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Showing result 1 - 5 of 10 swedish dissertations matching the above criteria.

  2. 1. An optimization approach to the design of robust controllers : applied to a tokamak control problem

    Author : Carl-Magnus Fransson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SQP; PID control; mu-analysis; robustness; tokamak; QFT; onconvex global optimization; plasma; H infin-control; performance;

    Abstract : .... READ MORE

  4. 2. Optimization Methods for Robust Control with Application to Resistive Wall Modes in Tokamaks

    Author : Carl-Magnus Fransson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H?; fusion; QFT; performance; tokamak; optimization; robustness; structured singular value; control; plasma; resistive wall modes; LMI; PID control;

    Abstract : In many research areas physical systems are described by mathematical models. We focus here on systems that are regulated by a controller, typically realized by software, whose design involves certain parameters. READ MORE

  5. 3. Model Reduction for Control of Stirred Tank Reactor Processes

    Author : Veronica Olesen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; QFT; CSTR; sensitivity functions; Model simplification; closed loop;

    Abstract : Models of chemical processes have a tendency of being far too complex for controller design. In many cases these models are also too complex for simulation together with other sub-systems, due to long simulation times and numerical problems. READ MORE

  6. 4. Aspects of QFT with boundaries and D-branes

    Author : Maxim Zabzine; Constantin Bachas; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik;

    Abstract : Modern string theory is a rich framework which goes beyond standard quantum field theory. There is a belief that at low energies string theory reduces to the Standard Model and Einstein's gravity. In the last years we have learned that there exist different descriptions of the same physics, containing both strings and other extended objects. READ MORE

  7. 5. Quivers, superconformal field theories and higher symmetries

    Author : Robert Moscrop; Michele Del Zotto; Johannes Walcher; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum field theory; Supersymmetry; Conformal field theory; Quivers; Seiberg-Witten theory; Geometric engineering; Higher symmetries; Theoretical Physics; Teoretisk fysik; Machine learning; Maskininlärning;

    Abstract : Quantum field theory (QFT) currently provides our best description of the natural world. Over the past century, it has been able to accurately reproduce many experimental results to an astonishing degree of accuracy and predict the existence of new particles. Despite this, QFT suffers from several mathematical problems. READ MORE