基于FPGA的增量型光电编码器抗抖动二倍频电路设计  

Anti-jitter Frequency Second Harmonic Circuit of Increment Type Photoelectric Encoder Based on FPGA

作　　者：王俊山[1] 程明[1] 白小营[1] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001

出　　处：《现代电子技术》2010年第9期157-159,共3页Modern Electronics Technique

摘　　要：从增量型光电编码器的构造特点出发,分析其输出信号中引起抖动误码脉冲的原因。根据编码器两相输出信号(A相、B相)不能同时跳变的特点,设计了一种高精度抗抖动二倍频电路,能有效滤除信号的干扰脉冲。According to the characteristics of the increment type photoelectric encoder′s construction,the reasons of the error encoder pulse caused by jitter in the output signals are analyzed,a high-precision anti-jitter second harmonic circuit was designed according to the characteristics that the two output signals（A-phase,B phase） of the encoder can not change at the same time.In this way,the interference pulse signal can be filtered out effectively.

关 键 词：光电编码器 二倍频 抗抖动 FPGA 

分 类 号：TN15[电子电信—物理电子学]