Add this article to private library Remove from private library Submit corrections to this record View record in the new ADS The book presents an introductory treatment of digital and analog communication systems with emphasis on digital systems. Attention is given to the following topics: systems and signal analysis, random signal theory, information and channel capacity, baseband data transmission, analog signal transmission, noise in analog communication systems, digital carrier modulation schemes, error control coding, and the digital transmission of analog signals. Bibtex entry for this abstract Preferred format for this abstract

Digital and analog communication systems

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Non-Linear Electromechanical System Dynamics

iii ACKNOWLEDGEMENTS I wish to express my heartfelt thanks to all the people that supported me during the composition of this work. I have learned so many new and exciting things, and for that reason I would like to especially thank Dr Nikolaos Xiros and Dr Manhar Dhanak for being my advisors, guiding and giving me the chance to work on this project. Special thanks to my family for supporting me in pursuing this Masters degree far away from my home country, to all my friends back in Greece who would constantly cheer me up, to great friends and roommates, and to this specific person that I made sad when I decided to pursue my dreams in a foreign country. Lastly I would like to thank Dr, Pierre-Philippe Beaujean for showing me that wonderful mathematics is behind wonderful music. iv ABSTRACT Author: Dimitrios Psarrou Title: Simulations and feedback control of non linear coupled electromechanical oscillators for energy conversion applications Institution: This thesis discusses the coupling of a mechanical and electrical oscillator, an arrangement that is often encountered in mechatronics actuators and sensors. The dynamics of this coupled system is mathematically modeled and a low pass equivalent model is presented. Numerical simulations are then performed, for various input signals to characterize the nonlinear relationship between the electrical current and the displacement of the mass. Lastly a framework is proposed to estimate the mass position without the use of a position sensor, enabling the sensorless control of the coupled system and additionally providing the ability for the system to act as an actuator or a sensor. This is of value for health monitoring, diagnostics and prognostics, actuation and power transfer of a number of interconnected machines that have more than one electrical system, driving corresponding mechanical subsystems while being driven by the same voltage source and at the same time being spectrally separated and independent.

Dimitrios Psarrou

Papers

Simulations and feedback control of non linear coupled electromechanical oscillators for energy conversion applications