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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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Hybrid Energy Harvesting Device
Rasocha, David ; Rubeš, Ondřej (referee) ; Hadaš, Zdeněk (advisor)
This bachelor theasis is focuses on the design of a hybrid piezoelectric vibratory genera-tor. The main idea is to place a permanent magnet on the end of the piezoelectric beam and to place the coil appropriately in order to make a electromagnetic generator. The coil will generate a electrical voltage on load, when the magnetic field is passing throught coil. The piezoelectric beam will also generate voltage, depending on its deformation. For modeling, Femm, Matlab and Simulink will be used.
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Dynamic analysis of oscillations with multiple degrees of freedom
Schulmeister, Jiří ; Houfek, Lubomír (referee) ; Březina, Lukáš (advisor)
This thesis is dealing with analysis of oscillating with multiple degrees of freedom and with example of dynamic behavior of system with two degrees of freedom with different input signals for purposes of dynamic lessons. Conventional method of making equations of motion by Lagrange’s method and their consecutive analysis is inscribed in the work. As example of system with two degrees of freedom is chosen quarter car model. Responses to different input signals are shown for the model. It is made in MATLAB/SIMULINK.
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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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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 linear external excitation drive with oscillative motion
Gärtner, Jan ; Kalous, Jaroslav (referee) ; Singule, Vladislav (advisor)
This thesis deals with design of linear external excitation drive with oscillative motion. In the first part of the work is shown describe types of linear motors. Further is a part of analysis of concrete linear drives from patents database. In the next part of this work is straight design of linear external excitation drive with oscillative motion. The conception in-clude geometric model created with software Solidworks, calculation of forces with software Ansys and dynamic models of mechanical and electrical part of drive with software Mat-lab/Simulink. And is a mentions possibility of controls of this drive too.
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Development of controller unit for robotic vehicle Car4
Šůstek, Jan ; Adámek, Roman (referee) ; Dobossy, Barnabás (advisor)
This bachelor thesis deals with creation of new control unit for experimental vehicle CAR4. In the first part there are described basic communication protocols and checksum algorithms. In the second part of the work, the electronic diagram of the new control unit and the printed circuit board are designed and control algorithm is optimized. Also there is established communication between control unit and computer and creation of DC motor speed regulation.
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