Sökning: "infinity"

Visar resultat 1 - 5 av 132 avhandlingar innehållade ordet infinity.

  1. 1. To infinity and back : Logical limit laws and almost sure theories

    Författare :Ove Ahlman; Vera Koponen; Kerkko Luosto; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; finite model theory; almost sure theories; rigid structures; limit laws; Mathematical Logic; Matematisk logik;

    Sammanfattning : .... LÄS MER

  3. 2. On Scalable H-infinity Control

    Författare :Carolina Lidström; Institutionen för reglerteknik; []
    Nyckelord :;

    Sammanfattning : Many of the classical approaches to controller synthesis do not scale well for large and complex systems. This is mainly due to computational complexity and the lack of distributed structure in the resulting controllers. LÄS MER

  4. 3. Världsmaskinen. Emanuel Swedenborgs naturfilosofi

    Författare :David Dunér; Avdelningen för idé- och lärdomshistoria; []
    Nyckelord :HUMANIORA; HUMANITIES; Christopher Polhem; Charles XII; hydrodynamics; technology; optics; acoustics; mechanics; space; theology; number systems; neurology; iatromechanics; body and soul; infinity; mineralogy; cosmology; matter theory; perception; analogy; metaphors; cognition; 18th century Swedish history; philosophy of science; philosophy of religion; mechanical philosophy; philosophy; geometry; mathematics; history of science; Emanuel Swedenborg 1688–1772 ; natural philosophy; History of philosophy; history of ideas; Filosofins historia; idéhistoria; History of science; Vetenskapshistoria;

    Sammanfattning : The Swedish natural philosopher Emanuel Swedenborg (1688–1772) thought in his early scientific career that the world was like a gigantic machine, following the laws of mechanics and geometry. The work presented here is a study of his mechanistic worldview and metaphorical way of thinking up to the year 1734, examining most of his fields of interest, from geometry and metaphysics to technology and mining engineering. LÄS MER

  5. 4. On H-infinity Control and Large-Scale Systems

    Författare :Carolina Bergeling; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H-infinity Control; Decentralized Control; Large-Scale Systems; Infinite-Dimensional Systems;

    Sammanfattning : In this thesis, a class of linear time-invariant systems is identified for which a particular type of H-infinity optimal control problem can be solved explicitly. It follows that the synthesized controller can be given on a simple explicit form. LÄS MER

  7. 5. On design of low order H-infinity controllers

    Författare :Daniel Ankelhed; Anders Hansson; Anders Helmersson; Jakob Stoustrup; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H-infinity synthesis; linear systems; linear matrix inequalities; rank constraints; optimization; rational constraints; interior point methods; Automatic control; Reglerteknik;

    Sammanfattning : When designing controllers with robust performance and stabilization requirements, H-infinity synthesis is a common tool to use. These controllers are often obtained by solving mathematical optimization problems. The controllers that result from these algorithms are typically of very high order, which complicates implementation. LÄS MER