锁相式莫尔条纹信号细分方法  

Interpolation method of phase-locking Moire fringe

作　　者：郭雨梅[1] 崔晋玲[1] 刘雪艳[1] 金喜平[1] 

机构地区：[1]沈阳工业大学信息科学与工程学院,沈阳110023

出　　处：《哈尔滨工业大学学报》2007年第9期1496-1498,1512,共4页Journal of Harbin Institute of Technology

基　　金：辽宁省自然科学基金资助项目(20062043);辽宁省科技攻关资助项目(2006219005);辽宁省教育厅科研资助项目(20060629)

摘　　要：简要论述了研究光栅莫尔条纹信号细分方法的意义,介绍了传统的细分方法,对常用的直接细分法、移相电阻链法、幅值分割法、鉴相细分法等的基本原理及主要优缺点进行了分析对比,阐述了传统的锁相细分原理不能直接用于光栅莫尔条纹信号细分技术中的原因,提出新的锁相式莫尔条纹信号细分方法,给出具体的推导过程,论述了该方法的特点,在不需要独立辨向电路的前提下,实现了细分与辨向的统一,为光栅数显装置实现高精度、高分辨率和数字集成化奠定了基础.The research purpose of the Moire fringe interpolation method of grating sensor was introduced briefly. The basic principle and main merits and demerits of conventional interpolation methods such as direct interpolation, phase-shifting resister chain method, magnitude division method, phase-detection method and etc were analyzed and compared. The reason why the conventional phase-locking interpolation methods can not be used in grating Moire fringe interpolation was explained. A novel phase-locking Moire fringe interpolation method was proposed, and the derivation process and the traits of this method were given in detail. This method can obtain the unification of interpolation and direction discrimination without separate direction discrimination circuit. This method establishes the base of the implement of high precision, high resolution and digital integrated grating digital display device division.

关 键 词：锁相 莫尔条纹 细分 光栅传感器 相位调制 

分 类 号：TH741.6[机械工程—光学工程]