Laser dot projection videogrammetry for vibration measurement and control of a piezoelectric flexible cantilever plate

A novel full-field non-contact vibration measurement method is investigated for a piezoelectric flexible cantilever plate, using laser dot-projection videogrammetry. Several laser dots are projected as marks for visual system. The three-dimensional coordinates of each mark are monitored by a binocul...

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Bibliographic Details
Published in:Aerospace science and technology Vol. 94; p. 105397
Main Authors: Qiu, Zhi-cheng, Wang, Tao-xian
Format: Journal Article
Language:English
Published: Elsevier Masson SAS 01.11.2019
Subjects:
Laser dot projection
Nonlinear control algorithm
Piezoelectric flexible plate
Vibration measurement
Videogrammetry
Videogrammetry
Vibration measurement
Nonlinear control algorithm
Piezoelectric flexible plate
Laser dot projection
ISSN:1270-9638, 1626-3219
Online Access:Get full text
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Summary:A novel full-field non-contact vibration measurement method is investigated for a piezoelectric flexible cantilever plate, using laser dot-projection videogrammetry. Several laser dots are projected as marks for visual system. The three-dimensional coordinates of each mark are monitored by a binocular stereo vision system, composed of two cameras. After image processing, the vibration signal of the first bending mode is obtained. For the first torsional mode, two laser displacement sensors are utilized to detect the vibration. To suppress the residual vibration quickly, an adaptive nonlinear controller and a fuzzy tuning nonlinear controller are designed and adopted. To verify the investigated measurement and control methods, experiments are conducted by using a piezoelectric flexible cantilever plate experimental platform. The experimental results demonstrate that the investigated laser dot projection measurement method is effective for first bending vibration detection. Furthermore, compared with PD control, the adopted nonlinear algorithms have better damping performance, especially for small amplitude residual vibration.
ISSN:1270-9638
1626-3219
DOI:10.1016/j.ast.2019.105397