Title :
Parameter estimation using an interdigital dielectrometry sensor with finite-element software
Author :
Mamishev, Alexander V. ; Lesieutre, B.C. ; Zahn, A.V.
Author_Institution :
Dept. of Electr. & Comput. Sci., Massachusetts Univ., Cambridge, MA, USA
Abstract :
A real-time software algorithm for calculating dielectric permittivity and conductivity of nondispersive and frequency dispersive insulating materials on the basis of non-destructive measurements is presented. First, the measured response of the interdigital dielectrometry sensor is simulated off-line with two-dimensional finite-element software over the entire range of input parameters. Then, experimental data points are interpolated and material properties are determined without iterative on-line calculations. Offline simulation lends valuable insights into sensitivity of the measurement and the uniqueness of the solution to the inverse problem of material characterization
Keywords :
electrical conductivity measurement; electrometers; finite element analysis; insulation testing; interdigital transducers; inverse problems; parameter estimation; permittivity measurement; conductivity; dielectric permittivity; finite-element software; frequency dispersive insulating materials; input parameters; interdigital dielectrometry sensor; inverse problem; material characterization; nondispersive insulating materials; parameter estimation; Conducting materials; Conductivity; Dielectric measurements; Dielectrics and electrical insulation; Dispersion; Frequency; Parameter estimation; Permittivity measurement; Software algorithms; Software measurement;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-7803-3851-0
DOI :
10.1109/CEIDP.1997.634602
