【摘要】 EMD是一种适用于非线性、非平稳信号的自适应分析方法,故障信号经EMD分解后,提取对故障敏感的分量作自回归谱分析,可以得到高信噪比的特征量。试验分析表明,该方法对压缩机气阀故障诊断是有效的。更多还原

【Abstract】 As a signal analysis method,both empirical mode decomposition and autoregresslve spectrum are introduced.EMD method can decompose the signal into some intrinsic mode function.Use a intrinsic mode function corresponding to fault,autoregresslve spectrum method can make a good character parameter having high SNR.Experiment shows that this method is efficient in fault diagnosis of reciprocating compressor valves.更多还原