小波阈值去噪技术及其在LabVIEW上的实现  

Wavelet Threshold Denosing Technology and It's Implementation on LabVIEW

作　　者：张琛[1] 原思聪[1] 王蓉[1] 李超[1] 

机构地区：[1]西安建筑科技大学机电工程学院,陕西西安710055

出　　处：《自动化仪表》2013年第11期17-20,共4页Process Automation Instrumentation

摘　　要：针对数据采集和传输过程存在噪声、不利于日后信号分析这一问题,采用小波阈值法进行去噪。同时运用虚拟仪器的设计思想,利用LabVIEW集成开发环境和Matlab软件进行仿真试验,对傅里叶消噪法和不同的阈值消噪法进行了分析比较。结果表明,小波阈值消噪法优于传统方法,具有广阔的应用前景。In processes of data acquisition and data transmission,noises are introduced; this is not conducive to the analysis in future,so by using wavelet threshold method for denoising.In addition,by adopting the design concept of virtual instrument and LabVIEW integrated developing environment as well as Matlab software,through simulation test,the Fourier denoising and other different threshold denoising methods are analyzed and compared.The results indicate that the wavelet threshold denoising method is better than traditional methods,and can be used in vibration monitoring,thus it possesses excellent application prospects.

关 键 词：小波变换 阈值法 消噪 LABVIEW Matlab 

分 类 号：TN911.4[电子电信—通信与信息系统]