Results 51 to 60 of about 179,380 (196)
Mathematics, 2021 In this paper, we introduce a model-free algorithm, robust mode analysis (RMA), to extract primary constituents in a fluid or reacting flow directly from high-frequency, high-resolution experimental data.
Gemunu H. Gunaratne, Sukesh Roy
doaj +1 more source
Data-Driven Approximation of Transfer Operators: Naturally Structured Dynamic Mode Decomposition
, 2017 In this paper, we provide a new algorithm for the finite dimensional approximation of the linear transfer Koopman and Perron-Frobenius operator from time series data.
froyland, klus, lasota, mezi?, surana
core +1 more source
A Class of Logistic Functions for Approximating State-Inclusive Koopman Operators
, 2017 An outstanding challenge in nonlinear systems theory is identification or learning of a given nonlinear system's Koopman operator directly from data or models.
arbabi +7 more
core +1 more source
Data-driven Identification and Prediction of Power System Dynamics Using Linear Operators [PDF]
, 2019 In this paper, we propose linear operator theoretic framework involving Koopman operator for the data-driven identification of power system dynamics. We explicitly account for noise in the time series measurement data and propose robust approach for data-
Ajjarapu, Venkataramana +4 more
core +4 more sources
IEEE Access, 2022 This paper proposes a data-centric model predictive control (MPC) for supplemental control of a DFIG-based wind farm (WF) to improve power system stability.
Ahmed Husham +3 more
doaj +1 more source
Measuring center of pressure signals to quantify human balance using multivariate multiscale entropy by designing a force platform [PDF]
, 2013 Copyright @ 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).To assess the ...
Ahmed +29 more
core +3 more sources
Visualizing GPR Data Using Spatial-Subband Configuration
IEEE Access, 2018 In ground penetrating radar (GPR) applications, base-scale analysis can be a powerful tool to support data analysis and to build a consensus in data interpretation.
Da Yuan, Mei Hong, Zhiyong An
doaj +1 more source
Kernel methods for detecting coherent structures in dynamical data
, 2019 We illustrate relationships between classical kernel-based dimensionality reduction techniques and eigendecompositions of empirical estimates of reproducing kernel Hilbert space (RKHS) operators associated with dynamical systems.
Husic, Brooke E. +3 more
core +1 more source
Model-Free Geometric Fault Detection and Isolation for Nonlinear Systems Using Koopman Operator
IEEE Access, 2022 This paper presents a model-free fault detection and isolation (FDI) method for nonlinear dynamical systems using Koopman operator theory and linear geometric technique.
Mohammadhosein Bakhtiaridoust +3 more
doaj +1 more source
Shanghai Jiaotong Daxue xuebao, 2021 Extended finite element method (XFEM) is based on the idea of unit decomposition. The jump function that can reflect the discontinuity of the crack surface and the progressive displacement field function of the crack tip is added to the conventional ...
GUO Deping, LI Zheng, PENG Senlin, ZENG Zhikai, WU Daifeng
doaj +1 more source