The goal of this diploma work is to design a control for permanent magnet synchronous motor in sliding mode. The introduction describes a synchronous motor, sensors which are used in the control process as well as power devices. Further, there is description of mathematical model for the synchronous motor. Another part of the diploma work deals with classic vector control for this kind of motor followed by the sliding mode control for the motor. At the end, there is presented an algorithm which has been implemented in the processor designed for this equipment. All the controllers used in the equipment have been tested on motor simulations. In conclusion, there is a target analysis and facts finding.

The submitted Master’s thesis deals with the general principle of the electric drives’ functioning and with the construction of a synchronous electric motor. A comparison of a linear drive and a rotary drive with rack and pinion system is provided, as well as an overview of common type linear drives. A mathematical model of a rotary synchronous motor, the Clark’s and Park’s transformation and the principle of vector control is explained. A method of the linear parameters’ conversion to the rotary equivalents is demonstrated. A block diagram to motor control is designed. The control quality is tested by various criteria. Lastly, there is a simulation provided on how the changes of motor’s parameters affect the control quality.

This paper is focused on customization of induction machine type STM71-4L. The need of optimal mechanical design is presented, to achieve sufficient synchronizing reluctant torque, which will result in rotor synchronization with stator magnetic field. Final mechanical design is suggested after research, which considers influence of the essential rotor dimensions on resulting electromechanical torque. This is provided with usage of finite element method calculation. As a result of the thesis the combination of two basic machines – induction machine and synchronous motor is presented. The measurement on induction motor, and it´s modified versions is presented in following chapters. In the last chapter the results of optimization and measurement are discussed and compared.

This work deals with a creation of model of synchronous generator in programmes such as Simplorer and Maxwell, and also its operation in an insular operation. In the paper are described Maxwells equations for solving electromagnetic field, theory of synchronous machine, further are briefly described a simulation programmes which were used. In the next part of work is described production of geometric model of generator and its later electromagnetic analysis in the Maxwell programmes environment. For a simulation of generators operation in insular operation were chosen 2 cases. The first case simulates an operation of generator at the step change of residence of R-L load, the second simulation an automatic regulation of voltage at the step change of residence of R-L load. The simulations were running in the Simplorer programme and at link simulation Maxwell Simplorer programmes.

This work deals with the predictive control algorithms of the AC drives. The introductory section contains summary of current state of theory and further description and classification of most significant predictive algorithms. A separate chapter is dedicated to linear model predictive control (linear MPC). The main contribution of this work is the introduction of two new predictive control algorithm for PMSM motor, both of which are based on linear MPC. The first of these algorithms has been created with the aim of minimizing its computational demands, while the second algorithm introduces the ability of field weakening. Both new algorithms and linear MPC were simulated in MATLAB-Simulink.

This thesis deals with computing and experimental problems of direct water cooling of stator winding that is assigned in synchronous motors. A model with similar material characteristic to a real motor has been made for experiments. The computing results showed us the appropriate place for the cooling system. This place has been chosen due to maximum efficiency and cost of the cooling system. The experiments on the model showed us, if the computing results are credible.

This Master´s thesis deals with the analysis of modal characteristics of the vertical synchronous generator. The goal of this work is to determine influence of individual parts of the generator on modal characteristics. Another part of this thesis contains analysis of different variants for storaging the generator and also structural modifications, which lead to the improvement of the modal properties. For modelation was used cumputional modeling in ANSYS.

The main focus of my master thesis is the assessment of effects of the bearing shields stiffness and balance quality on synchronous generator vibration. The incentive of writing the thesis is the problematic situation, which is characterized by synchronous generator vibration. The aim of my thesis is to variate shields stiffness and to find out the dependence of vibration on stiffness during nominal speed. I have used the program ANSYS based on finite element method to solve this problem.

Le web est une plate-forme universelle pour développer des applications riches en interactions avec les utilisateurs et des services distants. Ces interactions sont implémentées sous forme d’évènements asynchrones pouvant survenir à n’importe quel instant de l’exécution de l’application. JavaScript, le langage du web, gère les évènements asynchrones de façon peu abstraite, ce qui rend l’écriture, la vérification et la maintenance d’applications interactives difficile. La contribution de cette thèse est l’élaboration et l’implémentation du langage Hiphop.js qui dote JavaScript d’abstractions de plus haut niveau pour gérer les évènements asynchrones. Hiphop.js est une implémentation JavaScript de constructions temporelles du langage réactif synchrone Esterel. Grâce à ces constructions, le flot de contrôle d’une application Hiphop.js est explicite. Il est donc possible de savoir précisément quand et sous quelles conditions un évènement est traité par simple lecture du code source de l’application. Ceci facilite la vérification et la maintenance de l’application. L’intégration profonde du langage Hiphop.js avec l’environnement dynamique du web est une part importante des travaux entrepris dans cette thèse. Les programmes sont construits et compilés pendant l’exécution de l’application JavaScript ce qui permet d’adapter automatiquement le traitement des évènements asynchrones en fonction des changements de l’environnement au cours de l’exécution (par exemple, la connexion ou déconnexion de participants pendant une visioconférence). / The web is an universal platform used to develop applications interacting with users and remote services. These interactions are implemented as asynchronous events that can be fired anytime. JavaScript, the mainstream language of the web, handles asynchronous events using low-level abstractions that makes it difficult to write, verify, and maintain interactive applications. We have addressed this problem by designing and implementing a new domain specific language called Hiphop.js. It offers an alternative to JavaScript event handling mechanism by reusing temporal constructions coming from the synchronous programming language Esterel. These constructions make the control flow of the program explicit and deterministic. Hiphop.js is embedded in JavaScript and suits the traditional dynamic programming style of the Web. It is tighly coupled to JavaScript with which it can exchange values and access any data structures. It can also support dynamic modifications of existing programs needed to support on-demand download on the Web. It can run on both end of Web applications, namely on servers and on clients. In this thesis, we present Hiphop.js, its design and implementation. We overview its programming environment and we present the prototypical web applications we have implemented to validate the approach.

Originating in the theory of distributed computing, the optimistic consistency control method known as Operational Transformation (OT) has been studied by researchers since the late 1980s. Algorithms were devised for managing the concurrent nature of user actions and for maintaining the consistency of replicated data as changes are introduced by multiple geographically-distributed users in real-time. Web-Based Collaborative Platforms are now essential components of modern organizations, with real-time protocols and standards such as WebSocket enabling the development of online collaboration tools to facilitate information sharing, content creation, document management, audio and video streaming, and communication among team members. Products such as Google Docs have shown that centralized web-based co-editing is now possible in a reliable way, with benefits in user productivity and efficiency. However, as the demand for effective real-time collaboration between team members continues to increase, web applications require new synchronization algorithms and architectures to resolve the editing conflicts that may appear when multiple individuals are modifying the same data at the same time. In addition, collaborative applications need to be supported by scalable distributed backend services, as can be achieved with "serverless" technologies. While much existing research has addressed problems of optimistic consistency maintenance, previous approaches have not focused on capturing the dynamic client-server interactions of OT systems by modeling them as real-time systems using Finite State Machine (FSM) theory. This thesis includes an exploration of how the principles of control theory and hierarchical FSMs can be applied to model the distributed system behavior when processing and transforming HTML DOM changes initiated by multiple concurrent users. The FSM-based OT implementation is simulated, including with random inputs, and the approach is shown to be invaluable for organizing the algorithms required for synchronizing complex data structures. The real-time feedback control mechanism is used to develop a Web-Based Collaborative Platform based on a new OT integration algorithm and architecture that brings "Virtual DOM" concepts together with state-of-the-art OT principles to enable the next generation of collaborative web-based experiences, as shown with implementations of a rich-text editor and a 3D virtual environment.