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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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Modelling of servo-fluid bearings
Houfek, Lubomír
In the paper is presented analysis of inflow and outflow in hydraulic coupling elements in rotor systems. The models of squeeze film damper and hydraulic bearing are developed now. For solutions is used control volume method. There are presented two models of boundary conditions - in segment and in volume. Three locations of eccentricity are solved - centered shaft position, 50
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