基于LabVIEW的多通道高铁桥梁振动测试系统的搭建

摘要

A multi-channel system including signal acquisition,file management,time-domain analysis,frequency-domain analysis and spectral analysis was developed for researching the vibration rule and the amplification effect of the bridge along highspeed railway based on LabVIEW2010. The functions and the development process of software and hardware of the system were described, and improved-Bartlett method was introduced to power spectrum programming. The results of test show that the proposed system can achieve different design functions with high accuracy.%为研究高速铁路沿线桥梁在高速列车激励下的振动规律,以及桥梁系统对地震响应的放大效应,基于LabVIEW2010开发了一套集信号采集、文件管理、信号时域分析、频域分析和模态分析为一体的高速铁路桥梁振动测试系统介绍了系统软、硬件的各种功能和开发过程,特别是在功率谱编程中引入了Bartlett改进方法.经实验验证,该系统具有较高的精度,并能很好地实现各设计功能.