Positional calibration of galvanometric scanners used in laser Doppler vibrometers

M. A. Stafne; Larry D. Mitchell; Robert L. West

doi:10.1117/12.307703

1 June 1998 Positional calibration of galvanometric scanners used in laser Doppler vibrometers

M. A. Stafne, Larry D. Mitchell, Robert L. West

Proceedings Volume 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1998) https://doi.org/10.1117/12.307703
Event: Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 1998, Ancona, Italy

Abstract

The knowledge of where one has measured the response of a structure is sometimes as important as the response measured. This paper describes a method for the calibration of the horizontal and vertical scanners in a laser Doppler vibrometer. The residual of the scanner position with respect to a first-order and second-order regression model will be discussed. Comparisons will be made to vendor measured scanner characteristics. Detailed analysis of the scanner calibration data will result in a very accurate knowledge of where the measured data from a structure is located and directed. Moreover, this knowledge will enhance the accuracy of 3D laser vibrometry.

Citation Download Citation

M. A. Stafne, Larry D. Mitchell, and Robert L. West "Positional calibration of galvanometric scanners used in laser Doppler vibrometers", Proc. SPIE 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (1 June 1998); https://doi.org/10.1117/12.307703

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