摘要
介绍了用于电网谐波检测的数字低通滤波器的设计原则,以IIR数字滤波器的基本理论为基础,采用直接Ⅱ型结构,设计了一种高精度、高实时性的Butterworth数字低通滤波器,并分析了滤波性能,验证了滤波器的可行性。
Some principles of designing the digital low pass filter for harmonic detection are introduced, according to the basic theory of IIR filters and using direct form Ⅱ, a Butterworth digital low pass filter which is high precision and the high real-time is designed. The performance of the filter is analyzed, and the feasibility of the filter is proved.
出处
《煤矿机械》
北大核心
2009年第9期165-167,共3页
Coal Mine Machinery
