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High frequency signal injection method for PMSM position estimation
Moravec, Vojtěch ; Veselý, Libor (referee) ; Pohl, Lukáš (advisor)
This thesis is focused on the design of vector control of interior permanent magnet synchronous motors. The first part of this work deals with vector control transformations and mathematical modelling of synchronous motors. Furthermore, algorithms of sensorless control are discussed, especially HF injection sensorless methods. One of these methods was used for torque and speed control. Problem of phase delay caused by filters and it’s compensation is also discused. One of the HF injection sensorless method was implemented on both motors. The results of simulations in MATLAB/Simulink and tests of real motors on dSpace are included.
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SW development and testing for engine monitoring module
Sumtsov, Artem ; Sova, Václav (referee) ; Krejsa, Jiří (advisor)
Diplomová práce popisuje vývojovou techniku Model Based Design a její použití pro návrh a testování algoritmů. Popis této techniky je proveden na příkladu praktického využití v praxi při vývoji modulu monitorování stavu motoru ve spolupráci se společností UNIS,a.s. Vývoj v oblasti současné letecké techniky klade velký důraz na monitorování životnosti zařízení. Podle výstupů algoritmu se dají naplánovat preventivní opravy s ohledem na aktuální podmínky opotřebení a provozování. Implementace algoritmů je provedena v prostředí Matlab/Simulink s následným testováním na platformě dSpace
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Modelling and HIL Simulation of Vehicle Boot Door Control
Musil, Filip ; Matějásko, Michal (referee) ; Brablc, Martin (advisor)
This diploma thesis focuses on an analysis, a model creation and simulations of a car boot door mechanism. The problem was analyzed on the basis of real measurements made on three different vehicles. Based on the measurements, computational models describing the real system at different levels of complexity were created. Matlab/Simulink was used to create and calculate the models. The output of the thesis is the simulator of a car boot door which also includes simplified model of a control unit. The simulator should provide an approximation of current and kinematic quantities of these mechanisms. The model is implemented on dSPACE platform that allows real-time simulations. The simulator can be modified in terms of changing the parameters of the mechanism and modifying some of its results.
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Sensorless position control of solenoid valve
Keprt, Jaroslav ; Janák, Luděk (referee) ; Houška, Pavel (advisor)
This thesis deals with the determination of the position of the solenoid core in real time based on the measured current. The reference position of the current is used for feedback control of the solenoid. For this issue, software tool Matlab/Simulink was used. For current and temperature measurements, PCB circuits were created. The whole project was carried out on the dSPACE platform.
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Design of unit for Power HIL simulation of DC motor
Chalupa, Jan ; Maršík, Jiří (referee) ; Grepl, Robert (advisor)
This thesis deals with analysis and implementation of Power-HIL system that is designed to simulate real DC motor with comutator and permanent magnets. For problem analysis were used simulations of real components in Matlab / Simulink. The electronic parts of system were simulated with using the SimElectronic library. Idividual hardware components were designed according to simulation results. The outcome of this thesis is a power electronic simulator of real DC motor, which is implemented on dSPACE platform. The system allows software to setup parameters and behavior of simulated motor. The final system can be used for testing DC motor ECU (electronic control units).
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Sensorless control of BLDC motor
Križan, Jakub ; Toman, Jiří (referee) ; Grepl, Robert (advisor)
This thesis is focused on problematics of control of brushless DC motor in the sensor and also in the sensorless mode. Also it interprets possibilities of BLDC motor control with one faulty sensor and derivation and simulation of mathematical model. First part mentions options of rotor position sensing as well as existing methods of sensorless BLDC motor control. Second part describes control algorithms of sensor and sensorless motor control realised on device dSPACE and also realisation of faulty sensor control algorithm. Third part deals with derivation of mathematical model, its realisation using Matlab Simulink software and identification of its parameters. Last part concludes results and compares control methods used on the real system.
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Visualization of 4WS and 4WD vehicle movement
Blechta, Martin ; Vejlupek, Josef (referee) ; Lamberský, Vojtěch (advisor)
The aim of the thesis is to develop a graphical interface for visualization of 4WS and 4WD vehicle movement defined by its mathematical model. The visualization allows testing of various dynamic and kinematic models. The visualization is controlled either with joystick or a program input. An algorithm for rear wheels steering in dependence on speed is created and validated with a computational simulation and an experiment. The mathematical model defining the vehicle movement is connected with the dSPACE system enabling real time control. The thesis evaluates advantages and disadvantages of using the MLIB library for communication between dSPACE system and MATLAB.
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HIL testing of student formula battery management system
Přikryl, Matouš ; Brablc, Martin (referee) ; Adámek, Roman (advisor)
The thesis covers the topic of hardware-in-loop testing of the battery management system of student formula. The beginning of the thesis contains a literature review on the topic of battery management systems testing with an emphasis on the hardware and software that can be used for this purpose. In the second part of the thesis, the layout of the BMS connection to the test rig and its subsequent testing is described. Custom models of the formula parts and code written specifically for this thesis were used for the testing of the BMS. The final part contains test analysis and validation of the models of the simulated parts.
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The Integration of ETDs into the University Repository of the TUL
Vencláková, Jitka ; Trykarová, Markéta
The paper maps the entire process of building and commissioning the digital repository of the Technical University of Liberec. It also briefly discusses the preparation phase, and primary options for storing and accessing theses and publications. The whole process of assembling the repository has been seen from a direct participant’s point of view. This contribution is a summary of practical experience and examples of good practice, and moreover, points out the demonstration of failed processes. In addition, the contribution includes a description of the current state of active repository processes and a brief proposal for its further development and improvement
Fulltext: Venclakova_Trykarova_fulltext -  PDF
Slides: Venclakova_Trykarova_prezentace_CZ - PDF; Venclakova_Trykarova_prezentace_EN - PDF
Video: Venclakova_Trykarova_video -  MP4
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Digital repository(ies) of the Charles University - Where are we now and where are we heading?
Řihák, Jakub
This paper describes recent activities of the Central Library of Charles University (based in Prague, Czech Republic) in regards to providing access to digitized and digital-born content, in particular theses and habilitation theses as well as additional varieties of electronic content. The paper also describes the process behind the creation of the digital repository of Charles University, current tasks and plans for the future development of this service. We attempt to answer two “simple” questions: “Where are we now?” and “Where do we want to be in the future?”
Fulltext: Fulltext_Rihak_EN - PDF
Slides: prezentace_Rihak_CZ - PDF; prezentace_Rihak_EN - PDF
Video: NUSL2017-Rihak - MP4
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