论文信息 - Fault Diagnosis Method of Gearbox Based on Local Mean Decomposition

Fault Diagnosis Method of Gearbox Based on Local Mean Decomposition

Local mean decomposition(LMD),which is a new time-frequency method, can decompose a complex multicomponent modulation signal into a linear combination of a finite set of mono-component modulation signals. LMD integrates two signal processing procedures: decomposition and demodulation, and it can extract modulation feature efficiently. The basic theory and algorithm of LMD is introduced, and the effection of LMD is verified trough simulation. LMD is applied in gearbox fault diagnosis and successfully extracts modulation feature.

Jian Zhang | Yan Feng Tang | Qin Qin Wang | Hui Mei Li

[1] Gaigai Cai,et al. A demodulating approach based on local mean decomposition and its applications in mechanical fault diagnosis , 2011 .

[2] YU De-jie. Comparison between the methods of local mean decomposition and empirical mode decomposition , 2009 .

[3] Ronald S. Harichandran,et al. Statistics of the von Mises stress response for structures subjected to random excitations , 1998 .

[4] Joshua R. Smith,et al. The local mean decomposition and its application to EEG perception data , 2005, Journal of The Royal Society Interface.

[5] Y. Zi,et al. A demodulation method based on improved local mean decomposition and its application in rub-impact fault diagnosis , 2009 .