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PMSM robust control
Rajnošek, Michal ; Veselý, Ivo (referee) ; Blaha, Petr (advisor)
This work is focused on robust control of permanent magnet synchronous motors. In the early chapters is given theory to design robust controllers using H infinity method and description and features of permanent magnet synchronous motors. Last chapters contains design of current and speed controllers for specific engines. Functionality of these controllers is verified by simulations.
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Parameter Identification of Permanent Magnet Synchronous Motor
Veselý, Ivo ; Bobál, Vladimír (referee) ; Janeček, Eduard (referee) ; Blaha, Petr (advisor)
The purpose of this dissertation is to design identification methods for identifying a permanent magnet synchronous motor. The whole identification and motor control is carried out in d-q coordinates, and the program used for processing and control was the matlab simulink, together with the real time platform DSpace. The work focuses on two main areas of identification, off-line identification and on-line identification. For offline identification the frequency analysis was used with the lock rotor test to get three main parameters. They are the quadrature and direct inductances and stator resistance. In the online mode, the identified parameters were extended to magnet flux _f identified by MRAS method. The remaining parameters were again identified by frequency analysis, which was adapted into online mode, and simultaneously applied to the identification of several part in one time. The next method is Newton method, which is used for estimating stator resistance of the motor, without the need to apply any signal.
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Methods of Realistic Rendering
Veselý, Ivo ; Hradiš, Michal (referee) ; Zemčík, Pavel (advisor)
This thesis deals with possibility of operation of realistic graphics on commonly used technical equipment. There are discussed methods of realistic rendering for the purposes of the thesis. Especially the method of Ray tracing. The acceleration techniques and abstractions of reality are explained. They are necessary for real-time running such a time-consuming system. The bounding volume hierarchy is hardly discussed. A part of the text is also focused on additional techniques for scene building and for material characteristics of models. There is a section focused on lighting models because of lighting lets us to see things. Great part of thesis is focused on techniques of connecting standard rendering methods and details computed independently at software. On the other hand there are mentioned alternative techniques that are considered as possible future move.
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Algorithm Acceleration on Larrabee Platform
Veselý, Ivo ; Seeman, Michal (referee) ; Zemčík, Pavel (advisor)
Intel Larrabee is one of the first of fully programmable graphical architectures. Thesis describes this many-core architecture by hardware implementation and programmer's model point of view. Larrabee bets on many complete in-order cores, built over x86 instruction set. Cores contains four hardware threads, each with it's own register file, and new vector processing unit. Vector processing unit together with instruction set extension rapidly increases system performance. New cache modes helps to increase throughput even when irregular data structures. This architecture is not focused only on computer graphics nor image processing, but all parallel tasks. Second part of this text deals with hologram synthesis. Specifically, it brings two new methods for patch of point light sources generation with concrete radiation.
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PMSM robust control
Rajnošek, Michal ; Veselý, Ivo (referee) ; Blaha, Petr (advisor)
This work is focused on robust control of permanent magnet synchronous motors. In the early chapters is given theory to design robust controllers using H infinity method and description and features of permanent magnet synchronous motors. Last chapters contains design of current and speed controllers for specific engines. Functionality of these controllers is verified by simulations.
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The implementation of AC induction motor control algorithms in DSP 56F8xxx
Jenča, Pavol ; Veselý, Ivo (referee) ; Blaha, Petr (advisor)
In this bachelor’s thesis a control algorithms for induction motors are solved using the methods PDSFC and DTC. Functional algorithms are developed in C and assembly language and are transferred from Simulink to a digital signal processor series 56F8xxx of Freescale corporation. The thesis describes induction motors, used control methods, control schemes developed in Simulink, control algorithms in C and assembly language for each block of created schemes and comparation of simulated solutions.
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Electrical integration of an auxiliary power units for truck
Pšenčík, Petr ; Veselý, Ivo (referee) ; Beneš, Petr (advisor)
This thesis aims to hardware and software integration of solid oxide fuel cell into a power generator for truck application. Requirements for individual components are defined, especially for main DC/DC converter which allows charging the battery pack with output from fuel cell. Then suitable components are found on the market and incorporated into hardware layout. Operation strategy with safety concept is proposed and consequently integrated into PLC in LASAL Class 2 environment. This is followed by definition of future work which includes testing and possible changes in components. Result is hardware and software design which allows construction of prove-of-concept prototype.
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Mobile Control Unit for Transporting Lungs
Sonnenschein, Jiří ; Veselý, Ivo (referee) ; Sekora, Jiří (advisor)
In the first part of this master’s thesis an overview about lungs (anatomy, physiology and respiratory mechanics) is given. Next sections are focused on description of the mechanical lung simulator and the mobile circulatory module. The use, construction, function, observed parameters and control scheme of the mobile circulatory module is described. Control unit which is divided into separate modules is introduced including description of power supply and communication. In following chapters a description of DCNM (Direct Control and Notification Module) is given.
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Implementation of Electric Motor Control Algoritms in CompactRIO systems
Gléba, Gergely ; Veselý, Ivo (referee) ; Blaha, Petr (advisor)
This master’s thesis deals with the implementation of existing algorithms of electric AC motor control in Matlab Simulink to LabVIEW Control Design and Simulation. The first part of the thesis treats with the deduction of a mathematical model of an asynchronous motor, permanent magnet synchronous motor and with the theory of vector control of AC motors. In the next part there is a brief guide to create simulation algorithms in LabVIEW environment and to create the model of a motor with EMI functions in language C. The last part contains the comparison of Matlab Simulink and LabVIEW simulation tools.
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Electrical motors parameters identification using subspace based methods
Jenča, Pavol ; Veselý, Ivo (referee) ; Blaha, Petr (advisor)
The electrical motors parameters identification is solved in this master’s thesis using subspace based methods. Electrical motors are simulated in Matlab/Simulink interactive environment, specifically permanent magnet DC motor and permanent magnet synchronous motor. Identification is developed in Matlab interactive environment. Different types of subspace algorithms are used for the estimation of parameters. Results of subspace parameters estimation are compared with least squares parameters estimation. The thesis describes subspace method, types of subspace algorithms, used electrical motors, nonlinear approach of identification and comparation of parameters identification.
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