Sökning: "Bifurcation"

Visar resultat 21 - 25 av 83 avhandlingar innehållade ordet Bifurcation.

  1. 21. On the stability and control of piecewise-smooth dynamical systems with impacts and friction

    Författare :Fredrik Svahn; Annika Stensson Trigell; Harry Dankowicz; Jenny Jerrelind; Lawrie Virgin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; non-smooth dynamics; nonlinear control; low-velocity impacts; friction; bifurcations; Solid mechanics; Fastkroppsmekanik;

    Sammanfattning : This thesis concerns the analysis of dynamical systems suitable to be modelled by piecewise-smooth differential equations. In such systems the continuous-in-time dynamics is interrupted by discrete-in-time jumps in the state or governing equations of motion. LÄS MER

  3. 22. Pulse and hold switching current readout of superconducting quantum circuits

    Författare :Jochen Walter; David Haviland; Hans Mooij; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Josephson junction; readout; qubit; detector; frequency dependent damping; quantronium; phase-space; correlation analysis; Physics; Fysik;

    Sammanfattning : Josephson junction qubits are promising candidates for a scalable quantum processor. Such qubits are commonly manipulated by means of sequences of rf-pulses and different methods are used to determine their quantum state. LÄS MER

  4. 23. Low-cost control of discontinuous systems including impacts and friction

    Författare :Fredrik Svahn; Annika Stensson Trigell; Harry Dankowicz; Jenny Jerrelind; Remco Leine; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear dynamics; discontinuities; nonlinear control; impacts; friction; vehicle suspensions; Vehicle engineering; Farkostteknik;

    Sammanfattning : For a successful design of an engineering system it is essential to pay careful attention to its dynamic response. This is particularly true, in the case of nonlinear systems, since they can exhibit very complex dynamic behaviour, including multiple co-existing stable solutions and chaotic motions, characterized by large sensitivity to initial conditions. LÄS MER

  5. 24. On the breakdown of regularity of invariant curves in quasi-periodically forced systems

    Författare :Thomas Ohlson Timoudas; Kristian Bjerklöv; Joaquim Puig; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dynamical systems; strange attractors; Schrödinger cocycles;

    Sammanfattning : In this thesis we study the process of torus collisions in one-parameter families of quasi-periodically forced dynamical systems. Specifically, we study the process whereby two invariant curves (homeomorphic to circles), one attracting and one repelling, bifurcate into a strange non-chaotic attractor. LÄS MER

  7. 25. Individual Information Adaptation Based on Content Description

    Författare :Erik Oskar Wallin; KTH; []
    Nyckelord :metadata; semantic web; personalization; information adaptation; one-to-one marketing; evaluation; optimization; personification; customization; individualization; internet; content filtering; automation;

    Sammanfattning : Today’s increasing information supply raises the needfor more effective and automated information processing whereindividual information adaptation (personalization) is onepossible solution. Earlier computer systems for personalizationlacked the ability to easily define and measure theeffectiveness of personalization efforts. LÄS MER