PURIFICATION OF AXIS TRACE BASED ON HARMONIC WINDOW METHOD

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (8) : 74-77.

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PURIFICATION OF AXIS TRACE BASED ON HARMONIC WINDOW METHOD

Zhang Wenbin，Zhou Xiaojun，Yang Xianyong，Lin Yong

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Abstract

Axis trace is an important content for vibration signal analysis in time domain of rotating machinery; different axis trace expresses different operating condition or basic fault information for rotor. On the base of deep research box-like spectrum feature of harmonic wavelet, a new method that need not decomposition to purify the axis trace was proposed by using the harmonic window method. With this method, the signal could be decomposed into any frequency band, and then the interested frequency band could be abstracted and reconstructed in time domain, so the purification of axis trace was completed. The effectiveness of this method has been proved by the successful purification of axis trace coming from the test-bed. This method has simple algorithm and easy on-site application; it provides a new method for signal analysis of rotor fault.

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axis trace / harmonic window / purification / rotating machinery / fault diagnosis

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Zhang Wenbin;Zhou Xiaojun;Yang Xianyong;Lin Yong. PURIFICATION OF AXIS TRACE BASED ON HARMONIC WINDOW METHOD[J]. Journal of Vibration and Shock, 2009, 28(8): 74-77