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Models and simulations of processes of emission-free wheel loader with electric drive
Cieslar, Filip ; Nevrlý, Josef (referee) ; Němec, Zdeněk (advisor)
This diploma thesis deals with the creation of models simulating the processes of an emission-free wheel loader, which was created by rebuilding the original version with a combustion engine. Part of the work is the methodical creation of models from the basic part of the machine to a simplified model of the overall machine, its functional verification and calibration based on available information’s and measurements. In this paper, selected parameters of the overall machine model are verified based on performed measurements, the suitability of selected components is verified, and the optimization and modification of the model is performed based on verification. The aim of the thesis is to present the simulation and verification procedure and its practical use in the development of an emission-free wheel loader with electric drive.
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Motor speed control exhibit with frequency changer
Möhwald, Jiří ; Marada, Tomáš (referee) ; Němec, Zdeněk (advisor)
The following diploma thesis deals with the management of asynchronous motor revolutions by a frequency converter MICROMASTER 440 via the programmable controller S7-200. At the beginning, I researched the company documentation of Siemens, which is the producer of the frequency converter and the programmable controller mentioned above. As my work proceeded, I also started to study the company documentation of Mitsubishi Electric, which produces the operating pannel. The first part of my thesis provides a general description of the stated devices and the second part deals with the solution of the task itself. My task was to design a way of communication between the converter and the controller. I chose a USS protocol via serial port RS-485. The operation of the controller was performed by using an operating terminal type GOT1000 which was connected to the controller. In summary, my diploma thesis primarily deals with the construction of an operating programme for the controller and with creating of a graphical control on the terminal. In the end, I evaluated the knowledge gained during the work on this subject and suggested further procedures.
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Train electric traction units brakes control system
Koukolíčková, Lucie ; Vojáček, Zdeněk (referee) ; Němec, Zdeněk (advisor)
Bachelor thesis is focused on improving main operating system of the electric traction units. The main theme is stronger safety for the unit during the ride and keeping the unit movable if there is some problem with the brakes. First par of the thesis is focused on electric traction units and their brake systems. Second part is most about the new screen implementation. This screen shows, if there is some problem with the brakes and the most important part is the speed controller. It is the instrument for the safety arrival of the unit with some brake damage.
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Pressure and Flow Rate Regulation Design for Pump-Tank System
Kovář, Jiří ; Němec, Zdeněk (referee) ; Svoboda,, Miroslav (referee) ; Březina, Tomáš (advisor)
The proposed work is dealing with control design of pump-tank system as part of broader water-supply network with using of mechatronic approach. The main goal of this work is design of control for regulation of flow, pressure and water level in tank in water-supply network of Vsetin city. This water-supply network consists of various components, such as pumps, pipes, valves, tanks etc. For the purpose of the control design is necessary to create a model of pipe network. The solution of hydraulic analysis is obtained by using the gradient method, which was implemented into the software solution named ADAM. The results of hydraulic analysis are compared with measured values of flow and pressure and difference of these values has to be minimalized by proposed calibration and verification process. The calibration and verification process was implemented in software ADAM. The essence of design control is formulating control problem as optimization problem. Therefore the output of higher control layer is set of procedural rules, which determines for example speed of pumps in time etc. Results were verified by using for this purpose developed computational server (ADAM Server).
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Intelligent double arm juggling machine
Mertlík, Daniel ; Němec, Zdeněk (referee) ; Marada, Tomáš (advisor)
This thesis describes the design and implementation of device called Intelligent two-arm juggling machine. The role of the demonstration project is to control rotational movement of the arm so that the concept of the machine there to swap the ball to the opposite side shoulder. The project is divided into two theses, which this proposal addresses the above mentioned tasks, the machine and place the second level ofcooperative governance through visualization.
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Laboratory exercise for PLC Mitsubishi
Čížek, Lubomír ; Němec, Zdeněk (referee) ; Marada, Tomáš (advisor)
This bachelor's thesis deals with the programmable logic controlles Mitsubishi FX3U-32M, which are a part of equipment in the laboratory of programmable controllers at the Institute of Automation and Computer Science of the Faculty of Mechanical Engineering at Brno University of Technology. The main aim was to make self familiarity with this controller and development system GX IEC Developer 7.01 at first and create an appropriate documentation. There were also created four sample exercises with different level of difficulty to which were made models of corresponding controlled members.
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Teaching documents creation for work in the development system PC WorX
Michalčík, Jiří ; Němec, Zdeněk (referee) ; Marada, Tomáš (advisor)
Thesis contains a description of a development system PC Worx by Phoenix Contact. This system was used as the educational support system. Document includes a set of practical examples with a different complexity. The purpose of examples is to improve the knowledge in programmable logic controller handling. In this case the model ILC 150 ETH (made by Phoenix Contact) was applied. This model is in common use at Institute of Automation and Computer Science laboratories.
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Mechanical pretanning in sewage works
Černý, Marian ; Grosman, Martin (referee) ; Němec, Zdeněk (advisor)
The bachelor thesis contains a literature search dealing with mechanical equipment of waste water treatment plants. After introduction of waste treatment there is stated some description of technical and construction search of particular equipment, system of their operating, analysis of their operation parameters and their using on waste water treatment plants in this bachelor thesis. There are described typical ordering of particular equipment in to technological lines on waste water treatment plants. The bachelor thesis contains description of self-cleaning screen, hand skimmed screen, mechanical coarse screen, mechanical fine screen, equipment for grit and sand removing, skimmed cylinder strainers, screw conveyors, screw presses for screenings with washing and integrated coarse pre-treatment. There are published some schemes, sketches, photos and tables of technical parameters above mentioned equipment in this bachelor thesis. The sketches of technical drawing character are treated in Autodesk ACAD 2005 program.
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