Comparison of Different Fault Detection Statistics Detectability in PCA

Detectability of the sensor fault detection system is the basic criteria for selecting of different fault detection statistics. and in MPCA are compared with . The complementary among them is analyzed qualitatively. Results of power plant data simulation show that and in MPCA can improve sensor fault detection, but is still better for some sensors. Combination of , and can improve sensor fault detectability of PCA-based fault detection system. Keywords-process monitoring, fault detection, Principal component analysis