At present, in the feature extraction of non-stationary vibration signals, many time-frequency analytic methods have emerged to meet the further need of non-stationary signal analysis such as Wavelet Transform (WT), Short Time Fourier Transform (STFT), Wigner-Ville Distribution (WVD), Empirical Mode Decomposition (EMD), Ensemble Empirical Mode Decomposition (EEMD) and so on. However, these time-frequency analysis methods can only be carried out on Matlab platform and the processes are of low efficiency, bringing a lot of inconvenience in signal analysis because they can not run on Windows system independently. According to the defects, a novel method of mixed programming which combines Matlab with Delphi based on COM (component Object Model) module technology is proposed to design a time-frequency analysis system for non-stationary vibration signals assembling fourteen methods. The advantages of two languages are shared with each other. In design of the system, a combined method which combines two or three analytic methods is put forward for relational analytic modules to make the analytic results more perfect and clearer, like WAVELET-FFT, EMD-WVD etc.. This paper uses the EMD-WVD combined method as an example to present the programming thoughts and processes. The effectiveness of the system is validated using a simulation signal and an experimental signal. The system can be executed separated from MATLAB environment.
목차
Abstract 1. Introduction 2. Mixed Programming Technology using Matlab and Delphi 2.1. COM Technology 2.2 Building COM Modules in Matlab 2.3. COM Modules Called by Delphi 3. Programming Implementation of the Time-frequency Analysis System 3.1. Flow Chart of Programming 3.2. Design of the System Interface 3.3. Programming of EMD-WVD Combined Method 4. System Validation using a Simulation Signal 5. Experimental Validation 6. Conclusions References
Miaozhong Sun [ College of Mechanical Engineering, Tianjin University of Science & Technology No.1038 Dagu South Road, Hexi District, Tianjin City, Tianjin 300222, PR China ]
Shihai Cui [ College of Mechanical Engineering, Tianjin University of Science & Technology No.1038 Dagu South Road, Hexi District, Tianjin City, Tianjin 300222, PR China ]
Yuanli Xu [ College of Mechanical Engineering, Tianjin University of Science & Technology No.1038 Dagu South Road, Hexi District, Tianjin City, Tianjin 300222, PR China ]
보안공학연구지원센터(IJHIT) [Science & Engineering Research Support Center, Republic of Korea(IJHIT)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Hybrid Information Technology
간기
격월간
pISSN
1738-9968
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Hybrid Information Technology Vol.7 No.6