基于模拟锁相的工频正弦基波信号生成方法  

The Generated Method of Fundamental Power Frequency Sine Signal Based Analog Phase-Locked Loop

作　　者：徐杰[1] 张胜发[2] 

机构地区：[1]空军雷达学院研究生管理大队,湖北武汉430019 [2]空军雷达学院三系,湖北武汉430019

出　　处：《电气电子教学学报》2010年第B10期169-171,共3页Journal of Electrical and Electronic Education

摘　　要：为了从电网信号中获取工频基波正弦信号，本文在模拟锁相环的基础上利用EPROM存储和D／A转换的特性将包含工频信息的数字信号成功转换成所需的工频模拟正弦信号。运用单边控制的下降沿施密特触发器消除电网电压波形的畸变对锁相环的干扰，通过对EPROM特别设计的地址控制，保证了输出工频正弦信号与电网基波精确同相。最后通过试验得到了相关波形，经过比较分析验证了设计的可行性。In order to obtain power frequency sine signal from grid signal, this paper transforms digital signals which contain grid information to analog signals using the qualities of EPROM and D/A based on the analog phase-locked loop triumphantly. The circuit uses inverse Schmitt trigger to avoid wave aberranceset and interference problem in PLL, by controlling the addressline which is setting specially for EPROM,the system ensures that the output analog sine wave and the basic wave in grid have the same frequency and phase. Finally, the related waveform is obtained through experimentation which verified the feasibility by compare and analysis.

关 键 词：模拟锁相环 工频 正弦信号 抗干扰 补偿 

分 类 号：TN911.7[电子电信—通信与信息系统]