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I T is well-established that numerous problems in control systems involve the use of positive polynomials, i.e., multi-variate polynomials that take only positive values over a domain of interest. Indeed, constraint satisfaction is equivalent to the positivity of a suitable function, as well as performance computation amounts to determining the best(More)
This paper presents a low cost, modular, configurable and fully protected education tool based on a generic electronic converter to be used by students, providing them with skills regarding power electronics and converters, and enabling them to learn from experience the most important issues concerning DC and AC electric drives
This paper presents a digital controller suitable for an instructional laboratory in electric drives. A prototype has been designed specifically to meet the requirements of low cost and motivating education tool, and it contains all of the active functions required to implement the open loop control of induction motors. This approach develops the concept of(More)
Acknowledgements First, I would like to thank Prof. Alexander Prestel for giving me the opportunity of writing my thesis at the University Konstanz and for the inestimable lessons about the philosophy of doing mathematics and mathematical research, which I will remember for the rest of my life. His advices shaped my " mathematical character " , and he was(More)
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