Title :
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
fDate :
6/1/2007 12:00:00 AM
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;
Journal_Title :
Mechatronics, IEEE/ASME Transactions on
DOI :
10.1109/TMECH.2007.897287