摘要
因为具有良好的滤波性能,巴特沃兹滤波器在信号处理中得到了广泛的应用。本文讨论了巴特沃兹滤波器与正交小波的内在联系,给出了利用巴特沃兹滤波系数求电压、电流、有功功率、无功功率有效值的方法。理论和数据表明基于巴特沃兹滤波器测量有效值具有很高的精度。
The Butterworth filters are widely used in signal process owe to its better amplitude-frequence performance. This paper discusses the relationships between orthonormal wavelet and butterworth filter, together with simulation, a proposed power measurement method based on butterworth filter is presented. Theory and simulation have proved that power measurement based on butterworth filters has higher accuracy.
出处
《电测与仪表》
北大核心
2005年第10期8-10,共3页
Electrical Measurement & Instrumentation
基金
安徽省教育厅自然科学研究资助项目(2005KJ097)
关键词
正交小波
有效值
巴特沃兹
滤波器
orthonormal wavelet
effective value
Butterworth
filter
