摘要
提出一种基于小波分析和傅立叶变换仿真新方法,用小波算法判断信号突变点中的可疑故障点,再用傅氏算法计算可疑故障点处计算信号有效值,根据有效值是否超过阈值来确定真正的故障点。
In the article a new method based on wavelet analysis and discrete fourier transform(DFT) is proposed.Wavelet algorithm is first applied to inspect the suspected fault in discontinuous dot of signal.Then the effective value of the signal is calculated according to DFT.The real failure point is finally determined on whether the effective value exceeds the threshold value or not..
出处
《机床电器》
2011年第4期59-60,63,共3页
Machine Tool Electric Apparatus
基金
湖南省教育厅科研资助项目(09C1196)
关键词
可疑故障点
有效值
阈值
suspected failure point
effective value
threshold value
作者简介
刘红平(1972-),男,副教授,硕士,从事自动控制研究。