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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Návrh dynamických modelů pro řízení trakce experimentálního vozidla / Design of dynamic models for traction control of experimental vehicle

Jasanský, Michal January 2010 (has links)
The Master's thesis deals with the simulations kinematics and dynamics of experimental four-wheeled vehicle with all-wheel steering and all-wheel drive. Suggestion of vehicle stability systems ABS/ASR for traction control is included. There are several dynamics models with their comparison. The estimation of important vehicle parameters is implemented. Based on knowledge the simple vehicle stability system ABS/ASR is created.
52

Koncepční návrh sportovního dvousedadlového vozu / Conceptual design of two-seat high performance car

Straka, Martin January 2010 (has links)
is diploma thesis deals with design concept of two-seater sports car with the main focus on chassis torsional stiffness and axle kinematics. The main idea started with some paper sketches which were later transferred to the 3D model with all the main parts (engine, differential, driver etc.) using CATIA V5 design program. Then the torsional stiffness was counted using FEM software ANSYS 12.0. Finally the axis geometry during bump/rebump movement of the wheel was simulated in MBS system ADAMS 2007.
53

Návrh plošiny simulátoru / Design of platform simulator

Hlaváček, Pavel January 2012 (has links)
The diploma thesis deals with an analysis and the strength check of selected componenets of a parallel mechanism containing six degrees of freedom. The device uses crank mechanisms as chain guides. The strength calculation takes advantage of the finite element method. The paper also suggests a design of selected components contributing to a reduction of the maximum stress von misses (according to the HMH condition) causes by the load.
54

Kinematická analýza pohybu cyklisty s transtibiální protézou. / Kinematic analysis of movement of cyclist with transtibial prosthesis.

Stoklásek, Pavel January 2013 (has links)
This work is aiming to the area of biomechanics and deals with the experimental finding of appropriate kinematic ratios of crank mechanism on racing bicycle and transtibial prosthesis of racing cyclists with an assessment of kinematic ratios depending on the overall athletic performance. The primary aim of the work is investigation of the impact of inappropriate existing kinematic ratios of leg prosthesis and crank mechanism on the kinematics and dynamics of top athlete. The work presents experiments that proposes find out appropriate kinematic ratio of the length of kinematic members and possibility to improve overall athletic performance. The measurement is supplemented about cycling analysis of racer realized via cameras tracking system and measuring muscle activity by EMG. The work also includes a description of impact of various factors on cycling.
55

Modelování, identifikace a řízení robotického manipulátoru / Modelling, identification and control of robotic manipulator

Šuranský, Michal January 2013 (has links)
Main aim of this master’s thesis is to identify, model and control robotic manipulator with three degrees of freedom. The thesis is a part of major project [17], the aim of which is to create an educational platform. In the thesis the simple PID control and the PID with feedforward compensation control is tested on the model of simple pendulum. In the next part models of DC motors, which are used for construction of the manipulator, are developed and the inverse dynamics model of manipulator is developed. This model is used for feedforward control of the manipulator. In the final part the application was developed, which allows the manipulator to be taught some movements, which can be later on, executed. For the simple control of the application the graphical user interface was programmed.
56

Pokročilá navigace v heterogenních multirobotických systémech ve vnějším prostředí / Advanced Navigation in Heterogeneous Multi-robot Systems in Outdoor Environment

Jílek, Tomáš January 2015 (has links)
The doctoral thesis discusses current options for the navigation of unmanned ground vehicles with a focus on achieving high absolute compliance of the required motion trajectory and the obtained one. The current possibilities of key self-localization methods, such as global satellite navigation systems, inertial navigation systems, and odometry, are analyzed. The description of the navigation method, which allows achieving a centimeter-level accuracy of the required trajectory tracking with the above mentioned self-localization methods, forms the core of the thesis. The new navigation method was designed with regard to its very simple parameterization, respecting the limitations of the used robot drive configuration. Thus, after an appropriate parametrization of the navigation method, it can be applied to any drive configuration. The concept of the navigation method allows integrating and using more self-localization systems and external navigation methods simultaneously. This increases the overall robustness of the whole process of the mobile robot navigation. The thesis also deals with the solution of cooperative convoying heterogeneous mobile robots. The proposed algorithms were validated under real outdoor conditions in three different experiments.
57

Řízení robotické ruky pomocí PLC / Robotic arm control by PLC

Pleva, Damián January 2016 (has links)
The goals of this diploma thesis were to get acquainted with the model of the robotic arm Beta 6 from Merkur Company. Next design connections between control board and PLC from Rockwell Automation. Then design and realize Add-On instruction for movement in 3D space with appropriate visualization.
58

Animační knihovna se zaměřením na skeletální animace / Animation Library Focused on Skeletal Animations

Dokoupil, Petr January 2009 (has links)
This thesis proposes an architecture of animation engine flexible enough to support large scale of animation algorithms with unified approach to each one of them. One of the major goals of the engine is to support creation of very complex animation seqences with high degree of animation execution control. The main animation technique used in the engine is skeletal animation and some variants of this technique are already implemented within, but it was never meant to be skeletal animation only engine and is designed that way.
59

Myodynamika oporové fáze při odrazových pohybech člověka / Myodynamics of the support phase during different take-off tasks in human locomotion

Hojka, Vladimír January 2013 (has links)
Title: Myodynamics of the support phase during different take-off tasks in human locomotion Objectives: Six types of take-off movement were analyzed in terms of support limb kinematics, take-off dynamics and muscle activation, in order to identify differences in motor control. Methods: 14 male athletes (22.6 ± 4.4 years; 182.4 ± 5.3 cm; 74.7 ± 6.2 kg) took part in laboratory experiment. Each athlete performed six different take-off movements (running, acceleration - first and second step, long jump take-off, high jump take-off and take-off to the hurdle). System Qualisys was used to analyze kinematics of the support limb. Dynamic of the suport phase was measured with Kistler 9281 EA force- plate. ME6000 apparatus was used to measure the muscle activation. Results were processed and statistically evaluated in Matlab (MathWorks, Inc) environment. Pair ANOVA, T-test and Friedmann test were performed to identify differences between take-off movements. regression analysis was introduced to find the relationship between parameters. Results: Significant differences in take-off dynamics are realized with not so significant differences in kinematic and electromyographic parameters. high jump and long jump take-offs acted most specifically in comparison with other types of take-offs. Two typically...
60

Hnací mechanismus Stirlingova motoru / Crankshaft mechanism of Stirling engine

Valčík, Martin January 2018 (has links)
This diploma thesis is focused on the design of the driving mechanism of Stirling engine, where was chosen modification of these engines with rhombic drive. Subsequently is constructed kinematical, dynamical and thermomechanical mathematical model. Finally, is going from these models for execution strength control and drawing documentation.

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