J0450402 Influence of the time variation of the correlation to the accuracy of the SI-F method
Kenta KAWAHARA, Atsushi IWASAKI · The Proceedings of Mechanical Engineering Congress Japan · 2014
This research is about the influence of time variation of the correlation to the diagnostic accuracy via the SI-F method. SI-F method is the statistical damage diagnosis method which diagnoses existence of the damage by detecting the change of correlation between sensor outputs. Since the damage diagnosis is conducted by using parameter which shows change of correlation, this method has high tolerance to the noise and change of environments. The SI-F method is applicable to various structures and machines. In order to perform accurate diagnosis using the SI-F method, we have to consider the influence of the various elements. When diagnosis to the machine via SI-F method. The operating condition of the machine is no constant and change over time. These factors reduce the change of correlation between sensor outputs and cause deterioration of the accuracy of diagnosis. In this study consider the influence of the time variation of the correlation to the accuracy of the SI-F method using measurement data from actual machine.