BEARING FAULT DIAGNOSIS FOR DIESEL ENGINE GENERATOR USING LABVIEW

A bearing fault diagnosis for a diesel engine generator is provided to allow for ease of diagnosis by comparing the integrated value of FFT frequency spectrum of vibration signal with a normal integrated value. A bearing fault diagnosis system includes accelerating speed sensors(2) attached in X, Y...

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Bibliographische Detailangaben
Hauptverfasser:	SONG, MYUNG HYUN, LEE, SUN HU, PARK, KU NAM, YANG, CHUL OH
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	A bearing fault diagnosis for a diesel engine generator is provided to allow for ease of diagnosis by comparing the integrated value of FFT frequency spectrum of vibration signal with a normal integrated value. A bearing fault diagnosis system includes accelerating speed sensors(2) attached in X, Y and Z-axis directions onto a housing(1) to obtain vibration signals; and a DAQ board(3) for collecting the signals. The collected signals are interpreted by an algorithm programmed by LabVIEW. The vibration signal is filtered by a low pass filter(4), and FFT converted. FFT-converted spectrum data is used in computing a graph area by a function(7) for calculating integrated value. The integrated value is indicated on an integrated value indicator, and compared with a threshold value. If the threshold value is smaller than the measured value, a normality display lamp is turned on. If the threshold value is larger than the measured value, a abnormality display lamp(10) is turned on.