Identification of transfer functions with time delay and its application to cable fault location

Author

Pintelon, R. ; Van Biesen, L.

Author_Institution

Dept. ELEC, Vrije Univ. Brussel, Belgium

Volume

39

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

479

Lastpage

484

Abstract

A Gaussian frequency-domain maximum likelihood estimator (MLE) to estimate the transfer function of linear continuous-time systems with time delay is presented. The stochastic framework is an errors-in-variables model, which means that the input as well as the output of the system is disturbed with noise. The estimator is applied to a practical measurement problem, namely the estimation of the location of discontinuities, e.g. faults in electrical cables from a reflectogram. Experimental results for coaxial lines show that it is possible to identify simultaneously the location of the discontinuity and a rational approximation of the generator mismatch, the fault impedance, and some of the cable parameters

Keywords

coaxial cables; delays; estimation theory; fault location; random noise; stochastic processes; time-domain reflectometry; transfer functions; Gaussian frequency-domain maximum likelihood estimator; cable fault location; coaxial lines; discontinuities; discontinuity; errors-in-variables model; fault impedance; linear continuous-time systems; mismatch; reflectogram; time delay; time domain reflectometry; transfer functions; Coaxial cables; Delay effects; Delay estimation; Electric variables measurement; Fault diagnosis; Frequency estimation; Maximum likelihood estimation; Stochastic resonance; Stochastic systems; Transfer functions;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.106276

Filename

106276