Firstly, separate the series data are seperated into intrinsic mode functions(IMFs) using empirical mode decomposition(EMD),Then,the Winger distribution transformation is applied to every IMFs.

• 通过把振动信号序列进行EMD分解 ,然后对每个分解后的IMF进行Winger分布分析 ,可取得抑制频率干扰的效果 ,使时频谱图更清晰。