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IEEE Transactions on Instrumentation and Measurement, 2021
Line impedance estimation provides crucial information for power-line communication (PLC), power quality estimation, and grid-connected power electronics applications. Online techniques are particularly useful as the line impedance is time-dependent. This work uses a phase-controlled switch to generate a turn-on transient, which provides information ...
Erik K. Saathoff +2 more
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Line impedance estimation provides crucial information for power-line communication (PLC), power quality estimation, and grid-connected power electronics applications. Online techniques are particularly useful as the line impedance is time-dependent. This work uses a phase-controlled switch to generate a turn-on transient, which provides information ...
Erik K. Saathoff +2 more
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Estimation of PP‐ wave ray impedance from elastic impedance
SEG Technical Program Expanded Abstracts 2011, 2011Theoretical evaluation of elastic impedance (EI) and ray impedance (RI) reveals that RI has a more reliable dimension and is less sensitive to errors than EI. In this paper, a new measurement (R I) is proposed to estimate ray impedance from the elastic impedance derived by existing techniques.
Zhang, F., Li, X.-Y., Wang, Y.
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Robust Magnetotelluric Impedance Estimation
AIP Conference Proceedings, 2010Robust magnetotelluric (MT) response function estimators are now in standard use by the induction community. Properly devised and applied, these have ability to reduce the influence of unusual data (outliers). The estimators always yield impedance estimates which are better than the conventional least square (LS) estimation because the ‘real’ MT data ...
D. Sutarno +5 more
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Estimating Cole-Impedance Parameters from Limited Frequency-Band Impedance Measurements
2021 IEEE 12th Latin America Symposium on Circuits and System (LASCAS), 2021Particle-swarm optimization is applied to estimate the parameters of 4 different Cole-impedance models using impedance measurements limited to frequencies within 1 kHz to 1 MHz, representative of typical ranges for bioimpedance applications. The accuracy of extracted parameters are compared for cases with $N$ = 201, 25, and 5 datapoints collected ...
Todd J. Freeborn, Shelby Critcher
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Contact impedance estimation for robotic systems
IEEE Transactions on Robotics, 2005In this paper, the problem of online estimation of the mechanical impedance during the contact of a robotic system with an unknown environment is considered. This problem is of great interest when controlling a robot in an unstructured and unknown environment, such as in telemanipulation tasks, since it can be easily shown that the exploitation of the ...
DIOLAITI, NICOLA +2 more
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Body Fat Estimation Using Bioelectrical Impedance
Hormone Research in Paediatrics, 2007<i>Background/Aims:</i> Although childhood obesity is a major problem, routine assessment methods do not reflect fat mass. Body mass index, which is most commonly used, gives an indication of weight for height and not a degree of adiposity. <i>Methods:</i> Bioelectrical impedance and dual-energy X-ray absorptiometry (DEXA) were ...
M G, Shaikh +3 more
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Smooth magnetotelluric impedance estimation by optimization
Journal of Applied Geophysics, 2023In urban and industrialised areas, magnetotelluric (MT) recordings often contain a significant amount of highpower near-field noise which, constituting non-Gaussian noise for most of the recording length, may lead to the failure of the common transfer functions (TF) estimation methods.
Rizzello, Daniele, Armadillo, Egidio
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Bladder volume estimation from electrical impedance tomography
Physiological Measurement, 2013Ubiquitous knowledge of bladder volume is of great interest to patients whose perception of bladder volume is impaired. A promising approach to provide frequent bladder volume estimates to the patient are automatic and noninvasive measurements by electrical impedance tomography (EIT).
T, Schlebusch +3 more
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Motor temperature estimation incorporating dynamic rotor impedance
IEEE Transactions on Energy Conversion, 1991The estimation of induction motor temperature at different system, motor, and load conditions is investigated. Motor temperature is estimated using comprehensive interactive electrical, thermal, and mechanical models. The electrical model accounts for the skin effect in the rotor bars and predicts the dynamic motor impedance as motor speed changes. The
A.H. Eltom, N.S. Moharari
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