中国电机工程学报2001，Vol.21Issue(1)：25-29,5.
基于小波包算法的电机故障信号的压缩和重构
COMPRESSION AND RECONSTRUCTION FOR FAULTS SIGNALS OF ELECTRIC MACHINES BASED ON WAVELET PACKETS
摘要
Abstract
A new method for compression and reconstruction of faults signals of electric machines based on the improved fast algorithms of wavelet packets (WP) are presented in this paper.The error limitation is selected , the best compression rate can be obtained by selecting decomposition orders and adjusting the threshold of every node. The compression indices changed with decomposition orders are analyzed under the different methods that the coefficients of scale space (v1) can be compressed and not compressed , and the whole decomposition and optimal decomposition based on “entropy”.The evident results show that the computing loads of the WP can be reduced greatly , and the effective compression and reconstruction without distortion can be obtained using the method proposed in this paper.关键词
小波包/压缩和重构/电机故障信号Key words
wavelet packets/compression and reconstr-uction/faults signals of the electric machine分类
信息技术与安全科学引用本文复制引用
任震,黄雯莹,吴国沛,何建军..基于小波包算法的电机故障信号的压缩和重构[J].中国电机工程学报,2001,21(1):25-29,5.基金项目
国家自然科学基金项目(500777008)；广东省自然科学基金项目(980608)。 （500777008）
