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Adaptation of parameters in fuzzy systems
Fic, Miloslav ; Jura, Pavel (referee) ; Jirsík, Václav (advisor)
This Master’s thesis deals with adaptation of fuzzy system parameters with main aim on artificial neural network. Current knowledge of methods connecting fuzzy systems and artificial neural networks is discussed in the search part of this work. The search in Student’s works is discussed either. Chapter focused on methods application deals with classifying ability verification of the chosen fuzzy-neural network with Kohonen learning algorithm. Later the model of fuzzy system with parameters adaptation based on fuzzyneural network with Kohonen learning algorithm is shown.
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Water Jet Cutting
Odehnal, Ondřej ; Fic, Miloslav (referee) ; Kárník, Jan (advisor)
The following bachelor’s thesis deals with an unconventional technology of waterjet cutting. Content of the thesis is focused on the description of the technology, basic classification and description of utilization methods. Machinery used in this technology is described below. At the beginning, this work introduces the history and describes the principle of the water jet. Following is the classification of the methods used for water jet. The most important components of devices operating with this technology are described in the next section. The last part is the description and evaluation of an experimental verification of theoretical knowledge. The quality of cut and the behavior of the water jet was examined for different cutting parameters on cutting samples. Evaluation of the thesis is included in the conclusion.
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The force of water jet on a flat surface
Kasal, Milan ; Soukup, Lubomír (referee) ; Fic, Miloslav (advisor)
This bachelor thesis discusses about the theory of fluid mechanics. In the first part of work are listed the basic hydrodynamic laws for ideal and real fluid. Further there was derived force acting on the surface. The second part is devoted to the practical use of force water jet to generate electricity and cutting of material. The objective of the last section, was practical verification of derived relations during laboratory measurements.
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Modal analysis of the swirl turbine runner
Valo, Lukáš ; Fic, Miloslav (referee) ; Čupr, Pavel (advisor)
The bachelor’s thesis deals with modal analysis of the swirl turbine runner. The main aim was to determine natural frequencies and mode shapes of the turbine runner. Both detailed and simplified models of geometry of the turbine runner were analysed for two types of boundary conditions. The ANSYS program was used to carry out numerical simulations. Experimental measurement was realised to verify and to compare results of calculations.
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Design of a micro waterpower turbines for low head and low dicharge
Macek, Libor ; Fic, Miloslav (referee) ; Štigler, Jaroslav (advisor)
This diploma thesis discusses the issue of finding type of water turbine for very low heads and low discharges, which could be operated as mobile micro hydropower plant in island mode. Thesis deals with summary of appropriate choices of water turbine for needs of micro hydropower plant. Essential part of diploma thesis deals with design of optimized waterwheel. Waterwheel was chosen because commercial high-speed turbines have low efficiency for low heads. Waterwheel was manufactured and measured in laboratories of Fluid engineering. Measurement output was discharge and efficiency characteristic of turbine. The price calculation was made after manufacture.
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Maximum attainable efficiencies of one-stage volute pumps
Galuška, Jiří ; Fic, Miloslav (referee) ; Rudolf, Pavel (advisor)
The bachelor’s thesis deals with European Commission Regulation EUROPUMP for minimun allowable efficiency of the one stage volute pumps. Thesis deals with definition, time table and criteria for measurement these pumps. Further thesis deals with total efficiency of the pipe system in relation to pump efficiency. Follow example of a calculation of the one stage volute pump.
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Models of vehicle´s kinetic energy recovery
Fic, Miloslav ; Vaverka, Michal (referee) ; Nevrlý, Josef (advisor)
The bachelor thesis deals with analysis of existing knowledge in the area of vehicle kinetic energy recuperation models. This analysis is mainly focused on hydrostatic regenerative braking system models. This paper introduces stances of some authors, mathematic relationships and program tools useful for simulation of these models. Afterwards is estimation of shown studies and at least is presented future development of hydrostatic regenerative braking systems. This paper gives a sight of hydraulic recuperation system problems and it could be used as the theoretical element for next research in recuperation models area.
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Automatic Irrigation Systems
Vrbka, Tomáš ; Fic, Miloslav (referee) ; Kárník, Jan (advisor)
This bachelor’s thesis deals with the possibilities of using automatic irrigation systems. The goal of this thesis is to create a design solution for specified parameters of the football pitch. The parameters include dimensions of the pitch and the parameters of already placed pump. In addition to the design solution the thesis includes theoretical part which deals with the description, design and installation of an automatic irrigation system and its components in addition to design solution. The thesis also includes the calculation of pressure losses of the irrigation system and a price estimate for the designed components of the irrigation system.
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Kohonen network
Fic, Miloslav ; Hynčica, Tomáš (referee) ; Jirsík, Václav (advisor)
This Bachelor’s thesis deals with self-organizing networks and its learning mechanism. The activation, adaptation and application of Kohonen network are discussed in this thesis. The program Kohonen neural network is described. The practical part of this work analyzes effect of learning parameters choice on final state of Kohonen network and how do this learning parameters affect learning process. The effect of weight vector initialization on the final best-matching neuron “position” is analyzed.
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Boundary Vorticity Element Method for 2D Fluid Flow
Fic, Miloslav ; Pochylý, František (referee) ; Štigler, Jaroslav (advisor)
This master’s thesis deals with boundary vorticity element method for 2D fluid flow. The aim of this work is to program this method with continuous vorticity lay-out and to validate method with various boundary conditions. The computed results are presented in this work. Advantages and disadvantages of each one boundary condition are pointed out. New one boundary condition for boundary vorticity element method is applied in this thesis.
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