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Synchronized Control of Four or More Stepper Motors for Computer Numerical Controled Machines and 3D Printers
No full textA simple and effective algorithm for synchronized control of four or more stepper motors for computer numerical control machines is presented. Advantages and disadvantages of stepper and servo motors for CNC machines are discussed. Various control topologies for stepper motors are analyzed. Different types of stepper motor drivers and their characteristics are explained. The main emphasis is on the algorithm for synchronous control of multiple motors. The mathematical background for moving functions is explained in context of an overall 3D printing process. A practical implementation of the algorithm is evaluated. Possible directions for further research in this area are pointed
Computer-aided Control of Sensorimotor Skills Development in Operators of Manufacturing Installations
No full textIn this paper we introduce a novel model and method to increase the effectiveness of training operators of manufacturing installations. The proposed mathematical model describes main aspects of the process of training and development of sensorimotor skills. In contrast to existing models, our mathematical model incorporates dynamic characteristics of the skill development process and exponential learning curves which are used in assessing the performance of motor actions and development of control actions. We implemented the model and method as a component of our AnyCrane training simulator for crane operators. AnyCrane training simulator is a framework for realistic simulation of environment in ports, cranes, personal, physics and different technological processes. Our case study demonstrated effectiveness of the approach presented in this paper. The time necessary for moving a cargo decreased by 19%, the precision of load-unload operations increased by 30%, and the smoothness of crane turning has been increased by 36%
Multi-compartment vehicle routing problems in the context of glass waste collection
No full textOtto-von-Guericke-Universität Magdeburg, Fakultät für Wirtschaftswissenschaft, Dissertation, 2018Tino HenkeLiteraturangabe
Leitmedium Fernsehen : Wie Nachrichtensendungen die Wirklichkeit von Kindern und Jugendlichen konstruieren
No full textFour essays on financial stability and the housing market
No full textOtto-von-Guericke-Universität Magdeburg, Fakultät für Wirtschaftswissenschaft, Dissertation, 2018Verfasser: Thomas Krause, M. Sc.Literaturverzeichnis: Seite 183-19
Korrelation prä- und postnataler Ultraschallbefunde in einem DEGUM-II-Zentrum im Zeitraum 2005 bis 2010
No full textUniversität Magdeburg, Dissertation, 2018vorgelegt von Larisa Neumann aus Sastawna (Ukraine
Die Bedeutung von Medienpädagogik aus Kindersicht : Beispielhafte Analyse der Ansprüche von am medienblau-Projekt Webklicker teilnehmenden Kindern der Klassenstufe 5 in den Landkreisen Kassel und Groß-Gerau im Verhältnis zum medienpädagogischen Angebot im schulischen Kontext
No full textRecovery planning method for production systems
No full textOtto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau, Dissertation, 2018von Dipl.-Ing. Nicole SchmidtLiteraturverzeichnis: Seite 137-15
Tailored indirect algorithms for efficient on-line optimization of batch and semi-batch processes
No full textOtto-von-Guericke-Universität Magdeburg, Fakultät für Verfahrens- und Systemtechnik, Dissertation, 2018von M. Sc. Erdal AydinLiteraturverzeichnis: Seite 107-11