Results 41 to 50 of about 93,147 (298)

Identification of Non-linear Nonautonomous State Space Systems from Input-Output Measurements [PDF]

open access: yes, 2000
This paper presents a method to determine a nonlinear state-space model from a finite number of measurements of the inputs and outputs. The method is based on embedding theory for nonlinear systems, and can be viewed as an extension of the subspace ...
Scherpen, J.M.A.   +3 more
core   +6 more sources

Fault‐tolerant individual pitch control of floating offshore wind turbines via subspace predictive repetitive control

open access: yesWind Energy, 2021
Individual pitch control (IPC) is an effective and widely used strategy to mitigate blade loads in wind turbines. However, conventional IPC fails to cope with blade and actuator faults, and this situation may lead to an emergency shutdown and increased ...
Yichao Liu   +5 more
doaj   +1 more source

Non-cooperative identification of civil aircraft using a generalised mutual subspace method [PDF]

open access: yes, 2016
The subspace-based methods are effectively applied to classify sets of feature vectors by modelling them as subspaces. However, their application to the field of non-cooperative target identification of flying aircraft is barely seen in the literature ...
Bravo Muñoz, Ignacio   +3 more
core   +3 more sources

Subspace Methods in System Identification

open access: yesIFAC Proceedings Volumes, 1994
Abstract Subspace-based methods for system identification have attracted much attention during the past few years. This interest is due to the ability of providing accurate state-space models for multivariable linear systems directly from input-output data.
openaire   +1 more source

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Fractional-order system identification in massive MIMO systems [PDF]

open access: yes, 2018
In wireless communications using massive multiple-input multiple-output (MIMO) channel modalities as would be required for communications with distributed sensing modalities to enable Internet of Things (IoT) connectivity, channel equalization must be ...
Hadjiloucas, S., Lupupa, M.
core   +1 more source

Algorithmic Design of Disordered Networks With Arbitrary Coordination: Application to Biophotonics

open access: yesAdvanced Functional Materials, EarlyView.
Predictive Design of Disordered Networks: Disordered network‐like morphologies are abundant in nature, from cytoskeletal networks to bone structures and chalcogenide glasses. These structures are naturally hard to characterize. A new algorithmic tool extends the established Wooten–Weaire–Winer (WWW) algorithm to valencies above 4.
Florin Hemmann   +3 more
wiley   +1 more source

Weakly symmetric stress equilibration for hyperelastic materialmodels [PDF]

open access: yes, 2019
A stress equilibration procedure for hyperelastic material models is proposed andanalyzed in this paper. Based on the displacement-pressure approximation computed with a stable finite element pair, it constructs, in a vertex-patch-wise manner, an $H(div)$
Bertrand, Fleurianne   +2 more
core   +2 more sources

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

open access: yesAdvanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin   +2 more
wiley   +1 more source

Ambient vibration re-testing and operational modal analysis of the Humber Bridge [PDF]

open access: yes, 2010
An ambient vibration survey of the Humber Bridge was carried out in July 2008 by a combined team from the UK, Portugal and Hong Kong. The exercise had several purposes that included the evaluation of the current technology for instrumentation and system ...
Abdel-Ghaffar   +43 more
core   +1 more source

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