Results 251 to 260 of about 158,369 (273)
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Fast summation transformation for battery impedance identification
2009 IEEE Aerospace conference, 2009A battery is an important subsystem for electrical energy storage in many military, space and commercial applications. Consequently, in-situ diagnostics for state-of-health estimation of the battery is also critical for enhancing the overall applications' reliability.
John L. Morrison +6 more
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Nonsmooth impedance profile identification using reflection data
The Journal of the Acoustical Society of America, 1997Many works published about identification of acoustic properties of inhomogeneous media present methods based on the assumption that these properties vary smoothly along the propagation direction. This work presents a comparison between two time-domain sequential inverse methods for evaluation of either smooth or nonsmooth impedance profiles of ...
Marcelo Magalhaes, Roberto Tenenbaum
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High-Impedance Fault Identification on Distribution Networks
IEEE Transactions on Power Delivery, 2017This paper presents a transient-based algorithm for high-impedance fault identification on distribution networks. It uses the discrete wavelet transform to monitor high- and low-frequency voltage components at several points of the power system, being able to indicate the most likely area within which the disturbance has occurred, without requiring ...
W. C. Santos +3 more
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Impedance-Based Method for Nondestructive Damage Identification
Journal of Engineering Mechanics, 2005A structural damage identification technique based on the impedance method is presented in this paper using smart piezoelectric transducer (PZT) patches. A modeling framework is developed to determine the structural impedance response and the dynamic output forces of PZT patches from the electric admittance measurements.
Kevin K. Tseng, Liangsheng Wang
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Experimental crack identification using electrical impedance tomography
NDT & E International, 2002Abstract This paper addresses the problem of practical crack identification in electrically conducting specimens using only boundary measurements. The method is commonly referred to in the literature as Electrical Impedance Tomography (EIT). Crack identification is determined from the electrical impedance distribution, which amounts to solving an ...
R. Lazarovitch, D. Rittel, I. Bucher
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Transmission Line Identification via Impedance Inhomogeneity Pattern
IEEE Journal of Radio Frequency Identification, 2019This paper reports a new physical unclonable function (PUF) technology, namely, transmission line (TX-Line) PUF. We experimentally showed that using the intrinsic impedance inhomogeneity pattern, variation of characteristic impedance over distance, of any TX-Line, one can identify the TX-Line with high verification accuracy. The TX-Line PUF information
Tao Wei, Jie Huang
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Electromechanical Impedance Based Part Identification via Linear Projection
ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, 2023Abstract The geographical separation between various supply chain participants creates challenges in ensuring the integrity of the parts under circulation. These supply chains have to regularly deal with counterfeiting, a significant problem with an estimated value equivalent to at least the tenth-largest global economy.
Sourabh Sangle, Pablo Tarazaga
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Identification of soil properties from foundation impedance functions
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1992This study evaluates the possibility of using experimentally determined foundation impedance functions to infer the dynamic properties of the underlying soil deposit. It evaluates a previously proposed method to identify soil properties from results of forced vibration tests of foundations.
J. E. Luco, H. L. Wong
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Impedance identification in a hydrodynamically developed flow
International Journal of Thermal Sciences, 2019Abstract This paper is an extension of the previous work by Degiovanni & Remy (2014) [1], where it was analytically demonstrated that the appropriate representation of interfacial heat transfer consists in defining a generalized impedance Z . The latter is intrinsic to the flow and does not depend on the thermal boundary conditions.
El Maakoul, Anas, Degiovanni, Alain
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High Impedance Fault Identification Method of Distribution Networks
Advanced Materials Research, 2012Abstract. High impedance fault has always been difficult for distribution network fault identification due to its unobvious fault signature and difficult detection. This paper decomposed the transient signal in multi-scale by utilizing the good localization performance of the wavelet in both time domain and frequency domain, reconstructed the wavelet ...
Yong Huang +3 more
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