Sökning: "Dynamiska system"

Visar resultat 6 - 10 av 190 avhandlingar innehållade orden Dynamiska system.

  1. 6. Properties of invariant sets in certain two-dimensional dynamical systems : Renormalization and beyond

    Författare :Dan Lilja; Denis Gaidashev; Konstantin Khanin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dynamical systems; renormalization; area-preserving maps; unbounded geometry; almost commuting pairs; universality; non-rigidity;

    Sammanfattning : This thesis consists of an introduction and four research papers concerning dynamical systems, focusing on renormalization in two dimensions.Paper I (joint with Jordi-Lluís Figueras) studies a generalization of the anti-integrable limit of skew-product systems based on a Frenkel-Kontorova model. LÄS MER

  3. 7. Computer Assisted Studies in Fluid Mechanics and Spectral Geometry

    Författare :Joel Dahne; Jordi-Lluis Figueras; María Ángeles García-Ferrero; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Sammanfattning : .... LÄS MER

  4. 8. System-Wide Impacts of Distributed Generation on Power System Operation : Data-Driven Approaches to Addressing the Challenges of Integrating Distributed Generation

    Författare :Tin Rabuzin; Lars Nordström; Marjan Popov; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; data-driven modelling; distributed generation; dynamic equivalencing; islanding detection; reduced order modelling; datadriven modellering; detektion av ödrift; distribuerad generation; dynamisk modellering; reducerad ordningsmodellering; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Deployment of distributed generation (DG) is happening at an increasing rate driven by both the need for the reduction of humanity's carbon footprint and economic opportunities. The trend of increasing penetration levels of DG has also introduced interdependence between the responsibilities of system operators and the owners of the generating units. LÄS MER

  5. 9. On Reduction of Production Disturbances in Manufacturing Systems Based on Discrete-Event Simulation

    Författare :Arne Ingemansson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automatiska system; robotteknik; reglerteknik; Production technology; Produktionsteknik; control engineering; robotics; Automation; manufacturing system; Discrete-event simulation DES ; production disturbance reduction;

    Sammanfattning : Improved efficiency in manufacturing systems to achieve increased output and thus reduced production disturbances is a vital area. DES (Discrete-Event Simulation) can visualize and study the dynamic issues related to total efficiency in manufacturing systems. A methodology for production disturbance reduction is presented. LÄS MER

  7. 10. Learning in the Loop : On Neural Network-based Model Predictive Control and Cooperative System Identification

    Författare :Rebecka Winqvist; Bo Wahlberg; Cristian R. Rojas; Axel Ringh; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Learning; Model Predictive Control; System Identification; Optimal Transport; Inlärning; Modellprediktiv reglering; Systemidentifiering; Optimal transport; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Inom reglerteknik har integrationen av maskininlärningsmetoder framträtt som en central strategi för att förbättra prestanda och adaptivitet hos styrsystem. Betydande framsteg har gjorts inom flera viktiga aspekter av reglerkretsen, såsom inlärningsbaserade metoder för systemidentifiering och parameterskattning, filtrering och brusreducering samt reglersyntes. LÄS MER