Results 61 to 70 of about 4,815 (160)
Bursting Oscillation Characteristics and Improved AHODFC for DFIG and PMSG Combined Wind Farm
Energy Internet, EarlyView.ABSTRACT Bursting oscillations occur in DFIG and PMSG combined wind farm under external disturbances and lead to the instability problems. To reveal the bursting oscillation characteristics and develop a suppression method, a fast‐slow dynamics analysis method and an improved adaptive high‐order differential feedback controller (AHODFC) based on ...
Kun Wang +3 more
wiley +1 more source
Energy Internet, EarlyView.ABSTRACT Power system operation is inherently a sequential decision‐making problem, traditionally addressed through optimisation models built upon high‐quality load forecasts. However, the rapid proliferation of renewable generation and price‐responsive demands, such as electric vehicles and merchant energy storage, has introduced multiple sources of ...
Wei Wei, Runze Liang
wiley +1 more source
Anchor Flow Maps: Efficient Sampling and Approximation of the Entire Flow Map
Computer Graphics Forum, EarlyView.Abstract Flow maps are a fundamental concept for the visualization and analysis of time‐dependent flows. A common approach is to apply sampling and reconstruction – which comes with a number of problems: flow maps are high‐dimensional functions with locally large gradients which makes approximations very challenging.
D. Stelter +3 more
wiley +1 more source
Correlation functions for open strings and chaos
Journal of High Energy PhysicsWe study the holographic interpretation of the bulk instability, i.e. the bulk Lyapunov exponent in the motion of open classical bosonic strings in AdS black hole/brane/string backgrounds.
Vladan Ðukić, Mihailo Čubrović
doaj +1 more source
Maximum Lyapunov exponent-based multiple chaotic slime mold algorithm for real-world optimization. [PDF]
Sci Rep, 2023 Yang J +5 more
europepmc +1 more source
Parametric Time‐Variation in the Unconditional Volatility: Estimation and Inference
Journal of Time Series Analysis, EarlyView.ABSTRACT We propose modeling time‐variation in the unconditional volatility by augmenting the standard GARCH model by a deterministic time‐varying intercept. The model, called the additive time‐varying (ATV‐)GARCH model, can be interpreted as a reduced form of a model including covariates and can be derived from a multiplicative decomposition of ...
Niklas Ahlgren +2 more
wiley +1 more source
MOTION STABILITY ANALYSIS OF FOUR ROTOR AIRCRAFT BASED ON LYAPUNOV INDEX METHOD
Jixie qiangdu, 2019 According to the four rotor aircraft in a relatively complex near earth space, easily disturbed, and the emergence of jitter and out of control of motion stability, this paper investigated the motion stability of four rotor aircraft based on Lyapunov ...
TANG MingJun, SUN Shuai
doaj
Largest Lyapunov Exponent Optimization for Control of a Bionic-Hand: A Brain Computer Interface Study. [PDF]
Front Rehabil Sci, 2021 Hekmatmanesh A, Wu H, Handroos H.
europepmc +1 more source
Partial Observation of Linear Systems With the Mori–Zwanzig Formalism
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT The Mori–Zwanzig (MZ) formalism provides a systematic framework for deriving reduced‐order model of dynamical systems when only part of the state is observed, but its practical use is often limited by the complexity of the resulting computations.
Fan Wang, Peter Benner, Jan Heiland
wiley +1 more source
Lyapunov Spectra of Coulombic and Gravitational Periodic Systems
Entropy, 2017 An open question in nonlinear dynamics is the relation between the Kolmogorov entropy and the largest Lyapunov exponent of a given orbit. Both have been shown to have diagnostic capability for phase transitions in thermodynamic systems.
Pankaj Kumar, Bruce N. Miller
doaj +1 more source