CAJ | 학술논문

经验模态分解非常适合于非平稳、非线性信号的分析,Labview和Matlab在工程中使用较广,三者的有机结合在工程中具有广阔的应用前景。为此,将Labview和Matlab优势互补,采用Matlab Script节点技术混合编程在虚拟仪器中实现EMD( empirical mode decomposition)包络谱分析。实例应用结果表明Labview开发的系统主界面具有良好的人机交互和强大的图形显示界面,Labview中调用Matlab提供的EMD包络谱程序能准确、快速识别正常和故障轴承特征频率,针对不同信号选择不同分解层数时程序修改简单方便。
경험모태분해비상괄합우비평은、비선성신호적분석,Labview화Matlab재공정중사용교엄,삼자적유궤결합재공정중구유엄활적응용전경。위차,장Labview화Matlab우세호보,채용Matlab Script절점기술혼합편정재허의의기중실현EMD( empirical mode decomposition)포락보분석。실례응용결과표명Labview개발적계통주계면구유량호적인궤교호화강대적도형현시계면,Labview중조용Matlab제공적EMD포락보정서능준학、쾌속식별정상화고장축승특정빈솔,침대불동신호선택불동분해층수시정서수개간단방편。
Empirical mode decomposition is very suitable for analysing non-stationary and nonlinear signal. Labview and Matlab are widely used in engineering. If three ones above are integrated organical y,it is of three have a broad application prospects in engi-neering. For this reason, Labview and Matlab advantages are complemented. This paper uses Matlab script node technology to im-plement EMD( Empirical Mode Decomposition) envelope spectrum analysis in virtual instrument by hybrid programming. Application result shows the system main interface developed by Labview has a good human-computer interaction and powerful graphical display interface, The characteristic frequencies of normal bearing or fault bearing are accurately and quickly recognized on the envelope spectrum display in Labview provided by Matlab. The program is convenient to modify the chosen different decomposition layers.