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Luke Li

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Proceedings Article | 5 March 2018 Paper

A three-dimensional laser vibration measurement technology realized on five laser beam and its calibration

Lu-Ke Li, Shen-Feng Zhang

Proceedings Volume 10710, 107102Q (2018) https://doi.org/10.1117/12.2315330

KEYWORDS: Laser applications, 3D metrology, Sensors, Doppler effect, Vibrometry, Calibration, Error analysis, Laser interferometry, Signal processing, 3D acquisition

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Put forward a kind of three-dimensional vibration information technology of vibrating object by the mean of five laser beam of He-Ne laser, and with the help of three-way sensor, measure the three-dimensional laser vibration developed by above mentioned technology. The technology based on the Doppler principle of interference and signal demodulation technology, get the vibration information of the object, through the algorithm processing, extract the three-dimensional vibration information of space objects, and can achieve the function of angle calibration of five beam in the space, which avoid the effects of the mechanical installation error, greatly improve the accuracy of measurement. With the help of a & B K4527 contact three axis sensor, measure and calibrate three-dimensional laser vibrometer, which ensure the accuracy of the measurement data. Summarize the advantages and disadvantages of contact and non-contact sensor, and analysis the future development trends of the sensor industry.

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