Explore CTU's Digital Library

Access research publications, theses and academic works

Faculty of Civil Engineering Faculty of Mechanical Engineering Faculty of Electrical Engineering Faculty of Nuclear Sciences and Physical Engineering Faculty of Architecture Faculty of Transportation Sciences Faculty of Biomedical Engineering Faculty of Information Technology Klokner Institute Masaryk Institute of Advanced Studies Central Library Acta Polytechnica Acta Polytechnica CTU Proceedings CTU Publishing Activity

Recent Submissions

Design and Implementation of a Control Adapter for AC/DC Power Supplies at the OK1KUR Radio Club
Návrh a realizace řídicího adaptéru pro AC/DC napájecí zdroje v radioklubu OK1KUR
(Czech Technical University in Prague, 2026-05-22) Hrbáček, Jan; Spáčil, Jan; Polívka, Jakub
This bachelor's thesis deals with the design and implementation of an adapter for controlling AC/DC power supplies. The aim is to develop a system capable of receiving commands via the Ethernet bus, processing them, and subsequently controlling individual input/output elements of the system, such as power relays and sensors measuring voltage and current. The thesis includes a comprehensive design of the measurement and control system. Software implementation and integration into Home Assistant are realized using the MQTT protocol. Processing of requests over the Ethernet bus is handled by the ESP32 microcontroller connected to a development shield manufactured by Olimex. All additional internal communication is implemented using the SPI bus.
Analysis of thin-walled aircraft structural element from the point of view of local buckling
Analýza prvku tenkostěnné letadlové konstrukce z pohledu lokální ztráty stability
(Czech Technical University in Prague, 2026-09-11) Vondráček, Michal; Dvořák, Milan; Kratochvíl, Aleš
This diploma thesis deals with the analysis of local buckling and ultimate load-bearing capacity of axially compressed thin-walled C-sections, which represent a simplified idealization of longitudinal stiffeners used in metallic aircraft structures. The aim of the thesis is to compare selected analytical, semi-empirical and design-code methods with reference numerical finite element models. For the determination of critical stress, the plate separation method, tabular and graphical procedures, the method according to BS 5950, the Critical Plate Method and the Finite Strip Method are assessed. For the determination of ultimate load-bearing capacity after initial buckling, Needhams method, Gerards method, the procedure according to Eurocode 9, the Direct Strength Method and the Continuous Strength Method are evaluated. The practical part of the thesis is carried out as a parametric study of C-sections made of aluminium alloy 2024-T3, with constant web height, length and thickness, and variable flange width. The reference critical stresses are determined using linear bifurcation analysis, while the ultimate stresses are obtained by geometrically and materially nonlinear analysis with initial imperfections in Abaqus. The results show that the accuracy of the individual methods strongly depends on their ability to capture the interaction between the walls of the cross-section and on compliance with their range of validity. At the same time, reaching the critical stress for local buckling cannot be considered the ultimate load-bearing capacity of the section, since most of the analysed geometries exhibit a significant post-buckling reserve after initial buckling.
Design and Prototyping of a Multifunctional Composite Module for an Experimental Aircraft
(Czech Technical University in Prague, 2026-09-11) Konečný, Kryštof; Teichman, Jiří; Dvořák, Milan; Barák, Karel
This diploma thesis deals with the design, verification, and manufacturing of a prototype multifunctional composite module for an experimental aircraft. The module was designed as a removable two-shell cover intended to house external equipment on the upper part of the fuselage. The work included a structural assessment of the design and an aerodynamic evaluation using a comparative CFD analysis of the aircraft with and without the module. The proposed prototype was subsequently manufactured, installed on the aircraft, and verified during flight testing. The design and manufacturing of the module were successfully completed.
The Effect of Sensory Stimulation of the Foot on Stability and Measurement Parameters in Dancers
Vliv senzorické stimulace plosky nohy na stabilitu a parametry měření u tanečníků
(Czech Technical University in Prague, 2026-08-12) Hrochová, Eliška; Svobodová, Martina; Salvét, Patrik
This bachelor thesis deals with the effect of targeted activation of the plantar foot muscles on stability and selected gait parameters in dancers. The aim of the thesis was to determine whether regular strengthening and re-education of plantar foot function can contribute to improved dynamic stability, selected gait parameters, and support of the foot arch. The theoretical part focuses on the anatomy and kinesiology of the foot and emphasizes its importance for maintaining stability and proper movement patterns, which are essential for dance. The practical part of the thesis was designed as an intervention study. The group of participants from a dance group was divided into two groups an intervention group and a control group. The intervention group completed a time-limited exercise program focused on re-education and strengthening of the plantar foot muscles. Both groups underwent initial and final kinesiology assessments using standardized tests and instrumental measurement with sensor insoles. Based on the obtained results, it can be stated that the intervention tended to have a positive effect mainly on dynamic stability and some gait parameters. In the intervention group, a trend toward improvement was observed in most monitored indicators. However, the changes were not significant in all cases, which may have been related to the shorter duration of the intervention, the high initial level of stability of the participants, and the specific characteristics of the dance population. The results of the thesis suggest that sensorimotor stimulation of the plantar surface of the foot may be a suitable addition to physiotherapy and training programs for dancers, particularly in terms of supporting stability and improving movement patterns.
Design and Implementation of a Racing Road Motorcycle Speed Measurement System
Návrh a realizace systému měření rychlosti závodního silničního motocyklu
(Czech Technical University in Prague, 2026-08-04) Vránek, Matěj; Toman, Přemysl; Dáňa, Roman
The aim of the theoretical part of the bachelors thesis entitled Design and Implementation of a Speed Measurement System for a Racing Road Motorcycle is to provide an overview of telemetry systems used in racing motorcycles, as well as an analysis of speedometer principles and sensor-based methods for measuring motorcycle speed. The practical part focuses on the design and development of a prototype speed measurement system, the definition of a methodology for its validation, the execution of experimental measurements, and the subsequent discussion of the obtained results.