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Design and implementation of education model "Oscilator 1 dof"
Deďo, Michal ; Houfek, Lubomír (referee) ; Grepl, Robert (advisor)
The purpose of bachelor’s thesis is the design, implementation and testing of the educational model oscillator with one degree of freedom ", which should provide students with the possibility of closer assimilation of events generated by the oscillation, as well as to familiarize the student with the control model through Real Time Toolbox and evaluating the results of measurement. Work should provide students with real-time overview of these problems, which, in the future may bring to light the causes, or even prevention of disorders caused by oscillation.
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Simulation model of ABS in passenger car
Svobodová, Jana ; Houfek, Lubomír (referee) ; Grepl, Robert (advisor)
The development of electronics caused revolution the automobile industry. Antilock-Brake-System have become a milestone in the development of electronic security systems. ABS detects susceptibility to locking the wheels, which may occur during braking for critical driving conditions, and then hits. Using of simulation programs is another milestone. Simulation allows repeating of tests and find the best solution of the problem before introduction in practice. Time and development costs are then significantly reduced. In the work is described the most important component of security systems - the braking system and the entire braking process of ABS system. With using a mathematical description of the wheel is in the Matlab-Simulink made quarter model of the vehicle to simulate driving conditions and then created to it a system of ABS. At the end is there an assessment and graphically shown the results of simulations braking.
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Rotation Electric Actuator: parameter estimation and control
Palaj, Lukas ; Houfek, Lubomír (referee) ; Grepl, Robert (advisor)
The bachelor’s thesis deals with design of printed circuit board in the first part. The board will be used for connecting rotation electric actuator (REA) to the card MF624. It is written about electronic throttle and it’s particular parts, it’s connection to the card and estimation of parameters necessary for composing a virtual model in Simulink in the second part. After that control for the model is designed.
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Design, production and testing of education model "Watt's regulator"
Janoš, Petr ; Houfek, Lubomír (referee) ; Grepl, Robert (advisor)
In the thesis I deal with design, production and testing of laboratory education model "Watt‘s regulator". This work considers different solutions of construction and especially the role of sensors. I assess positives and negatives of each solution. In addition, I describe design and implementation of electronics and wiring for the communication with a PC via control card Humusoft MF624. Using the MATLAB-Simulink and its extensions Real Time Toolbox 4.0 I make the proposal of PID regulator based on Ziegler – Nichols method.
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Mechatronic drive systems
Pulec, Václav ; Houfek, Lubomír (referee) ; Kratochvíl, Ctirad (advisor)
The purpose of this bachelor's thesis is to describe terms like mechatronics, mechatronics approach and mechatronics product. The thesis systematically compares mechatronic and conventional drive systems and defines their specific differences. It introduces several innovation examples which were created thanks to mechatronics.
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PROBLEM OF IDENTIFICATION OF DETERMINISTIC CHAOS IN THE INTERACTIVE DRIVE SYSTEMS
Kratochvíl, Ctirad ; Švéda, P. ; Houfek, Martin ; Houfek, Lubomír
Chaos and chaos theory is a field of study in mathematics, computer sciences, electronics, physics and also engineering too. In our article will be explored chaotic behaviour and numerical solutions of the models of drive systems with electric DC motors. These solutions are also bounded like equilibrium, periodic and quasiperiodic solution. There is no precise definition for a chaotic solution because it cannot be represented through standard mathematical functions. However, a chaotic solution is aperiodic solution, which is endowed with some special identifiable characteristics, for example attractors, bifurcations or one-and two dimensional maps.
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Experimental research chaos and his visualization
Kratochvíl, Ctirad ; Koláčný, J. ; Houfek, Lubomír ; Houfek, Martin ; Švéda, P.
Theory chaos like of science discipline unreel approximately from halves sixtieth years last century. Most washing is but till this time devoted theoretic aspects hereof prodigy and their investigation pursues as a rule on modelling systems with small number degree of freedom - concerning technical application. In his benefit put to record simulator studies chaotic phenomenon, which were gained with utilization, chaos modulus on mock - ups nonlinear dynamic systems. K visualization achieved results then use memory oscilloscope.
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Komplexní problémy řešení pohonových soustav
Kratochvíl, Ctirad ; Heriban, P. ; Houfek, Lubomír ; Houfek, Martin
Today the drive system is considered mainly as interactive system containing a range of subsystems with different physical nature: mechanical – the basic ones, electrical and hydraulic,pneumatic and also electronic – control ones. Models of those complex systems can then be characterized as so called purpose build and partially structured. The models of those partial subsystems have their typical signs and properties, which can often essentially influence the dynamic properties and global system models behaviour. The aim is to keep so called functional model purpose – in comparison with the real system, which does not necessarily mean that the model must contain all the function and signs. By contrast we suppose that those functions have their carrier, which in limit case can be represented by black box. The control of such systems then more and more often require use of intelligent control algorithms, based for example on genetic algorithms and artificial neural networks.
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