Title :
Application of Hilbert-Huang transform and Mahalanobis-Taguchi System in mechanical fault diagnostics using vibration signals
Author :
Jiangtao, Ren ; Yuanwen, Cai ; Xiaochen, Xing
Author_Institution :
Co. of Postgrad. Manage., Acad. of Equip. Command & Technol., Beijing, China
Abstract :
As for non-destructive condition monitoring method, vibration signals are measured and analyzed to diagnose mechanical faults. A method of mechanical fault levels identification is proposed in this paper using vibration signals. Firstly, Hilbert-Huang transform is used to analyze the signal. Fault information is obtained. And energy ratio of intrinsic mode functions is taken as fault characteristics. Secondly, different levels of fault are identified by applying Mahalanobis-Taguchi System. Standard Mahalanobis space is constructed. And slight and severe fault are diagnosed based on its Mahalanobis Distance to standard space. The method is validated by real rotating machinery seeded-fault-test vibration signals, results showed that this method performed well.
Keywords :
Hilbert transforms; Taguchi methods; condition monitoring; fault diagnosis; machinery; pattern classification; pattern clustering; vibrations; Hilbert-Huang transform; Mahalanobis-Taguchi system; energy ratio; fault level identification; intrinsic mode function; machinery seeded-fault-test vibration signals; mechanical fault diagnostics; nondestructive condition monitoring method; standard Mahalanobis space; Circuit faults; Correlation; Fault diagnosis; Instruments; Transforms; Vibration measurement; Vibrations; Energy Ratio; Fault Level Identification; Hilbert-Huang transform; Intrinsic Mode Function; Mahalanobis-Taguchi System; Vibration Signals;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8158-3
DOI :
10.1109/ICEMI.2011.6038001
