Essays about: "Koopman operator"

Found 3 essays containing the words Koopman operator.

1. 1. 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

3. 2. Koopman mode analysis of the side-by-side cylinder wake

   University essay from KTH/Mekanik

   Author : Jimmy Röjsel; [2017]
   Keywords : Bluff body; wake flow; Side-by-side cylinder wake; Flip-op instability; Modal analysis; Koopman operator; Koopman mode decomposition;

   Abstract : In many situations, fluid flows can exhibit a wide range of temporal and spatial phenomena. It has become common to extract physically important features, called modes, as a first step in the analysis of flows with high complexity. READ MORE

4. 3. Investigation of Power Grid Islanding Based on Nonlinear Koopman Modes

   University essay from KTH/Elektriska energisystem

   Author : Fredrik Raak; [2013]
   Keywords : controlled islanding; grid partitioning; power system monitoring; Koopman mode analysis; spectral graph theory;

   Abstract : To view the electricity supply in our society as just sockets mountedin our walls with a constant voltage output is far from the truth. Inreality, the power system supplying the electricity or the grid, is themost complex man-made dynamical system there is. It demands severecontrol and safety measures to ensure a reliable supply of electric power. READ MORE