Results 31 to 40 of about 3,470,000 (296)

Passiv damping on spacecraft sandwich panels [PDF]

, 2007
For reusable and expendable launch vehicles as well as for other spacecraft structural vibration loads are safety critical design drivers impacting mass and lifetime. Here, the improvement of reliability and safety, the reduction of mass, the extension
Romberg, Oliver, Tausche, M., Pereira, C., Panning, L.   +3 more
core  

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Peripheral Neutrophil Activation and Extracellular Trap Formation in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
Markers of neutrophil activation are increased in plasma during ALS, and markers of NET formation associate with ALS survival. ABSTRACT Objectives Peripheral neutrophil levels in amyotrophic lateral sclerosis (ALS) inversely correlate with survival, suggesting a role for neutrophils in disease progression.
Lillia A. Baird, Haley McQuown, Jihyun Park, Samuel J. Teener, Ian F. Webber‐Davis, Andrew D. Carter, Dae‐Gyu Jang, Eva L. Feldman, Stephen A. Goutman, Benjamin J. Murdock   +9 more
wiley   +1 more source

Wide‐Band Harmonic Resonance Damping Strategy for Grid‐Connected Digitally Controlled LCL‐Type Inverter

IET Power Electronics
Digitally controlled LCL‐type inverter is widely applied in grid‐connected renewable energy generation system, and its harmonics resonance damping performance is critical to the stable operation and output power quality of system.
Jinhong Liu, Xiaobing Zhang, Baohua Wang
doaj   +1 more source

A novel robust active damping control strategy based on H∞ loop shaping for the grid-tied LCL inverter

Frontiers in Energy Research
LCL-type grid-connected inverters have been widely used in renewable power generation due to their size and cost advantages. However, the LCL filter has a problem of insufficient damping, which may lead to power system instability. Two common methods are
Wenju Sang, Wenju Sang, Wenyong Guo, Gang Xu, Tongzhen Wei, Tongzhen Wei, Changli Shi, Changli Shi, Zongjie Liu, Han Xue, Zhenning He, Junzhi Li, Jiazhen Shen, Ruiqi Min, Shaobo Song, Xiaoxu Li, Yun Hong   +16 more
doaj   +1 more source

Active-Reactive Additional Damping Control of a Doubly-Fed Induction Generator Based on Active Disturbance Rejection Control

Energies, 2018
Large-scale wind power interfacing to the power grid has an impact on the stability of the power system. However, with an additional damping controller of the wind generator, new ways for improving system damping and suppressing the low frequency ...
Yanfeng Ma, Jia Liu, Haihang Liu, Shuqiang Zhao   +3 more
doaj   +1 more source

Hydraulic Active Damping System [PDF]

, 2018
Hydraulic Active Damping SystemHydraulic Active Damping ...
Bindiganavile Venkatesh Ashrith
core  

Effects of Damping and Reynolds Number on Vortex-Induced Vibrations [PDF]

, 2007
Vortex-induced vibrations have been studied experimentally with emphasis on damping and Reynolds number effects. Our system was an elastically-mounted rigid circular cylinder, free to oscillate only transverse to the flow direction, with very low ...
Klamo, Joseph Thomas
core   +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

Resonance Suppression Method Based on Virtual Filter for Grid-Following and Grid-Forming Converter Interconnected Systems

Applied Sciences
With the advancement of power electronics technology, converters achieve compactness and high power density by increasing switching frequency and reducing passive components.
Lei Zhang, Guoju Zhang, Xu Liu, Peng Yang, Wei Pei   +4 more
doaj   +1 more source