IIR低通滤波器在谐波监测中的应用  

Application of IIR Low-pass Filters for Measuring Harmonics

作　　者：华宇[1] 于静[2] 武卫东[1] 

机构地区：[1]河北科技大学信息科学与工程学院,河北石家庄050054 [2]河北科技大学电气信息学院,河北石家庄050054

出　　处：《江苏电器》2005年第6期44-47,共4页

摘　　要：以IIR数字滤波器的基本理论为依据，结合滤波器的传递函数分子、分母系数固定这一事实， 通过选用高度密度可编程逻辑器件确定了 IIR 数字滤波器的硬件实现办案，并按照层次化、模块化、参数化 的设计思路，采用 VHDL 硬件描述语言和原理图两种设计技术进行了 IIR 滤波器的硬件设计；对设计的低 通滤波器进行了系数量化并对其影响进行了分析；最后进行了实际滤波效果测试，验证了设计的正确性。According to the basic theory of IIR filters, a scheme of hardware implementation is worked out by selecting HDPLD and combining with the fact that coefficients of numerator and denominator of transfer function are fixed. From the clew of implementing astratified, modularized and parameterized design , the thesis describes the hardware implementation of the lIR filter with VHDL and schematic diagram design method. The effects of quantification of coefficient of the designed IIR low-pass filters are analyzed. The accomplished design of IIR low-pass filter is tested in experimental circuit. The experiment result indicates that the design is correct.

关 键 词：IIR低通滤波器 高密度可编程逻辑语言 系数量化 

分 类 号：TM935[电气工程—电力电子与电力传动]