Subspace Method Aided Data-Driven Fault Detection Based on Principal Component Analysis

Algorithm 1

SMI-PCA fault detection.

Generate and with fault-free data

Perform PCA on

Calculate and according to (22)

Construct residual according to (12)

Calculate in the fault-free case

Generate and with on-line operating data

Construct residual according to (12), then calculate

   the testing statistic by (13)

Determine the threshold

Evaluate the residual according to the detection logic