Micro-vibration parameters fast demodulation algorithm and experiment of self-mixing interference

Self-mixing interference （SMI） technique can be used for measuring vibration, displacement, velocity and absolute distance. In this paper, a simple demodulation algorithm for fast measuring frequency and amplitude of a simple harmonic vibration target is proposed based on the basic theoretical model...

Full description

Saved in:
Bibliographic Details
Published inOptoelectronics letters Vol. 10; no. 4; pp. 304 - 307
Main Author 王秀琳 王路 陈敏亮 黄文财
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.07.2014
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
实验系统
微振动
最大误差
测量频率
简谐振动
绝对距离
自混合干涉效应
解调算法
Vibration Parameter
External Object
Reverse Point
Vibration Displacement
Optical Feedback
Online AccessGet full text

Cover

More Information
Summary:Self-mixing interference （SMI） technique can be used for measuring vibration, displacement, velocity and absolute distance. In this paper, a simple demodulation algorithm for fast measuring frequency and amplitude of a simple harmonic vibration target is proposed based on the basic theoretical model of self-mixing interference effects. The simulative results show that the error between the vibration parameters which are demodulated by this algorithm and initial settings merely results from the sample rate. Further, the experimental system of self-mixing vibration measurement is built. The experimental results have a good agreement with simulation analyses. The maximum error of frequency demodulation is less than 1 Hz in our experiment.
Bibliography:Self-mixing interference （SMI） technique can be used for measuring vibration, displacement, velocity and absolute distance. In this paper, a simple demodulation algorithm for fast measuring frequency and amplitude of a simple harmonic vibration target is proposed based on the basic theoretical model of self-mixing interference effects. The simulative results show that the error between the vibration parameters which are demodulated by this algorithm and initial settings merely results from the sample rate. Further, the experimental system of self-mixing vibration measurement is built. The experimental results have a good agreement with simulation analyses. The maximum error of frequency demodulation is less than 1 Hz in our experiment.
12-1370/TN
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-014-4059-x