DESIGN AND ANALYSIS OF MORPHOLOGICAL FILTER FOR VIBRATION SIGNALS OF ROTATING MACHINERY

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (9) : 79-81.

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DESIGN AND ANALYSIS OF MORPHOLOGICAL FILTER FOR VIBRATION SIGNALS OF ROTATING MACHINERY

DU Bi-qiang1, TANG Gui-ji1, Shi Jun-jie2

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Abstract

Sampling real vibration signal with interferences was processed by morphological filtering, and the effect of noise reduction and primal feature reservation of morphological filtering is validated. The influences of the shape, width and amplitude of the structure element on the performance of morphological filters, and the influences of the vibration signals sampling rate on the size of structure element have been analyzed. Based on the analysis results, the general rule for shape, size of structure element on the design of morphological filter is elicited, which can be applied for de-noising and filtering of rotating machinery vibration signals.

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Rotating machinery / vibration signal / morphological filter / structure element / sampling rate

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DU Bi-qiang;TANG Gui-ji;Shi Jun-jie. DESIGN AND ANALYSIS OF MORPHOLOGICAL FILTER FOR VIBRATION SIGNALS OF ROTATING MACHINERY[J]. Journal of Vibration and Shock, 2009, 28(9): 79-81