基于条纹丢失补偿的自混合干涉位移测量算法  

A Self-Mixing Interference Displacement Measurement Algorithm with Fringe-Loss Phenomenon and Compensation

作　　者：叶会英[1] 朱君瑶 王珍雪 

机构地区：[1]郑州大学信息工程学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2014年第6期56-59,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(60871031)

摘　　要：自混合干涉位移传感测试系统在高反馈水平因子条件下会出现条纹丢失现象,若不加以补偿则将降低位移测量精度.基于Lang-Kobayashi方程,研究外部物体做周期运动时在高反馈水平因子条件下自混合干涉条纹丢失现象,得出反馈水平因子C和半个周期内条纹丢失数目m之间的规律为:C<4.6,m=0;4.6≤C<4.8,m=1;4.8≤C<7.9,m=2;并设计基于条纹丢失补偿的自混合干涉位移测量算法,以提高位移测量精度.The disappearance of self - mixing interference fringes in the high feedback-regime decreases the displacement measurement accuracy. The proposed method based on Lang-Kobayashi equation detects the fringe-loss with a large optical feedback factor C. And the relationship between C and m which represents the number of fringe-loss in half cycle is obtained ： C 〈 4.6, m = 0 ;4.6 ≤ C 〈 4. 8, m = 1 ;4.8≤ C 〈 7.9, m = 2. A self-mixing interference displacement measurement algorithm is presented that is able to remedy the influence of fringe-loss. The measurement accuracy is improved greatly.

关 键 词：位移测量 Lang-Kobayashi方程 高反馈水平因子 条纹丢失补偿 

分 类 号：TN249[电子电信—物理电子学]