Self-mixing digital closed-loop vibrometer for high accuracy vibration measurements

被引：35
作者：
Magnani, Alessandro [1 ]
Melchionni, Dario [1 ]
Pesatori, Alessandro [1 ]
Norgia, Michele [1 ]
机构：
[1] Politecn Milan, Informaz & Bioingn, Dipartimento Elettron, Via Ponzio 34-5, I-20133 Milan, Italy
来源：
OPTICS COMMUNICATIONS | 2016年 / 365卷
关键词：
Interferometry; Self-mixing; Vibration measurement; Optical measurement; Laser sensors; Semiconductor laser; DIODE FEEDBACK INTERFEROMETER; ABSOLUTE DISTANCE MEASUREMENT; LASER-DIODE; BLOOD-FLOW; DISPLACEMENT; VELOCIMETER; MODULATION; ARRAY;
D O I：
10.1016/j.optcom.2015.12.002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The novelty of Self-mixing interferometry is represented by the combination of high accuracy and contactless operation with compact, very-low-cost and user-friendly setup. This paper introduces state of the art techniques to monitor vibrations focusing on a novel digital feedback vibrometer. It exploits a control loop to delete interferometric signal distortion and improve measurement accuracy. A digital implementation is proposed to enhance system performances through a real-time elaboration. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：133 / 139
页数：7
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