Search for dissertations about: "small gain theorem"

Showing result 1 - 5 of 6 swedish dissertations containing the words small gain theorem.

  1. 1. On the robust stability analysis of VSC-HVDC systems

    Author : Yujiao Song; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; passivity theorem; small gain theorem; symbolic eigenvalue expressions; Nyquist stability analysis; distributed parameter cable model; VSC-HVDC system; AC-grid interaction;

    Abstract : This thesis focuses on small signal stability analysis of VSC-HVDC systems, emphasizing the system stability robustness with regard to the connected AC-grid and the distributed parameter DC-grid model respectively. In addition, for strong AC-grid connected systems, analytical eigenvalue expressions are provided to investigate the impact of physical or control parameters on the system stability for both two-terminal and multi-terminal VSC-HVDC systems. READ MORE

  2. 2. Regret and Risk Optimal Design in Control

    Author : Matias Müller; Cristian R. Rojas; Anders Rantzer; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Engineering sciences deal with the problem of optimal design in the face of uncertainty. In particular, control engineering is concerned about designing policies/laws/algorithms that sequentially take decisions given unreliable data.This thesis addresses two particular instances of optimal sequential decision making for two different problems. READ MORE

  3. 3. Learning Sequential Decision Rules in Control Design: Regret-Optimal and Risk-Coherent Methods

    Author : Matias I. Müller; Cristian R. Rojas; Håkan Hjalmarsson; Tom Oomen; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Engineering sciences deal with the problem of optimal design in the face of uncertainty. In particular, control engineering is concerned about designing policies/laws/algorithms that sequentially take decisions given unreliable data. This thesis addresses two particular instances of optimal sequential decision making for two different problems. READ MORE

  4. 4. On Lorentz Invariance, Regularity and Global Existence for Kinetic Equations

    Author : Håkan Andreasson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : ;

    Abstract : [A1] Regularity of the gain term and strong L1 convergence to equilibrium for the relativistic Boltzmann equation. The main purpose of the paper is to show that the gain term of the relativistic collision operator is regularizing. This is a generalization of P.L. READ MORE

  5. 5. Dispersion Relations in Scattering and Antenna Problems

    Author : Christian Sohl; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acoustic and electromagnetic waves; sum rules; scattering and absorption; causality; Herglotz functions;

    Abstract : This dissertation deals with physical bounds on scattering and absorption of acoustic and electromagnetic waves. A general dispersion relation or sum rule for the extinction cross section of such waves is derived from the holomorphic properties of the scattering amplitude in the forward direction. READ MORE