System Parameter Estimation for a Laser-Speckle Strain Gauge

Author

Kothbauer, Roland ; Rupitsch, Stefan J. ; Zagar, Bernhard G.

Author_Institution

Johannes Kepler Univ., Linz

fYear

2007

fDate

1-3 May 2007

Firstpage

1

Lastpage

6

Abstract

In this paper a specific arrangement for an interferometric laser-speckle gauge is suggested. The geometrical parameter of the set-up are determined by a grid search over the viable set to minimize the impact of deviations of the geometrical parameter. Furthermore, we suggest a linear unbiased minimum variance estimator for measuring an applied measurand vector to the observed specimen. Measurement results using this estimator are shown for a particular measurement set-up of the laser-speckle gauge.

Keywords

measurement by laser beam; parameter estimation; speckle; strain gauges; grid search; interferometric laser speckle strain gauge; linear unbiased minimum variance estimator; system parameter estimation; Actuators; Capacitive sensors; Laser beams; Mechanical sensors; Optical materials; Optical sensors; Parameter estimation; Particle measurements; State estimation; Strain measurement; Taylor approximation; laser-speckle gauge; material testing; unbiased minimum variance estimator;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. IEEE

Conference_Location

Warsaw

ISSN

1091-5281

Print_ISBN

1-4244-0588-2

Type

conf

DOI

10.1109/IMTC.2007.379099

Filename

4258390