| 基于FPGA的自适应滤波器去除检测信号中50Hz工频干扰 |
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| 引用本文： | 孙国良,刘晓平,应怀樵.基于FPGA的自适应滤波器去除检测信号中50Hz工频干扰[J].测控技术,2008,27(12). |
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| 作者姓名： | 孙国良 刘晓平 应怀樵 |
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| 作者单位： | 1. 北京邮电大学,自动化学院,北京,100876
2. 北京东方振动和噪声技术研究所,北京,100085 |
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| 摘 要： | 为去除检测信号中的50 Hz工频干扰,采用FPGA实现了基于LMS算法的自适应滤波器.采用VHDL编写代码实现LMS(最小均方误差)算法,并用MaxplusⅡ进行编译、综合,FPGA器件选用ALTERA公司的cyclone系列的EP1C12芯片.将滤波器应用于数据采集卡,结果显示,所设计的自适应滤波器可有效去除检测信号中的50 Hz工频干扰信号.
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| 关 键 词： | 自适应滤波器 50Hz工频干扰 |
Adaptive Filter Based on FPGA for Eliminating the Interferencine of 50Hz in Detection Signal |
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| SUN Guo-liang,LIU Xiao-ping,YING Huai-qiao.Adaptive Filter Based on FPGA for Eliminating the Interferencine of 50Hz in Detection Signal[J].Measurement & Control Technology,2008,27(12). |
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| Authors: | SUN Guo-liang LIU Xiao-ping YING Huai-qiao |
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| Affiliation: | SUN Guo-liang LIU Xiao-ping School of Automation,Beijing University of Posts , Telecommunications,Beijing 100876,China YING Huai-qiao BeiJing Orient Institute of Noise , Vibration,Beijing 100085,China |
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| Abstract: | For eliminating the interference of 50 Hz in detection signal,a way to realize the adaptive filter which based on the LMS (least mean square)algorithm using the FPGA is introduced.The adaptive filter is coded with VHDL,compiled and synthesized with ALTERA MaxplusII.A EP1C12 is selected for synthesizing.When using the filter on the data acquisition card,it efficiently elimi- nates the interference of 50 Hz in detection signal. |
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| Keywords: | FPGA LMS |
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