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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.
211

Analýza měřených dynamických stavů motocyklů / Analysis of measured dynamic states of motorcycles

Tobiáš, Martin January 2019 (has links)
This thesis, within a long-term project at the Institute of automotive engineering at FME BUT, aspires to prepare a motorcycle for analysis of its dynamic riding behavior. A multi-body model of a motorcycle is created based on the measured parameters and a system for measuring driving conditions is designed. The necessary motorcycle parameters were measured using a 3D scanner and through experiments aided by computer technology and CAD software. This laid the foundation for the follow-up research and development work.
212

Numerické modelování proudění v bezpečnostním přelivu vybraného vodního díla / Modelling of Flow over Spillway of a Dam

Desatová, Martina January 2020 (has links)
This thesis deals with mathematical modelling of water flow through the safety object. It explains the principle of mathematical modelling and its laws. There is also present-ed the mathematical models used by numerical modelling. The results of mathemati-cal model Koryčany are included in this thesis compared with hydraulic calculations and physical model.
213

Sada testovacích úloh pro měření odezvy lidského operátora / A Set of the Testing Tasks to Measure Human Operator Responses

Pátek, Tomáš January 2020 (has links)
This master’s thesis deals with the design of a simulator for measuring the response of a human operator in the MATLAB program and the Simulink extension. The first part summarizes the theory of mathematical models of human operator, which is followed by a description of a simulator for response measurement with a graphical user interface. In the last part, the basic measurement of human operator response to different scenarios, comparison of quality of control for different operators and identification of model for individual operators are performed.
214

Řízení pohybu rotačního inverzního kyvadla / Control of a rotational inverted pendulum

Bednář, Ladislav January 2020 (has links)
The goal of this work is modelling and design of an inverted pendulum prototype. The work presents a mathematical model of a rotary pendulum, modelling of a BLDC motors and also a 3D model of the pendulum prototype is present. The work mentions design of the state space controller and swing up control of the inverted pendulum. Dynamics obtained from the mathematical model is used to create a 3D dynamic model of a pendulum, with the use of the Simscape toolbox. The work deals with control of a BLDC motors with use of vector control. The algorithm is implemented on the CompactRIO platform. Later, hardware is developed, containing STMicroelectronis microcontroller, capable of replacing the CompactRIO platform.
215

Model zplyňování biomasy / Biomass gasification model

Studený, Vojtěch January 2020 (has links)
Mathematical models of gasification are suitable for predicting gas composition and its properties. The aim of the diploma thesis is to compile a mathematical model for biomass gasification. The first part deals with the description of gasification and the technologies used. Theoretical part consists of the search of modeling methods. Other theoretical part is devoted to the description of the model and equations presented in the thesis. Part of the assignment is a parametric study that shows changes in gas production and its properties when changing the parameters. Finally, the model is compared with the data obtained in the experiment on the fluid reactor biofluid 2.
216

Nápravový samosvorný diferenciál / Axle Limited-Slip Differential

Csémi, András January 2020 (has links)
The topic of this master‘s thesis is the axle Limited-slip Differential. The first part is devoted to the description of types of differentials open, locked or self-locking. The next part describes the procedure of creating a mathematical model for the simulation of vehicle movement based on input parameters and subsequent comparison of vehicle behavior with open and locked differential. The final part of the work based on data obtained from the model with a Limited-slip Differential is devoted to the design of a differential for a vehicle with one driven axle.
217

A Global Spatial Model for Loop Pattern Fingerprints and Its Spectral Analysis

Wu, Di 08 1900 (has links)
The use of fingerprints for personal identification has been around for thousands of years (first established in ancient China and India). Fingerprint identification is based on two basic premises that the fingerprint is unique to an individual and the basic characteristics such as ridge pattern do not change over time. Despite extensive research, there are still mathematical challenges in characterization of fingerprints, matching and compression. We develop a new mathematical model in the spatial domain for globally modeling loop pattern fingerprints. Although it is based on the well-known AM-FM (amplitude modulation and frequency modulation) image representation, the model is constructed by a global mathematical function for the continuous phase and it provides a flexible parametric model for loop pattern fingerprints. In sharp contrast to the existing methods, we estimate spatial parameters from the spectral domain by combining the exact values of frequencies with their orientations perpendicular to the fingerprint ridge flow. In addition, to compress fingerprint images and test background Gaussian white noise, we propose a new method based on periodogram spacings. We obtain the joint pdf of these m-dependent random variables at Fourier frequencies and derive the asymptotic distribution of the test statistic.
218

Řízení stejnosměrného motoru / Control of DC Motor

Šálek, Jan January 2014 (has links)
This diploma thesis is focused on sensorless DC motor control based on its mathematical model. This solution will be used for Honyewell actuators (type ML5410 and N10010/N05010). The aim of this thesis is to find out if there is a possibility to use this type of motor control for future to replace the existing type of motor control using Hall sensor for measuring speed of motor.
219

Zhodnocení výstavby kanalizačního sběrače v Pardubicích metodou mikrotunelování a posouzení možností dalšího využití této technologie v pěších zónách města. / Evaluation of the construction of sewer in Pardubice-city microtunnelling method. Assessing the possibilities of further use of this technology in pedestrian areas of the Pardubice-city.

Maršálek, Jan January 2013 (has links)
Diploma thesis deals with using microtunneling method in Pardubice-city. Evaluate construction of sewer and assessing the posibilities of furthert use of this technology. The work include static assessment of jacking pipes. Mathematical modeling is used in software Plaxis 8.2.
220

Matematický model solárního sušení kalu z čističky odpadních vod / Mathematical model of solar drying of sewage sludge

Ficza, Ildikó January 2010 (has links)
Solární sušení je mimo jiné energeticky nenáročná a tudíž vysoce ekologická cesta pro zpracování kalů z malých čistíren odpadních vod. Výsledkem tohoto procesu je produkt, který je velmi dobře použitelný v zemědělství jako přírodní hnojivo. V rámci této práce bude sestaven zjednodušený dynamický model sušení vrstvy kalu s jednou prostorovou souřadnicí. Tento model bude diskretizován pomocí vhodné numerické metody a bude provedena jeho implementace do výpočtového programu v prostředí MATLAB.

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