Selection of Optimistic Wavelet Base in Running-in Vibration Signal Denoising of Remanufacturing Engine

摘要：

　　In the process of running-in vibration signal denoising for remanufacturing engine based on wavelet transform, there are relatively large differences in denoising results when different wavelet bases are used, so the selection of wavelet bases affect the consequent of de-noising processing.On the base of analyzing the characteristics of the commonly used wavelet bases, the paper has compared the impact of the wavelet base on signal denoising.Using SNR(Signal to Noise Ratio) and RMSE(Root Mean Square Error) as criteria, and combined with the characteristics of the running-in vibration signal of the remanufacturing engine, the wavelet base coif4 has been selected as the optimistic base, which has relatively better denoising effect, and improves the SNR and resolution, so it can be used in actual practice.

关键词： Remanufacturing engine running-in Wavelet base Denoising SNR RMSE

作者: Xiangbi An Lei Chen Chengfa Chen Yunchuan Bai Chao Yang

作者单位: Department of Automobile Engineering,Military Transportation University,Tianjin 300161

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 335-339

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）