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Computer simulator for education
Friml, Dominik ; Macho, Tomáš (referee) ; Petyovský, Petr (advisor)
This bachelor thesis is divided into several parts. The first part consists of an introduction to individual parts of a processor and some of its peripheries. Next part of thesis is a research of existing educational and demonstrative tools usable in education. Results of the research were compiled into requirements for educational system. Using those requirements, and design of an architecture for educational processor for education, not only on FEEC BUT was created. As a next step, there is described a procedure, that led to a creation of a working simulator of the designed processor. Last part of this thesis is a design of several educational exercises, that demonstrates principles of computers and programming in a machine code and an assembly language.
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Comparison of H-infinity and LQG controller
Friml, Dominik ; Blaha, Petr (referee) ; Pohl, Lukáš (advisor)
This thesis deals with the MIMO system analysis, with a comparison of a different frequency charactersitics, and including singular values characteristic. The H2 and H norms are defined for signals and a MIMO systems. A MIMO optimal control using an LQG, an H2 and an H control is defined and described. Their general advantages, disadvantages and similarities are summed up. An H2 and an H state controller and state observer synthesis is implemented in a MATLAB using linear matrix inequalities. Control of an inverted pendulum is designed using the H optimal cascade control, the H2 state control and the H state control. The results are compared with each other. The theoretical possibility of same H2 and H optimal state controller design is presented.
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Web Intercase for Building Control System with BACnet protocol
Kretek, Tomáš ; Friml, Dominik (referee) ; Václavek, Pavel (advisor)
This bachelor thesis analyzes the basic features of the BACnet protocol, which is followed by visualization platforms and tools ThingsBoard, OpenHAB and Node-RED. The BAC0 library and the BOSS Simulator program are selected for the BACnet device simulation. The ThingsBoard platform is used to demonstrate the functionality with the BAC0 library, which allowed the design of a two-room model with heating and heat transfer through the walls. At the end of the work, the operation of the ThingsBoard platform on a Raspberry Pi computer is evaluated.
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Robust Student estimator
Hlavinka, Radek ; Friml, Dominik (referee) ; Dokoupil, Jakub (advisor)
This Master's thesis deals with Bayesian approach to robust parameter estimation for ARX models. Robustness is achieved by assuming the measurement noise to be generated by Student-t distribution. The asumption of Student-t noise renders the model's posterior intractable and requires utilization of approximation techniques. This thesis considers algorithms using Gibbs sampler and Variational approximation and compares them with Ordinary Least Squares. The algorithms are compared based on their Maximum Likelihood estimation. It is shown that approaches assuming the Student-t noise perform better in simulation. The results from data acquired from physical system are however similar for all algorithms considered.
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Pellet grill control system
Vařečka, Ondřej ; Friml, Dominik (referee) ; Dokoupil, Jakub (advisor)
This thesis focuses on determination of basic requirements for a pellet grill control system. It also explores expansion possibilities of these requirements with respect to user-friendliness. The thesis also includes a description of the system represented by the grill using differential equations and simulations of temperature responses during heating and cooling. After establishing the requirements for the grill control system, suitable components are selected to achieve an optimal balance between functionality and cost. The next step involves the creation of a functional schematic using the KiCad software. A printed circuit board (PCB) is designed and assembled using the components. Finally, the PCB is powered, and firmware is developed to control peripherals.
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Implementation of mechatronic demonstration device
Fedor, Filip ; Pohl, Lukáš (referee) ; Friml, Dominik (advisor)
Paper covers implementation of mechatronic demonstration device using PMS motor. It consists of four parts. Part one lists mechatronic demonstration devices and chooses the appropriate one to be build. Part two explains means of driving PMS motor with focus on FOC algoritm. Part three covers real-life demonstration of torque and position control of PMS motor. In part four suitable motor is chosen using mathematical modeling. Part five covers assembly and testing of mechatronic demonstration device.
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Robust Student estimator
Rázek, Stanislav ; Friml, Dominik (referee) ; Dokoupil, Jakub (advisor)
The diploma thesis deals with the formulation of the algorithm for estimating the parameters of the linear ARX model with Student's noise using approximate Bayesian inference. The topics of Student's noise, Approximate Bayesian inference and Student's algorithm are discussed. The formulated parameter estimation algorithm is compared with other model parameter estimation methods and evaluated. At the same time, the Student's filter is derived and its connection with the Kalman filter is discussed.
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Web Intercase for Building Control System with BACnet protocol
Kretek, Tomáš ; Friml, Dominik (referee) ; Václavek, Pavel (advisor)
This bachelor thesis analyzes the basic features of the BACnet protocol, which is followed by visualization platforms and tools ThingsBoard, OpenHAB and Node-RED. The BAC0 library and the BOSS Simulator program are selected for the BACnet device simulation. The ThingsBoard platform is used to demonstrate the functionality with the BAC0 library, which allowed the design of a two-room model with heating and heat transfer through the walls. At the end of the work, the operation of the ThingsBoard platform on a Raspberry Pi computer is evaluated.
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Derivation And Practical Comparison Of Recursive Ls And Tls System Identification Methods
Friml, Dominik
The least squares (LS) type of methods are the most widely used methods in system identificationdespite their obvious imperfection. Such methods use a regressor, that is supposed not tocontain any error, notwithstanding that it is constructed from measured data. This can be solved byusing the total least squares (TLS) type of methods. Derivation of both batch and recursive methodsof LS and TLS for identification and their practical comparison is presented in this paper
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Quality Improvement Of Lqg Control Using H∞ Optimization
Friml, Dominik
This paper describes the method of using H¥ optimization for tweaking of the existing structured controller. This method is presented on an example of LQG controller for the classical problem of the inverted pendulum on a cart. This means, that it is applicable not only on controller problems, but also on observer problems.
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