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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.
41

Konstrukční návrh precizního manipulátoru / Conceptual design of a precision manipulator

Stuchlík, Petr January 2018 (has links)
This diploma thesis deals with the problems of analysis and the subsequent design of a precision manipulator used as a microscope table. The first part od the final thesis deals with the problems associated with the movement of the test sample within the electron microscope. Subsequently, possiblle design variants were proposed, further developing the next steps fot the correctness and functionality of manipulator. The individual force loads of the components were calculated. The result of the work was constructed as a CAD model with subsequent transfer to the assembly drawing.
42

Návrh sklopné vrtule pro bezpilotní prostředky / Design of folding propeller for UAVs

Dítě, Radovan January 2019 (has links)
This master's thesis deals with the design of foldable propeller for UAVs. The design of the foldalble propeller is created based on theory of propellers and also on tha detail ana-lyzis of existing foldalble propellers with similar dimensions. The propeller is then manufac-tured and tested. One of the part of this thesis also describes design of central hub. At the end the methodical procedure of creating foldable propellers is suggested.
43

NVH analýza pohonné jednotky / NVH Analysis of the Powertrain

Mrózek, Jan January 2021 (has links)
This master thesis is focused on the diagnostics of vibrations and noise of an internal combustion engine. The work also includes a summary of the current state of knowledge in which the quantities used, transmission paths, measuring devices and the possibilities of performing frequency analysis are analysed. As part of the technical experiment on which this work is based, vibrations and noise on the tractor engine are measured. The obtained data are then further processed using the BK Connect program. Subsequently, a frequency analysis is performed, specifically an order analysis. The conclusion of the analysis consists of an evaluation of individual orders that cause excitation that occur in the investigated motor.
44

Návrh ovládacího zařízení pro vibrografické měření / Design of the control device for vibrographic measurement

Weiss, Lukáš January 2015 (has links)
This diploma thesis deals with designing of the control device for vibrographic measurement. The device is primary used in cooperation with MERCURY Real Time Tracking System. The main task of the device is time-controlled triggering of camera system. In the first step, the summary of basic information about technical diagnostic and vibrodiagnostic is reported. The second part describes vibrodiagnostic measurements with MERCURY system. The third part describes a hardware design of the device and functional blocks and its parameters. Next part provides a simple algorithm of the device operation and a communication protocol. Last part contains measured data of the realized device and vibrographic measurement with laboratory sample.
45

Verifikace deformace strojního dílu / Verifikation of machine component strain

Novák, Tomáš January 2010 (has links)
The thesis deals with a comparative analysis of strain of parts using finite element method (FEM) and measurement of the optical system Pontos. Part was used the reflector of Volkswagen Polo. The subject of comparing were the values of deviations optical shield of reflector which excitation random vibration described power spectral density. The thesis presented describes of experimental measurements to obtain the boundary conditions using optical systems. FEM analysis was performed using software ANSYS Workbench 12.
46

Vibrace při obrábění kovů / Vibrations at machining of metals

Fiala, Zdeněk January 2010 (has links)
The diploma work deals with a mathematical description of vibration and its generation when machining. Moreover, some techniques of modal parameters measurement in the theoretical part are included. The practical part is designed and based on the measured natural frequencies of the machine with specific tool and materials. In conclusion, a lobe diagram stability for semiautomatic lathe SPN 12 CNC and selected machining operation is specified by means of apparatus.
47

Výpočtové modelování vibrací převodovky / Computational Modelling of Geartrain Vibration

Král, Jiří January 2014 (has links)
This diploma thesis deals with the model design for gearbox. The work is focused to its basic creation and optimization in programs of MBS ADAMS and ANSYS. It includes also short summary of contemporary solutions, which are used, and basic characterization of acoustic quantities.
48

Hluk a vibrace rootsových dmychadel / Noise and vibrations of roots blowers

Smrček, Martin January 2015 (has links)
This thesis is concerned with the spread of noise in the housing sets blowers, blower vibration, due to the shape of the geometry of the individual parts of the blower and the design of a suitable discharge muffler in order to achieve the highest possible attenuation. Analysis blower and silencer discharge was conducted using the finite element simulation ANSYS 15.0
49

Konstrukce experimentálního zařízení pro trvanlivostní zkoušky ložisek / Design of experimental device for durability testing of bearings

Frejlich, Tomáš January 2015 (has links)
Diploma thesis deals with the structural design and subsequent implementation of a functional prototype of an experimental device for durability testing of bearings. The first part of the thesis deals with an overview of the current state of knowledge and summarizes information about testing the durability of bearings. In the next part follows the design, selection and analysis of the optimal design variants. The last part deals with the verification of the functionality of the prototype bearing life testing and evaluation of data measured during testing.
50

Mechatronický přístup v dynamice vozidel / Mechatronic Approach to Vehicle Dynamics

Kučera, Pavel January 2015 (has links)
This theses deals with mechatronic approach to a vehicle dynamics. It is divided into two main parts. There are prepared vibration analysis, measurement and analysis of functions of truck powertrain in the first part. The second part describes the creation of computational models allowing to simulate driving conditions, vibrations of the vehicle and its extension for the development of mechatronic systems. There are shown different driving modes to control created algorithm of mechatronic system. The main tool for the development of mechatronic systems is the created simulator of vehicle enabling testing of computational models in real time.

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