摘要
采用自适应IIR低通数字滤波器应用于变频电源的频率测量,该滤波器可根据电网频率和采样周期自动地调节通阻带来实现有效滤波,滤波后的信号通过周期法测频可抗高强度干扰,使频率的测量更准确。
The adaptive IIR low pass digital filter is used in frequency measurement of variable frequency power. The filters can automatically adjust pass-band and stop-band according to the frequency of power grid and sampling period, thus realizing the effective filtering. The frequency measurement of filtered signal, by the way of period-measuring, is of highly anti-interference, thus making the frequency measurement more accurate.
出处
《电测与仪表》
北大核心
2009年第12期14-16,共3页
Electrical Measurement & Instrumentation
基金
黑龙江省科技计划项目GG06A126
哈尔滨市科技计划项目2007AA1CG018
关键词
自适应
IIR数字滤波器
频率测量
adaptation, IIR digital filters, frequency measurement
