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用Fourier变换莫尔法测量流体自由表面微幅波的振幅
Alternative TitleFourier Transform Method for Measuring the Micro Amplitudes of Water Surface Waves
王薇; 倪刚; 鄂学全
Source Publication实验力学
2002-12-30
Volume17Issue:4Pages:425-432
Abstract采用一种非接触的光学方法——傅立叶变换莫尔法(Fourier transform method),结合数字图像处理技术,对微幅振荡的水表面波的振幅进行测量。它是对全场中每一个像素点进行测量,比接触测量法具有更高的灵敏度。它为微幅水表面波振幅的测量提供了一种手段。通过将计算机生成的周期性光栅图像经投影机直接投影到被测物体的参考平面,经CCD摄像头、图像板捕捉存储形成数字化的光栅图像,利用傅立叶变换莫尔法处理光栅图像,从而获得包含有水表面波的振幅的相位信息,再经适当的几何变换获得振幅信息。我们在生趣振荡装置上进行了不同激励频率和不同振幅的表面波的振幅测量。
Keyword垂直振荡 水表面波 傅立叶变换莫尔法 条纹 图像处理
Indexed ByCSCD
Language中文
Funding Organization国家自然科学基金资助项目(19972068)
CSCD IDCSCD:1068214
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/42042
Collection力学所知识产出(1956-2008)
Corresponding Author王薇
Recommended Citation
GB/T 7714
王薇,倪刚,鄂学全. 用Fourier变换莫尔法测量流体自由表面微幅波的振幅[J]. 实验力学,2002,17(4):425-432
APA 王薇,倪刚,&鄂学全.(2002).用Fourier变换莫尔法测量流体自由表面微幅波的振幅.实验力学,17(4),425-432.
MLA 王薇,et al."用Fourier变换莫尔法测量流体自由表面微幅波的振幅".实验力学 17.4(2002):425-432.
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