Results 11 to 20 of about 148,448 (274)
An Effective Acoustic Impedance Imaging Based on a Broadband Gaussian Beam Migration
Energies, 2021 The estimation of the subsurface acoustic impedance (AI) model is an important step of seismic data processing for oil and gas exploration. The full waveform inversion (FWI) is a powerful way to invert the subsurface parameters with surface acquired ...
Shaoyong Liu +4 more
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Estimates of Acausal Joint Impedance Models [PDF]
IEEE Transactions on Biomedical Engineering, 2012 Estimates of joint or limb impedance are commonly used in the study of how the nervous system controls posture and movement, and how that control is altered by injury to the neural or musculoskeletal systems. Impedance characterizes the dynamic relationship between an imposed perturbation of joint position and the torques generated in response.
David T, Westwick, Eric J, Perreault
openaire +2 more sources
Energy Conversion and Economics, 2022 In an islanded microgrid (IMG), droop control effectively shares real and reactive power demands among distributed generators (DGs), thereby regulating the frequency and voltage in high X/R ratio networks.
Muli Malakondaiah +3 more
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Direction-of-arrival estimation with blind surface impedance compensation for spherical microphone array [PDF]
JASA Express Letters, 2021 The direction-of-arrival (DoA) estimation from spherical microphone array data requires mode strength compensation for removing the dependency on the array surface impedance.
Dongheon Lee, Byeongho Jo, Jung-Woo Choi
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矿业科学学报, 2022 Magnetic remote-reference is the most practical noise suppression method in magnetotelluric data processing.In actual audio-frequency magnetotelluric (AMT) sounding observation, usually the "one with three" or "one with four" acquisition method is used ...
Ma Fangyuan +5 more
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Assessment on Harmonic Emission Level of Residential Loads with Symmetry and Volatility Constraints
Zhongguo dianli, 2020 The accuracy of harmonic emission level assessment of residential loads is affected by background harmonics or three-phase harmonic unbalance. Based on Norton’s and Davinan’s theorem, a model is constructed for assessment of harmonic emission level.
Huaying ZHANG +5 more
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Responsive and Resilient Vector Current Control for Variable Grids
IEEE Open Journal of Power Electronics, 2023 This article presents a set of control enhancements for standard vector current control (VCC) that improves its stability and dynamic performance in an extended range of SCRs.
Mathieu Kervyn de Meerendre +2 more
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IEEE Access, 2022 Grid impedance plays a significant role in the performance and design considerations of nonlinear devices like Variable Frequency Drive (VFD). VFD operates across domestic, industrial, and residential applications under different grid configurations and ...
Ramesh Pandurangan +2 more
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Seismic Ray Impedance Inversion [PDF]
, 2010 This thesis investigates a prestack seismic inversion scheme implemented in the ray parameter domain. Conventionally, most prestack seismic inversion methods are performed in the incidence angle domain.
Lu, Xiaolin, Lu, Xiaolin
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Observer techniques for estimating the state-of-charge and state-of-health of VRLABs for hybrid electric vehicles [PDF]
, 2005 The paper describes the application of observer-based state-estimation techniques for the real-time prediction of state-of-charge (SoC) and state-of-health (SoH) of lead-acid cells.
Bentley, P +3 more
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