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Diesel railroad vehicles drive concepts
Polcer, Pavel ; Knotek, Jiří (referee) ; Zubík, Martin (advisor)
Thesis deals with diesel railroad vehicle drive concepts, in other words transmission of power from diesel engine to driven wheels. Currently used drives are described in terms of functionality, limitations and efficiency. Numerical model, which simulates rail vehicle journey, is used to compare efficiency of drives, or more accurately, energy needs for their operation. Based on the numerical model, suitable drives are recommended.
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Design of multi-functional machining centre
Cvejn, Jiří ; Holub, Michal (referee) ; Blecha, Petr (advisor)
The purpose of this diploma thesis is a design of frame, crossbar, transverse feed, sliding feed of multifunctional machining center. In the first part, there is a brief research of history of machine tool conducted, division of machining centers, materials for frame construction, alternatives of drives of sliding axis. Further, I carry out an analysis of parameters of compeeting machine tools, from which I selected the parameters of our machine. Frame project of the machine, propulsion of axis X and Y, kinematic connection of axis X,Y,Z. Frame of machine is analysed by Finite Element Method. Over the scope of this work I suggest a solution for covering of linear axis as well as their measuring of actual position. 3D model of frame and drives of machine are included in this work. A complete formation has been introduced into the immersive virtual reality environment.
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Design of controlled drive for parallactic mounting
Šulc, Dalibor ; Grepl, Robert (referee) ; Krejsa, Jiří (advisor)
The aim of this bachelor’s thesis is exploration of facts about drives for parallactic mounting and its design with microprocessor control. In the thesis there is also described the tandem governor and the nonlinear position computing method. One part of this thesis is the complete scheme of mounting electronics, computing and measuring differences between real and theoretic position. The last part of the thesis focuses on the specification of other possible problems, which can bring inaccuracy into taking pictures.
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