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논문 기본 정보

자료유형
학술대회자료
저자정보
Chai Na (Harbin Institute of Technology) Yang Ming (Harbin Institute of Technology) Ren Boyang (Harbin Institute of Technology) Xu Dianguo (Harbin Institute of Technology)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2019-ECCE Asia
발행연도
2019.5
수록면
3,315 - 3,320 (6page)

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초록· 키워드

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Local bearing faults will lead to impulses in motor speed which is already available in the vector controlled AC motor drives. Due to the limited sampling frequency of control system, the extraction of fault feature is difficult. Therefore, a signal processing scheme which combines spectral kurtosis (SK) with the adaptive signal reconstruction based on ensemble empirical mode decomposition (EEMD) is proposed. Firstly, motor speed is decomposed by EEMD into a finite number of intrinsic mode functions (IMFs) which reflect the local characteristics of original signal. Then, the correlation coefficient is employed to eliminate the irrelevant components, and reconstruct the speed signal with a higher signal-to-noise ratio adaptively. Finally, the reconstructed speed is analyzed with SK to extract fault features. The proposed scheme is verified on the motor bearing outer ring fault detection platform, and its effectiveness over the conventional SK is also shown.

목차

Abstract
I. INTRODUCTION
II. PRINCIPLE OF FAULT DETECTION
III. FAULT DETECTION METHOD
IV. EXPERIMENT RESULTS
V. CONCLUSIONS
REFERENCES

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