传感技术学报2016，Vol.29Issue(6)：846-853,8.DOI:10.3969/j.issn.1004-1699.2016.06.010
一种基于FPGA的光栅信号细分方法
A Grating Signal Segmentation Method Based on FPGA
摘要
Abstract
A grating signal segmentation and the direction based on FPGA are adopted in the high precision mea⁃surement,in order to improve the accuracy of the grating segmentation. Firstly,Matlab is used for analysis two origi⁃nal signals and filtered and the filtered DC component of the signal characteristics output from the read head.The feasibility of 1024 subdivision algorithm implementation and hardware circuit are verified,according to structure subdivision algorithm,the grating signal is subdivided and identified direction. Tessellation hardware circuit is di⁃vided into 8 sub-division circuit.Which is 8 segmentation in each cycle of one main signal.Mainly,the accurate cir⁃cuit handles the eight cycle of each signal segment.The results of the test show that the subdivision circuit achieve the 1024 subdivision of the grating,and the high-powered subdivision purpose.关键词
FPGA/光栅信号/测量/细分/辨向Key words
FPGA/grating signal/measurement/subdivision/identify the direction分类
信息技术与安全科学引用本文复制引用
丁旭,李彬华,杨晓晗..一种基于FPGA的光栅信号细分方法[J].传感技术学报,2016,29(6):846-853,8.基金项目
国家自然科学基金天文联合项目 （）
