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Resistance saw
Kalčík, Petr ; Minárik, Vladimír (referee) ; Procházka, Petr (advisor)
This work is focused on the design and construction of component parts of resistance saw. Mechanical parts consist of a movable bracket and a taut cutting wire of Constantan. Electrical parts are designed to supply and control temperature of the cutting wire. The current intensity in the cutting wire is compared with the required current intensity. The difference of these two measurements is fed into a PI - controller. The next part is a PWM generator which generates the square wave signal. The pulse ratio of this signal is proportional to the required temperature of the cutting wire. This signal switches a switching converter that consists of a power transistor P-MOSFET IRF5210 and a diode MBR20100CT. Choking coil with a ferrite E core and with the cutting wire is connected to the output of the converter.
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Two-axle drive with EC Maxon motors
Nevole, Josef ; Minárik, Vladimír (referee) ; Pazdera, Ivo (advisor)
The content of this master´s thesis is compact complex piece of knowledge from semestral projects 1 and 2. These semestral projects deal with analysis two-axle servo - drive, most common methods design regulators, design regulators and their simulation. Further was analysed quality regulation integral criteria, whereupon connect simulation circular and linear interpolation. Simulation was effected by force of Matlab Simulink. In one’s chapter was tested effect feedforwards to regulation. In closing parts is acquaint with control section position EPOS, and programming environment Open PCS company Maxon. In this environment was biaxial drive with EC motors Maxon and control section EPOS P 24/5 programmed. Results was discusseds with simulation.
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DC/AC inverter with digital control
Štaffa, Jan ; Pazdera, Ivo (referee) ; Minárik, Vladimír (advisor)
This work is focused on single phase inverters, which are used for the conversion of the direct current to the alternating current and are nowdays used especially in systems of back-up power supply. The specific aim of this work is implementation of design hight power circuit of inverter include calculation of control algorithm. It describes the complete solution of power circuit. Next step is a analysis of problems concerning the digital control with help of signal processor which is used for solution of regulator structure. Check of the design and checkout of control algorithm is made in the form of simulation in the MATLAB Simulink. Debugged program algorithm is subsequently implemented into the signal microprocessor. The work results rate estimation functionality of inverter and solution of control algorithm.
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Switched power source for electroplating
Janků, Roman ; Minárik, Vladimír (referee) ; Červinka, Dalibor (advisor)
The thesis deals with the switching source for electroplating. The theoretical principles of galvanizing, the optimal technological process and a list of most commonly used metals are described. There is also a list of well-known producers, and a description of their resources for electroplating, which have the same output parameters. In the second part of the work there is an introduction of the already-completed school source 2000A/20V, major technical imperfections is solved there. There is also proposition of technical layout made in 3D AutoCAD. Finally, there is an economic analysis of the production costs of the source and a research in suitable suppliers of components and materials. The thesis contains an estimate of the selling and total price compared with competition.
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Switched power source for electroplating
Janků, Roman ; Minárik, Vladimír (referee) ; Červinka, Dalibor (advisor)
The thesis deals with the switching source for electroplating. The theoretical principles of galvanizing, the optimal technological process and a list of most commonly used metals are described. There is also a list of well-known producers, and a description of their resources for electroplating, which have the same output parameters. In the second part of the work there is an introduction of the already-completed school source 2000A/20V, major technical imperfections is solved there. There is also proposition of technical layout made in 3D AutoCAD. Finally, there is an economic analysis of the production costs of the source and a research in suitable suppliers of components and materials. The thesis contains an estimate of the selling and total price compared with competition.
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Resistance saw
Kalčík, Petr ; Minárik, Vladimír (referee) ; Procházka, Petr (advisor)
This work is focused on the design and construction of component parts of resistance saw. Mechanical parts consist of a movable bracket and a taut cutting wire of Constantan. Electrical parts are designed to supply and control temperature of the cutting wire. The current intensity in the cutting wire is compared with the required current intensity. The difference of these two measurements is fed into a PI - controller. The next part is a PWM generator which generates the square wave signal. The pulse ratio of this signal is proportional to the required temperature of the cutting wire. This signal switches a switching converter that consists of a power transistor P-MOSFET IRF5210 and a diode MBR20100CT. Choking coil with a ferrite E core and with the cutting wire is connected to the output of the converter.
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DC/AC inverter with digital control
Štaffa, Jan ; Pazdera, Ivo (referee) ; Minárik, Vladimír (advisor)
This work is focused on single phase inverters, which are used for the conversion of the direct current to the alternating current and are nowdays used especially in systems of back-up power supply. The specific aim of this work is implementation of design hight power circuit of inverter include calculation of control algorithm. It describes the complete solution of power circuit. Next step is a analysis of problems concerning the digital control with help of signal processor which is used for solution of regulator structure. Check of the design and checkout of control algorithm is made in the form of simulation in the MATLAB Simulink. Debugged program algorithm is subsequently implemented into the signal microprocessor. The work results rate estimation functionality of inverter and solution of control algorithm.
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Two-axle drive with EC Maxon motors
Nevole, Josef ; Minárik, Vladimír (referee) ; Pazdera, Ivo (advisor)
The content of this master´s thesis is compact complex piece of knowledge from semestral projects 1 and 2. These semestral projects deal with analysis two-axle servo - drive, most common methods design regulators, design regulators and their simulation. Further was analysed quality regulation integral criteria, whereupon connect simulation circular and linear interpolation. Simulation was effected by force of Matlab Simulink. In one’s chapter was tested effect feedforwards to regulation. In closing parts is acquaint with control section position EPOS, and programming environment Open PCS company Maxon. In this environment was biaxial drive with EC motors Maxon and control section EPOS P 24/5 programmed. Results was discusseds with simulation.
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Faktory ovlivňující úspěšnost regenerace brownfields na území města Ústí nad Labem
Minařík, Vladimír
The subject of this thesis is the issue of brownfields in the city of Usti nad Labem. The aim of the paper is the analysis of the current state of these fields and exploration of factors influencing restoration. The paper includes a discussion with experts on the given issue and suggests possible ways to use the brownfield areas. The study begins with a theoretical definition of the concept of brownfields, which is then further broken down. There is also an evaluation of the reason for the choice of this location and the present state of its restoration. It is hoped that this analysis will be beneficial to the city of Usti nad Labem. Representatives of the city were actively involved in the study and the author hopes that the analysis and discussion results will be useful to them.
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