激光技术Issue(4)：446-449,4.DOI:10.7510/jgjs.issn.1001-3806.2015.04.003
基于结构光投影的薄膜振动模式分析
Analysis of membrane vibration modes based on structured light projection
冯伟 1张启灿1
作者信息
- 1. 四川大学电子信息学院光电系，成都610064
- 折叠
摘要
Abstract
In order to verify membrane vibration modes , sinusoidal fringe projecting and Fourier fringe analysis were used in membrane vibration mode analysis and amplitude reconstruction .After theoretical analysis and experimental verification, among 3-D automatic sensor technologies based on structured light , Fourier transform profilometry (FTP) with the advantages of single-frame capture, high resolution and real-time measurement became the practical method in dynamic three-dimensional shape measurement .A sequence of the deformed and partly blurred sinusoidal fringe images on the surface of a vibrating membrane was grabbed by a low sampling rate CCD camera .By FTP, the actual experimental results of membrane vibration modes at different frequencies were obtained .The theoretical vibration results and the vibration measurement results were compared .The results show that the vibration modes reflect the vibrating membrane accurately . The results of 3-D surface shape measurement and actual experiments give the verification of its validity .关键词
信息光学/振动测量/振动模式分析/结构光投影/傅里叶频谱Key words
information optics/vibration measurement/vibration mode analysis/structured light projection/Fourier spectrum分类
数理科学引用本文复制引用
冯伟,张启灿..基于结构光投影的薄膜振动模式分析[J].激光技术,2015,(4):446-449,4.
