National Repository of Grey Literature 76 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Compensation of Nonlinearities in AC Motor Control Algorithms
Buchta, Luděk ; Kuchař,, Martin (referee) ; Glasberger,, Tomáš (referee) ; Blaha, Petr (advisor)
Analysis of the dead-time effect and other nonlinearities of the voltage source inverter was carried out in the introduction of the doctoral thesis. Three compensation strategies for vector controlled PMSM were proposed based on the analysis. The voltage disturbance observer with cost function of current errors is based on the model of PMSM, known machine parameters and easily measurable quantities. The second observer which estimates the dq- axes currents and the value of the voltage error with one parameter only is designed based on the harmonic analysis and Kalman filter algorithm. The third method combines an adaptive approach with feedback and voltage disturbance observer that is based on the PMSM model. Furthermore, the two compensation methods for vector controlled induction motor were proposed. In the first case, the standard compensation strategy is extended by a harmonic compensator that suppresses the residual 6th harmonic component in dq- axes currents. The last strategy detects the polarity of the estimated phase currents that are obtained by the Kalman filter. All compensation strategies have been verified by MATLAB/Simulink simulations and by experiments on real drives.
Design of the endpoint trajectory of the robotic arm using the virtual point method
Bubeník, Ľubomír ; Blaha, Petr (referee) ; Pivoňka, Petr (advisor)
The diploma thesis deals with a new approach to create a robotic arm trajectory. The first part descibes existing methods of trajectory planning. The second part shows virtual point method, implementation of the trajectory planning into the web environment and trajectory generation. Third part descibes the virtual robot model and designed comunnication protocols. The fourth part shows grafical user interface and his posibilities. The last part presents implemention of web aplication into industrial visualization.
NMPC Application for PMSM Drive Control
Kozubík, Michal ; Blaha, Petr (referee) ; Václavek, Pavel (advisor)
This thesis focuses on the possibilities of application of nonlinear model predictive control for electric drives. Specifically, for drives with a permanent magnet synchronous motor. The thesis briefly describes the properties of this type of drive and presents its mathematical model. After that, a nonlinear model of predictive control and methods of nonlinear optimization, which form the basis for the controller output calculation, are described. As it is used in the proposed algorithm, the Active set method is described in more detail. The thesis also includes simulation experiments focusing on the choice of the objective function on the ability to control the drive. The same effect is examined for the different choices of the length of the prediction horizon. The end of the thesis is dedicated to the comparison between the proposed algorithm and commonly used field oriented control. The computational demands of the proposed algorithm are also measured and compared to the used sampling time.
Permanent magnet synchronous motor control with respect to simplicity of the realization
Vybíral, Ondřej ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
This thesis deals with the problem of control of permanent magnet synchronous motor. The introduction describes division of motors according to the structure and with the stress on the BLDC motor. Control methods are also discussed there including clarification of concepts related to the control itself. The advantages and disadvantages of individual methods are compared. Six-step commutation was chosen based on the simple implementation criterion. The work includes Simulink simulation, simulating the BLDC motor LINIX 45ZWN24-40 controlled by six-step commutation. The thesis contains a comparison of simulated motor speeds at various control parameters. The conclusion of the thesis deals with the possibilities for subsequent implementation.
Novel Methods of Control Systems Design with MATLAB/Simulink
Válek, Vít ; Kozovský, Matúš (referee) ; Blaha, Petr (advisor)
The content of this thesis is to introduce the tools of MATLAB/Simulink, which allow to generate the source code in C language. It will be demonstrated how to combine the source code written in C with Simulink model and MATLAB code. The code will be generated for the selected functions and compared with RTCESL library functions. In the last part of this thesis the principle of FOC will be briefly described. For a simplified loop of FOC, the code will be generated and then compared with handwritten code. For comparison, the microcontroller KV46F256 from NXP Semiconductors is used.
HIL model of electromechanical system
Malík, Lukáš ; Bartík, Ondřej (referee) ; Blaha, Petr (advisor)
This diploma thesis deals with creation of elektromechanical model in Modelica language which is subsequently imported into LabVIEW environment. The Modelica language, LabVIEW graphical programming tool and Functional Mock-up Interface 2.0 standard are described in the introduction of this thesis. Functional Mock-up Interface is a tool independent standard witch, defines a standardized interface to ModelExchange and Co-simulation of complex system components. The model of electromechanical system was created based on Functional Mock-up Interface standard. Part of the work focuses on the Functional Mock-up Unit storage possibilities and LabVIEW support to import models of this type. The imported model was simulated and tested in this environment. Finally, the instance of Functional Mock-up Unit was connected with LabVIEW FPGA target for the purpose of model HIL simulation on CompactRIO platform.
BLDC motor control using LabView FPGA
Ruhás, Sándor ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
This thesis focuses on BLDC motor control algorithms with model based design approach. Models and control algorithms were programmed in LabView, the NI MyRIO was used as a hardware platform. For hall-sensor feedback controlled application an already finished power inverter was used from a Honeywell rotary actuator. For sensor-less motor control an indirect sensing of BEMF signal is applied using motor phase current measurement. The time-critical parts of the algorithms are programmed for FPGA, the non-time-critical parts are programmed for LabView Real-Time module.
Control of two dc motors on common shaft
Orávik, Tomáš ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
Thesis deals with control of two DC motors on commom shaft using programing software LabVIEW, communicating with model CompactRio 9076 and I/O module NI 9505, methods for identifying paramaters, methods motion controllers.
Risks in Marketing Communication Management
Havlínová, Sabina ; Blaha, Petr (referee) ; Novák, Petr (advisor)
The subject of the master’s thesis „ Risk in the area managemarketing communication“ is analysis of the current status Obchodni Galerie Orli in Brno and suggestions for improving the communication mix and possible risks that may occur. The thesis is divided into three chapters, where are presented the theoretical bases for the given issue, futher analysis of the current state and the last chapter of the thesis contains proposals for a new communication mix.
Analysis of Protests against Internet Regulation (2011-2012)
Košík, Jan ; Navrátil, Jiří (advisor) ; Bláha, Petr (referee)
The goal of the thesis was to describe protests against ACTA (Anti-Counterfeiting Trade Agreement) that took place in Czech Republic in the first half of year 2012. The research consists in analysis of individual protests. While writing this thesis I've focused on describing the role of civil sector organizations, what frames their organizers used and also what was the role of new medias in organizing and dispersing these protests.

National Repository of Grey Literature : 76 records found   1 - 10nextend  jump to record:
See also: similar author names
2 Bláha, P.
1 Bláha, Patrik
13 Bláha, Pavel
6 Bláha, Petr
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