Results 51 to 60 of about 5,624,947 (339)

Model Predictive Control of a Wave Energy Converter with Discrete Fluid Power Power Take-Off System

Energies, 2018
Wave power extraction algorithms for wave energy converters are normally designed without taking system losses into account leading to suboptimal power extraction.
Anders Hedegaard Hansen, Magnus F. Asmussen, Michael M. Bech   +2 more
doaj   +1 more source

Research on vibration reduction performance of dynamic vibration absorber based on damping characteristic of a new material

Advances in Mechanical Engineering, 2020
The absorbing effect of traditional dynamic vibration absorber (TDVA) is satisfactory only when the natural frequency is close to the excitation frequency.
Weizhi Song, Zhien Liu, Chihua Lu, Yongchao Li, Bin Li   +4 more
doaj   +1 more source

Correlations between O VI Absorbers and Galaxies at Low Redshift

, 2008
We investigate the relationship between galaxies and metal-line absorption systems in a large-scale cosmological simulation with galaxy formation. Our detailed treatment of metal enrichment and non-equilibrium calculation of oxygen species allow us, for ...
Cen, Cen, Cen, Cen, Davé, Davé, Eisenstein, Fox, Fukugita, Kenneth Sembach, Lehner, Prochaska, Rajib Ganguly, Renyue Cen, Sembach, Shull, Stocke, Stocke, Taotao Fang, Tripp, Tripp, Zel'dovich   +21 more
core   +1 more source

Real-Time Model Predictive Control Framework for a Point Absorber Wave Energy Converter With Excitation Force Estimation and Prediction

IEEE Access
This study focuses on real-time model predictive control (MPC) implementation for a point-absorber-type wave energy converter (WEC) to achieve maximum wave power extraction.
Abdin Y. Elamin, A. Wahyudie, Tuanku Badzlin Hashfi, Hussain Shareef, R. Errouissi, M. Laghari, M. Mubin, S. Mekhilef   +7 more
semanticscholar   +1 more source

Brock's approaching zero method improved as approaching fixed point frequency to solve optimum damping ratio of dynamic vibration absorber in machine tools and experimental confirmation.

PLoS ONE
The design parameters of the dynamic vibration absorber significantly affect the motion performance of the main vibration system. The Brock's approaching zero method was improved as approaching the fixed point frequency method.
Hongliang Tian, Xixiao Liang, Xuan Du
doaj   +1 more source

Wave Energy Assessment along Sicilian Coastline, Based on DEIM Point Absorber

Energies, 2017
The use of renewable energy sources is one of the most relevant goals to be achieved in order to match the climate protection targets. As a case study, the paper shows the current electrical energy production by sources in the Sicilian context. Among the
Vincenzo Franzitta, Pietro Catrini, Domenico Curto   +2 more
doaj   +1 more source

Comparison of Wave Energy Park Layouts by Experimental and Numerical Methods

Journal of Marine Science and Engineering, 2020
An experimental campaign of arrays with direct-driven wave energy converters of point-absorbing type is presented. The arrays consist of six identical floats, moving in six degrees of freedom, and six rotating power take-off systems, based on the design ...
Marianna Giassi, Jens Engström, Jan Isberg, Malin Göteman   +3 more
doaj   +1 more source

On the Origin of the Clustered QSO Metal Absorption Lines [PDF]

, 1995
Observations show that there is significant clustering of QSO metal absorption lines within the range of velocity dispersion between 200km/sec and 600 km/sec.
Shi, Xiangdong
core   +3 more sources

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Energies, 2017
The aim of this work is to explore the possibility of transitioning a fuel powered island to a renewable powered one. This transition is analyzed for the real MV/LV distribution system of the island of Pantelleria, in the Mediterranean Sea. Particularly,
Vincenzo Franzitta, Domenico Curto
doaj   +1 more source