Essays about: "lyapunov"

Showing result 6 - 10 of 38 essays containing the word lyapunov.

  1. 6. Predicting the Temporal Dynamics of Turbulent Channels through Deep Learning

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Borrelli Giuseppe; [2021]
    Keywords : Turbulent Flows; Deep Learning; Minimal Channel Flow; Fourier POD FFT-POD ; Data-driven analysis; Long-short-term-memory LSTM networks.;

    Abstract : The interest towrds machine learning applied to turbulence has experienced a fast-paced growth in the last years. Thanks to deep-learning algorithms, flow-control stratigies have been designed, as well as tools to model and reproduce the most relevant turbulent features. READ MORE

  3. 7. Networked Model Predictive Control for Satellite Formation Flying

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Damiana Catanoso; [2019]
    Keywords : Satellite Formation Flying; Model Predictive Control;

    Abstract : A novel continuous low-thrust fuel-efficient model predictive control strategy for multi-satellite formations flying in low earth orbit is presented. State prediction relies on a full nonlinear relative motion model, based on quasi-nonsingular relative orbital elements, including earth oblateness effects and, through state augmentation, differential drag. READ MORE

  4. 8. On the dynamics of a family of critical circle endomorphisms

    University essay from KTH/Matematik (Avd.)

    Author : Nils Hemmingsson; [2019]
    Keywords : Dynamical systems; Hyperbolic dynamics; Non-uniform hyperbolicity; Lyapunov exponents; Dynamiska system; Hyperboliska system; Icke-likformig hyperbolicitet; Lyapunovexponenter;

    Abstract : In this thesis we study two seperate yet related three parameter-families of continuously differentiable maps from the unit circle to unit circle which have a single critical point. For one of the families we show that there is a set of positive measure of parameters such that there is a set of positive measure for which all points in the latter set, the derivative experiences exponential growth. READ MORE

  5. 9. Laguerre Bases for Youla-Parametrized Optimal-Controller Design: Numerical Issues and Solutions

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Olle Kjellqvist; [2018]
    Keywords : Technology and Engineering;

    Abstract : This thesis concerns the evaluation of cost functionals on H2 when designing optimal controllers using finite Youla parameterizations and convex optimization. We propose to compute inner products of stable, strictly proper systems via solving Sylvester equations. READ MORE

  6. 10. Constructing Multidimensional Dynamical Systems with Positive Lyapunov Exponents

    University essay from KTH/Matematik (Avd.)

    Author : Martin Andersson; [2018]
    Keywords : ;

    Abstract : In this thesis we adapt Marcelo Viana's general construction of smooth transformations exhibiting non-uniform expansion in several dimensions. In our construction we, instead of coupling with a quadratic map, as Viana did, derive the expansion from a mapping with a cubic critical point. READ MORE