Linear induction motors are applied in equipments with different requirements set up to the controlled motion parameters. Investigation of motoring and breaking modes remains the relevant problem nowadays. The scientific novelty is based on analysis of non-symmetrical operation modes of linear induction motor at supplying it by a voltage source, developing a generalized model of motoring and breaking dynamic modes and analyzing influence of linear motor windings connection way and control parameters on dynamic breaking characteristics. The coordinate transformations of linear induction motors dynamic models, based on rotational motor with assumptions valid for low speed motor and multi-pole motor, are considered. Mathematical and computer models to investigate symmetrical dynamic modes of linear induction drives are presented. Generalized model to investigate non-symmetrical dynamics modes is elaborated. The results of simulation are presented by dependences on the main variables in the time domain, and dependences on both constructional and control parameters that give possibility to optimize constructional parameters of motors.

Linear induction motors are applied in equipments with different requirements set up to the controlled motion parameters. Investigation of motoring and breaking modes remains the relevant problem nowadays. The scientific novelty is based on analysis of non-symmetrical operation modes of linear induction motor at supplying it by a voltage source, developing a generalized model of motoring and breaking dynamic modes and analyzing influence of linear motor windings connection way and control parameters on dynamic breaking characteristics. The coordinate transformations of linear induction motors dynamic models, based on rotational motor with assumptions valid for low speed motor and multi-pole motor, are considered. Mathematical and computer models to investigate symmetrical dynamic modes of linear induction drives are presented. Generalized model to investigate non-symmetrical dynamics modes is elaborated. The results of simulation are presented by dependences on the main variables in the time domain, and dependences on both constructional and control parameters that give possibility to optimize constructional parameters of motors.

This thesis deals with design of linear internal excitation drive with oscillative motion. Here is shown the survey area of linear drives, as well as the field of patents which are involved in this issue. This work is proposed specific conception of linear internal excitation drive with oscillative motion which is verified by simulation of dynamic behavior and for which is also proposed a control. Design of linear internal excitation drive with oscillative motion, that meet the specified input parameters is a goal of this thesis.

Hydrostatische Zylinderantriebe mit drehzahlvariablem Pumpenantrieb stellen modulare translatorische Antriebssysteme dar, die die Vorteile der elektrome-chanischen und hydraulischen Domänen verbinden. Zusätzlich bieten diese sog. elektrohydrostatischen Kompaktantriebe den Vorteil einer einfach umsetzbaren, diskret variablen Übersetzung. Diese erlaubt es, bei Arbeitsspielen mit dedizierten Eil- und Kraftphasen den elektrischen Antriebsmotor kleiner auszulegen als bei einer Referenz mit fester Übersetzung. Dadurch kann Downsizing-Potential in Bezug auf Größe und Masse des elektrischen Antriebsmotors und der Leistungselektronik erschlossen werden. In der vorliegenden Arbeit werden zunächst die möglichen Ersparnisse durch diese Technologie beleuchtet und die prinzipiellen Möglichkeiten einer schaltbaren Übersetzung dargestellt. Es wird eine Methodik erarbeitet, die es erlaubt, den gesamten Lösungsraum diskret umschaltbarer elektrohydrostatischer Kompaktantriebe systematisch zu erfassen und zu bewerten. Schließlich werden anhand von zwei Demonstratoren die Grenzen und Potentiale der Technologie experimentell untersucht und unterschiedliche, im Rahmen der Arbeit erarbeitete Strategien für den Umschaltvorgang zwischen zwei Übersetzungsstufen validiert. / Hydrostatic cylinder drives with variable speed pumps pose a modern form of modular translational drive systems, which merge the benefits of both electro-mechanic and hydraulic domains. Beyond that, these so called electrohydrostatic compact drives feature a possibility of implementing a discrete variable trans-ission ratio in a cost-effective manner. In the case of work cycles with dedicated rapid and force strokes, this allows the electric drive motor to be designed smaller than in the case of a reference with a fixed transmission ratio. In this way, downsizing potential can be exploited in terms of the size and mass of the electric drive motor and power electronics. In this thesis, the possible gains through this technology are first examined and the fundamental possibilities of a variable transmission are presented. A methodology is developed that allows the entire solution space of discretely switchable electrohydrostatic compact drives to be systematically mapped and evaluated. Finally, the limits and potentials of the technology are investigated experimentally by means of two demonstrators, and different strategies for the switching process between two transmission stages developed in the course of the thesis are validated.

This Master’s thesis deals with the evaluation of quality pneumatic linear drives. The theoretical part describes the problems in the field of pneumatic cylinders and statistical methods to perform the analysis. The practical part includes the execution and evaluation of the statistical analysis of the measurement process and pneumatic cylinders, also brings recommendations to optimize the measurement process. The methods used included analysis Gage R & R, Analysis control charts and data analysis using the process capability. The study was made for the purpose of improving test equipment Norgren Ltd. Used computer programs was Minitab Statistical Software and MS Excel.