Results 81 to 90 of about 785,707 (321)

Nonlinear growth of zonal flows by secondary instability in general magnetic geometry

New Journal of Physics, 2017
We present a theory of the nonlinear growth of zonal flows in magnetized plasma turbulence, by the mechanism of secondary instability. The theory is derived for general magnetic geometry, and is thus applicable to both tokamaks and stellarators.
G G Plunk, A Bañón Navarro
doaj   +1 more source

Stability Analysis of Multistage One-Step Multiderivative Methods for Nonlinear Impulsive Differential Equations in Banach Spaces [PDF]

, 2021
Tao Long, Yuexin Yu
openalex   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Some new remarks on MHD Jeffery-Hamel fluid flow problem

Open Physics, 2017
A Hamilton-Poisson realization of the MHD Jeffery-Hamel fluid flow problem is proposed. Tthe nonlinear stability of the equilibrium states is discussed.
Ene Remus-Daniel, Pop Camelia
doaj   +1 more source

Optimized Time–Frequency Analysis for Induction Motor Fault Detection Using Hybrid Differential Evolution and Deep Learning Techniques

International Journal of Adaptive Control and Signal Processing, EarlyView.
Workflow of the parameter optimization process for ITSC fault detection, applying Differential Evolution optimization and the Smooth Pseudo Wigner‐Ville Distribution for signal processing. The optimized parameters are then used in the failure identification pipeline, which combines the signal processing with a YOLO‐based architecture for fault severity
Rafael Martini Silva, Avyner Lorran de Oliveira Vitor, Marcelo Favoretto Castoldi, Alessandro Goedtel, Wesley Angelino Souza   +4 more
wiley   +1 more source

Neural Nonparametric Stability Indicator for Self-Excited Dynamical Systems

IEEE Access
This article introduces a novel methodology employing deep-learning neural networks to estimate Lyapunov functions in dynamic systems accurately. Unlike traditional parametric approaches, our method is model-free, enabling adaptability to various system ...
Krzysztof Lalik
doaj   +1 more source

Stability analysis for nonlinear closed loop system structure

Systems Science & Control Engineering, 2020
In this paper, stability analysis is studied for the nonlinear closed loop system with a nonlinear plant and a nonlinear controller. Without the linearizing process for the nonlinear plant and the nonlinear controller, a Lipschitz continuous assumption ...
Wang Jianhong, Ricardo A. Ramirez-Mendoza   +1 more
doaj   +1 more source

Practical Ulam-Hyers-Rassias stability for nonlinear equations [PDF]

Mathematica Bohemica, 2017
In this paper, we offer a new stability concept, practical Ulam-Hyers-Rassias stability, for nonlinear equations in Banach spaces, which consists in a restriction of Ulam-Hyers-Rassias stability to bounded subsets.
Jin Rong Wang, Michal Fečkan
doaj   +1 more source

Nonlinear stability of the ensemble Kalman filter with adaptive covariance inflation [PDF]

, 2015
The Ensemble Kalman filter and Ensemble square root filters are data assimilation methods used to combine high dimensional nonlinear models with observed data.
Kelly, David, Majda, Andrew J, Tong, Xin T   +2 more
core  

Stability of stationary solutions of the Schrodinger-Langevin equation

, 2003
The stability properties of a class of dissipative quantum mechanical systems are investigated. The nonlinear stability and asymptotic stability of stationary states (with zero and nonzero dissipation respectively) is investigated by Liapunov's direct ...
Arnold, Beretta, Bistrovic, Bittner, Bohm, Bolivar, Caldeira, Caldeira, Cislo, de la Pea, Dekker, Diósi, Donoso, Fritcshe, Fényes, Földi, Fülöp, Gao, Greenberger, Gross, Gross, Hasse, Holland, Holm, Hu, Jánossy, Jánossy, Kan, Kato, Kostin, Lindblad, Lopreore, Maddox, Madelung, Mensky, Muschik, Nelson, P. Ván, Skagerstam, Szapudi, T. Fülöp, Tarasov, Um, Vacchini, Ván, Wallstrom, Weiss, Wysocki, Yasue   +48 more
core   +3 more sources