信息与电子工程2011，Vol.9Issue(2)：195-201,7.
基于模态准小波的密频模态参数识别
Parameter identification for concentrated modal based on modal quasi-wavelet
摘要
Abstract
Modal parameters identification algorithm based on continuous wavelet transformation of the Morlet wavelet is an important algorithm in fault diagnosis and multi-modal parameters identification area.However. on the time-scale image of wavelet continuous transformation of the Morlet wavelet, there will appear aliasing phenomenon between two modals while vibration modals are concentrated, and it is hard to separate these concentrated modals. A new wavelet function called modal quasi-wavelet is proposed in this paper. The continuous transformation of modal quasi-wavelet can split two concentrated modals effectively.And the new algorithm of modal parameters identification is put forward. Numerous experiments of the new algorithm indicate that the modal quasi-wavelet shows better performance than Morlet wavelet. The proposed method provides a new approach for concentrated modal parameters identification.关键词
模态准小波/模态参数识别/密频模态Key words
modal quasi-wavelet/ modal parameter identification/ concentrated modals分类
电子信息工程引用本文复制引用
叶庆卫,赵挺凯,周宇,王晓东..基于模态准小波的密频模态参数识别[J].信息与电子工程,2011,9(2):195-201,7.基金项目
浙江省教育厅基金资助项目(Y200908502) （Y200908502）
国家自然科学基金资助项目(61071198) （61071198）
