Results 251 to 260 of about 147,643 (299)

Contact impedance estimation for robotic systems

IEEE Transactions on Robotics, 2005
In 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, MELCHIORRI, CLAUDIO, S. STRAMIGIOLI   +2 more
openaire   +4 more sources

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, N J, Crabtree, N J, Shaw, J M W, Kirk   +3 more
openaire   +2 more sources

Smooth magnetotelluric impedance estimation by optimization

Journal of Applied Geophysics, 2023
In 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
openaire   +1 more source

Bladder volume estimation from electrical impedance tomography

Physiological Measurement, 2013
Ubiquitous 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, S, Nienke, S, Leonhardt, M, Walter   +3 more
openaire   +3 more sources

Motor temperature estimation incorporating dynamic rotor impedance

IEEE Transactions on Energy Conversion, 1991
The 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
openaire   +1 more source

Estimation of standard error of impedance‐estimated frost resistance

Scandinavian Journal of Forest Research, 1989
The magnitude of measurement errors of the specific impedance difference was estimated and a formula to approximate the variance of the estimated frost resistance was derived. The measurements of specific impedance difference include the measurement errors of impedance before and after frost treatment and cross-sectional area.
Tapani Repo, Juha Lappi
openaire   +1 more source

Impedance-effects in capacity estimation

ZOR Zeitschrift für Operations Research Methods and Models of Operations Research, 1992
Summary: Formulas for the capacity of an unsignalized intersection for traffic streams which are subordinated to two or more streams of higher priority are developed. The case of only two conflicting streams analysed by \textit{J. C. Tanner} [Biometrika 54, 657-658 (1967)] is extended.
openaire   +1 more source

Comparison of system impedance estimating methods

2011 International Conference on Advanced Power System Automation and Protection, 2011
This paper introduces and compares three impedance estimation techniques: FFT, PSD and CWT. The impedance of proposed system is calculated by using the injected step current transient and the measured voltage response. Both steady and noisy situation is simulated by Matlab/Simulink and the characteristics of each impedance analyzing method are ...
Bohan Liu, Ke Jia
openaire   +1 more source

Real Time Estimation of Battery Impedance

2006 IEEE Aerospace Conference, 2006
Electrochemical impedance measurement systems use the Bode analysis technique to characterize the impedance of an electrochemical process. It is a well established and proven technique. The battery being evaluated is excited with a current that is single frequency and its response is measured.
J.L. Morrison, W.H. Morrison
openaire   +1 more source

Impedance Estimation from Magnetic Field Measurement

60th EAGE Conference and Exhibition, 1998
In the VLF method, the ratio between the vertical and the horizontal magnetic field (the tippet) are measured to detect localized changes in electrical conductivity contrasts. The measurements themselves do not give a direct estimation of electrical conductivity contrasts.
M. Gharibi, L. B. Pedersen
openaire   +1 more source