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基于LabVIEW和支持向量机的电弧传感焊缝偏差识别系统
曾松盛, 王国荣, 石永华, 黄国兴
华南理工大学机械与汽车工程学院, 广州 510640
摘要:
在虚拟仪器开发软件LabVIEW环境下,构建了一种新的基于旋转电弧传感的自动焊缝偏差识别系统.描述了基于LabVIEW的数据采集,小波滤波,数据归一化处理,纵向均值滤波,横向数据维数约简等预处理方法.简述了支持向量回归机的基本原理,数据依赖型核函数的构建,以及支持向量回归机在MATLAB中的算法实现.最后采用LabVIEW和MATLAB相结合的方法,给出了偏差识别系统整个软件的设计方法及控制流程并进行了试验研究.结果表明,方法是可行的,识别精度能满足工程应用的需要。
关键词:  虚拟仪器LabVIEW  支持向量回归机  MATLAB软件  偏差识别
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基金项目:国家自然科学基金资助项目(50705030)
Arc sensor seam offset identification system based on LabVIEW and support vector regression machine
ZENG Songsheng, WANG Guorong, SHI Yonghua, HUANG Guoxing
South China University of Technology, School of Mechanics and Automotive Engineering, Guangzhou 510640, China
Abstract:
The new welding seam offset identification sy stem of arc sensor was developed with the virtual instrument LabVIEW in this paper.The data detection, wavelet filtering, data normalizing, vertical mean filtering and horizontal dimensionality reduction were depicted based on LabVIEW.The basic principle of the support vector regression machine and data-dependent kernel function was introduced. The algorithm realization of the support vector regression machine withMatlab was proposed.The design method and the control flowchart of the seam offset identification software were proposed using LabVIEW and Matlab.The experiment results confirmed that the way was feasible, the identification precision could meet the actual application in the seam tracking system.
Key words:  LabVIEW  support vector regression machine  Matlab  offset identification