发明申请
US20090063073A1 Method for ascertaining a mains frequency in a voltage signal, and mains analyzer
有权
确定电压信号中电源频率的方法，以及电源分析仪
- 专利标题： Method for ascertaining a mains frequency in a voltage signal, and mains analyzer
- 专利标题（中）： 确定电压信号中电源频率的方法，以及电源分析仪
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申请号： US12222112申请日： 2008-08-01
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公开(公告)号： US20090063073A1公开(公告)日： 2009-03-05
- 发明人: Rainer Hauser
- 申请人： Rainer Hauser
- 优先权： DE102007037060.3 20070803
- 主分类号： G01R23/16
- IPC分类号： G01R23/16
摘要：
To ascertain a mains frequency from a voltage signal which has a particularly high proportion of harmonics, the discrete Fourier transform is used in at least one embodiment to calculate two phases, and the phase interval between these phases is used to infer the mains frequency.