A Fault Detection and Isolation Methodology Theory and Application

The paper presents the theoretical development and practical applications of a fault detection and isolation (PDI) methodology which exploits all available sources of redundant information. By concurrent checking of relative consistencies among all redundant measurements, the most consistent and inconsistent subsets are identified for measurement estimation and fault isolation, respectively. The FDI algorithm is particularly suitable for real-time applications using commercially available microcomputers and has been tested on-line in operating nuclear reactors.