摘要
介绍了时频变换和小波变换 ,利用三级小波包分解 ,获取信号能量分布的特征向量 ,根据信号能量分布的特征向量相关系数 ,确定两种信号相关程度 ,给出了识别不同信号的识别方法。试验表明 :本方法在车辆噪声、振动源识别应用方面比传统的分析方法更为简单、有效 。
Using solution of three grades of the wave packets, a eigenvector of the signal energy distribution being got, and using the correlation coefficient of the sign energy disposition, the two sign correlativity being determined, this paper give a method of the identifying different signs. Experimental research shows that this method is more simple and effective than traditional method in the field of identifying noise and vibration of automobile, and a new surveying way to study the controlling of noise and vibration of automobile is given.
出处
《华东船舶工业学院学报》
2002年第4期48-52,共5页
Journal of East China Shipbuilding Institute(Natural Science Edition)
