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MATLAB/Simulink, Real-Time simulation and control
Malík, Dalibor ; Chomát, Luděk (referee) ; Dvořáček, Martin (advisor)
This bachelor thesis provides information about a possibility of implementing the real-time, a serial line RS-232 and communication with a programmable controller (PLC) by Bernecker &Rainer (B & R) in MATLAB / Simulink evironment. Further, it provides information about options of creating a block in MATLAB / Simulink, modes of operation of the simulink and implementation of blocks to the blockset. In the proper communication with PLC the principle of PVI is described, the terminology connected with PVI is explained and setting and maintaining the communication between a source station and PLC is specified.
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Comparative study of PID and PSD Controllers
Staněk, Viktor ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
Description of PID and PSD controllers structures. Verification of function of heterogeneous structures of PSD controllers on typicall transfer functions. Respones to changes of input value. Effect of change of sampling period on PSD cotrollers. Verification of influence of derivative part of PS-D and S-PD controllers.
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Comparative study of discrete PSD controllers
Vaňková, Tereza ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
Bachelor’s thesis is focused on a verification of heterogeneous structures of discrete PSD controller depending on different process structures. The first theoretic part describes a continuous action controller, a transformation from the continuous to the discrete control and a discrete control loop (with issues like a sampling, a quantization, a signal shaping). Further there are described the concrete structures of the discrete PSD controllers – from the classical PSD controller over the variations with filtration in a derivative part to the structures with an elimination of the oscillation and the first overshoot. There are also mentioned two methods of controller parameters´ setting– second Z-N method (based on finding out critical parameters of the system) and a balanced setting of controllers. Second, practical, part of thesis contains particular results, which were found out by measuring on the simulation and real models. Finally achieved results are compared with an adaptive controller of B&R company.
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Control of 3-axis PCB drill
Kresta, Martin ; Dvořáček, Martin (referee) ; Macho, Tomáš (advisor)
This thesis is focused on design and realization of 3-axis PCB drilling machine. Design comes from mechanical construction of inkjet printer and reusing most of original actuators. This thesis is mainly focused on design of control electronic circuits and software equipment. The whole machine is controlled by 8bit AVR microcontroller ATmega64. Machine is also equipped with USB interface for communication with PC application. This feature allows automatic processing of CAM files from PCB design systems.
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Industrial PID controller with autotuning and visualisation
Vávra, Pavel ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
This thesis deals with implementation of industrial used controlling block into Power Panel equipment of B&R in integrated development environment Automation Studio 3.0.71. It is PID controller with autotuner and visualization, which allowed bumpless transfer among controlling algorithms and manual control. PID and I-PD controllers with filtering of derivative action and dynamic antiwindup were implemented. Parameters of PID controller is possible to tune with the aid of ultimate gain and ultimate period according rules of Ziegler-Nichols. Ultimate parameters of controlled plant is possible to acquire with the aid of two identification methods, recursive least squares method and relay feedback. Recursive least squares method was implemented with directional forgetting. For relay feedback were used two types of relays: ideal and saturation relay for improving accuracy of searched ultimate values. The whole solution is programmed in ANSI C which Automation Studio supports. Created controller is control with the aid of touchscreen which is integrated in Power Panel. Trends of process values are viewed on the screen too. For comparison adaptive controller by B&R was implemented. This contoller is standardly supplied with Automation Studio in LoopConR library. All created algorithms were first validated on mathematical model of plant and then on real model in laboratory. The first part of thesis deals with theoretic analysis of used methods. The practical realization is described in the second part of this diploma thesis.
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Model for energy control from solar panel
Hromek, Jiří ; Dvořáček, Martin (referee) ; Malounek, Petr (advisor)
This is specifies problems of electricity development from the sun. It informs about the principles and especially means of optimizing of extracting maximum. There is created a prototype in the Matlab/Simulink environment representing a source of radiation and a solar panel. A prototype output is an extracted voltage for a different angles of panel tilt compared to a light source and a different lighting intensity. A prototype is practically realized then. Then there is devised a procedure of prototype for a maximum voltage extracting from solar panels. A prototype is liable to connect to the programmable controller of B&R company.
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Estimator in control systems with variable structure
Dvořáček, Martin ; Mikšánek, Vojtěch (referee) ; Pivoňka, Petr (advisor)
The thesis write about the linear discrete time incremental estimators. These are used for the choice of the best control system in systems with variable structure and further for direct control with status controller. There is an application of this on physical plane. In this paper PID variation controllers are discussed and optimized using Nelder-Mead Simplex Method. Feedback control with optimal PID is compared with control using linear discrete incremental estimators and status regulator.
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Model of electric furnance for heat-resistant material processing
Franek, Lešek ; Malounek, Petr (referee) ; Dvořáček, Martin (advisor)
Content of the document is to create model of kiln, compare result with the real kiln. There is described 3D design in SolidWorks application, creation of a physical model in COMSOL Multiphysics and its export to Simulink. Subsequently is described the Simulink scheme, functions of program parts and visualization in B&R Automation Studio. The obtained results are compared with measured values. There is also described the design of a controller with a off-line identification.
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Investments of the Automotive Industry in Precious Metals as Strategic Materials
Dvořáček, Martin ; Plíhal, Tomáš (referee) ; Rejnuš, Oldřich (advisor)
The subject of the thesis is the investment recommendations of companies operating in the automotive industry to purchase strategic raw materials, such as in particular platinum, palladium and rhodium. Thesis include a theoretical description of the topic, respectively certain forms of hedging, instruments used to hedge and brief characteristics of precious metals. Analytical and proposed section of the thesis contains specific methods, procedures and its own approach used to meet the global target of thesis.
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Fundamental Anylysis of Selected Stocks
Dvořáček, Martin ; Henešová, Šárka (referee) ; Sojka, Zdeněk (advisor)
This thesis deals with the fundamental analysis of stocks selected Telefónica Czech Republic a.s. This paper contains a theoretical description of the use of fundamental analysis including a description of the specific models use dinfundamental analysis as a tool for determining the intrinsic value of traded shares. In the practical part I apply this analysis to the selected share with the help of publicly available information.
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