旋转机械源混合模式分析及源波形恢复  

Analysis of mixing model of rotating machine sources and its source waveform restoration

作　　者：焦卫东[1] 常永萍[2] 

机构地区：[1]嘉兴学院机电与建筑工程学院,浙江嘉兴314001 [2]嘉兴学院外国语学院,浙江嘉兴314001

出　　处：《兰州理工大学学报》2005年第1期39-42,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(50205025);浙江省自然科学基金(5001004)

摘　　要：讨论了旋转机械源(振动激励源与噪声源)混合模式及源波形恢复的问题.从分析旋转机械源的起源及传播过程出发,整体论述了其混合模式,给出了相应的数学模型,并从源分离和波形恢复的角度对这些模型的实用背景进行了综合概括.最后,提出了基于频域分段窄带化的机械源分离整体解决方案.Such problem as mixing model of rotating machine sources (including vibratory and acoustical source) and their waveform restoration is discussed.Aiming at origin and propagation of mechanical sources,mixing model of mechanical sources is expounded generally.and its corresponding mathematic model is given. Moreover,a summary to the application of this model in resource separation and waveform restoration is made. Finally,a complete solution of separation of mechanical sources with narrowing-band in frequency domain is proposed.

关 键 词：源分离 瞬时混叠 卷积混叠 冗余与分集 

分 类 号：TH113.1[机械工程—机械设计及理论] TN912.3[电子电信—通信与信息系统]