Results 41 to 50 of about 106,416 (291)

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

Synchronization Stability Analysis of PLL-Based Grid-Connected VSC System by Voltage Space Vectors

CSEE Journal of Power and Energy Systems
This paper focuses on synchronization stability analysis of the power system, in which power electronics are synchronized by the phase-locked loop (PLL).
Huadong Sun, Shuyan Wang, Shiyun Xu, Jingtian Bi, Yiming Wang   +4 more
doaj   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane, Salama Makni, Mourad Kchaou, Ahmed El Hajjaji   +3 more
wiley   +1 more source

Nonlinear Modeling and Transient Stability Analysis of Grid-Connected Voltage Source Converters during Asymmetric Faults Considering Multiple Control Loop Coupling

Applied Sciences
As large-scale renewable energy sources are increasingly integrated into AC grids via voltage source converters (VSCs), the transient synchronization stability of phase-locked loop (PLL)-based VSCs during fault ride-through is gaining more attention ...
Jingkuan Guo, Denghui Zhai, Xialin Li, Zhi Wang   +3 more
doaj   +1 more source

Impedance Estimation for Transient Stability Enhancement of Virtual Synchronous Machines

2024 IEEE 15th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
In this paper, a passive technique for estimating the impedance and voltage of a Thévenin grid is presented. The method can be applied when either the maximum active power or minimum reactive power operating point, with respect to the power angle, is crossed. This work addresses transient events, for which the former occurs.
Pepper, Benjamin, Campos-Gaona, David
openaire   +3 more sources

Transient Stability Analysis of a Synchronous Motor by Lyapunov Method.

IEEJ Transactions on Industry Applications, 1991
Since a synchronous motor is held heavy nonlinearity, the transient stability analysis of it is generally laborious. Conventionally, this analysis has been used numerical solution or equal-area method, whereas this paper is proposed a new transient stability criterion by applying Lyapunov method which is powerful for nonlinear systems to estimate these
Senjyu, Tomonobu, Uezato, Katsumi
openaire   +2 more sources

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Synchronization Dynamics in Non-Normal Networks: The Trade-Off for Optimality

Entropy, 2020
Synchronization is an important behavior that characterizes many natural and human made systems that are composed by several interacting units. It can be found in a broad spectrum of applications, ranging from neuroscience to power-grids, to mention a ...
Riccardo Muolo, Timoteo Carletti, James P. Gleeson, Malbor Asllani   +3 more
doaj   +1 more source

Semantic Modeling in Materials Science and Engineering With Platform MaterialDigital Core Ontology 3.0

Advanced Engineering Materials, EarlyView.
The community‐driven Platform MaterialDigital Core Ontology (PMDco) 3.0 is introduced as a Basic Formal Ontology‐aligned semantic backbone for the processing–structure–properties paradigm in Materials Science and Engineering. Modular engineering, automated releases, and validation workflows are highlighted and key semantic patterns for materials ...
Markus Schilling, Philipp von Hartrott, Jörg Waitelonis, Thomas Hanke, Henk Birkholz, Hossein Beygi Nasrabadi, Khashayar Razghandi, Kamilla Zaripova, Felix Thonagel, Fabian Neuhaus, Martin Glauer, Lars Vogt, Harald Sack, Lutz Mädler, Bernd Bayerlein, Chris Eberl   +15 more
wiley   +1 more source

Generalized Dynamic Security Region of Grid-Following and Grid-Forming Converter-Based Systems by Basin of Attraction Method

Applied Sciences
With renewable integration and zero-carbon microgrids achieving 100% penetration, converter-dominated systems exhibit millisecond-timescale transient synchronization, which challenges existing physical cognitive methods and cognitive methodology with the
Rui Ma, Yan Cheng, Shibo Wang, Shumin Sun, Wei Cong   +4 more
doaj   +1 more source