Advanced search

Showing result 1 - 5 of 7 essays matching the above criteria.

  1. 1. Models of the Universe : An analysis of the asymptotic behaviour of non-linear dynamical systems

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Noa Vikman; Gustav Romare; [2021]
    Keywords : ;

    Abstract : In this thesis we present some relevant theory, and then we rigorously investigate the existence intervals and the asymptotic behaviors of three cosmological models. The first model we investigate is based on the Friedmann-Lemaître-Robertson-Walker (FLRW) metric, which is consistent with the cosmological principle. READ MORE

  3. 2. Neural Network Based Model Predictive Control of Turbulent Gas-Solid Corner Flow

    University essay from Uppsala universitet/Signaler och system

    Author : Simon Wredh; [2020]
    Keywords : computational fluid dynamics; machine learning; system identification; control theory; multi-phase flow; gas-solid flow; rans; lagrangian particle tracking; neural network; model predictive control; bio-aerosol;

    Abstract : Over the past decades, attention has been brought to the importance of indoor air quality and the serious threat of bio-aerosol contamination towards human health. A novel idea to transport hazardous particles away from sensitive areas is to automatically control bio-aerosol concentrations, by utilising airflows from ventilation systems. READ MORE

  4. 3. Reduced Order Modelling using Dynamic Mode Decomposition and Koopman Spectral Analysis with Deep Learning

    University essay from Lunds universitet/Matematik LTH

    Author : David Krantz; Olof Månsson; [2020]
    Keywords : non-linear dynamical systems; modal decomposition; Koopman operator theory; machine learning; data-driven analysis; Mathematics and Statistics;

    Abstract : In the industry simulation models are commonly used in system development. These models can become complicated in order to capture the physical behaviour of the underlying dynamical system. A high-fidelity representation, which can result in long simulation times, is in some settings not strictly required. READ MORE

  5. 4. Sensor fusion and fault diagnosticsin non-linear dynamical systems.

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Albin Nilsson; [2020]
    Keywords : Fault detection and isolation; FDI; sensor fusion; nonlinear; four wheel drive; vehicle; kinematics; kalman filter; KF; EKF; parity relations;

    Abstract : Sensors are highly essential components in most modern control systems and are used in increasingly complex ways to improve system precision and reliability. Since they are generally susceptible to faults it is common to perform on-line fault diagnostics on sensor data to verify nominal behavior. READ MORE

  6. 5. Optimal consensus and opinion dynamics

    University essay from KTH/Optimeringslära och systemteori

    Author : Othmane Mazhar; [2016]
    Keywords : ;

    Abstract : In the following thesis we study the influence of the communication graph on the behavior of multi-agent systems. Specifically we investigate two issues the first is concerned with the existence of consensus control for linear dynamics, the second is a study of the behavior of a nonlinear dynamical related to opinion dynamics. READ MORE