数字PCB传导干扰信号的虚拟仪器测量
Microcomputer Information(2008)
Abstract
基于短时分形维数的模糊控制滤波方法,对数字印制电路板(PCB)电磁干扰(EMI)信号中的噪声进行滤波。该方法提出了网络分形维数和短时分形维数的新算法,并讨论了模糊控制滤波方法中的模糊控制参数的选取算法。基于虚拟仪器(VI)LabVIEW6.i平台上对数字印制电路板传导干扰信号进行实时检测。经过信号处理,该系统还具有信噪分离、测量传导干扰信号的功率谱等功能。结果表明,该方法滤波效果良好。
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Key words
Conduction interference,Real-time detection,Fuzzy control,Short time divided form numbers,Noise cancellation
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