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Tyre Mathematical Models
Rubíček, Pavel ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
Today the tire is an integral part of the vehicle. During its development is used in various methods. This publication deals with some of them. In her research is necessary to know its features and design solutions. Basic tire structure is described in the first part. These findings are then fit to the other chapters. In the second part there are examples of several tire models in the form of mathematical equations. These equations are used to determine the force and moment loads acting on the tire. The resulting load may aid in the design of new types of tires. The last part describes how to use mathematical models to calculate and here are other methods how else can it gets information about the load on the tire. There is a list of organizations that deal with simulations and tests.
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Precast concrete structure of production hall
Hradský, Richard ; Kostiha, Vojtěch (referee) ; Girgle, František (advisor)
The main part is design and calculation of the transversal frame of industrial building consisting of those parts (girder, column, foundation pad). Computational software SCIA ENGINEER is used for design, calculation and drawing of those forces, moments and stress of elements. The verify of the results and their accuracy is applied handdone static calculation of forces, moments and stress. The drawings of those elemenst will be producted by Computational and drawing software ArchiCAD.
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Interconnects modelling for signals transmission
Fabián, Martin ; Petržela, Jiří (referee) ; Brančík, Lubomír (advisor)
In this work, there is solution for problem about signal itegrity and problems that causes raising frequence in circuits and machineries. There is describe interconnect analysis of models, which enable transfer of signals in mixed analog – digital circuits and a different between the analyse of an time domain and an s-domain. Next, there are described three methods of the calculation homogenous transmission line.The first method is constructed on mathematic description of transmission line. The second method uses cascade connection and T networks to the simulation model of the homogenous transmission line. The last one is constructed on the moment matching in use of state variables. These methods uses numerical inversion of Laplace transforms and these methods are constructed in programming language Matlab. Its results with the confrontation is described in the ending.
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Control of asynchronous motor
Semerád, Jiří ; Pazdera, Ivo (referee) ; Běloušek, Josef (advisor)
The thesis is focused on asynchronous motors. The first part deals with construction, principles of function and speed-torque characteristics of the motors. Furthermore, a mathematical model of an asynchronous motor in Matlab-Simulink program is created in order to make a possibility to test any type of motor and check all parameters, which is more economical than testing real objects. The second part of the work contains an overall summary of asynchronous motor control methods.
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Grapple saw for loading crane
Koumar, Martin ; Pokorný, Přemysl (referee) ; Kašpárek, Jaroslav (advisor)
Aim was create "proposal grapple saw on round timber and sawn wood for loading hydraulic crane" of submitted work. Submission contained these entry conditions: maximum outreach, lifting moment, allowed load at setout 4m, other characteristics according to elect tractor trailer with loading crane those category. Estimate sectional surface grab and proposal basic proportions grapple saw was processed at first. Model was solved of grapple saw further. Check calculation of part of grapple saw were next step largely and option some components. Detailed assembly drawing was processed of grapple saw, drawings of parts and item list. Option quality materials and their ovenware were effected for individual single parts grapple saw also.
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Design of synchronous spoke motor
Kopecký, Jan ; Bulín, Tomáš (referee) ; Knebl, Ladislav (advisor)
This thesis is focused mainly on the theoretical research of permanent magnet synchronous motors. In addition, various methods of designing the motor‘s magnetic circuit are discussed and their advantages and disadvantages are compared. The reluctance network method is analyzed more thorough, because this method is used for motor designing process. In the last part the results obtained by reluctance network are compared with the results evaluated by finite element method.
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