电子器件2018，Vol.41Issue(2)：405-410,6.DOI:10.3969/j.issn.1005-9490.2018.02.025
实时扰动频率控制的自适应陷波器研究
Adaptive Notch Filter with Real Time Disturbance Frequency Control
摘要
Abstract
In view of the characteristics of power-line interference frequency fluctuation between 49 Hz~51 Hz and non transient,traditional adaptive notch filter has the problem of low accuracy. FFT transform method is used to extract the power frequency interference frequency,and zero compensation method is used to improve the real-time performance of system in the premise of ensuring the accuracy. The extreme value of the FFT transform results is obtained by using the falling edge detection on FPGA,then interference frequency was fitted by ranking method. The design of real time control based on disturbance frequency adaptive notch filter,change adaptive notch filter notch frequency online,real-time compensation of interference frequency change. The results show that real-time adaptive disturbance frequency control of notch filter,can better remove the 49 Hz~51 Hz range of power frequency interference,improve the filtering performance.关键词
自适应陷波器/工频干扰/快速傅立叶变换/FPGAKey words
adaptive notch filter/power-line interference/FFT/FPGA分类
信息技术与安全科学引用本文复制引用
王宇,应启瑞,雷宇,王东,靳宝全..实时扰动频率控制的自适应陷波器研究[J].电子器件,2018,41(2):405-410,6.基金项目
国家自然科学基金项目(51375327,51504161) （51375327,51504161）
山西省应用基础研究项目(201701D221115)山西省回国留学人员科研项目(2016-035) （201701D221115）
山西省煤基重点科技攻关项目(MQ2014-09) （MQ2014-09）
