| 双精度数字散斑振动测量系统 |
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| 引用本文： | 贾书海,乐开端,赵宏,谭玉山. 双精度数字散斑振动测量系统[J]. 西安交通大学学报, 2000, 34(9): 72-76 |
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| 作者姓名： | 贾书海 乐开端 赵宏 谭玉山 |
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| 作者单位： | 西安交通大学,710049,西安 |
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| 基金项目： | 国家自然科学基金资助项目!(5990 50 2 0 ) |
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| 摘 要： | 给出了一种双精度数字散班振动测量系统。该系统结合了普通数字散斑离面振动测量光路和退敏感光路，可以对物体的振动进行高精度和低精度２次测量，并利用低精度的测量结果对高精度的测量结果进行相位去包裹。由于这种去包裹方法是各点独立进行的，使得该系统可以测量工程实际中复杂的非连续体的振动。
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| 关 键 词： | 数字散斑 相位去包裹 精度 振动测量系统 |
High/Low-Precision Digital Speckle Pattern Interferometry for Vibration Measurement |
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| Jia Shuhai,Yue Kaiduan,Zhao Hong,Tan Yushan. High/Low-Precision Digital Speckle Pattern Interferometry for Vibration Measurement[J]. Journal of Xi'an Jiaotong University, 2000, 34(9): 72-76 |
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| Authors: | Jia Shuhai Yue Kaiduan Zhao Hong Tan Yushan |
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| Abstract: | High/low precision digital speckle pattern interferometry (DSPI) is proposed for measuring vibration. The system combines the common DSPI optical path for measuring out plane vibration and the de sensitized optical path. High and low precision measurements are made such that the wrapped phase map obtained with high precision can be unwrapped according to that for the low precision. Effectiveness of the unwrapping procedure at the discontinuous area made it possible to analyze the vibration characteristics of complex and discontinuous structure for engineering application. |
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| Keywords: | digital speckle pattern interferometry (DSPI) vibration measurement phase shifting phase unwrapping |
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