Measurement of the asynchronous motor

Práca pojednáva o spôsoboch merania jednotlivých druhov charakteristík asynchrónnych motorov a je rozdelená na tri hlavné kapitoly. Prvá kapitola nás zbežne oboznamuje s históriou asynchrónnych motorov a smerovaním práce. Druhá kapitola sa dôklane venuje možnostiam typových skúšiek tohto druhu pohonu. V tretej kapitole sú uvedené výsledky uskutočnených meraní na dvoch motoroch ďalej označovaných ako typ AOM090L02-016 (ktorý je vybavený jednovrstvým vinutím) a typ AOM090L02-017 (ktorý je vybavený dvojvrstvým vinutím). Nakoniec je uvedené spracovanie merania momentovej charakteristiky z rozbehovej charakteristiky za pomoci PC a zotrvačníka.The work deals with the methods of measurement of various types and characteristics of induction engines is divided into three main chapters. The first chapter introduces us to the history superficially induction engines and the direction of work. The second chapter is devoted to different types of tests on this induction engines. The third chapter lists the results of measurements on two engines also known as type AOM090L02-016 (which is equipped with single layer winding) and type AOM090L02-017 (which is equipped with a double layer winding). In the end this work describing measurement of torque characteristics from run-up characteristic by using PC and freewheel.

Modularity of Production Systems

From the theoretical point of view, the chapter focuses on the unification of views on the living (constantly changing) structure of the construction of flexible production systems, including its cooperating devices. It contains currently defined and designated technical terms in the field of flexible production systems. From the theoretical point of view, the existing structures of the “multiprofessional manufacturing robotic center” are enhanced with new elements, which also contributes to innovation and expansion of their applications. These structural structures served as the basis for building sophisticated modular structures. Modularity is an integrating element directed at highly customizable manufacturing engineering structures. It fully complies with the requirements of manufacturing practice and demanding market, in the framework of fully implemented Industry 4.0 (I4.0) under way

Dynamic model of synchronous machine with magnetic equivalent circuit

Práca popisuje tvorbu dynamického modelu synchrónneho generátora, s použitím náhradného magnetického ekvivalentného obvodu. Konštrukcia modelu vychádza zo znalosti geometrických rozmerov, magnetizačnej charakteristiky použitých materiálov a fyzického rozloženia vinutia jednotlivých fáz v drážkach. Výsledky výpočtov sú vztiahnuté na model generátora, vytvoreného metódou konečných prvkov.The thesis focuses on constructing dynamic model - synchronous generator with using magnetic equivalent circuit diagrams. The model construction is based on knowledge of geometric parameters, magnetic characteristic of used material and fyzical deployment of vindings placed in stator slots. Computed reults are compared with results optained from model created with finite element method.

Matematičko modeliranje strojne obrade pomoću raščlanjivanja na module

The machining is the most common way of final processing of the metallurgical semi-finished products. The article deals with mathematical modeling of virtual machining. A specific lathe with specific parameters was selected as the machining tool. Lathe, respectively its computational model was decomposed into modules that represent a natural group of module design where each module is sliding towards other, rotating or standing with a given dimension characteristics. Computational model of the machine tool should be as simple as possible, but must be designed so that features all the factors affecting the accuracy of the working face. Generally, mathematical model of inaccuracies of machining is possible to use for analytical detection of inaccuracies in machining parts for a particular model machine tools.Strojna obrada najuobičajeniji je način konačne obrade metalurških poluproizvoda. Članak se bavi matematičkim modeliranjem virtualne strojne obrade. Posebna tokarilica sa specifičnim parametrima odabrana je kao alat za strojnu obradu. Tokarilica, odnosno njen računski model, bila je raščlanjena na module koji predstavljaju neku prirodnu skupinu modularne izvedbe gdje svaki modul klizi prema drugome, rotirajući ili stojeći uz dane dimenzijske karakteristike. Računski model tog strojnog alata trebao bi biti što jednostavniji, no mora biti izrađen tako da prikazuje sve faktore što utječu na preciznost radne površine. Općenito, matematički model nepreciznosti u strojnoj obradi moguće je koristiti za analitičku detekciju nepreciznosti u dijelovima strojne obrade za određeni model strojnih alata

Personal data protection and cookies

Táto bakalárska práca sa zaoberá analýzou technológie cookies, špecifickej oblasti ochrany osobných údajov. Jej podstatu skúma predovšetkým z právneho hľadiska a prostredníctvom nedostatkov, ktoré príslušné normy vykazujú. Popritom taktiež poskytuje rozbor konkrétnych príkladov narúšania súkromia práve prostredníc­tvom súborov cookie a vplyvu značnej nevedomosti používateľov.This thesis deals with an analysis of cookies, a specific field of personal data protection. In particular, the thesis examines the legal aspects of the technology, as well as their insufficiencies. Besides that, it provides an analysis of several examples of privacy violations caused by cookies.

Optimal replacement time estimation for machines and equipment based on cost function

The article deals with a multidisciplinary issue of estimating the optimal replacement time for the machines. Considered categories of machines, for which the optimization method is usable, are of the metallurgical and engineering production. Different models of cost function are considered (both with one and two variables). Parameters of the models were calculated through the least squares method. Models testing show that all are good enough, so for estimation of optimal replacement time is sufficient to use simpler models. In addition to the testing of models we developed the method (tested on selected simple model) which enable us in actual real time (with limited data set) to indicate the optimal replacement time. The indicated time moment is close enough to the optimal replacement time t*

Dynamic of taking out molding parts at injection molding

Most plastic parts used in automobile production are manufactured by injection molding. Their quality depends also on taking out molding and on the manipulators for it. Task of this contribution is to theoretically describe a transport of molding at taking out after injection molding in relation on its regulation. The following quantities are derived at it: the transition characteristic of the taking out system, the blocking diagram of taking out molding regulation, the amplitude and phase characteristic and the transition characteristic of action quantity at taking out molding regulation

Dinamička izradba odljevaka tlačnim ljevanjem

Most plastic parts used in automobile production are manufactured by injection molding. Their quality depends also on taking out molding and on the manipulators for it. Task of this contribution is to theoretically describe a transport of molding at taking out after injection molding in relation on its regulation. The following quantities are derived at it: the transition characteristic of the taking out system, the blocking diagram of taking out molding regulation, the amplitude and phase characteristic and the transition characteristic of action quantity at taking out molding regulation.Cilj ovog rada je teorijski opis transporta odljevaka od plastike poslije tlačnog ljevanja relacijom i njihovom regulacijom. Sljedeće vrijednosti su izvedene: tranzicijski karakter ustrojnog sustava, blok dijagrama izradbe regulacije odljevka, amplituda i fazna karakteristika i tranzicijska karakteristika i kvantiteta udeđaja kod ustroja ljevačke regulacije

Matematičko modeliranje strojne obrade pomoću raščlanjivanja na module

The machining is the most common way of final processing of the metallurgical semi-finished products. The article deals with mathematical modeling of virtual machining. A specific lathe with specific parameters was selected as the machining tool. Lathe, respectively its computational model was decomposed into modules that represent a natural group of module design where each module is sliding towards other, rotating or standing with a given dimension characteristics. Computational model of the machine tool should be as simple as possible, but must be designed so that features all the factors affecting the accuracy of the working face. Generally, mathematical model of inaccuracies of machining is possible to use for analytical detection of inaccuracies in machining parts for a particular model machine tools.Strojna obrada najuobičajeniji je način konačne obrade metalurških poluproizvoda. Članak se bavi matematičkim modeliranjem virtualne strojne obrade. Posebna tokarilica sa specifičnim parametrima odabrana je kao alat za strojnu obradu. Tokarilica, odnosno njen računski model, bila je raščlanjena na module koji predstavljaju neku prirodnu skupinu modularne izvedbe gdje svaki modul klizi prema drugome, rotirajući ili stojeći uz dane dimenzijske karakteristike. Računski model tog strojnog alata trebao bi biti što jednostavniji, no mora biti izrađen tako da prikazuje sve faktore što utječu na preciznost radne površine. Općenito, matematički model nepreciznosti u strojnoj obradi moguće je koristiti za analitičku detekciju nepreciznosti u dijelovima strojne obrade za određeni model strojnih alata

Dinamička izradba odljevaka tlačnim ljevanjem

Most plastic parts used in automobile production are manufactured by injection molding. Their quality depends also on taking out molding and on the manipulators for it. Task of this contribution is to theoretically describe a transport of molding at taking out after injection molding in relation on its regulation. The following quantities are derived at it: the transition characteristic of the taking out system, the blocking diagram of taking out molding regulation, the amplitude and phase characteristic and the transition characteristic of action quantity at taking out molding regulation.Cilj ovog rada je teorijski opis transporta odljevaka od plastike poslije tlačnog ljevanja relacijom i njihovom regulacijom. Sljedeće vrijednosti su izvedene: tranzicijski karakter ustrojnog sustava, blok dijagrama izradbe regulacije odljevka, amplituda i fazna karakteristika i tranzicijska karakteristika i kvantiteta udeđaja kod ustroja ljevačke regulacije