电能计量中IIR数字滤波器的FPGA设计

The design and implementation of IIR digital filter based on FPGA applied in electric energy measurement

结合一个在电网中的实际应用——电能计量,实现了基于FPGA的IIR高通数字滤波器。利用Matlab工具软件(FDA-Tool\sptool)设计出符合应用要求的IIR滤波器,进行系数量化后给出硬件电路实现方案,用VHDL语言加以描述,编译仿真之后在Altera公司的Cyclone系列FPGA芯片EP1C6Q240C8上完成了硬件实现。此设计扩展性好,响应速度快,精度高,完全满足电能计量应用的要求。

This article implement IIR high pass digital filter based on FPGA in a electric application electric energy measurement. Design IIR filter which is up to the mustard using Matlab tools （FDATool／sptool）,quantify the coefficient and make the hardware circuit project, then describe by VHDL. Achieve hardware debugging on FPGA chip EP1C6Q240C8 of corp Ahera＇s Cyclone series.This project has good expansibility, fast response and high precision,it can absolutely meet the requirement of electric energy measurement.