to 16 % compared to the standard shell. To obtain more accurate results, it is recommended to increase the number of measurements and optimize the mold design to prevent damage during production