Improved EEMD Method Research
| Periodical | Advanced Materials Research (Volumes 479 - 481) |
|---|---|
| Main Theme | Advanced Mechanical Design |
| Edited by | Wenzhe Chen, Pinqiang Dai, Yonglu Chen, Qianting Wang and Zhengyi Jiang |
| Pages | 1180-1185 |
| DOI | 10.4028/www.scientific.net/AMR.479-481.1180 |
| Citation | Mei Jun Zhang et al., 2012, Advanced Materials Research, 479-481, 1180 |
| Online since | February, 2012 |
| Authors | Mei Jun Zhang, Si Chen Han, Chuang Wang, Shu Guang Li |
| Keywords | EEMD, Endpoint Effect, IMF, Mechanical Fault Diagnosis, Vibration Signal Analysis |
| Price | US$ 28,- |
In order to correct the endpoint effect and modal aliasing phenomenon in EMD and EEMD, improved EEMD is put forward in this paper. on the basis of the cause of the endpoint effect,the improvement measures are proposed. The pulse interference and noise pollution is suppressed by threshold noise reduction.The overshoot and undershoot phenomenon is controlled by improving 3-spline interpolation to fit envelope. The endpoint effects is lessened by signal SVM prolongation.Compared with EMD and EEMD, not only the IMF false component is reduced, the modal aliasing avoided, and effectively the endpoint effect restrained, the distortion problem in the signal decomposition produces corrected in the results of simulation signal and the measured signal by the improved EEMD in this paper.
