A Self-Mixing Laser Sensor Design With an Extended Kalman Filter for Optimal Online Structural Analysis and Damping Evaluation

Author

Bés, Caroline ; Belloeil, Victorien ; Plantier, Guy ; Gourinat, Yves ; Bosch, Thierry

Author_Institution

ENSEEIHT-LEN7, Toulouse

Volume

12

Issue

3

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

387

Lastpage

394

Abstract

We have developed a new algorithm based on the extended Kalman filter in order to improve the resolution of a self-mixing (SM) optical displacement sensor. This noncontact sensor, which provides vibration measurement with a very high accuracy, can be used for online quality control, for example, measuring the damping of excited mechanical structures. This SM sensor subject to weak feedback has been tested in comparison with a commercial vibrometer in order to measure the frequency response function (FRF) of a plate with a passive damping to be characterized, and to show the efficiency of a damping treatment.

Keywords

Kalman filters; damping; optical sensors; vibration measurement; extended Kalman Filter; frequency response function; noncontact sensor; optical displacement sensor; optimal online structural analysis; passive damping; self-mixing laser sensor; vibration measurement; vibrometer; Damping; Mechanical sensors; Mechanical variables measurement; Optical design; Optical feedback; Optical filters; Optical sensors; Quality control; Samarium; Vibration measurement; Displacement sensors; extended Kalman filter; optical interferometry; structural analysis; vibration measurement;

fLanguage

English

Journal_Title

Mechatronics, IEEE/ASME Transactions on

Publisher

ieee

ISSN

1083-4435

Type

jour

DOI

10.1109/TMECH.2007.897287

Filename

4244370