文献类型：期刊文献

中文题名：基于Chebyshev多项式最佳一致逼近的偏正交分解特征提取方法及应用

英文题名：Investigation and Application of Feature Extraction Based on the Best Uniform Approximation of Chebyshev′s Polynomial with Nonlinear Partial Orthogonal Analysis

作者：柳桂国[1];楼望建[2];黄道[1]

机构：[1]工业自动化国家工程中心华东理工大学分部;[2]宁波科技园区中策仪器厂,浙江宁波315040

年份：2008

卷号：34

期号：4

起止页码：574

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：20083911603600);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：逼近函数;Chebyshev多项式;偏正交分解;特征提取;滚动轴承

外文关键词：approximation function; Chebyshev＇s polynomial; partial orthogonal function; feature extraction; rolling bearing

摘要：利用Chebyshev插值法,建立非平稳信号的最佳一致逼近函数,通过对该函数进行偏正交分解获取对应的特征值及特征向量,该方法运用在滚动轴承故障特征提取应用中,取得了良好的效果。
For nonlinear and nonstationary signal, the paper builds the best uniform approximation function with Chebyshev＇s interposing method, then the function is analyzed by orthogonal function to obtain relating eigenvalue and eigen vector. The vector reflects a pattern of the vibration signal steadily, The experiment for vibration signals of normal and different kinds of faults rolling bearings shows that the patterns of signals are extracted with the method steadily and effectively.