| 自适应IIR低通数字滤波器在频率测量中的应用 |
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| 引用本文： | 方伟林,李宁,方旭. 自适应IIR低通数字滤波器在频率测量中的应用[J]. 电测与仪表, 2009, 46(12) |
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| 作者姓名： | 方伟林 李宁 方旭 |
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| 作者单位： | 黑龙江大学信网中心,哈尔滨,150080;哈尔滨工程大学信通学院,哈尔滨,150001 |
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| 基金项目： | 黑龙江省科技攻关项目，哈尔滨市科技计划项目 |
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| 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.
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| 关 键 词： | 自适应 IIR数字滤波器 频率测量 |
The Application of Adaptive IIR Low Pass Digital Filters in Frequency Measurement |
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| FANG Wei-lin,LI Ning,FANG Xu. The Application of Adaptive IIR Low Pass Digital Filters in Frequency Measurement[J]. Electrical Measurement & Instrumentation, 2009, 46(12) |
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| Authors: | FANG Wei-lin LI Ning FANG Xu |
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| Affiliation: | FANG Wei-lin1,LI Ning1,FANG Xu2 (1.HeilongjiangUniversity,Harbin 150080,China.2.Harbin EngineeringUniversity,Harbin 150001,China) |
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| Abstract: | 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. |
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| Keywords: | adaptation IIR digital filters frequency measurement |
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