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Control Systems
Vala, Jiří ; Konvalina, Jiří (referee) ; Kunovský, Jiří (advisor)
The MSc Thesis deals with real-time modelling, especially with the control circuits, where we focus on the regulation circuit with auxiliary model of the regulated system. The introduction contains the Theory of Controls and regulation. The work is divided into two basic parts. The first part deals with the problems from the theoretical point of view. The theoretical part is concerned with the general systems. Various definitions of systems, their partition and mathematical methods for their description are mentioned after introducing. A description the regulation circuits, their partition, structures and types follows. There are shown the particular regulators and different types of regulated systems in details. Mathematical methods applied to solve the differential equations that describe the models of the systems are summarized in the second part of the work. The end of this chapter is concerned with the TKSL system. In the practical part I have produced Microsoft Power Point program which summarizes the results of experiments, made in the TKSL and TKSL/C system. The output of simulation was transformed into the graphs in the format of Microsoft Excel. The last part deals with suggestion and implementation simulators of control circuits.
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Eliminator of dental calculus
Šobich, Adam ; Sekora, Jiří (referee) ; Rozman, Jiří (advisor)
Bachelor’s thesis is focused on system design of eliminator of dental calculus operating at a frequency of 27 kHz and reaching the intensity of ultrasound on the applicator tip to 5 W/cm2. The work analyzes problems of dental calculus, principle of ultrasonic waves and the physical phenomena occurring in the environment, which it passes. Another part of the work describes the creation of waves using ultrasonic transducer and the amplification of ultrasound in the waveguide. Practical part of work is presented by functional diagram, which describes the sequence and function of the main parts of the device. The Bachelor’s thesis presents individual steps for design of applicator and the circuit for eliminator of dental calculus, including calculations and diagrams. The resulting circuit is experimentally verified and supplemented with draft of the printed circuit board.
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Two-quadrant regulated power supply for laboratory purposes
Kalus, Jiří ; Vorel, Pavel (referee) ; Knobloch, Jan (advisor)
The main goal of the bachelor´s thesis is a suggestion of switching power supply with energy absorption for the case of two-quadrant load. The source includes of three parts: the power for the control circuit, single-converter and absorber of the recovered energy. Output power source is 400 W and output voltage 0 to 40 V, current +10 / - 10 A. This bachelor´s thesis deals with the first half of the circuit description and the second part there are analysis and the suggestion. Scheme and printed circuit cards are in attachment.
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Step down convertor
Koutný, Martin ; Kadlec, Josef (referee) ; Cipín, Radoslav (advisor)
Thesis deals with the evaluation of the solutions and the design of the DC voltage converters. The first describes the different types of converters, which subsequently choose types of resources for the construction. In other chapters of the work devoted to the design of schemes, selected types of sources and selection of circuits and components therefor, for the manufacture, including calculations cooling performance parts. The last chapter is devoted to the description of the structure and measurement of the produced sources. The measurements are primarily deals with the verification of the specified parameters.
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Charger for lead-acid accumulators 12V with the aditional fuction "start-car"
Benada, Tomáš ; Červinka, Dalibor (referee) ; Vorel, Pavel (advisor)
This thesis is engineering design of the intelligent CHARGER FOR LEAD-ACID ACCUMULATORS 12V WITH THE ADDITIONAL FUNCTION "START-CAR". It contains calculations of each component. The switching power supply is the mainstay of the charger that makes the charger small, lightweight and portable. The Intelligent CHARGER FOR LEAD-ACID ACCUMULATORS 12V WITH THE ADDITIONAL FUNCTION "START-CAR“ charges the accumulator by method of constant voltage with current limitation of 0,5A, 5A, 20A, 50A. 50A current is used in winter during starting of a car, when the battery can´t provide sufficient current. The device comprises safety protection for the charger, supply network and battery. There are three LEDs placed on the front side of the charger reflecting status of the device.
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Position control of servo with discontinuouns rechangeable speed
Jindra, Pavel ; Věchet, Stanislav (referee) ; Němec, Zdeněk (advisor)
Diploma thesis work includes simulation of compensation of control for discrete. The aim of the work is a solution positioning control of servomotor drive piston, which is controlled by pass of the pressure oil with the help of several electromagnetically controlled switchboards with the orifice in the output channels. The verification activities of the regulated system is done using simulation in Matlab/Simulink and Matlab/Simulink, Matlab/Hydrosim. The requirement on the created model is to verify the behavior of the system to be modified to be used for the further development of the issue
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Position control of servo with discontinuouns rechangeable speed
Jindra, Pavel ; Věchet, Stanislav (referee) ; Němec, Zdeněk (advisor)
Diploma thesis work includes simulation of compensation of control for discrete. The aim of the work is a solution positioning control of servomotor drive piston, which is controlled by pass of the pressure oil with the help of several electromagnetically controlled switchboards with the orifice in the output channels. The verification activities of the regulated system is done using simulation in Matlab/Simulink and Matlab/Simulink, Matlab/Hydrosim. The requirement on the created model is to verify the behavior of the system to be modified to be used for the further development of the issue
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Relay output module for electronic tachograph
Feilhauer, Petr ; Sirka, Martin (referee) ; Zezulka, František (advisor)
This bachelor thesis contains detailed description of function and wiring current Electronic tachograph RE1xx from company UniControls-Tramex. For comparison there is mentioned description of competitor’s products from this branch. The part of this thesis is analysis of measurement actual speed on the train vehicles and analysis of imaging information to staff of vehicle. The base of this finding is making several projects about future way of development of this electronic tachograph. Main programmes of this thesis are design, implementation and verification functions of module relays outputs for Electronic tachograph RE1xx. Practically design must be satisfy with basic technical-law specifications, which refer of this branch for application this device. Thesis contains the description of single parts of scheme, control microcontroller, using of integrated circuits. Further thesis will contain theoretical calculations, design of main software and his implementation to the module. The aim of design and implementation of module relays outputs is evaluation reached outcomes from view technical solutions, functions and price statement of the module.
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