Abstract:

In this paper, Hotelling’s T² chart and the DPCA(Dynamic PCA)-based T_A²
and Q charts are applied to real oil data histories obtained from condition monitoring of
heavy hauler truck transmissions. The objective is to evaluate the impending failure
detection capability and the false alarm rate of the control charts in a CBM (conditionbased
maintenance) application. When applied to failure histories, both T² and Q
charts were able to correctly identify the impending failures in more than 50% cases, but
the number of false alarms was considerably higher for the T² chart.
Received on May 24, 2007
References: 08