CAJ | 학술논문

应用LabVIEW结合Matlab软件设计了液压系统故障信号分析系统，从数据采集、预处理到分别通过时、频域信号处理方法有时域分析、相关性分析、频谱分析、倒频谱分析等；时频联合信号处理方法有短时傅立叶变换（ STFT）、小波变换（WT）、经验模态分解（EMD）、集合经验模态分解（EEMD）等对液压系统正常、冲击、堵塞以及气穴等不同类型信号进行离线研究和分析。运行结果表明：该系统能对信号故障特征进行提取，以便快速准确地查明和判别故障。
응용LabVIEW결합Matlab연건설계료액압계통고장신호분석계통，종수거채집、예처리도분별통과시、빈역신호처리방법유시역분석、상관성분석、빈보분석、도빈보분석등；시빈연합신호처리방법유단시부립협변환（ STFT）、소파변환（WT）、경험모태분해（EMD）、집합경험모태분해（EEMD）등대액압계통정상、충격、도새이급기혈등불동류형신호진행리선연구화분석。운행결과표명：해계통능대신호고장특정진행제취，이편쾌속준학지사명화판별고장。
The combination of LabVIEW and Matlab software was used to design the hydraulic system fault signal analysis sys?tem. From data acquisition, preprocessing to through the time and frequency domain signal processing method: time domain analysis, correlation analysis, spectrum analysis, cepstrum analysis etc.; time and frequency combined signal processing method: short time Fourier Transformation ( STFT) , wavelet decomposition ( WT) , EMD, EEMD, the hydraulic system normal, impact, and cavitation and blocking signals of different types were researched and analyzed offline. The computation result shows that the system can extract signal fault feature, so that quickly and accurately identify and determine fault.