铁路桥梁横向振动位移信号基于小波分析的数字滤波  

APPLICATION OF WAVELET ANALYSIS IN DIGITAL FILTER TO LATERAL DISPLACEMENT SIGNAL OF RAILWAY BRIDGE

作　　者：刘汉夫[1] 

机构地区：[1]铁道科学研究院铁道建筑研究所,北京100081

出　　处：《钢结构》2007年第4期87-92,共6页Steel Construction

摘　　要：对桥梁横向振动位移信号进行可靠的后处理,提取所需要的信息是桥梁振动试验数据处理的技术关键。必须掌握各种数字滤波方法的原理及其适用条件。通过实例说明小波分析特别适用于非稳态信号的滤波与消噪处理,在桥梁振动信号分析领域具有良好的发展前景。In railway bridge lateral libration testing,the key is how to process the lateral displacement signal so that to pick-up the needed informations.To all kinds of de-noising methods,we must master the theory and the applied condition.In this paper,an example is given to explain that wavelet analysis is very suitable for de-noising processing of non-stationary signal.And it has a wide foreground in the field of processing of libration signal.

关 键 词：非稳态信号 噪声 时频分析 小波变换 

分 类 号：U448.13[建筑科学—桥梁与隧道工程]