Decomposition and reconstruction for Non-stationary vibration signal of small engine

摘要：

According to vibration signal of a small engine is non-stationary It extract the intrinsic mode function(IMF) of the signal through empirical mode decomposition(EMD).In order to overcome the mode mixing that happens in EMD, an improved EMD-ensemble empirical mode decomposition EEMD has been introduced. This dissertation analyses the reason of mixing and some solution at present, detailed introduces the basic principle, characteristics and related algorithm of EMD and EEMD. EEMD de-noising method was applied to analyze the vibration signals. With the simulation results of vibration signal, it points out that EEMD can solve the mode mixing, and at the same time reserve the adaptability of the EMD, it has no limits to the types of signals.

关键词： empirical mode decomposition (EMD) ensemble empirical mode decomposition (EEMD) vibration signals

作者: Huiyan HAO

作者单位: Key Laboratory of Instrumentation Science &Dynamic Measurement Ministry of Education National Key Laboratory of Science and Technology on Electronic Test and Measurement North University of China Taiyuan ,China

会议类型: 国际会议

会议名称: The 2010 International Conference on Computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)

会议地点: 太原

会议语种:英文

页码: 542-545

在线出版日期: 2010-10-22（万方平台首次上网日期，不代表论文的发表时间）