Results 61 to 70 of about 212,072 (202)

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

Towards tensor-based methods for the numerical approximation of the Perron-Frobenius and Koopman operator

, 2016
The global behavior of dynamical systems can be studied by analyzing the eigenvalues and corresponding eigenfunctions of linear operators associated with the system.
Klus, Stefan, Schütte, Christof
core   +1 more source

Decentralized Stability Enhancement of DFIG-Based Wind Farms in Large Power Systems: Koopman Theoretic Approach

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, Innocent Kamwa, M. A. Abido, Hussein Supreme   +3 more
doaj   +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, Meysam Yadegar, Nader Meskin, Mohammad Noorizadeh   +3 more
doaj   +1 more source

Identification of Dielectric Response Parameters of Pumped Storage Generator-Motor Stator Winding Insulation Based on Sparsity-Enhanced Dynamic Decomposition of Depolarization Current

Energies
Accurate diagnosis of the insulation condition of stator windings in pumped storage generator-motor units is crucial for ensuring the safe and stable operation of power systems.
Guangya Zhu, Shiyu Ma, Shuai Yang, Yue Zhang, Bingyan Wang, Kai Zhou   +5 more
doaj   +1 more source

Numerical Calculation Method for Crack Dynamic Propagation Based on Newmark Implicit Time Integration Scheme

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

EEG-Based Detection of Induced Relaxation

IEEE Access
Relaxation, which refers to the absence of tension and stress, is important for health because extended periods of tension may lead to illness. This study detected induced relaxation through electroencephalography (EEG) for the real-time monitoring of ...
Bunyarat Umsura, Wanus Srimaharaj, Phakkharawat Sittiprapaporn, Nina Bencheva, Ratchuporn Suksathan, Roungsan Chaisricharoen   +5 more
doaj   +1 more source

Advancing Logistics Management: E3L-Net for Predictive Demand Analytics

IEEE Access
The essence of smart logistics lies in leveraging information resources and intellectual assets to efficiently and precisely match the multidimensional demands and supplies within the logistics system.
Yao Lu
doaj   +1 more source

Looseness Identification of Transmission Tower Based on Inertial Measurement

IEEE Access
Transmission towers play a critical role in power systems. In this study, we propose an innovative approach for the structural health monitoring of transmission towers with the aim of accurately identifying structural looseness and its location ...
Liuyang Shen, Jinxian Yang
doaj   +1 more source

Decomposition of Nonlinear Dynamical Systems Using Koopman Gramians

, 2017
In this paper we propose a new Koopman operator approach to the decomposition of nonlinear dynamical systems using Koopman Gramians. We introduce the notion of an input-Koopman operator, and show how input-Koopman operators can be used to cast a ...
alvin, clevert, dullerud, fredrik, korda, korf, li, mung, nitish, proctor, yeung, yeung   +11 more
core   +1 more source