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Fault detection and isolation of a two non-interacting tanks system using partial PCA

In this paper, the concept of principal component analysis (PCA) has been used to generate a residual space to detect an actuator and a sensor fault in a two non-interacting tank system. Since there is only one residual vector in the present case, isolation of faults using PCA is not feasible. For isolation of the fault, partial PCA based structured residual approach has been used. The results show clear isolation of the faults.