小波变换的无缝钢轨垂向应变信号分离  

Separation of vertical strain signal of seamless railway based on wavelet transform

作　　者：李亮[1] 刘冲[2] 韦佳宏[1] 张志新[3] LI Liang LIU Chong WEI Jia-hong ZHANG Zhi-xin(Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology,Dalian 116024,China School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China School of Mechanical Engineering, Dalian University ,Dalian 116622, China)

机构地区：[1]大连理工大学辽宁省微纳米技术及系统重点实验室,辽宁大连116024 [2]大连理工大学机械工程学院,辽宁大连116024 [3]大连大学机械工程学院,辽宁大连116622

出　　处：《传感器与微系统》2017年第3期17-20,共4页Transducer and Microsystem Technologies

基　　金：国家"十二五"科技支撑计划项目(2011BAG05B02-03;2011BAG05B02-02)

摘　　要：分析钢轨垂向应变信号基线漂移产生的原因,并采用小波变换对垂向应变信号进行分解与重构,分离信号中由温度引起的应变与轮轨力产生的应变。在Matlab环境下对分布式钢轨应力检测技术与无线传感网系统数据库中垂向应变信号进行处理,结果表明,该方法可以有效地分离信号中的不同成分。Reason causes baseline drift of the vertical strain signal are analyzed,wavelet transform is used to decompose and reconstruct signal of the vertical strain,separate the strain caused by wheel-rail force and temperature. In the Matlab environment,vertical strain signal from the distributed rail stress monitoring technology and database of wireless sensor networks system are processed. The results show that the method can separate different components in signals effectively.

关 键 词：无缝钢轨 应力监测 小波变换 信号分离 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] U285[自动化与计算机技术—计算机科学与技术]